dep ensure logrus; update README:

Gopkg.lock

@@ -3,23 +3,30 @@
 
 [[projects]]
   branch = "master"
+  digest = "1:a313376bcbcce8ae8bddb8089a7293e0473a0f8e9e3710d6244e09e81875ccf0"
   name = "github.com/aristanetworks/goarista"
   packages = ["monotime"]
+  pruneopts = ""
   revision = "ff33da284e760fcdb03c33d37a719e5ed30ba844"
 
 [[projects]]
   branch = "master"
+  digest = "1:c6bf1ac7bbc0fe51637bf54d5a88ff79b171b3b42dbc665dec98303c862d8662"
   name = "github.com/btcsuite/btcd"
   packages = ["btcec"]
+  pruneopts = ""
   revision = "cff30e1d23fc9e800b2b5b4b41ef1817dda07e9f"
 
 [[projects]]
+  digest = "1:aaeffbff5bd24654cb4c190ed75d6c7b57b4f5d6741914c1a7a6bb7447e756c5"
   name = "github.com/deckarep/golang-set"
   packages = ["."]
+  pruneopts = ""
   revision = "cbaa98ba5575e67703b32b4b19f73c91f3c4159e"
   version = "v1.7.1"
 
 [[projects]]
+  digest = "1:c205f1963071408c1fac73c1b37c86ef9b98d80f17e690a2239853cde255ad3d"
   name = "github.com/ethereum/go-ethereum"
   packages = [
     ".",
@@ -54,42 +61,54 @@
     "params",
     "rlp",
     "rpc",
-    "trie"
+    "trie",
   ]
+  pruneopts = ""
   revision = "58632d44021bf095b43a1bb2443e6e3690a94739"
   version = "v1.8.18"
 
 [[projects]]
+  digest = "1:eb53021a8aa3f599d29c7102e65026242bdedce998a54837dc67f14b6a97c5fd"
   name = "github.com/fsnotify/fsnotify"
   packages = ["."]
+  pruneopts = ""
   revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
   version = "v1.4.7"
 
 [[projects]]
+  digest = "1:a01080d20c45c031c13f3828c56e58f4f51d926a482ad10cc0316225097eb7ea"
   name = "github.com/go-stack/stack"
   packages = ["."]
+  pruneopts = ""
   revision = "2fee6af1a9795aafbe0253a0cfbdf668e1fb8a9a"
   version = "v1.8.0"
 
 [[projects]]
+  digest = "1:3dd078fda7500c341bc26cfbc6c6a34614f295a2457149fc1045cab767cbcf18"
   name = "github.com/golang/protobuf"
   packages = ["proto"]
+  pruneopts = ""
   revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
   version = "v1.2.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:2a5888946cdbc8aa360fd43301f9fc7869d663f60d5eedae7d4e6e5e4f06f2bf"
   name = "github.com/golang/snappy"
   packages = ["."]
+  pruneopts = ""
   revision = "2e65f85255dbc3072edf28d6b5b8efc472979f5a"
 
 [[projects]]
+  digest = "1:5247b135b5492aa232a731acdcb52b08f32b874cb398f21ab460396eadbe866b"
   name = "github.com/google/uuid"
   packages = ["."]
+  pruneopts = ""
   revision = "d460ce9f8df2e77fb1ba55ca87fafed96c607494"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:d14365c51dd1d34d5c79833ec91413bfbb166be978724f15701e17080dc06dec"
   name = "github.com/hashicorp/hcl"
   packages = [
     ".",
@@ -101,25 +120,29 @@
     "hcl/token",
     "json/parser",
     "json/scanner",
-    "json/token"
+    "json/token",
   ]
+  pruneopts = ""
   revision = "8cb6e5b959231cc1119e43259c4a608f9c51a241"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:b3c5b95e56c06f5aa72cb2500e6ee5f44fcd122872d4fec2023a488e561218bc"
   name = "github.com/hpcloud/tail"
   packages = [
     ".",
     "ratelimiter",
     "util",
     "watch",
-    "winfile"
+    "winfile",
   ]
+  pruneopts = ""
   revision = "a30252cb686a21eb2d0b98132633053ec2f7f1e5"
   version = "v1.0.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:b6e4cc26365c004808649862e22069de09594a9222143399a7a04904e9f7018c"
   name = "github.com/huin/goupnp"
   packages = [
     ".",
@@ -128,59 +151,83 @@
     "httpu",
     "scpd",
     "soap",
-    "ssdp"
+    "ssdp",
   ]
+  pruneopts = ""
   revision = "1395d1447324cbea88d249fbfcfd70ea878fdfca"
 
 [[projects]]
+  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
   name = "github.com/inconshreveable/mousetrap"
   packages = ["."]
+  pruneopts = ""
   revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
   version = "v1.0"
 
 [[projects]]
+  digest = "1:76f836364ae83ed811c415aa92e1209ce49de9f62aad85b85fca749a8b96a110"
   name = "github.com/jackpal/go-nat-pmp"
   packages = ["."]
+  pruneopts = ""
   revision = "c9cfead9f2a36ddf3daa40ba269aa7f4bbba6b62"
   version = "v1.0.1"
 
 [[projects]]
   branch = "master"
+  digest = "1:617ee2434b77e911fa26b678730be9a617f75243b194eadc8201c8ac860844aa"
   name = "github.com/jmoiron/sqlx"
   packages = [
     ".",
-    "reflectx"
+    "reflectx",
   ]
+  pruneopts = ""
   revision = "0dae4fefe7c0e190f7b5a78dac28a1c82cc8d849"
 
+[[projects]]
+  digest = "1:6a874e3ddfb9db2b42bd8c85b6875407c702fa868eed20634ff489bc896ccfd3"
+  name = "github.com/konsorten/go-windows-terminal-sequences"
+  packages = ["."]
+  pruneopts = ""
+  revision = "5c8c8bd35d3832f5d134ae1e1e375b69a4d25242"
+  version = "v1.0.1"
+
 [[projects]]
   branch = "master"
+  digest = "1:29145d7af4adafd72a79df5e41456ac9e232d5a28c1cd4dacf3ff008a217fc10"
   name = "github.com/lib/pq"
   packages = [
     ".",
-    "oid"
+    "oid",
   ]
+  pruneopts = ""
   revision = "4ded0e9383f75c197b3a2aaa6d590ac52df6fd79"
 
 [[projects]]
+  digest = "1:961dc3b1d11f969370533390fdf203813162980c858e1dabe827b60940c909a5"
   name = "github.com/magiconair/properties"
   packages = ["."]
+  pruneopts = ""
   revision = "c2353362d570a7bfa228149c62842019201cfb71"
   version = "v1.8.0"
 
 [[projects]]
+  digest = "1:096a8a9182648da3d00ff243b88407838902b6703fc12657f76890e08d1899bf"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
+  pruneopts = ""
   revision = "ae18d6b8b3205b561c79e8e5f69bff09736185f4"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:5219b4506253ccc598f9340677162a42d6a78f340a4cc6df2d62db4d0593c4e9"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
+  pruneopts = ""
   revision = "fa473d140ef3c6adf42d6b391fe76707f1f243c8"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:a7fd918fb5bd2188436785c0424f8a50b4addfedf37a2b14d796be2a927b8007"
   name = "github.com/onsi/ginkgo"
   packages = [
     ".",
@@ -200,12 +247,14 @@
     "reporters/stenographer",
     "reporters/stenographer/support/go-colorable",
     "reporters/stenographer/support/go-isatty",
-    "types"
+    "types",
   ]
+  pruneopts = ""
   revision = "3774a09d95489ccaa16032e0770d08ea77ba6184"
   version = "v1.6.0"
 
 [[projects]]
+  digest = "1:3ecd0a37c4a90c12a97e31c398cdbc173824351aa891898ee178120bfe71c478"
   name = "github.com/onsi/gomega"
   packages = [
     ".",
@@ -220,82 +269,114 @@
     "matchers/support/goraph/edge",
     "matchers/support/goraph/node",
     "matchers/support/goraph/util",
-    "types"
+    "types",
   ]
+  pruneopts = ""
   revision = "7615b9433f86a8bdf29709bf288bc4fd0636a369"
   version = "v1.4.2"
 
 [[projects]]
+  digest = "1:a5484d4fa43127138ae6e7b2299a6a52ae006c7f803d98d717f60abf3e97192e"
   name = "github.com/pborman/uuid"
   packages = ["."]
+  pruneopts = ""
   revision = "adf5a7427709b9deb95d29d3fa8a2bf9cfd388f1"
   version = "v1.2"
 
 [[projects]]
+  digest = "1:894aef961c056b6d85d12bac890bf60c44e99b46292888bfa66caf529f804457"
   name = "github.com/pelletier/go-toml"
   packages = ["."]
+  pruneopts = ""
   revision = "c01d1270ff3e442a8a57cddc1c92dc1138598194"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:210286d0cb60ffe28f1ca00b664029e8943009f95d06d8f8c336301b28e1aee5"
   name = "github.com/philhofer/fwd"
   packages = ["."]
+  pruneopts = ""
   revision = "bb6d471dc95d4fe11e432687f8b70ff496cf3136"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:7143292549152d009ca9e9c493b74736a2ebd93f921bea8a4b308d7cc5edc6b3"
   name = "github.com/rjeczalik/notify"
   packages = ["."]
+  pruneopts = ""
   revision = "0f065fa99b48b842c3fd3e2c8b194c6f2b69f6b8"
   version = "v0.9.1"
 
 [[projects]]
+  digest = "1:78c9cf43ddeacd0e472f412082227a0fac2ae107ee60e9112156f9371f9912cf"
   name = "github.com/rs/cors"
   packages = ["."]
+  pruneopts = ""
   revision = "3fb1b69b103a84de38a19c3c6ec073dd6caa4d3f"
   version = "v1.5.0"
 
 [[projects]]
+  digest = "1:9d57e200ef5ccc4217fe0a34287308bac652435e7c6513f6263e0493d2245c56"
+  name = "github.com/sirupsen/logrus"
+  packages = ["."]
+  pruneopts = ""
+  revision = "bcd833dfe83d3cebad139e4a29ed79cb2318bf95"
+  version = "v1.2.0"
+
+[[projects]]
+  digest = "1:d0431c2fd72e39ee43ea7742322abbc200c3e704c9102c5c3c2e2e667095b0ca"
   name = "github.com/spf13/afero"
   packages = [
     ".",
-    "mem"
+    "mem",
   ]
+  pruneopts = ""
   revision = "d40851caa0d747393da1ffb28f7f9d8b4eeffebd"
   version = "v1.1.2"
 
 [[projects]]
+  digest = "1:d0b38ba6da419a6d4380700218eeec8623841d44a856bb57369c172fbf692ab4"
   name = "github.com/spf13/cast"
   packages = ["."]
+  pruneopts = ""
   revision = "8965335b8c7107321228e3e3702cab9832751bac"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:a1403cc8a94b8d7956ee5e9694badef0e7b051af289caad1cf668331e3ffa4f6"
   name = "github.com/spf13/cobra"
   packages = ["."]
+  pruneopts = ""
   revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
   version = "v0.0.3"
 
 [[projects]]
+  digest = "1:9ceffa4ab5f7195ecf18b3a7fff90c837a9ed5e22e66d18069e4bccfe1f52aa0"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
+  pruneopts = ""
   revision = "4a4406e478ca629068e7768fc33f3f044173c0a6"
   version = "v1.0.0"
 
 [[projects]]
+  digest = "1:0a52bcb568386d98f4894575d53ce3e456f56471de6897bb8b9de13c33d9340e"
   name = "github.com/spf13/pflag"
   packages = ["."]
+  pruneopts = ""
   revision = "9a97c102cda95a86cec2345a6f09f55a939babf5"
   version = "v1.0.2"
 
 [[projects]]
+  digest = "1:ac25ea6cc1156aca9611411274b4a0bdd83a623845df6985aab508253955cc66"
   name = "github.com/spf13/viper"
   packages = ["."]
+  pruneopts = ""
   revision = "8fb642006536c8d3760c99d4fa2389f5e2205631"
   version = "v1.2.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:ce5194e5afac308cc34e500cab45b4ce88a0742d689e3cf7e37b607ad76bed2f"
   name = "github.com/syndtr/goleveldb"
   packages = [
     "leveldb",
@@ -309,53 +390,66 @@
     "leveldb/opt",
     "leveldb/storage",
     "leveldb/table",
-    "leveldb/util"
+    "leveldb/util",
   ]
+  pruneopts = ""
   revision = "ae2bd5eed72d46b28834ec3f60db3a3ebedd8dbd"
 
 [[projects]]
+  digest = "1:cae65c1f3471b1f456a9d8a160440f4824ad50c718a15da4144490fbc3b12e49"
   name = "github.com/tinylib/msgp"
   packages = ["msgp"]
+  pruneopts = ""
   revision = "b2b6a672cf1e5b90748f79b8b81fc8c5cf0571a1"
   version = "1.0.2"
 
 [[projects]]
   branch = "master"
+  digest = "1:61a86f0be8b466d6e3fbdabb155aaa4006137cb5e3fd3b949329d103fa0ceb0f"
   name = "golang.org/x/crypto"
   packages = [
     "pbkdf2",
-    "scrypt"
+    "scrypt",
+    "ssh/terminal",
   ]
+  pruneopts = ""
   revision = "0e37d006457bf46f9e6692014ba72ef82c33022c"
 
 [[projects]]
   branch = "master"
+  digest = "1:fbdbb6cf8db3278412c9425ad78b26bb8eb788181f26a3ffb3e4f216b314f86a"
   name = "golang.org/x/net"
   packages = [
     "context",
     "html",
     "html/atom",
     "html/charset",
-    "websocket"
+    "websocket",
   ]
+  pruneopts = ""
   revision = "26e67e76b6c3f6ce91f7c52def5af501b4e0f3a2"
 
 [[projects]]
   branch = "master"
+  digest = "1:b2ea75de0ccb2db2ac79356407f8a4cd8f798fe15d41b381c00abf3ae8e55ed1"
   name = "golang.org/x/sync"
   packages = ["errgroup"]
+  pruneopts = ""
   revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
 
 [[projects]]
   branch = "master"
+  digest = "1:70d519d5cddeb60ceda2db88c24c340b1b2d7efb25ab54bacb38f57ea1998df7"
   name = "golang.org/x/sys"
   packages = [
     "unix",
-    "windows"
+    "windows",
   ]
+  pruneopts = ""
   revision = "d641721ec2dead6fe5ca284096fe4b1fcd49e427"
 
 [[projects]]
+  digest = "1:5acd3512b047305d49e8763eef7ba423901e85d5dd2fd1e71778a0ea8de10bd4"
   name = "golang.org/x/text"
   packages = [
     "encoding",
@@ -377,50 +471,88 @@
     "runes",
     "transform",
     "unicode/cldr",
-    "unicode/norm"
+    "unicode/norm",
   ]
+  pruneopts = ""
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
 [[projects]]
+  digest = "1:be560af8c72c59788a6748eae60b8e1fe136fefdf049b7dfb6f5b591ea337984"
   name = "gopkg.in/DataDog/dd-trace-go.v1"
   packages = [
     "ddtrace",
     "ddtrace/ext",
     "ddtrace/internal",
-    "ddtrace/tracer"
+    "ddtrace/tracer",
   ]
+  pruneopts = ""
   revision = "bcd20367df871708a36549e7fe36183ee5b4fc55"
   version = "v1.3.0"
 
 [[projects]]
+  digest = "1:eb53021a8aa3f599d29c7102e65026242bdedce998a54837dc67f14b6a97c5fd"
   name = "gopkg.in/fsnotify.v1"
   packages = ["."]
+  pruneopts = ""
   revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
   source = "gopkg.in/fsnotify/fsnotify.v1"
   version = "v1.4.7"
 
 [[projects]]
   branch = "v2"
+  digest = "1:4f830ee018eb8c56d0def653ad7c9a1d2a053f0cef2ac6b2200f73b98fa6a681"
   name = "gopkg.in/natefinch/npipe.v2"
   packages = ["."]
+  pruneopts = ""
   revision = "c1b8fa8bdccecb0b8db834ee0b92fdbcfa606dd6"
 
 [[projects]]
   branch = "v1"
+  digest = "1:a96d16bd088460f2e0685d46c39bcf1208ba46e0a977be2df49864ec7da447dd"
   name = "gopkg.in/tomb.v1"
   packages = ["."]
+  pruneopts = ""
   revision = "dd632973f1e7218eb1089048e0798ec9ae7dceb8"
 
 [[projects]]
+  digest = "1:f0620375dd1f6251d9973b5f2596228cc8042e887cd7f827e4220bc1ce8c30e2"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
+  pruneopts = ""
   revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
   version = "v2.2.1"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "2fbede45ac5daf4cab0ad947ea580193383fddfe0b5d1ab924bd61959839ba1c"
+  input-imports = [
+    "github.com/ethereum/go-ethereum",
+    "github.com/ethereum/go-ethereum/accounts/abi",
+    "github.com/ethereum/go-ethereum/accounts/abi/bind",
+    "github.com/ethereum/go-ethereum/common",
+    "github.com/ethereum/go-ethereum/common/hexutil",
+    "github.com/ethereum/go-ethereum/core/rawdb",
+    "github.com/ethereum/go-ethereum/core/types",
+    "github.com/ethereum/go-ethereum/crypto",
+    "github.com/ethereum/go-ethereum/ethclient",
+    "github.com/ethereum/go-ethereum/ethdb",
+    "github.com/ethereum/go-ethereum/p2p",
+    "github.com/ethereum/go-ethereum/p2p/discv5",
+    "github.com/ethereum/go-ethereum/params",
+    "github.com/ethereum/go-ethereum/rpc",
+    "github.com/jmoiron/sqlx",
+    "github.com/lib/pq",
+    "github.com/mitchellh/go-homedir",
+    "github.com/onsi/ginkgo",
+    "github.com/onsi/gomega",
+    "github.com/onsi/gomega/ghttp",
+    "github.com/sirupsen/logrus",
+    "github.com/spf13/cobra",
+    "github.com/spf13/viper",
+    "golang.org/x/net/context",
+    "golang.org/x/sync/errgroup",
+    "gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer",
+  ]
   solver-name = "gps-cdcl"
   solver-version = 1

README.md

@@ -18,7 +18,6 @@ Vulcanize DB is a set of tools that make it easier for developers to write appli
 ## Installation
 `go get github.com/vulcanize/vulcanizedb`
 `go get gopkg.in/DataDog/dd-trace-go.v1/ddtrace`
-`go get gopkg.in/Sirupsen/logrus.v1`
 
 ## Setting up the Database
 1. Install Postgres

vendor/github.com/konsorten/go-windows-terminal-sequences/LICENSE

@@ -0,0 +1,9 @@
+(The MIT License)
+
+Copyright (c) 2017 marvin + konsorten GmbH (open-source@konsorten.de)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/konsorten/go-windows-terminal-sequences/README.md

@@ -0,0 +1,40 @@
+# Windows Terminal Sequences
+
+This library allow for enabling Windows terminal color support for Go.
+
+See [Console Virtual Terminal Sequences](https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences) for details.
+
+## Usage
+
+```go
+import (
+	"syscall"
+	
+	sequences "github.com/konsorten/go-windows-terminal-sequences"
+)
+
+func main() {
+	sequences.EnableVirtualTerminalProcessing(syscall.Stdout, true)
+}
+
+```
+
+## Authors
+
+The tool is sponsored by the [marvin + konsorten GmbH](http://www.konsorten.de).
+
+We thank all the authors who provided code to this library:
+
+* Felix Kollmann
+
+## License
+
+(The MIT License)
+
+Copyright (c) 2018 marvin + konsorten GmbH (open-source@konsorten.de)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/konsorten/go-windows-terminal-sequences/go.mod

@@ -0,0 +1 @@
+module github.com/konsorten/go-windows-terminal-sequences

vendor/github.com/konsorten/go-windows-terminal-sequences/sequences.go

@@ -0,0 +1,36 @@
+// +build windows
+
+package sequences
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var (
+	kernel32Dll    *syscall.LazyDLL  = syscall.NewLazyDLL("Kernel32.dll")
+	setConsoleMode *syscall.LazyProc = kernel32Dll.NewProc("SetConsoleMode")
+)
+
+func EnableVirtualTerminalProcessing(stream syscall.Handle, enable bool) error {
+	const ENABLE_VIRTUAL_TERMINAL_PROCESSING uint32 = 0x4
+
+	var mode uint32
+	err := syscall.GetConsoleMode(syscall.Stdout, &mode)
+	if err != nil {
+		return err
+	}
+
+	if enable {
+		mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING
+	} else {
+		mode &^= ENABLE_VIRTUAL_TERMINAL_PROCESSING
+	}
+
+	ret, _, err := setConsoleMode.Call(uintptr(unsafe.Pointer(stream)), uintptr(mode))
+	if ret == 0 {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/konsorten/go-windows-terminal-sequences/sequences_test.go

@@ -0,0 +1,48 @@
+// +build windows
+
+package sequences
+
+import (
+	"fmt"
+	"os"
+	"syscall"
+	"testing"
+)
+
+func TestStdoutSequencesOn(t *testing.T) {
+	err := EnableVirtualTerminalProcessing(syscall.Stdout, true)
+	if err != nil {
+		t.Fatalf("Failed to enable VTP: %v", err)
+	}
+	defer EnableVirtualTerminalProcessing(syscall.Stdout, false)
+
+	fmt.Fprintf(os.Stdout, "\x1b[34mHello \x1b[35mWorld\x1b[0m!\n")
+}
+
+func TestStdoutSequencesOff(t *testing.T) {
+	err := EnableVirtualTerminalProcessing(syscall.Stdout, false)
+	if err != nil {
+		t.Fatalf("Failed to enable VTP: %v", err)
+	}
+
+	fmt.Fprintf(os.Stdout, "\x1b[34mHello \x1b[35mWorld\x1b[0m!\n")
+}
+
+func TestStderrSequencesOn(t *testing.T) {
+	err := EnableVirtualTerminalProcessing(syscall.Stderr, true)
+	if err != nil {
+		t.Fatalf("Failed to enable VTP: %v", err)
+	}
+	defer EnableVirtualTerminalProcessing(syscall.Stderr, false)
+
+	fmt.Fprintf(os.Stderr, "\x1b[34mHello \x1b[35mWorld\x1b[0m!\n")
+}
+
+func TestStderrSequencesOff(t *testing.T) {
+	err := EnableVirtualTerminalProcessing(syscall.Stderr, false)
+	if err != nil {
+		t.Fatalf("Failed to enable VTP: %v", err)
+	}
+
+	fmt.Fprintf(os.Stderr, "\x1b[34mHello \x1b[35mWorld\x1b[0m!\n")
+}

vendor/github.com/sirupsen/logrus/.gitignore

@@ -0,0 +1,2 @@
+logrus
+vendor

vendor/github.com/sirupsen/logrus/.travis.yml

@@ -0,0 +1,51 @@
+language: go
+env:
+  - GOMAXPROCS=4 GORACE=halt_on_error=1
+matrix:
+  include:
+    - go: 1.10.x
+      install:
+        - go get github.com/stretchr/testify/assert
+        - go get golang.org/x/crypto/ssh/terminal
+        - go get golang.org/x/sys/unix
+        - go get golang.org/x/sys/windows
+      script:
+        - go test -race -v ./...
+    - go: 1.11.x
+      env: GO111MODULE=on
+      install:
+        - go mod download
+      script:
+        - go test -race -v ./...
+    - go: 1.11.x
+      env: GO111MODULE=off
+      install:
+        - go get github.com/stretchr/testify/assert
+        - go get golang.org/x/crypto/ssh/terminal
+        - go get golang.org/x/sys/unix
+        - go get golang.org/x/sys/windows
+      script:
+        - go test -race -v ./...
+    - go: 1.10.x
+      install:
+        - go get github.com/stretchr/testify/assert
+        - go get golang.org/x/crypto/ssh/terminal
+        - go get golang.org/x/sys/unix
+        - go get golang.org/x/sys/windows
+      script:
+        - go test -race -v -tags appengine ./...
+    - go: 1.11.x
+      env: GO111MODULE=on
+      install:
+        - go mod download
+      script:
+        - go test -race -v -tags appengine ./...
+    - go: 1.11.x
+      env: GO111MODULE=off
+      install:
+        - go get github.com/stretchr/testify/assert
+        - go get golang.org/x/crypto/ssh/terminal
+        - go get golang.org/x/sys/unix
+        - go get golang.org/x/sys/windows
+      script:
+        - go test -race -v -tags appengine ./...

vendor/github.com/sirupsen/logrus/CHANGELOG.md

@@ -0,0 +1,165 @@
+# 1.2.0
+This new release introduces:
+  * A new method `SetReportCaller` in the `Logger` to enable the file, line and calling function from which the trace has been issued
+  * A new trace level named `Trace` whose level is below `Debug`
+  * A configurable exit function to be called upon a Fatal trace
+  * The `Level` object now implements `encoding.TextUnmarshaler` interface
+
+# 1.1.1
+This is a bug fix release.
+  * fix the build break on Solaris
+  * don't drop a whole trace in JSONFormatter when a field param is a function pointer which can not be serialized
+
+# 1.1.0
+This new release introduces:
+  * several fixes:
+    * a fix for a race condition on entry formatting
+    * proper cleanup of previously used entries before putting them back in the pool
+    * the extra new line at the end of message in text formatter has been removed
+  * a new global public API to check if a level is activated: IsLevelEnabled
+  * the following methods have been added to the Logger object
+    * IsLevelEnabled
+    * SetFormatter
+    * SetOutput
+    * ReplaceHooks
+  * introduction of go module
+  * an indent configuration for the json formatter
+  * output colour support for windows
+  * the field sort function is now configurable for text formatter
+  * the CLICOLOR and CLICOLOR\_FORCE environment variable support in text formater
+
+# 1.0.6
+
+This new release introduces:
+  * a new api WithTime which allows to easily force the time of the log entry
+    which is mostly useful for logger wrapper
+  * a fix reverting the immutability of the entry given as parameter to the hooks
+    a new configuration field of the json formatter in order to put all the fields
+    in a nested dictionnary
+  * a new SetOutput method in the Logger
+  * a new configuration of the textformatter to configure the name of the default keys
+  * a new configuration of the text formatter to disable the level truncation
+
+# 1.0.5
+
+* Fix hooks race (#707)
+* Fix panic deadlock (#695)
+
+# 1.0.4
+
+* Fix race when adding hooks (#612)
+* Fix terminal check in AppEngine (#635)
+
+# 1.0.3
+
+* Replace example files with testable examples
+
+# 1.0.2
+
+* bug: quote non-string values in text formatter (#583)
+* Make (*Logger) SetLevel a public method
+
+# 1.0.1
+
+* bug: fix escaping in text formatter (#575)
+
+# 1.0.0
+
+* Officially changed name to lower-case
+* bug: colors on Windows 10 (#541)
+* bug: fix race in accessing level (#512)
+
+# 0.11.5
+
+* feature: add writer and writerlevel to entry (#372)
+
+# 0.11.4
+
+* bug: fix undefined variable on solaris (#493)
+
+# 0.11.3
+
+* formatter: configure quoting of empty values (#484)
+* formatter: configure quoting character (default is `"`) (#484)
+* bug: fix not importing io correctly in non-linux environments (#481)
+
+# 0.11.2
+
+* bug: fix windows terminal detection (#476)
+
+# 0.11.1
+
+* bug: fix tty detection with custom out (#471)
+
+# 0.11.0
+
+* performance: Use bufferpool to allocate (#370)
+* terminal: terminal detection for app-engine (#343)
+* feature: exit handler (#375)
+
+# 0.10.0
+
+* feature: Add a test hook (#180)
+* feature: `ParseLevel` is now case-insensitive (#326)
+* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
+* performance: avoid re-allocations on `WithFields` (#335)
+
+# 0.9.0
+
+* logrus/text_formatter: don't emit empty msg
+* logrus/hooks/airbrake: move out of main repository
+* logrus/hooks/sentry: move out of main repository
+* logrus/hooks/papertrail: move out of main repository
+* logrus/hooks/bugsnag: move out of main repository
+* logrus/core: run tests with `-race`
+* logrus/core: detect TTY based on `stderr`
+* logrus/core: support `WithError` on logger
+* logrus/core: Solaris support
+
+# 0.8.7
+
+* logrus/core: fix possible race (#216)
+* logrus/doc: small typo fixes and doc improvements
+
+
+# 0.8.6
+
+* hooks/raven: allow passing an initialized client
+
+# 0.8.5
+
+* logrus/core: revert #208
+
+# 0.8.4
+
+* formatter/text: fix data race (#218)
+
+# 0.8.3
+
+* logrus/core: fix entry log level (#208)
+* logrus/core: improve performance of text formatter by 40%
+* logrus/core: expose `LevelHooks` type
+* logrus/core: add support for DragonflyBSD and NetBSD
+* formatter/text: print structs more verbosely
+
+# 0.8.2
+
+* logrus: fix more Fatal family functions
+
+# 0.8.1
+
+* logrus: fix not exiting on `Fatalf` and `Fatalln`
+
+# 0.8.0
+
+* logrus: defaults to stderr instead of stdout
+* hooks/sentry: add special field for `*http.Request`
+* formatter/text: ignore Windows for colors
+
+# 0.7.3
+
+* formatter/\*: allow configuration of timestamp layout
+
+# 0.7.2
+
+* formatter/text: Add configuration option for time format (#158)

vendor/github.com/sirupsen/logrus/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Simon Eskildsen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/sirupsen/logrus/README.md

@@ -0,0 +1,493 @@
+# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
+
+Logrus is a structured logger for Go (golang), completely API compatible with
+the standard library logger.
+
+**Seeing weird case-sensitive problems?** It's in the past been possible to
+import Logrus as both upper- and lower-case. Due to the Go package environment,
+this caused issues in the community and we needed a standard. Some environments
+experienced problems with the upper-case variant, so the lower-case was decided.
+Everything using `logrus` will need to use the lower-case:
+`github.com/sirupsen/logrus`. Any package that isn't, should be changed.
+
+To fix Glide, see [these
+comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
+For an in-depth explanation of the casing issue, see [this
+comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
+
+**Are you interested in assisting in maintaining Logrus?** Currently I have a
+lot of obligations, and I am unable to provide Logrus with the maintainership it
+needs. If you'd like to help, please reach out to me at `simon at author's
+username dot com`.
+
+Nicely color-coded in development (when a TTY is attached, otherwise just
+plain text):
+
+![Colored](http://i.imgur.com/PY7qMwd.png)
+
+With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
+or Splunk:
+
+```json
+{"animal":"walrus","level":"info","msg":"A group of walrus emerges from the
+ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
+
+{"level":"warning","msg":"The group's number increased tremendously!",
+"number":122,"omg":true,"time":"2014-03-10 19:57:38.562471297 -0400 EDT"}
+
+{"animal":"walrus","level":"info","msg":"A giant walrus appears!",
+"size":10,"time":"2014-03-10 19:57:38.562500591 -0400 EDT"}
+
+{"animal":"walrus","level":"info","msg":"Tremendously sized cow enters the ocean.",
+"size":9,"time":"2014-03-10 19:57:38.562527896 -0400 EDT"}
+
+{"level":"fatal","msg":"The ice breaks!","number":100,"omg":true,
+"time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
+```
+
+With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
+attached, the output is compatible with the
+[logfmt](http://godoc.org/github.com/kr/logfmt) format:
+
+```text
+time="2015-03-26T01:27:38-04:00" level=debug msg="Started observing beach" animal=walrus number=8
+time="2015-03-26T01:27:38-04:00" level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
+time="2015-03-26T01:27:38-04:00" level=warning msg="The group's number increased tremendously!" number=122 omg=true
+time="2015-03-26T01:27:38-04:00" level=debug msg="Temperature changes" temperature=-4
+time="2015-03-26T01:27:38-04:00" level=panic msg="It's over 9000!" animal=orca size=9009
+time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x2082280c0 map[animal:orca size:9009] 2015-03-26 01:27:38.441574009 -0400 EDT panic It's over 9000!} number=100 omg=true
+```
+To ensure this behaviour even if a TTY is attached, set your formatter as follows:
+
+```go
+	log.SetFormatter(&log.TextFormatter{
+		DisableColors: true,
+		FullTimestamp: true,
+	})
+```
+
+#### Logging Method Name
+
+If you wish to add the calling method as a field, instruct the logger via:
+```go
+log.SetReportCaller(true)
+```
+This adds the caller as 'method' like so:
+
+```json
+{"animal":"penguin","level":"fatal","method":"github.com/sirupsen/arcticcreatures.migrate","msg":"a penguin swims by",
+"time":"2014-03-10 19:57:38.562543129 -0400 EDT"}
+```
+
+```text
+time="2015-03-26T01:27:38-04:00" level=fatal method=github.com/sirupsen/arcticcreatures.migrate msg="a penguin swims by" animal=penguin
+```
+Note that this does add measurable overhead - the cost will depend on the version of Go, but is
+between 20 and 40% in recent tests with 1.6 and 1.7.  You can validate this in your
+environment via benchmarks: 
+```
+go test -bench=.*CallerTracing
+```
+
+
+#### Case-sensitivity
+
+The organization's name was changed to lower-case--and this will not be changed
+back. If you are getting import conflicts due to case sensitivity, please use
+the lower-case import: `github.com/sirupsen/logrus`.
+
+#### Example
+
+The simplest way to use Logrus is simply the package-level exported logger:
+
+```go
+package main
+
+import (
+  log "github.com/sirupsen/logrus"
+)
+
+func main() {
+  log.WithFields(log.Fields{
+    "animal": "walrus",
+  }).Info("A walrus appears")
+}
+```
+
+Note that it's completely api-compatible with the stdlib logger, so you can
+replace your `log` imports everywhere with `log "github.com/sirupsen/logrus"`
+and you'll now have the flexibility of Logrus. You can customize it all you
+want:
+
+```go
+package main
+
+import (
+  "os"
+  log "github.com/sirupsen/logrus"
+)
+
+func init() {
+  // Log as JSON instead of the default ASCII formatter.
+  log.SetFormatter(&log.JSONFormatter{})
+
+  // Output to stdout instead of the default stderr
+  // Can be any io.Writer, see below for File example
+  log.SetOutput(os.Stdout)
+
+  // Only log the warning severity or above.
+  log.SetLevel(log.WarnLevel)
+}
+
+func main() {
+  log.WithFields(log.Fields{
+    "animal": "walrus",
+    "size":   10,
+  }).Info("A group of walrus emerges from the ocean")
+
+  log.WithFields(log.Fields{
+    "omg":    true,
+    "number": 122,
+  }).Warn("The group's number increased tremendously!")
+
+  log.WithFields(log.Fields{
+    "omg":    true,
+    "number": 100,
+  }).Fatal("The ice breaks!")
+
+  // A common pattern is to re-use fields between logging statements by re-using
+  // the logrus.Entry returned from WithFields()
+  contextLogger := log.WithFields(log.Fields{
+    "common": "this is a common field",
+    "other": "I also should be logged always",
+  })
+
+  contextLogger.Info("I'll be logged with common and other field")
+  contextLogger.Info("Me too")
+}
+```
+
+For more advanced usage such as logging to multiple locations from the same
+application, you can also create an instance of the `logrus` Logger:
+
+```go
+package main
+
+import (
+  "os"
+  "github.com/sirupsen/logrus"
+)
+
+// Create a new instance of the logger. You can have any number of instances.
+var log = logrus.New()
+
+func main() {
+  // The API for setting attributes is a little different than the package level
+  // exported logger. See Godoc.
+  log.Out = os.Stdout
+
+  // You could set this to any `io.Writer` such as a file
+  // file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
+  // if err == nil {
+  //  log.Out = file
+  // } else {
+  //  log.Info("Failed to log to file, using default stderr")
+  // }
+
+  log.WithFields(logrus.Fields{
+    "animal": "walrus",
+    "size":   10,
+  }).Info("A group of walrus emerges from the ocean")
+}
+```
+
+#### Fields
+
+Logrus encourages careful, structured logging through logging fields instead of
+long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
+to send event %s to topic %s with key %d")`, you should log the much more
+discoverable:
+
+```go
+log.WithFields(log.Fields{
+  "event": event,
+  "topic": topic,
+  "key": key,
+}).Fatal("Failed to send event")
+```
+
+We've found this API forces you to think about logging in a way that produces
+much more useful logging messages. We've been in countless situations where just
+a single added field to a log statement that was already there would've saved us
+hours. The `WithFields` call is optional.
+
+In general, with Logrus using any of the `printf`-family functions should be
+seen as a hint you should add a field, however, you can still use the
+`printf`-family functions with Logrus.
+
+#### Default Fields
+
+Often it's helpful to have fields _always_ attached to log statements in an
+application or parts of one. For example, you may want to always log the
+`request_id` and `user_ip` in the context of a request. Instead of writing
+`log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})` on
+every line, you can create a `logrus.Entry` to pass around instead:
+
+```go
+requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
+requestLogger.Info("something happened on that request") # will log request_id and user_ip
+requestLogger.Warn("something not great happened")
+```
+
+#### Hooks
+
+You can add hooks for logging levels. For example to send errors to an exception
+tracking service on `Error`, `Fatal` and `Panic`, info to StatsD or log to
+multiple places simultaneously, e.g. syslog.
+
+Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
+`init`:
+
+```go
+import (
+  log "github.com/sirupsen/logrus"
+  "gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "airbrake"
+  logrus_syslog "github.com/sirupsen/logrus/hooks/syslog"
+  "log/syslog"
+)
+
+func init() {
+
+  // Use the Airbrake hook to report errors that have Error severity or above to
+  // an exception tracker. You can create custom hooks, see the Hooks section.
+  log.AddHook(airbrake.NewHook(123, "xyz", "production"))
+
+  hook, err := logrus_syslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
+  if err != nil {
+    log.Error("Unable to connect to local syslog daemon")
+  } else {
+    log.AddHook(hook)
+  }
+}
+```
+Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
+
+A list of currently known of service hook can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
+
+
+#### Level logging
+
+Logrus has seven logging levels: Trace, Debug, Info, Warning, Error, Fatal and Panic.
+
+```go
+log.Trace("Something very low level.")
+log.Debug("Useful debugging information.")
+log.Info("Something noteworthy happened!")
+log.Warn("You should probably take a look at this.")
+log.Error("Something failed but I'm not quitting.")
+// Calls os.Exit(1) after logging
+log.Fatal("Bye.")
+// Calls panic() after logging
+log.Panic("I'm bailing.")
+```
+
+You can set the logging level on a `Logger`, then it will only log entries with
+that severity or anything above it:
+
+```go
+// Will log anything that is info or above (warn, error, fatal, panic). Default.
+log.SetLevel(log.InfoLevel)
+```
+
+It may be useful to set `log.Level = logrus.DebugLevel` in a debug or verbose
+environment if your application has that.
+
+#### Entries
+
+Besides the fields added with `WithField` or `WithFields` some fields are
+automatically added to all logging events:
+
+1. `time`. The timestamp when the entry was created.
+2. `msg`. The logging message passed to `{Info,Warn,Error,Fatal,Panic}` after
+   the `AddFields` call. E.g. `Failed to send event.`
+3. `level`. The logging level. E.g. `info`.
+
+#### Environments
+
+Logrus has no notion of environment.
+
+If you wish for hooks and formatters to only be used in specific environments,
+you should handle that yourself. For example, if your application has a global
+variable `Environment`, which is a string representation of the environment you
+could do:
+
+```go
+import (
+  log "github.com/sirupsen/logrus"
+)
+
+init() {
+  // do something here to set environment depending on an environment variable
+  // or command-line flag
+  if Environment == "production" {
+    log.SetFormatter(&log.JSONFormatter{})
+  } else {
+    // The TextFormatter is default, you don't actually have to do this.
+    log.SetFormatter(&log.TextFormatter{})
+  }
+}
+```
+
+This configuration is how `logrus` was intended to be used, but JSON in
+production is mostly only useful if you do log aggregation with tools like
+Splunk or Logstash.
+
+#### Formatters
+
+The built-in logging formatters are:
+
+* `logrus.TextFormatter`. Logs the event in colors if stdout is a tty, otherwise
+  without colors.
+  * *Note:* to force colored output when there is no TTY, set the `ForceColors`
+    field to `true`.  To force no colored output even if there is a TTY  set the
+    `DisableColors` field to `true`. For Windows, see
+    [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
+  * When colors are enabled, levels are truncated to 4 characters by default. To disable
+    truncation set the `DisableLevelTruncation` field to `true`.
+  * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
+* `logrus.JSONFormatter`. Logs fields as JSON.
+  * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
+
+Third party logging formatters:
+
+* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can be parsed by Kubernetes and Google Container Engine.
+* [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
+* [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
+* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
+
+You can define your formatter by implementing the `Formatter` interface,
+requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
+`Fields` type (`map[string]interface{}`) with all your fields as well as the
+default ones (see Entries section above):
+
+```go
+type MyJSONFormatter struct {
+}
+
+log.SetFormatter(new(MyJSONFormatter))
+
+func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
+  // Note this doesn't include Time, Level and Message which are available on
+  // the Entry. Consult `godoc` on information about those fields or read the
+  // source of the official loggers.
+  serialized, err := json.Marshal(entry.Data)
+    if err != nil {
+      return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+    }
+  return append(serialized, '\n'), nil
+}
+```
+
+#### Logger as an `io.Writer`
+
+Logrus can be transformed into an `io.Writer`. That writer is the end of an `io.Pipe` and it is your responsibility to close it.
+
+```go
+w := logger.Writer()
+defer w.Close()
+
+srv := http.Server{
+    // create a stdlib log.Logger that writes to
+    // logrus.Logger.
+    ErrorLog: log.New(w, "", 0),
+}
+```
+
+Each line written to that writer will be printed the usual way, using formatters
+and hooks. The level for those entries is `info`.
+
+This means that we can override the standard library logger easily:
+
+```go
+logger := logrus.New()
+logger.Formatter = &logrus.JSONFormatter{}
+
+// Use logrus for standard log output
+// Note that `log` here references stdlib's log
+// Not logrus imported under the name `log`.
+log.SetOutput(logger.Writer())
+```
+
+#### Rotation
+
+Log rotation is not provided with Logrus. Log rotation should be done by an
+external program (like `logrotate(8)`) that can compress and delete old log
+entries. It should not be a feature of the application-level logger.
+
+#### Tools
+
+| Tool | Description |
+| ---- | ----------- |
+|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
+|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
+
+#### Testing
+
+Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
+
+* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
+* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
+
+```go
+import(
+  "github.com/sirupsen/logrus"
+  "github.com/sirupsen/logrus/hooks/test"
+  "github.com/stretchr/testify/assert"
+  "testing"
+)
+
+func TestSomething(t*testing.T){
+  logger, hook := test.NewNullLogger()
+  logger.Error("Helloerror")
+
+  assert.Equal(t, 1, len(hook.Entries))
+  assert.Equal(t, logrus.ErrorLevel, hook.LastEntry().Level)
+  assert.Equal(t, "Helloerror", hook.LastEntry().Message)
+
+  hook.Reset()
+  assert.Nil(t, hook.LastEntry())
+}
+```
+
+#### Fatal handlers
+
+Logrus can register one or more functions that will be called when any `fatal`
+level message is logged. The registered handlers will be executed before
+logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
+to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
+
+```
+...
+handler := func() {
+  // gracefully shutdown something...
+}
+logrus.RegisterExitHandler(handler)
+...
+```
+
+#### Thread safety
+
+By default, Logger is protected by a mutex for concurrent writes. The mutex is held when calling hooks and writing logs.
+If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
+
+Situation when locking is not needed includes:
+
+* You have no hooks registered, or hooks calling is already thread-safe.
+
+* Writing to logger.Out is already thread-safe, for example:
+
+  1) logger.Out is protected by locks.
+
+  2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
+
+     (Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

vendor/github.com/sirupsen/logrus/alt_exit.go

@@ -0,0 +1,64 @@
+package logrus
+
+// The following code was sourced and modified from the
+// https://github.com/tebeka/atexit package governed by the following license:
+//
+// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import (
+	"fmt"
+	"os"
+)
+
+var handlers = []func(){}
+
+func runHandler(handler func()) {
+	defer func() {
+		if err := recover(); err != nil {
+			fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
+		}
+	}()
+
+	handler()
+}
+
+func runHandlers() {
+	for _, handler := range handlers {
+		runHandler(handler)
+	}
+}
+
+// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
+func Exit(code int) {
+	runHandlers()
+	os.Exit(code)
+}
+
+// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
+// all handlers. The handlers will also be invoked when any Fatal log entry is
+// made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func RegisterExitHandler(handler func()) {
+	handlers = append(handlers, handler)
+}

vendor/github.com/sirupsen/logrus/alt_exit_test.go

@@ -0,0 +1,99 @@
+package logrus
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestRegister(t *testing.T) {
+	current := len(handlers)
+	RegisterExitHandler(func() {})
+	if len(handlers) != current+1 {
+		t.Fatalf("expected %d handlers, got %d", current+1, len(handlers))
+	}
+}
+
+func TestHandler(t *testing.T) {
+	testprog := testprogleader
+	testprog = append(testprog, getPackage()...)
+	testprog = append(testprog, testprogtrailer...)
+	tempDir, err := ioutil.TempDir("", "test_handler")
+	if err != nil {
+		log.Fatalf("can't create temp dir. %q", err)
+	}
+	defer os.RemoveAll(tempDir)
+
+	gofile := filepath.Join(tempDir, "gofile.go")
+	if err := ioutil.WriteFile(gofile, testprog, 0666); err != nil {
+		t.Fatalf("can't create go file. %q", err)
+	}
+
+	outfile := filepath.Join(tempDir, "outfile.out")
+	arg := time.Now().UTC().String()
+	err = exec.Command("go", "run", gofile, outfile, arg).Run()
+	if err == nil {
+		t.Fatalf("completed normally, should have failed")
+	}
+
+	data, err := ioutil.ReadFile(outfile)
+	if err != nil {
+		t.Fatalf("can't read output file %s. %q", outfile, err)
+	}
+
+	if string(data) != arg {
+		t.Fatalf("bad data. Expected %q, got %q", data, arg)
+	}
+}
+
+// getPackage returns the name of the current package, which makes running this
+// test in a fork simpler
+func getPackage() []byte {
+	pc, _, _, _ := runtime.Caller(0)
+	fullFuncName := runtime.FuncForPC(pc).Name()
+	idx := strings.LastIndex(fullFuncName, ".")
+	return []byte(fullFuncName[:idx]) // trim off function details
+}
+
+var testprogleader = []byte(`
+// Test program for atexit, gets output file and data as arguments and writes
+// data to output file in atexit handler.
+package main
+
+import (
+	"`)
+var testprogtrailer = []byte(
+	`"
+	"flag"
+	"fmt"
+	"io/ioutil"
+)
+
+var outfile = ""
+var data = ""
+
+func handler() {
+	ioutil.WriteFile(outfile, []byte(data), 0666)
+}
+
+func badHandler() {
+	n := 0
+	fmt.Println(1/n)
+}
+
+func main() {
+	flag.Parse()
+	outfile = flag.Arg(0)
+	data = flag.Arg(1)
+
+	logrus.RegisterExitHandler(handler)
+	logrus.RegisterExitHandler(badHandler)
+	logrus.Fatal("Bye bye")
+}
+`)

vendor/github.com/sirupsen/logrus/appveyor.yml

@@ -0,0 +1,14 @@
+version: "{build}"
+platform: x64
+clone_folder: c:\gopath\src\github.com\sirupsen\logrus
+environment:  
+  GOPATH: c:\gopath
+branches:  
+  only:
+    - master
+install:  
+  - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
+  - go version
+build_script:  
+  - go get -t
+  - go test

vendor/github.com/sirupsen/logrus/doc.go

@@ -0,0 +1,26 @@
+/*
+Package logrus is a structured logger for Go, completely API compatible with the standard library logger.
+
+
+The simplest way to use Logrus is simply the package-level exported logger:
+
+  package main
+
+  import (
+    log "github.com/sirupsen/logrus"
+  )
+
+  func main() {
+    log.WithFields(log.Fields{
+      "animal": "walrus",
+      "number": 1,
+      "size":   10,
+    }).Info("A walrus appears")
+  }
+
+Output:
+  time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
+
+For a full guide visit https://github.com/sirupsen/logrus
+*/
+package logrus

vendor/github.com/sirupsen/logrus/entry.go

@@ -0,0 +1,408 @@
+package logrus
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"reflect"
+	"runtime"
+	"strings"
+	"sync"
+	"time"
+)
+
+var (
+	bufferPool *sync.Pool
+
+	// qualified package name, cached at first use
+	logrusPackage string
+
+	// Positions in the call stack when tracing to report the calling method
+	minimumCallerDepth int
+
+	// Used for caller information initialisation
+	callerInitOnce sync.Once
+)
+
+const (
+	maximumCallerDepth int = 25
+	knownLogrusFrames  int = 4
+)
+
+func init() {
+	bufferPool = &sync.Pool{
+		New: func() interface{} {
+			return new(bytes.Buffer)
+		},
+	}
+
+	// start at the bottom of the stack before the package-name cache is primed
+	minimumCallerDepth = 1
+}
+
+// Defines the key when adding errors using WithError.
+var ErrorKey = "error"
+
+// An entry is the final or intermediate Logrus logging entry. It contains all
+// the fields passed with WithField{,s}. It's finally logged when Trace, Debug,
+// Info, Warn, Error, Fatal or Panic is called on it. These objects can be
+// reused and passed around as much as you wish to avoid field duplication.
+type Entry struct {
+	Logger *Logger
+
+	// Contains all the fields set by the user.
+	Data Fields
+
+	// Time at which the log entry was created
+	Time time.Time
+
+	// Level the log entry was logged at: Trace, Debug, Info, Warn, Error, Fatal or Panic
+	// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
+	Level Level
+
+	// Calling method, with package name
+	Caller *runtime.Frame
+
+	// Message passed to Trace, Debug, Info, Warn, Error, Fatal or Panic
+	Message string
+
+	// When formatter is called in entry.log(), a Buffer may be set to entry
+	Buffer *bytes.Buffer
+
+	// err may contain a field formatting error
+	err string
+}
+
+func NewEntry(logger *Logger) *Entry {
+	return &Entry{
+		Logger: logger,
+		// Default is three fields, plus one optional.  Give a little extra room.
+		Data: make(Fields, 6),
+	}
+}
+
+// Returns the string representation from the reader and ultimately the
+// formatter.
+func (entry *Entry) String() (string, error) {
+	serialized, err := entry.Logger.Formatter.Format(entry)
+	if err != nil {
+		return "", err
+	}
+	str := string(serialized)
+	return str, nil
+}
+
+// Add an error as single field (using the key defined in ErrorKey) to the Entry.
+func (entry *Entry) WithError(err error) *Entry {
+	return entry.WithField(ErrorKey, err)
+}
+
+// Add a single field to the Entry.
+func (entry *Entry) WithField(key string, value interface{}) *Entry {
+	return entry.WithFields(Fields{key: value})
+}
+
+// Add a map of fields to the Entry.
+func (entry *Entry) WithFields(fields Fields) *Entry {
+	data := make(Fields, len(entry.Data)+len(fields))
+	for k, v := range entry.Data {
+		data[k] = v
+	}
+	var field_err string
+	for k, v := range fields {
+		if t := reflect.TypeOf(v); t != nil && t.Kind() == reflect.Func {
+			field_err = fmt.Sprintf("can not add field %q", k)
+			if entry.err != "" {
+				field_err = entry.err + ", " + field_err
+			}
+		} else {
+			data[k] = v
+		}
+	}
+	return &Entry{Logger: entry.Logger, Data: data, Time: entry.Time, err: field_err}
+}
+
+// Overrides the time of the Entry.
+func (entry *Entry) WithTime(t time.Time) *Entry {
+	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t}
+}
+
+// getPackageName reduces a fully qualified function name to the package name
+// There really ought to be to be a better way...
+func getPackageName(f string) string {
+	for {
+		lastPeriod := strings.LastIndex(f, ".")
+		lastSlash := strings.LastIndex(f, "/")
+		if lastPeriod > lastSlash {
+			f = f[:lastPeriod]
+		} else {
+			break
+		}
+	}
+
+	return f
+}
+
+// getCaller retrieves the name of the first non-logrus calling function
+func getCaller() *runtime.Frame {
+	// Restrict the lookback frames to avoid runaway lookups
+	pcs := make([]uintptr, maximumCallerDepth)
+	depth := runtime.Callers(minimumCallerDepth, pcs)
+	frames := runtime.CallersFrames(pcs[:depth])
+
+	// cache this package's fully-qualified name
+	callerInitOnce.Do(func() {
+		logrusPackage = getPackageName(runtime.FuncForPC(pcs[0]).Name())
+
+		// now that we have the cache, we can skip a minimum count of known-logrus functions
+		// XXX this is dubious, the number of frames may vary store an entry in a logger interface
+		minimumCallerDepth = knownLogrusFrames
+	})
+
+	for f, again := frames.Next(); again; f, again = frames.Next() {
+		pkg := getPackageName(f.Function)
+
+		// If the caller isn't part of this package, we're done
+		if pkg != logrusPackage {
+			return &f
+		}
+	}
+
+	// if we got here, we failed to find the caller's context
+	return nil
+}
+
+func (entry Entry) HasCaller() (has bool) {
+	return entry.Logger != nil &&
+		entry.Logger.ReportCaller &&
+		entry.Caller != nil
+}
+
+// This function is not declared with a pointer value because otherwise
+// race conditions will occur when using multiple goroutines
+func (entry Entry) log(level Level, msg string) {
+	var buffer *bytes.Buffer
+
+	// Default to now, but allow users to override if they want.
+	//
+	// We don't have to worry about polluting future calls to Entry#log()
+	// with this assignment because this function is declared with a
+	// non-pointer receiver.
+	if entry.Time.IsZero() {
+		entry.Time = time.Now()
+	}
+
+	entry.Level = level
+	entry.Message = msg
+	if entry.Logger.ReportCaller {
+		entry.Caller = getCaller()
+	}
+
+	entry.fireHooks()
+
+	buffer = bufferPool.Get().(*bytes.Buffer)
+	buffer.Reset()
+	defer bufferPool.Put(buffer)
+	entry.Buffer = buffer
+
+	entry.write()
+
+	entry.Buffer = nil
+
+	// To avoid Entry#log() returning a value that only would make sense for
+	// panic() to use in Entry#Panic(), we avoid the allocation by checking
+	// directly here.
+	if level <= PanicLevel {
+		panic(&entry)
+	}
+}
+
+func (entry *Entry) fireHooks() {
+	entry.Logger.mu.Lock()
+	defer entry.Logger.mu.Unlock()
+	err := entry.Logger.Hooks.Fire(entry.Level, entry)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
+	}
+}
+
+func (entry *Entry) write() {
+	entry.Logger.mu.Lock()
+	defer entry.Logger.mu.Unlock()
+	serialized, err := entry.Logger.Formatter.Format(entry)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
+	} else {
+		_, err = entry.Logger.Out.Write(serialized)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
+		}
+	}
+}
+
+func (entry *Entry) Trace(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.log(TraceLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Debug(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(DebugLevel) {
+		entry.log(DebugLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Print(args ...interface{}) {
+	entry.Info(args...)
+}
+
+func (entry *Entry) Info(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(InfoLevel) {
+		entry.log(InfoLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Warn(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(WarnLevel) {
+		entry.log(WarnLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Warning(args ...interface{}) {
+	entry.Warn(args...)
+}
+
+func (entry *Entry) Error(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(ErrorLevel) {
+		entry.log(ErrorLevel, fmt.Sprint(args...))
+	}
+}
+
+func (entry *Entry) Fatal(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(FatalLevel) {
+		entry.log(FatalLevel, fmt.Sprint(args...))
+	}
+	entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panic(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(PanicLevel) {
+		entry.log(PanicLevel, fmt.Sprint(args...))
+	}
+	panic(fmt.Sprint(args...))
+}
+
+// Entry Printf family functions
+
+func (entry *Entry) Tracef(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.Trace(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Debugf(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(DebugLevel) {
+		entry.Debug(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Infof(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(InfoLevel) {
+		entry.Info(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Printf(format string, args ...interface{}) {
+	entry.Infof(format, args...)
+}
+
+func (entry *Entry) Warnf(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(WarnLevel) {
+		entry.Warn(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Warningf(format string, args ...interface{}) {
+	entry.Warnf(format, args...)
+}
+
+func (entry *Entry) Errorf(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(ErrorLevel) {
+		entry.Error(fmt.Sprintf(format, args...))
+	}
+}
+
+func (entry *Entry) Fatalf(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(FatalLevel) {
+		entry.Fatal(fmt.Sprintf(format, args...))
+	}
+	entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panicf(format string, args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(PanicLevel) {
+		entry.Panic(fmt.Sprintf(format, args...))
+	}
+}
+
+// Entry Println family functions
+
+func (entry *Entry) Traceln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(TraceLevel) {
+		entry.Trace(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Debugln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(DebugLevel) {
+		entry.Debug(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Infoln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(InfoLevel) {
+		entry.Info(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Println(args ...interface{}) {
+	entry.Infoln(args...)
+}
+
+func (entry *Entry) Warnln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(WarnLevel) {
+		entry.Warn(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Warningln(args ...interface{}) {
+	entry.Warnln(args...)
+}
+
+func (entry *Entry) Errorln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(ErrorLevel) {
+		entry.Error(entry.sprintlnn(args...))
+	}
+}
+
+func (entry *Entry) Fatalln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(FatalLevel) {
+		entry.Fatal(entry.sprintlnn(args...))
+	}
+	entry.Logger.Exit(1)
+}
+
+func (entry *Entry) Panicln(args ...interface{}) {
+	if entry.Logger.IsLevelEnabled(PanicLevel) {
+		entry.Panic(entry.sprintlnn(args...))
+	}
+}
+
+// Sprintlnn => Sprint no newline. This is to get the behavior of how
+// fmt.Sprintln where spaces are always added between operands, regardless of
+// their type. Instead of vendoring the Sprintln implementation to spare a
+// string allocation, we do the simplest thing.
+func (entry *Entry) sprintlnn(args ...interface{}) string {
+	msg := fmt.Sprintln(args...)
+	return msg[:len(msg)-1]
+}

vendor/github.com/sirupsen/logrus/entry_test.go

@@ -0,0 +1,115 @@
+package logrus
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEntryWithError(t *testing.T) {
+
+	assert := assert.New(t)
+
+	defer func() {
+		ErrorKey = "error"
+	}()
+
+	err := fmt.Errorf("kaboom at layer %d", 4711)
+
+	assert.Equal(err, WithError(err).Data["error"])
+
+	logger := New()
+	logger.Out = &bytes.Buffer{}
+	entry := NewEntry(logger)
+
+	assert.Equal(err, entry.WithError(err).Data["error"])
+
+	ErrorKey = "err"
+
+	assert.Equal(err, entry.WithError(err).Data["err"])
+
+}
+
+func TestEntryPanicln(t *testing.T) {
+	errBoom := fmt.Errorf("boom time")
+
+	defer func() {
+		p := recover()
+		assert.NotNil(t, p)
+
+		switch pVal := p.(type) {
+		case *Entry:
+			assert.Equal(t, "kaboom", pVal.Message)
+			assert.Equal(t, errBoom, pVal.Data["err"])
+		default:
+			t.Fatalf("want type *Entry, got %T: %#v", pVal, pVal)
+		}
+	}()
+
+	logger := New()
+	logger.Out = &bytes.Buffer{}
+	entry := NewEntry(logger)
+	entry.WithField("err", errBoom).Panicln("kaboom")
+}
+
+func TestEntryPanicf(t *testing.T) {
+	errBoom := fmt.Errorf("boom again")
+
+	defer func() {
+		p := recover()
+		assert.NotNil(t, p)
+
+		switch pVal := p.(type) {
+		case *Entry:
+			assert.Equal(t, "kaboom true", pVal.Message)
+			assert.Equal(t, errBoom, pVal.Data["err"])
+		default:
+			t.Fatalf("want type *Entry, got %T: %#v", pVal, pVal)
+		}
+	}()
+
+	logger := New()
+	logger.Out = &bytes.Buffer{}
+	entry := NewEntry(logger)
+	entry.WithField("err", errBoom).Panicf("kaboom %v", true)
+}
+
+const (
+	badMessage   = "this is going to panic"
+	panicMessage = "this is broken"
+)
+
+type panickyHook struct{}
+
+func (p *panickyHook) Levels() []Level {
+	return []Level{InfoLevel}
+}
+
+func (p *panickyHook) Fire(entry *Entry) error {
+	if entry.Message == badMessage {
+		panic(panicMessage)
+	}
+
+	return nil
+}
+
+func TestEntryHooksPanic(t *testing.T) {
+	logger := New()
+	logger.Out = &bytes.Buffer{}
+	logger.Level = InfoLevel
+	logger.Hooks.Add(&panickyHook{})
+
+	defer func() {
+		p := recover()
+		assert.NotNil(t, p)
+		assert.Equal(t, panicMessage, p)
+
+		entry := NewEntry(logger)
+		entry.Info("another message")
+	}()
+
+	entry := NewEntry(logger)
+	entry.Info(badMessage)
+}

vendor/github.com/sirupsen/logrus/example_basic_test.go

@@ -0,0 +1,77 @@
+package logrus_test
+
+import (
+	"os"
+
+	"github.com/sirupsen/logrus"
+)
+
+func Example_basic() {
+	var log = logrus.New()
+	log.Formatter = new(logrus.JSONFormatter)
+	log.Formatter = new(logrus.TextFormatter)                     //default
+	log.Formatter.(*logrus.TextFormatter).DisableColors = true    // remove colors
+	log.Formatter.(*logrus.TextFormatter).DisableTimestamp = true // remove timestamp from test output
+	log.Level = logrus.TraceLevel
+	log.Out = os.Stdout
+
+	// file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
+	// if err == nil {
+	// 	log.Out = file
+	// } else {
+	// 	log.Info("Failed to log to file, using default stderr")
+	// }
+
+	defer func() {
+		err := recover()
+		if err != nil {
+			entry := err.(*logrus.Entry)
+			log.WithFields(logrus.Fields{
+				"omg":         true,
+				"err_animal":  entry.Data["animal"],
+				"err_size":    entry.Data["size"],
+				"err_level":   entry.Level,
+				"err_message": entry.Message,
+				"number":      100,
+			}).Error("The ice breaks!") // or use Fatal() to force the process to exit with a nonzero code
+		}
+	}()
+
+	log.WithFields(logrus.Fields{
+		"animal": "walrus",
+		"number": 0,
+	}).Trace("Went to the beach")
+
+	log.WithFields(logrus.Fields{
+		"animal": "walrus",
+		"number": 8,
+	}).Debug("Started observing beach")
+
+	log.WithFields(logrus.Fields{
+		"animal": "walrus",
+		"size":   10,
+	}).Info("A group of walrus emerges from the ocean")
+
+	log.WithFields(logrus.Fields{
+		"omg":    true,
+		"number": 122,
+	}).Warn("The group's number increased tremendously!")
+
+	log.WithFields(logrus.Fields{
+		"temperature": -4,
+	}).Debug("Temperature changes")
+
+	log.WithFields(logrus.Fields{
+		"animal": "orca",
+		"size":   9009,
+	}).Panic("It's over 9000!")
+
+	// Output:
+	// level=trace msg="Went to the beach" animal=walrus number=0
+	// level=debug msg="Started observing beach" animal=walrus number=8
+	// level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
+	// level=warning msg="The group's number increased tremendously!" number=122 omg=true
+	// level=debug msg="Temperature changes" temperature=-4
+	// level=panic msg="It's over 9000!" animal=orca size=9009
+	// level=error msg="The ice breaks!" err_animal=orca err_level=panic err_message="It's over 9000!" err_size=9009 number=100 omg=true
+}

vendor/github.com/sirupsen/logrus/example_global_hook_test.go

@@ -0,0 +1,36 @@
+package logrus_test
+
+import (
+	"github.com/sirupsen/logrus"
+	"os"
+)
+
+var (
+	mystring string
+)
+
+type GlobalHook struct {
+}
+
+func (h *GlobalHook) Levels() []logrus.Level {
+	return logrus.AllLevels
+}
+
+func (h *GlobalHook) Fire(e *logrus.Entry) error {
+	e.Data["mystring"] = mystring
+	return nil
+}
+
+func Example() {
+	l := logrus.New()
+	l.Out = os.Stdout
+	l.Formatter = &logrus.TextFormatter{DisableTimestamp: true, DisableColors: true}
+	l.AddHook(&GlobalHook{})
+	mystring = "first value"
+	l.Info("first log")
+	mystring = "another value"
+	l.Info("second log")
+	// Output:
+	// level=info msg="first log" mystring="first value"
+	// level=info msg="second log" mystring="another value"
+}

vendor/github.com/sirupsen/logrus/example_hook_test.go

@@ -0,0 +1,43 @@
+// +build !windows
+
+package logrus_test
+
+import (
+	"log/syslog"
+	"os"
+
+	"github.com/sirupsen/logrus"
+	slhooks "github.com/sirupsen/logrus/hooks/syslog"
+)
+
+// An example on how to use a hook
+func Example_hook() {
+	var log = logrus.New()
+	log.Formatter = new(logrus.TextFormatter)                     // default
+	log.Formatter.(*logrus.TextFormatter).DisableColors = true    // remove colors
+	log.Formatter.(*logrus.TextFormatter).DisableTimestamp = true // remove timestamp from test output
+	if sl, err := slhooks.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, ""); err != nil {
+		log.Hooks.Add(sl)
+	}
+	log.Out = os.Stdout
+
+	log.WithFields(logrus.Fields{
+		"animal": "walrus",
+		"size":   10,
+	}).Info("A group of walrus emerges from the ocean")
+
+	log.WithFields(logrus.Fields{
+		"omg":    true,
+		"number": 122,
+	}).Warn("The group's number increased tremendously!")
+
+	log.WithFields(logrus.Fields{
+		"omg":    true,
+		"number": 100,
+	}).Error("The ice breaks!")
+
+	// Output:
+	// level=info msg="A group of walrus emerges from the ocean" animal=walrus size=10
+	// level=warning msg="The group's number increased tremendously!" number=122 omg=true
+	// level=error msg="The ice breaks!" number=100 omg=true
+}

vendor/github.com/sirupsen/logrus/exported.go

@@ -0,0 +1,219 @@
+package logrus
+
+import (
+	"io"
+	"time"
+)
+
+var (
+	// std is the name of the standard logger in stdlib `log`
+	std = New()
+)
+
+func StandardLogger() *Logger {
+	return std
+}
+
+// SetOutput sets the standard logger output.
+func SetOutput(out io.Writer) {
+	std.SetOutput(out)
+}
+
+// SetFormatter sets the standard logger formatter.
+func SetFormatter(formatter Formatter) {
+	std.SetFormatter(formatter)
+}
+
+// SetReportCaller sets whether the standard logger will include the calling
+// method as a field.
+func SetReportCaller(include bool) {
+	std.SetReportCaller(include)
+}
+
+// SetLevel sets the standard logger level.
+func SetLevel(level Level) {
+	std.SetLevel(level)
+}
+
+// GetLevel returns the standard logger level.
+func GetLevel() Level {
+	return std.GetLevel()
+}
+
+// IsLevelEnabled checks if the log level of the standard logger is greater than the level param
+func IsLevelEnabled(level Level) bool {
+	return std.IsLevelEnabled(level)
+}
+
+// AddHook adds a hook to the standard logger hooks.
+func AddHook(hook Hook) {
+	std.AddHook(hook)
+}
+
+// WithError creates an entry from the standard logger and adds an error to it, using the value defined in ErrorKey as key.
+func WithError(err error) *Entry {
+	return std.WithField(ErrorKey, err)
+}
+
+// WithField creates an entry from the standard logger and adds a field to
+// it. If you want multiple fields, use `WithFields`.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithField(key string, value interface{}) *Entry {
+	return std.WithField(key, value)
+}
+
+// WithFields creates an entry from the standard logger and adds multiple
+// fields to it. This is simply a helper for `WithField`, invoking it
+// once for each field.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithFields(fields Fields) *Entry {
+	return std.WithFields(fields)
+}
+
+// WithTime creats an entry from the standard logger and overrides the time of
+// logs generated with it.
+//
+// Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal
+// or Panic on the Entry it returns.
+func WithTime(t time.Time) *Entry {
+	return std.WithTime(t)
+}
+
+// Trace logs a message at level Trace on the standard logger.
+func Trace(args ...interface{}) {
+	std.Trace(args...)
+}
+
+// Debug logs a message at level Debug on the standard logger.
+func Debug(args ...interface{}) {
+	std.Debug(args...)
+}
+
+// Print logs a message at level Info on the standard logger.
+func Print(args ...interface{}) {
+	std.Print(args...)
+}
+
+// Info logs a message at level Info on the standard logger.
+func Info(args ...interface{}) {
+	std.Info(args...)
+}
+
+// Warn logs a message at level Warn on the standard logger.
+func Warn(args ...interface{}) {
+	std.Warn(args...)
+}
+
+// Warning logs a message at level Warn on the standard logger.
+func Warning(args ...interface{}) {
+	std.Warning(args...)
+}
+
+// Error logs a message at level Error on the standard logger.
+func Error(args ...interface{}) {
+	std.Error(args...)
+}
+
+// Panic logs a message at level Panic on the standard logger.
+func Panic(args ...interface{}) {
+	std.Panic(args...)
+}
+
+// Fatal logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
+func Fatal(args ...interface{}) {
+	std.Fatal(args...)
+}
+
+// Tracef logs a message at level Trace on the standard logger.
+func Tracef(format string, args ...interface{}) {
+	std.Tracef(format, args...)
+}
+
+// Debugf logs a message at level Debug on the standard logger.
+func Debugf(format string, args ...interface{}) {
+	std.Debugf(format, args...)
+}
+
+// Printf logs a message at level Info on the standard logger.
+func Printf(format string, args ...interface{}) {
+	std.Printf(format, args...)
+}
+
+// Infof logs a message at level Info on the standard logger.
+func Infof(format string, args ...interface{}) {
+	std.Infof(format, args...)
+}
+
+// Warnf logs a message at level Warn on the standard logger.
+func Warnf(format string, args ...interface{}) {
+	std.Warnf(format, args...)
+}
+
+// Warningf logs a message at level Warn on the standard logger.
+func Warningf(format string, args ...interface{}) {
+	std.Warningf(format, args...)
+}
+
+// Errorf logs a message at level Error on the standard logger.
+func Errorf(format string, args ...interface{}) {
+	std.Errorf(format, args...)
+}
+
+// Panicf logs a message at level Panic on the standard logger.
+func Panicf(format string, args ...interface{}) {
+	std.Panicf(format, args...)
+}
+
+// Fatalf logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
+func Fatalf(format string, args ...interface{}) {
+	std.Fatalf(format, args...)
+}
+
+// Traceln logs a message at level Trace on the standard logger.
+func Traceln(args ...interface{}) {
+	std.Traceln(args...)
+}
+
+// Debugln logs a message at level Debug on the standard logger.
+func Debugln(args ...interface{}) {
+	std.Debugln(args...)
+}
+
+// Println logs a message at level Info on the standard logger.
+func Println(args ...interface{}) {
+	std.Println(args...)
+}
+
+// Infoln logs a message at level Info on the standard logger.
+func Infoln(args ...interface{}) {
+	std.Infoln(args...)
+}
+
+// Warnln logs a message at level Warn on the standard logger.
+func Warnln(args ...interface{}) {
+	std.Warnln(args...)
+}
+
+// Warningln logs a message at level Warn on the standard logger.
+func Warningln(args ...interface{}) {
+	std.Warningln(args...)
+}
+
+// Errorln logs a message at level Error on the standard logger.
+func Errorln(args ...interface{}) {
+	std.Errorln(args...)
+}
+
+// Panicln logs a message at level Panic on the standard logger.
+func Panicln(args ...interface{}) {
+	std.Panicln(args...)
+}
+
+// Fatalln logs a message at level Fatal on the standard logger then the process will exit with status set to 1.
+func Fatalln(args ...interface{}) {
+	std.Fatalln(args...)
+}

vendor/github.com/sirupsen/logrus/formatter.go

@@ -0,0 +1,78 @@
+package logrus
+
+import "time"
+
+// Default key names for the default fields
+const (
+	defaultTimestampFormat = time.RFC3339
+	FieldKeyMsg            = "msg"
+	FieldKeyLevel          = "level"
+	FieldKeyTime           = "time"
+	FieldKeyLogrusError    = "logrus_error"
+	FieldKeyFunc           = "func"
+	FieldKeyFile           = "file"
+)
+
+// The Formatter interface is used to implement a custom Formatter. It takes an
+// `Entry`. It exposes all the fields, including the default ones:
+//
+// * `entry.Data["msg"]`. The message passed from Info, Warn, Error ..
+// * `entry.Data["time"]`. The timestamp.
+// * `entry.Data["level"]. The level the entry was logged at.
+//
+// Any additional fields added with `WithField` or `WithFields` are also in
+// `entry.Data`. Format is expected to return an array of bytes which are then
+// logged to `logger.Out`.
+type Formatter interface {
+	Format(*Entry) ([]byte, error)
+}
+
+// This is to not silently overwrite `time`, `msg`, `func` and `level` fields when
+// dumping it. If this code wasn't there doing:
+//
+//  logrus.WithField("level", 1).Info("hello")
+//
+// Would just silently drop the user provided level. Instead with this code
+// it'll logged as:
+//
+//  {"level": "info", "fields.level": 1, "msg": "hello", "time": "..."}
+//
+// It's not exported because it's still using Data in an opinionated way. It's to
+// avoid code duplication between the two default formatters.
+func prefixFieldClashes(data Fields, fieldMap FieldMap, reportCaller bool) {
+	timeKey := fieldMap.resolve(FieldKeyTime)
+	if t, ok := data[timeKey]; ok {
+		data["fields."+timeKey] = t
+		delete(data, timeKey)
+	}
+
+	msgKey := fieldMap.resolve(FieldKeyMsg)
+	if m, ok := data[msgKey]; ok {
+		data["fields."+msgKey] = m
+		delete(data, msgKey)
+	}
+
+	levelKey := fieldMap.resolve(FieldKeyLevel)
+	if l, ok := data[levelKey]; ok {
+		data["fields."+levelKey] = l
+		delete(data, levelKey)
+	}
+
+	logrusErrKey := fieldMap.resolve(FieldKeyLogrusError)
+	if l, ok := data[logrusErrKey]; ok {
+		data["fields."+logrusErrKey] = l
+		delete(data, logrusErrKey)
+	}
+
+	// If reportCaller is not set, 'func' will not conflict.
+	if reportCaller {
+		funcKey := fieldMap.resolve(FieldKeyFunc)
+		if l, ok := data[funcKey]; ok {
+			data["fields."+funcKey] = l
+		}
+		fileKey := fieldMap.resolve(FieldKeyFile)
+		if l, ok := data[fileKey]; ok {
+			data["fields."+fileKey] = l
+		}
+	}
+}

vendor/github.com/sirupsen/logrus/formatter_bench_test.go

@@ -0,0 +1,101 @@
+package logrus
+
+import (
+	"fmt"
+	"testing"
+	"time"
+)
+
+// smallFields is a small size data set for benchmarking
+var smallFields = Fields{
+	"foo":   "bar",
+	"baz":   "qux",
+	"one":   "two",
+	"three": "four",
+}
+
+// largeFields is a large size data set for benchmarking
+var largeFields = Fields{
+	"foo":       "bar",
+	"baz":       "qux",
+	"one":       "two",
+	"three":     "four",
+	"five":      "six",
+	"seven":     "eight",
+	"nine":      "ten",
+	"eleven":    "twelve",
+	"thirteen":  "fourteen",
+	"fifteen":   "sixteen",
+	"seventeen": "eighteen",
+	"nineteen":  "twenty",
+	"a":         "b",
+	"c":         "d",
+	"e":         "f",
+	"g":         "h",
+	"i":         "j",
+	"k":         "l",
+	"m":         "n",
+	"o":         "p",
+	"q":         "r",
+	"s":         "t",
+	"u":         "v",
+	"w":         "x",
+	"y":         "z",
+	"this":      "will",
+	"make":      "thirty",
+	"entries":   "yeah",
+}
+
+var errorFields = Fields{
+	"foo": fmt.Errorf("bar"),
+	"baz": fmt.Errorf("qux"),
+}
+
+func BenchmarkErrorTextFormatter(b *testing.B) {
+	doBenchmark(b, &TextFormatter{DisableColors: true}, errorFields)
+}
+
+func BenchmarkSmallTextFormatter(b *testing.B) {
+	doBenchmark(b, &TextFormatter{DisableColors: true}, smallFields)
+}
+
+func BenchmarkLargeTextFormatter(b *testing.B) {
+	doBenchmark(b, &TextFormatter{DisableColors: true}, largeFields)
+}
+
+func BenchmarkSmallColoredTextFormatter(b *testing.B) {
+	doBenchmark(b, &TextFormatter{ForceColors: true}, smallFields)
+}
+
+func BenchmarkLargeColoredTextFormatter(b *testing.B) {
+	doBenchmark(b, &TextFormatter{ForceColors: true}, largeFields)
+}
+
+func BenchmarkSmallJSONFormatter(b *testing.B) {
+	doBenchmark(b, &JSONFormatter{}, smallFields)
+}
+
+func BenchmarkLargeJSONFormatter(b *testing.B) {
+	doBenchmark(b, &JSONFormatter{}, largeFields)
+}
+
+func doBenchmark(b *testing.B, formatter Formatter, fields Fields) {
+	logger := New()
+
+	entry := &Entry{
+		Time:    time.Time{},
+		Level:   InfoLevel,
+		Message: "message",
+		Data:    fields,
+		Logger:  logger,
+	}
+	var d []byte
+	var err error
+	for i := 0; i < b.N; i++ {
+		d, err = formatter.Format(entry)
+		if err != nil {
+			b.Fatal(err)
+		}
+		b.SetBytes(int64(len(d)))
+	}
+}

vendor/github.com/sirupsen/logrus/go.mod

@@ -0,0 +1,11 @@
+module github.com/sirupsen/logrus
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.1
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/objx v0.1.1 // indirect
+	github.com/stretchr/testify v1.2.2
+	golang.org/x/crypto v0.0.0-20180904163835-0709b304e793
+	golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33
+)

vendor/github.com/sirupsen/logrus/go.sum

@@ -0,0 +1,15 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe h1:CHRGQ8V7OlCYtwaKPJi3iA7J+YdNKdo8j7nG5IgDhjs=
+github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/crypto v0.0.0-20180904163835-0709b304e793 h1:u+LnwYTOOW7Ukr/fppxEb1Nwz0AtPflrblfvUudpo+I=
+golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33 h1:I6FyU15t786LL7oL/hn43zqTuEGr4PN7F4XJ1p4E3Y8=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

vendor/github.com/sirupsen/logrus/hook_test.go

@@ -0,0 +1,192 @@
+package logrus_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"sync"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	. "github.com/sirupsen/logrus"
+	. "github.com/sirupsen/logrus/internal/testutils"
+)
+
+type TestHook struct {
+	Fired bool
+}
+
+func (hook *TestHook) Fire(entry *Entry) error {
+	hook.Fired = true
+	return nil
+}
+
+func (hook *TestHook) Levels() []Level {
+	return []Level{
+		TraceLevel,
+		DebugLevel,
+		InfoLevel,
+		WarnLevel,
+		ErrorLevel,
+		FatalLevel,
+		PanicLevel,
+	}
+}
+
+func TestHookFires(t *testing.T) {
+	hook := new(TestHook)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Hooks.Add(hook)
+		assert.Equal(t, hook.Fired, false)
+
+		log.Print("test")
+	}, func(fields Fields) {
+		assert.Equal(t, hook.Fired, true)
+	})
+}
+
+type ModifyHook struct {
+}
+
+func (hook *ModifyHook) Fire(entry *Entry) error {
+	entry.Data["wow"] = "whale"
+	return nil
+}
+
+func (hook *ModifyHook) Levels() []Level {
+	return []Level{
+		TraceLevel,
+		DebugLevel,
+		InfoLevel,
+		WarnLevel,
+		ErrorLevel,
+		FatalLevel,
+		PanicLevel,
+	}
+}
+
+func TestHookCanModifyEntry(t *testing.T) {
+	hook := new(ModifyHook)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Hooks.Add(hook)
+		log.WithField("wow", "elephant").Print("test")
+	}, func(fields Fields) {
+		assert.Equal(t, fields["wow"], "whale")
+	})
+}
+
+func TestCanFireMultipleHooks(t *testing.T) {
+	hook1 := new(ModifyHook)
+	hook2 := new(TestHook)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Hooks.Add(hook1)
+		log.Hooks.Add(hook2)
+
+		log.WithField("wow", "elephant").Print("test")
+	}, func(fields Fields) {
+		assert.Equal(t, fields["wow"], "whale")
+		assert.Equal(t, hook2.Fired, true)
+	})
+}
+
+type SingleLevelModifyHook struct {
+	ModifyHook
+}
+
+func (h *SingleLevelModifyHook) Levels() []Level {
+	return []Level{InfoLevel}
+}
+
+func TestHookEntryIsPristine(t *testing.T) {
+	l := New()
+	b := &bytes.Buffer{}
+	l.Formatter = &JSONFormatter{}
+	l.Out = b
+	l.AddHook(&SingleLevelModifyHook{})
+
+	l.Error("error message")
+	data := map[string]string{}
+	err := json.Unmarshal(b.Bytes(), &data)
+	require.NoError(t, err)
+	_, ok := data["wow"]
+	require.False(t, ok)
+	b.Reset()
+
+	l.Info("error message")
+	data = map[string]string{}
+	err = json.Unmarshal(b.Bytes(), &data)
+	require.NoError(t, err)
+	_, ok = data["wow"]
+	require.True(t, ok)
+	b.Reset()
+
+	l.Error("error message")
+	data = map[string]string{}
+	err = json.Unmarshal(b.Bytes(), &data)
+	require.NoError(t, err)
+	_, ok = data["wow"]
+	require.False(t, ok)
+	b.Reset()
+}
+
+type ErrorHook struct {
+	Fired bool
+}
+
+func (hook *ErrorHook) Fire(entry *Entry) error {
+	hook.Fired = true
+	return nil
+}
+
+func (hook *ErrorHook) Levels() []Level {
+	return []Level{
+		ErrorLevel,
+	}
+}
+
+func TestErrorHookShouldntFireOnInfo(t *testing.T) {
+	hook := new(ErrorHook)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Hooks.Add(hook)
+		log.Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, hook.Fired, false)
+	})
+}
+
+func TestErrorHookShouldFireOnError(t *testing.T) {
+	hook := new(ErrorHook)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Hooks.Add(hook)
+		log.Error("test")
+	}, func(fields Fields) {
+		assert.Equal(t, hook.Fired, true)
+	})
+}
+
+func TestAddHookRace(t *testing.T) {
+	var wg sync.WaitGroup
+	wg.Add(2)
+	hook := new(ErrorHook)
+	LogAndAssertJSON(t, func(log *Logger) {
+		go func() {
+			defer wg.Done()
+			log.AddHook(hook)
+		}()
+		go func() {
+			defer wg.Done()
+			log.Error("test")
+		}()
+		wg.Wait()
+	}, func(fields Fields) {
+		// the line may have been logged
+		// before the hook was added, so we can't
+		// actually assert on the hook
+	})
+}

vendor/github.com/sirupsen/logrus/hooks.go

@@ -0,0 +1,34 @@
+package logrus
+
+// A hook to be fired when logging on the logging levels returned from
+// `Levels()` on your implementation of the interface. Note that this is not
+// fired in a goroutine or a channel with workers, you should handle such
+// functionality yourself if your call is non-blocking and you don't wish for
+// the logging calls for levels returned from `Levels()` to block.
+type Hook interface {
+	Levels() []Level
+	Fire(*Entry) error
+}
+
+// Internal type for storing the hooks on a logger instance.
+type LevelHooks map[Level][]Hook
+
+// Add a hook to an instance of logger. This is called with
+// `log.Hooks.Add(new(MyHook))` where `MyHook` implements the `Hook` interface.
+func (hooks LevelHooks) Add(hook Hook) {
+	for _, level := range hook.Levels() {
+		hooks[level] = append(hooks[level], hook)
+	}
+}
+
+// Fire all the hooks for the passed level. Used by `entry.log` to fire
+// appropriate hooks for a log entry.
+func (hooks LevelHooks) Fire(level Level, entry *Entry) error {
+	for _, hook := range hooks[level] {
+		if err := hook.Fire(entry); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

vendor/github.com/sirupsen/logrus/hooks/syslog/README.md

@@ -0,0 +1,39 @@
+# Syslog Hooks for Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>
+
+## Usage
+
+```go
+import (
+  "log/syslog"
+  "github.com/sirupsen/logrus"
+  lSyslog "github.com/sirupsen/logrus/hooks/syslog"
+)
+
+func main() {
+  log       := logrus.New()
+  hook, err := lSyslog.NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
+
+  if err == nil {
+    log.Hooks.Add(hook)
+  }
+}
+```
+
+If you want to connect to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). Just assign empty string to the first two parameters of `NewSyslogHook`. It should look like the following.
+
+```go
+import (
+  "log/syslog"
+  "github.com/sirupsen/logrus"
+  lSyslog "github.com/sirupsen/logrus/hooks/syslog"
+)
+
+func main() {
+  log       := logrus.New()
+  hook, err := lSyslog.NewSyslogHook("", "", syslog.LOG_INFO, "")
+
+  if err == nil {
+    log.Hooks.Add(hook)
+  }
+}
+```

vendor/github.com/sirupsen/logrus/hooks/syslog/syslog.go

@@ -0,0 +1,55 @@
+// +build !windows,!nacl,!plan9
+
+package syslog
+
+import (
+	"fmt"
+	"log/syslog"
+	"os"
+
+	"github.com/sirupsen/logrus"
+)
+
+// SyslogHook to send logs via syslog.
+type SyslogHook struct {
+	Writer        *syslog.Writer
+	SyslogNetwork string
+	SyslogRaddr   string
+}
+
+// Creates a hook to be added to an instance of logger. This is called with
+// `hook, err := NewSyslogHook("udp", "localhost:514", syslog.LOG_DEBUG, "")`
+// `if err == nil { log.Hooks.Add(hook) }`
+func NewSyslogHook(network, raddr string, priority syslog.Priority, tag string) (*SyslogHook, error) {
+	w, err := syslog.Dial(network, raddr, priority, tag)
+	return &SyslogHook{w, network, raddr}, err
+}
+
+func (hook *SyslogHook) Fire(entry *logrus.Entry) error {
+	line, err := entry.String()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Unable to read entry, %v", err)
+		return err
+	}
+
+	switch entry.Level {
+	case logrus.PanicLevel:
+		return hook.Writer.Crit(line)
+	case logrus.FatalLevel:
+		return hook.Writer.Crit(line)
+	case logrus.ErrorLevel:
+		return hook.Writer.Err(line)
+	case logrus.WarnLevel:
+		return hook.Writer.Warning(line)
+	case logrus.InfoLevel:
+		return hook.Writer.Info(line)
+	case logrus.DebugLevel, logrus.TraceLevel:
+		return hook.Writer.Debug(line)
+	default:
+		return nil
+	}
+}
+
+func (hook *SyslogHook) Levels() []logrus.Level {
+	return logrus.AllLevels
+}

vendor/github.com/sirupsen/logrus/hooks/syslog/syslog_test.go

@@ -0,0 +1,29 @@
+// +build !windows,!nacl,!plan9
+
+package syslog
+
+import (
+	"log/syslog"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+)
+
+func TestLocalhostAddAndPrint(t *testing.T) {
+	log := logrus.New()
+	hook, err := NewSyslogHook("udp", "localhost:514", syslog.LOG_INFO, "")
+
+	if err != nil {
+		t.Errorf("Unable to connect to local syslog.")
+	}
+
+	log.Hooks.Add(hook)
+
+	for _, level := range hook.Levels() {
+		if len(log.Hooks[level]) != 1 {
+			t.Errorf("SyslogHook was not added. The length of log.Hooks[%v]: %v", level, len(log.Hooks[level]))
+		}
+	}
+
+	log.Info("Congratulations!")
+}

vendor/github.com/sirupsen/logrus/hooks/test/test.go

@@ -0,0 +1,92 @@
+// The Test package is used for testing logrus. It is here for backwards
+// compatibility from when logrus' organization was upper-case. Please use
+// lower-case logrus and the `null` package instead of this one.
+package test
+
+import (
+	"io/ioutil"
+	"sync"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Hook is a hook designed for dealing with logs in test scenarios.
+type Hook struct {
+	// Entries is an array of all entries that have been received by this hook.
+	// For safe access, use the AllEntries() method, rather than reading this
+	// value directly.
+	Entries []logrus.Entry
+	mu      sync.RWMutex
+}
+
+// NewGlobal installs a test hook for the global logger.
+func NewGlobal() *Hook {
+
+	hook := new(Hook)
+	logrus.AddHook(hook)
+
+	return hook
+
+}
+
+// NewLocal installs a test hook for a given local logger.
+func NewLocal(logger *logrus.Logger) *Hook {
+
+	hook := new(Hook)
+	logger.Hooks.Add(hook)
+
+	return hook
+
+}
+
+// NewNullLogger creates a discarding logger and installs the test hook.
+func NewNullLogger() (*logrus.Logger, *Hook) {
+
+	logger := logrus.New()
+	logger.Out = ioutil.Discard
+
+	return logger, NewLocal(logger)
+
+}
+
+func (t *Hook) Fire(e *logrus.Entry) error {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	t.Entries = append(t.Entries, *e)
+	return nil
+}
+
+func (t *Hook) Levels() []logrus.Level {
+	return logrus.AllLevels
+}
+
+// LastEntry returns the last entry that was logged or nil.
+func (t *Hook) LastEntry() *logrus.Entry {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	i := len(t.Entries) - 1
+	if i < 0 {
+		return nil
+	}
+	return &t.Entries[i]
+}
+
+// AllEntries returns all entries that were logged.
+func (t *Hook) AllEntries() []*logrus.Entry {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	// Make a copy so the returned value won't race with future log requests
+	entries := make([]*logrus.Entry, len(t.Entries))
+	for i := 0; i < len(t.Entries); i++ {
+		// Make a copy, for safety
+		entries[i] = &t.Entries[i]
+	}
+	return entries
+}
+
+// Reset removes all Entries from this test hook.
+func (t *Hook) Reset() {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	t.Entries = make([]logrus.Entry, 0)
+}

vendor/github.com/sirupsen/logrus/hooks/test/test_test.go

@@ -0,0 +1,85 @@
+package test
+
+import (
+	"math/rand"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAllHooks(t *testing.T) {
+	assert := assert.New(t)
+
+	logger, hook := NewNullLogger()
+	assert.Nil(hook.LastEntry())
+	assert.Equal(0, len(hook.Entries))
+
+	logger.Error("Hello error")
+	assert.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
+	assert.Equal("Hello error", hook.LastEntry().Message)
+	assert.Equal(1, len(hook.Entries))
+
+	logger.Warn("Hello warning")
+	assert.Equal(logrus.WarnLevel, hook.LastEntry().Level)
+	assert.Equal("Hello warning", hook.LastEntry().Message)
+	assert.Equal(2, len(hook.Entries))
+
+	hook.Reset()
+	assert.Nil(hook.LastEntry())
+	assert.Equal(0, len(hook.Entries))
+
+	hook = NewGlobal()
+
+	logrus.Error("Hello error")
+	assert.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
+	assert.Equal("Hello error", hook.LastEntry().Message)
+	assert.Equal(1, len(hook.Entries))
+}
+
+func TestLoggingWithHooksRace(t *testing.T) {
+
+	rand.Seed(time.Now().Unix())
+	unlocker := rand.Int() % 100
+
+	assert := assert.New(t)
+	logger, hook := NewNullLogger()
+
+	var wgOne, wgAll sync.WaitGroup
+	wgOne.Add(1)
+	wgAll.Add(100)
+
+	for i := 0; i < 100; i++ {
+		go func(i int) {
+			logger.Info("info")
+			wgAll.Done()
+			if i == unlocker {
+				wgOne.Done()
+			}
+		}(i)
+	}
+
+	wgOne.Wait()
+
+	assert.Equal(logrus.InfoLevel, hook.LastEntry().Level)
+	assert.Equal("info", hook.LastEntry().Message)
+
+	wgAll.Wait()
+
+	entries := hook.AllEntries()
+	assert.Equal(100, len(entries))
+}
+
+func TestFatalWithAlternateExit(t *testing.T) {
+	assert := assert.New(t)
+
+	logger, hook := NewNullLogger()
+	logger.ExitFunc = func(code int) {}
+
+	logger.Fatal("something went very wrong")
+	assert.Equal(logrus.FatalLevel, hook.LastEntry().Level)
+	assert.Equal("something went very wrong", hook.LastEntry().Message)
+	assert.Equal(1, len(hook.Entries))
+}

vendor/github.com/sirupsen/logrus/internal/testutils/testutils.go

@@ -0,0 +1,58 @@
+package testutils
+
+import (
+	"bytes"
+	"encoding/json"
+	"strconv"
+	"strings"
+	"testing"
+
+	. "github.com/sirupsen/logrus"
+
+	"github.com/stretchr/testify/require"
+)
+
+func LogAndAssertJSON(t *testing.T, log func(*Logger), assertions func(fields Fields)) {
+	var buffer bytes.Buffer
+	var fields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+
+	log(logger)
+
+	err := json.Unmarshal(buffer.Bytes(), &fields)
+	require.Nil(t, err)
+
+	assertions(fields)
+}
+
+func LogAndAssertText(t *testing.T, log func(*Logger), assertions func(fields map[string]string)) {
+	var buffer bytes.Buffer
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = &TextFormatter{
+		DisableColors: true,
+	}
+
+	log(logger)
+
+	fields := make(map[string]string)
+	for _, kv := range strings.Split(buffer.String(), " ") {
+		if !strings.Contains(kv, "=") {
+			continue
+		}
+		kvArr := strings.Split(kv, "=")
+		key := strings.TrimSpace(kvArr[0])
+		val := kvArr[1]
+		if kvArr[1][0] == '"' {
+			var err error
+			val, err = strconv.Unquote(val)
+			require.NoError(t, err)
+		}
+		fields[key] = val
+	}
+	assertions(fields)
+}

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -0,0 +1,105 @@
+package logrus
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+)
+
+type fieldKey string
+
+// FieldMap allows customization of the key names for default fields.
+type FieldMap map[fieldKey]string
+
+func (f FieldMap) resolve(key fieldKey) string {
+	if k, ok := f[key]; ok {
+		return k
+	}
+
+	return string(key)
+}
+
+// JSONFormatter formats logs into parsable json
+type JSONFormatter struct {
+	// TimestampFormat sets the format used for marshaling timestamps.
+	TimestampFormat string
+
+	// DisableTimestamp allows disabling automatic timestamps in output
+	DisableTimestamp bool
+
+	// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
+	DataKey string
+
+	// FieldMap allows users to customize the names of keys for default fields.
+	// As an example:
+	// formatter := &JSONFormatter{
+	//   	FieldMap: FieldMap{
+	// 		 FieldKeyTime:  "@timestamp",
+	// 		 FieldKeyLevel: "@level",
+	// 		 FieldKeyMsg:   "@message",
+	// 		 FieldKeyFunc:  "@caller",
+	//    },
+	// }
+	FieldMap FieldMap
+
+	// PrettyPrint will indent all json logs
+	PrettyPrint bool
+}
+
+// Format renders a single log entry
+func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
+	data := make(Fields, len(entry.Data)+4)
+	for k, v := range entry.Data {
+		switch v := v.(type) {
+		case error:
+			// Otherwise errors are ignored by `encoding/json`
+			// https://github.com/sirupsen/logrus/issues/137
+			data[k] = v.Error()
+		default:
+			data[k] = v
+		}
+	}
+
+	if f.DataKey != "" {
+		newData := make(Fields, 4)
+		newData[f.DataKey] = data
+		data = newData
+	}
+
+	prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
+
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = defaultTimestampFormat
+	}
+
+	if entry.err != "" {
+		data[f.FieldMap.resolve(FieldKeyLogrusError)] = entry.err
+	}
+	if !f.DisableTimestamp {
+		data[f.FieldMap.resolve(FieldKeyTime)] = entry.Time.Format(timestampFormat)
+	}
+	data[f.FieldMap.resolve(FieldKeyMsg)] = entry.Message
+	data[f.FieldMap.resolve(FieldKeyLevel)] = entry.Level.String()
+	if entry.HasCaller() {
+		data[f.FieldMap.resolve(FieldKeyFunc)] = entry.Caller.Function
+		data[f.FieldMap.resolve(FieldKeyFile)] = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+	}
+
+	var b *bytes.Buffer
+	if entry.Buffer != nil {
+		b = entry.Buffer
+	} else {
+		b = &bytes.Buffer{}
+	}
+
+	encoder := json.NewEncoder(b)
+	if f.PrettyPrint {
+		encoder.SetIndent("", "  ")
+	}
+	if err := encoder.Encode(data); err != nil {
+		return nil, fmt.Errorf("Failed to marshal fields to JSON, %v", err)
+	}
+
+	return b.Bytes(), nil
+}

vendor/github.com/sirupsen/logrus/json_formatter_test.go

@@ -0,0 +1,346 @@
+package logrus
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+func TestErrorNotLost(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("error", errors.New("wild walrus")))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["error"] != "wild walrus" {
+		t.Fatal("Error field not set")
+	}
+}
+
+func TestErrorNotLostOnFieldNotNamedError(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("omg", errors.New("wild walrus")))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["omg"] != "wild walrus" {
+		t.Fatal("Error field not set")
+	}
+}
+
+func TestFieldClashWithTime(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("time", "right now!"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["fields.time"] != "right now!" {
+		t.Fatal("fields.time not set to original time field")
+	}
+
+	if entry["time"] != "0001-01-01T00:00:00Z" {
+		t.Fatal("time field not set to current time, was: ", entry["time"])
+	}
+}
+
+func TestFieldClashWithMsg(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("msg", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["fields.msg"] != "something" {
+		t.Fatal("fields.msg not set to original msg field")
+	}
+}
+
+func TestFieldClashWithLevel(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["fields.level"] != "something" {
+		t.Fatal("fields.level not set to original level field")
+	}
+}
+
+func TestFieldClashWithRemappedFields(t *testing.T) {
+	formatter := &JSONFormatter{
+		FieldMap: FieldMap{
+			FieldKeyTime:  "@timestamp",
+			FieldKeyLevel: "@level",
+			FieldKeyMsg:   "@message",
+		},
+	}
+
+	b, err := formatter.Format(WithFields(Fields{
+		"@timestamp": "@timestamp",
+		"@level":     "@level",
+		"@message":   "@message",
+		"timestamp":  "timestamp",
+		"level":      "level",
+		"msg":        "msg",
+	}))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	for _, field := range []string{"timestamp", "level", "msg"} {
+		if entry[field] != field {
+			t.Errorf("Expected field %v to be untouched; got %v", field, entry[field])
+		}
+
+		remappedKey := fmt.Sprintf("fields.%s", field)
+		if remapped, ok := entry[remappedKey]; ok {
+			t.Errorf("Expected %s to be empty; got %v", remappedKey, remapped)
+		}
+	}
+
+	for _, field := range []string{"@timestamp", "@level", "@message"} {
+		if entry[field] == field {
+			t.Errorf("Expected field %v to be mapped to an Entry value", field)
+		}
+
+		remappedKey := fmt.Sprintf("fields.%s", field)
+		if remapped, ok := entry[remappedKey]; ok {
+			if remapped != field {
+				t.Errorf("Expected field %v to be copied to %s; got %v", field, remappedKey, remapped)
+			}
+		} else {
+			t.Errorf("Expected field %v to be copied to %s; was absent", field, remappedKey)
+		}
+	}
+}
+
+func TestFieldsInNestedDictionary(t *testing.T) {
+	formatter := &JSONFormatter{
+		DataKey: "args",
+	}
+
+	logEntry := WithFields(Fields{
+		"level": "level",
+		"test":  "test",
+	})
+	logEntry.Level = InfoLevel
+
+	b, err := formatter.Format(logEntry)
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	args := entry["args"].(map[string]interface{})
+
+	for _, field := range []string{"test", "level"} {
+		if value, present := args[field]; !present || value != field {
+			t.Errorf("Expected field %v to be present under 'args'; untouched", field)
+		}
+	}
+
+	for _, field := range []string{"test", "fields.level"} {
+		if _, present := entry[field]; present {
+			t.Errorf("Expected field %v not to be present at top level", field)
+		}
+	}
+
+	// with nested object, "level" shouldn't clash
+	if entry["level"] != "info" {
+		t.Errorf("Expected 'level' field to contain 'info'")
+	}
+}
+
+func TestJSONEntryEndsWithNewline(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	if b[len(b)-1] != '\n' {
+		t.Fatal("Expected JSON log entry to end with a newline")
+	}
+}
+
+func TestJSONMessageKey(t *testing.T) {
+	formatter := &JSONFormatter{
+		FieldMap: FieldMap{
+			FieldKeyMsg: "message",
+		},
+	}
+
+	b, err := formatter.Format(&Entry{Message: "oh hai"})
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+	s := string(b)
+	if !(strings.Contains(s, "message") && strings.Contains(s, "oh hai")) {
+		t.Fatal("Expected JSON to format message key")
+	}
+}
+
+func TestJSONLevelKey(t *testing.T) {
+	formatter := &JSONFormatter{
+		FieldMap: FieldMap{
+			FieldKeyLevel: "somelevel",
+		},
+	}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+	s := string(b)
+	if !strings.Contains(s, "somelevel") {
+		t.Fatal("Expected JSON to format level key")
+	}
+}
+
+func TestJSONTimeKey(t *testing.T) {
+	formatter := &JSONFormatter{
+		FieldMap: FieldMap{
+			FieldKeyTime: "timeywimey",
+		},
+	}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+	s := string(b)
+	if !strings.Contains(s, "timeywimey") {
+		t.Fatal("Expected JSON to format time key")
+	}
+}
+
+func TestFieldDoesNotClashWithCaller(t *testing.T) {
+	SetReportCaller(false)
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("func", "howdy pardner"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["func"] != "howdy pardner" {
+		t.Fatal("func field replaced when ReportCaller=false")
+	}
+}
+
+func TestFieldClashWithCaller(t *testing.T) {
+	SetReportCaller(true)
+	formatter := &JSONFormatter{}
+	e := WithField("func", "howdy pardner")
+	e.Caller = &runtime.Frame{Function: "somefunc"}
+	b, err := formatter.Format(e)
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	entry := make(map[string]interface{})
+	err = json.Unmarshal(b, &entry)
+	if err != nil {
+		t.Fatal("Unable to unmarshal formatted entry: ", err)
+	}
+
+	if entry["fields.func"] != "howdy pardner" {
+		t.Fatalf("fields.func not set to original func field when ReportCaller=true (got '%s')",
+			entry["fields.func"])
+	}
+
+	if entry["func"] != "somefunc" {
+		t.Fatalf("func not set as expected when ReportCaller=true (got '%s')",
+			entry["func"])
+	}
+
+	SetReportCaller(false) // return to default value
+}
+
+func TestJSONDisableTimestamp(t *testing.T) {
+	formatter := &JSONFormatter{
+		DisableTimestamp: true,
+	}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+	s := string(b)
+	if strings.Contains(s, FieldKeyTime) {
+		t.Error("Did not prevent timestamp", s)
+	}
+}
+
+func TestJSONEnableTimestamp(t *testing.T) {
+	formatter := &JSONFormatter{}
+
+	b, err := formatter.Format(WithField("level", "something"))
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+	s := string(b)
+	if !strings.Contains(s, FieldKeyTime) {
+		t.Error("Timestamp not present", s)
+	}
+}

vendor/github.com/sirupsen/logrus/logger.go

@@ -0,0 +1,415 @@
+package logrus
+
+import (
+	"io"
+	"os"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+type Logger struct {
+	// The logs are `io.Copy`'d to this in a mutex. It's common to set this to a
+	// file, or leave it default which is `os.Stderr`. You can also set this to
+	// something more adventurous, such as logging to Kafka.
+	Out io.Writer
+	// Hooks for the logger instance. These allow firing events based on logging
+	// levels and log entries. For example, to send errors to an error tracking
+	// service, log to StatsD or dump the core on fatal errors.
+	Hooks LevelHooks
+	// All log entries pass through the formatter before logged to Out. The
+	// included formatters are `TextFormatter` and `JSONFormatter` for which
+	// TextFormatter is the default. In development (when a TTY is attached) it
+	// logs with colors, but to a file it wouldn't. You can easily implement your
+	// own that implements the `Formatter` interface, see the `README` or included
+	// formatters for examples.
+	Formatter Formatter
+
+	// Flag for whether to log caller info (off by default)
+	ReportCaller bool
+
+	// The logging level the logger should log at. This is typically (and defaults
+	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
+	// logged.
+	Level Level
+	// Used to sync writing to the log. Locking is enabled by Default
+	mu MutexWrap
+	// Reusable empty entry
+	entryPool sync.Pool
+	// Function to exit the application, defaults to `os.Exit()`
+	ExitFunc exitFunc
+}
+
+type exitFunc func(int)
+
+type MutexWrap struct {
+	lock     sync.Mutex
+	disabled bool
+}
+
+func (mw *MutexWrap) Lock() {
+	if !mw.disabled {
+		mw.lock.Lock()
+	}
+}
+
+func (mw *MutexWrap) Unlock() {
+	if !mw.disabled {
+		mw.lock.Unlock()
+	}
+}
+
+func (mw *MutexWrap) Disable() {
+	mw.disabled = true
+}
+
+// Creates a new logger. Configuration should be set by changing `Formatter`,
+// `Out` and `Hooks` directly on the default logger instance. You can also just
+// instantiate your own:
+//
+//    var log = &Logger{
+//      Out: os.Stderr,
+//      Formatter: new(JSONFormatter),
+//      Hooks: make(LevelHooks),
+//      Level: logrus.DebugLevel,
+//    }
+//
+// It's recommended to make this a global instance called `log`.
+func New() *Logger {
+	return &Logger{
+		Out:          os.Stderr,
+		Formatter:    new(TextFormatter),
+		Hooks:        make(LevelHooks),
+		Level:        InfoLevel,
+		ExitFunc:     os.Exit,
+		ReportCaller: false,
+	}
+}
+
+func (logger *Logger) newEntry() *Entry {
+	entry, ok := logger.entryPool.Get().(*Entry)
+	if ok {
+		return entry
+	}
+	return NewEntry(logger)
+}
+
+func (logger *Logger) releaseEntry(entry *Entry) {
+	entry.Data = map[string]interface{}{}
+	logger.entryPool.Put(entry)
+}
+
+// Adds a field to the log entry, note that it doesn't log until you call
+// Debug, Print, Info, Warn, Error, Fatal or Panic. It only creates a log entry.
+// If you want multiple fields, use `WithFields`.
+func (logger *Logger) WithField(key string, value interface{}) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithField(key, value)
+}
+
+// Adds a struct of fields to the log entry. All it does is call `WithField` for
+// each `Field`.
+func (logger *Logger) WithFields(fields Fields) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithFields(fields)
+}
+
+// Add an error as single field to the log entry.  All it does is call
+// `WithError` for the given `error`.
+func (logger *Logger) WithError(err error) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithError(err)
+}
+
+// Overrides the time of the log entry.
+func (logger *Logger) WithTime(t time.Time) *Entry {
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithTime(t)
+}
+
+func (logger *Logger) Tracef(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(TraceLevel) {
+		entry := logger.newEntry()
+		entry.Tracef(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Debugf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(DebugLevel) {
+		entry := logger.newEntry()
+		entry.Debugf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Infof(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(InfoLevel) {
+		entry := logger.newEntry()
+		entry.Infof(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Printf(format string, args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Printf(format, args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warnf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warningf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Errorf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(ErrorLevel) {
+		entry := logger.newEntry()
+		entry.Errorf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatalf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(FatalLevel) {
+		entry := logger.newEntry()
+		entry.Fatalf(format, args...)
+		logger.releaseEntry(entry)
+	}
+	logger.Exit(1)
+}
+
+func (logger *Logger) Panicf(format string, args ...interface{}) {
+	if logger.IsLevelEnabled(PanicLevel) {
+		entry := logger.newEntry()
+		entry.Panicf(format, args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Trace(args ...interface{}) {
+	if logger.IsLevelEnabled(TraceLevel) {
+		entry := logger.newEntry()
+		entry.Trace(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Debug(args ...interface{}) {
+	if logger.IsLevelEnabled(DebugLevel) {
+		entry := logger.newEntry()
+		entry.Debug(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Info(args ...interface{}) {
+	if logger.IsLevelEnabled(InfoLevel) {
+		entry := logger.newEntry()
+		entry.Info(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Print(args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Info(args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warn(args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warning(args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Error(args ...interface{}) {
+	if logger.IsLevelEnabled(ErrorLevel) {
+		entry := logger.newEntry()
+		entry.Error(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatal(args ...interface{}) {
+	if logger.IsLevelEnabled(FatalLevel) {
+		entry := logger.newEntry()
+		entry.Fatal(args...)
+		logger.releaseEntry(entry)
+	}
+	logger.Exit(1)
+}
+
+func (logger *Logger) Panic(args ...interface{}) {
+	if logger.IsLevelEnabled(PanicLevel) {
+		entry := logger.newEntry()
+		entry.Panic(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Traceln(args ...interface{}) {
+	if logger.IsLevelEnabled(TraceLevel) {
+		entry := logger.newEntry()
+		entry.Traceln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Debugln(args ...interface{}) {
+	if logger.IsLevelEnabled(DebugLevel) {
+		entry := logger.newEntry()
+		entry.Debugln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Infoln(args ...interface{}) {
+	if logger.IsLevelEnabled(InfoLevel) {
+		entry := logger.newEntry()
+		entry.Infoln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Println(args ...interface{}) {
+	entry := logger.newEntry()
+	entry.Println(args...)
+	logger.releaseEntry(entry)
+}
+
+func (logger *Logger) Warnln(args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Warningln(args ...interface{}) {
+	if logger.IsLevelEnabled(WarnLevel) {
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Errorln(args ...interface{}) {
+	if logger.IsLevelEnabled(ErrorLevel) {
+		entry := logger.newEntry()
+		entry.Errorln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Fatalln(args ...interface{}) {
+	if logger.IsLevelEnabled(FatalLevel) {
+		entry := logger.newEntry()
+		entry.Fatalln(args...)
+		logger.releaseEntry(entry)
+	}
+	logger.Exit(1)
+}
+
+func (logger *Logger) Panicln(args ...interface{}) {
+	if logger.IsLevelEnabled(PanicLevel) {
+		entry := logger.newEntry()
+		entry.Panicln(args...)
+		logger.releaseEntry(entry)
+	}
+}
+
+func (logger *Logger) Exit(code int) {
+	runHandlers()
+	if logger.ExitFunc == nil {
+		logger.ExitFunc = os.Exit
+	}
+	logger.ExitFunc(code)
+}
+
+//When file is opened with appending mode, it's safe to
+//write concurrently to a file (within 4k message on Linux).
+//In these cases user can choose to disable the lock.
+func (logger *Logger) SetNoLock() {
+	logger.mu.Disable()
+}
+
+func (logger *Logger) level() Level {
+	return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
+}
+
+// SetLevel sets the logger level.
+func (logger *Logger) SetLevel(level Level) {
+	atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
+}
+
+// GetLevel returns the logger level.
+func (logger *Logger) GetLevel() Level {
+	return logger.level()
+}
+
+// AddHook adds a hook to the logger hooks.
+func (logger *Logger) AddHook(hook Hook) {
+	logger.mu.Lock()
+	defer logger.mu.Unlock()
+	logger.Hooks.Add(hook)
+}
+
+// IsLevelEnabled checks if the log level of the logger is greater than the level param
+func (logger *Logger) IsLevelEnabled(level Level) bool {
+	return logger.level() >= level
+}
+
+// SetFormatter sets the logger formatter.
+func (logger *Logger) SetFormatter(formatter Formatter) {
+	logger.mu.Lock()
+	defer logger.mu.Unlock()
+	logger.Formatter = formatter
+}
+
+// SetOutput sets the logger output.
+func (logger *Logger) SetOutput(output io.Writer) {
+	logger.mu.Lock()
+	defer logger.mu.Unlock()
+	logger.Out = output
+}
+
+func (logger *Logger) SetReportCaller(reportCaller bool) {
+	logger.mu.Lock()
+	defer logger.mu.Unlock()
+	logger.ReportCaller = reportCaller
+}
+
+// ReplaceHooks replaces the logger hooks and returns the old ones
+func (logger *Logger) ReplaceHooks(hooks LevelHooks) LevelHooks {
+	logger.mu.Lock()
+	oldHooks := logger.Hooks
+	logger.Hooks = hooks
+	logger.mu.Unlock()
+	return oldHooks
+}

vendor/github.com/sirupsen/logrus/logger_bench_test.go

@@ -0,0 +1,85 @@
+package logrus
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+// smallFields is a small size data set for benchmarking
+var loggerFields = Fields{
+	"foo":   "bar",
+	"baz":   "qux",
+	"one":   "two",
+	"three": "four",
+}
+
+func BenchmarkDummyLogger(b *testing.B) {
+	nullf, err := os.OpenFile("/dev/null", os.O_WRONLY, 0666)
+	if err != nil {
+		b.Fatalf("%v", err)
+	}
+	defer nullf.Close()
+	doLoggerBenchmark(b, nullf, &TextFormatter{DisableColors: true}, smallFields)
+}
+
+func BenchmarkDummyLoggerNoLock(b *testing.B) {
+	nullf, err := os.OpenFile("/dev/null", os.O_WRONLY|os.O_APPEND, 0666)
+	if err != nil {
+		b.Fatalf("%v", err)
+	}
+	defer nullf.Close()
+	doLoggerBenchmarkNoLock(b, nullf, &TextFormatter{DisableColors: true}, smallFields)
+}
+
+func doLoggerBenchmark(b *testing.B, out *os.File, formatter Formatter, fields Fields) {
+	logger := Logger{
+		Out:       out,
+		Level:     InfoLevel,
+		Formatter: formatter,
+	}
+	entry := logger.WithFields(fields)
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			entry.Info("aaa")
+		}
+	})
+}
+
+func doLoggerBenchmarkNoLock(b *testing.B, out *os.File, formatter Formatter, fields Fields) {
+	logger := Logger{
+		Out:       out,
+		Level:     InfoLevel,
+		Formatter: formatter,
+	}
+	logger.SetNoLock()
+	entry := logger.WithFields(fields)
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			entry.Info("aaa")
+		}
+	})
+}
+
+func BenchmarkLoggerJSONFormatter(b *testing.B) {
+	doLoggerBenchmarkWithFormatter(b, &JSONFormatter{})
+}
+
+func BenchmarkLoggerTextFormatter(b *testing.B) {
+	doLoggerBenchmarkWithFormatter(b, &TextFormatter{})
+}
+
+func doLoggerBenchmarkWithFormatter(b *testing.B, f Formatter) {
+	b.SetParallelism(100)
+	log := New()
+	log.Formatter = f
+	log.Out = ioutil.Discard
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			log.
+				WithField("foo1", "bar1").
+				WithField("foo2", "bar2").
+				Info("this is a dummy log")
+		}
+	})
+}

vendor/github.com/sirupsen/logrus/logger_test.go

@@ -0,0 +1,42 @@
+package logrus
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestFieldValueError(t *testing.T) {
+	buf := &bytes.Buffer{}
+	l := &Logger{
+		Out:       buf,
+		Formatter: new(JSONFormatter),
+		Hooks:     make(LevelHooks),
+		Level:     DebugLevel,
+	}
+	l.WithField("func", func() {}).Info("test")
+	fmt.Println(buf.String())
+	var data map[string]interface{}
+	json.Unmarshal(buf.Bytes(), &data)
+	_, ok := data[FieldKeyLogrusError]
+	require.True(t, ok)
+}
+
+func TestNoFieldValueError(t *testing.T) {
+	buf := &bytes.Buffer{}
+	l := &Logger{
+		Out:       buf,
+		Formatter: new(JSONFormatter),
+		Hooks:     make(LevelHooks),
+		Level:     DebugLevel,
+	}
+	l.WithField("str", "str").Info("test")
+	fmt.Println(buf.String())
+	var data map[string]interface{}
+	json.Unmarshal(buf.Bytes(), &data)
+	_, ok := data[FieldKeyLogrusError]
+	require.False(t, ok)
+}

vendor/github.com/sirupsen/logrus/logrus.go

@@ -0,0 +1,178 @@
+package logrus
+
+import (
+	"fmt"
+	"log"
+	"strings"
+)
+
+// Fields type, used to pass to `WithFields`.
+type Fields map[string]interface{}
+
+// Level type
+type Level uint32
+
+// Convert the Level to a string. E.g. PanicLevel becomes "panic".
+func (level Level) String() string {
+	switch level {
+	case TraceLevel:
+		return "trace"
+	case DebugLevel:
+		return "debug"
+	case InfoLevel:
+		return "info"
+	case WarnLevel:
+		return "warning"
+	case ErrorLevel:
+		return "error"
+	case FatalLevel:
+		return "fatal"
+	case PanicLevel:
+		return "panic"
+	}
+
+	return "unknown"
+}
+
+// ParseLevel takes a string level and returns the Logrus log level constant.
+func ParseLevel(lvl string) (Level, error) {
+	switch strings.ToLower(lvl) {
+	case "panic":
+		return PanicLevel, nil
+	case "fatal":
+		return FatalLevel, nil
+	case "error":
+		return ErrorLevel, nil
+	case "warn", "warning":
+		return WarnLevel, nil
+	case "info":
+		return InfoLevel, nil
+	case "debug":
+		return DebugLevel, nil
+	case "trace":
+		return TraceLevel, nil
+	}
+
+	var l Level
+	return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (level *Level) UnmarshalText(text []byte) error {
+	l, err := ParseLevel(string(text))
+	if err != nil {
+		return err
+	}
+
+	*level = Level(l)
+
+	return nil
+}
+
+// A constant exposing all logging levels
+var AllLevels = []Level{
+	PanicLevel,
+	FatalLevel,
+	ErrorLevel,
+	WarnLevel,
+	InfoLevel,
+	DebugLevel,
+	TraceLevel,
+}
+
+// These are the different logging levels. You can set the logging level to log
+// on your instance of logger, obtained with `logrus.New()`.
+const (
+	// PanicLevel level, highest level of severity. Logs and then calls panic with the
+	// message passed to Debug, Info, ...
+	PanicLevel Level = iota
+	// FatalLevel level. Logs and then calls `logger.Exit(1)`. It will exit even if the
+	// logging level is set to Panic.
+	FatalLevel
+	// ErrorLevel level. Logs. Used for errors that should definitely be noted.
+	// Commonly used for hooks to send errors to an error tracking service.
+	ErrorLevel
+	// WarnLevel level. Non-critical entries that deserve eyes.
+	WarnLevel
+	// InfoLevel level. General operational entries about what's going on inside the
+	// application.
+	InfoLevel
+	// DebugLevel level. Usually only enabled when debugging. Very verbose logging.
+	DebugLevel
+	// TraceLevel level. Designates finer-grained informational events than the Debug.
+	TraceLevel
+)
+
+// Won't compile if StdLogger can't be realized by a log.Logger
+var (
+	_ StdLogger = &log.Logger{}
+	_ StdLogger = &Entry{}
+	_ StdLogger = &Logger{}
+)
+
+// StdLogger is what your logrus-enabled library should take, that way
+// it'll accept a stdlib logger and a logrus logger. There's no standard
+// interface, this is the closest we get, unfortunately.
+type StdLogger interface {
+	Print(...interface{})
+	Printf(string, ...interface{})
+	Println(...interface{})
+
+	Fatal(...interface{})
+	Fatalf(string, ...interface{})
+	Fatalln(...interface{})
+
+	Panic(...interface{})
+	Panicf(string, ...interface{})
+	Panicln(...interface{})
+}
+
+// The FieldLogger interface generalizes the Entry and Logger types
+type FieldLogger interface {
+	WithField(key string, value interface{}) *Entry
+	WithFields(fields Fields) *Entry
+	WithError(err error) *Entry
+
+	Debugf(format string, args ...interface{})
+	Infof(format string, args ...interface{})
+	Printf(format string, args ...interface{})
+	Warnf(format string, args ...interface{})
+	Warningf(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+	Fatalf(format string, args ...interface{})
+	Panicf(format string, args ...interface{})
+
+	Debug(args ...interface{})
+	Info(args ...interface{})
+	Print(args ...interface{})
+	Warn(args ...interface{})
+	Warning(args ...interface{})
+	Error(args ...interface{})
+	Fatal(args ...interface{})
+	Panic(args ...interface{})
+
+	Debugln(args ...interface{})
+	Infoln(args ...interface{})
+	Println(args ...interface{})
+	Warnln(args ...interface{})
+	Warningln(args ...interface{})
+	Errorln(args ...interface{})
+	Fatalln(args ...interface{})
+	Panicln(args ...interface{})
+
+	// IsDebugEnabled() bool
+	// IsInfoEnabled() bool
+	// IsWarnEnabled() bool
+	// IsErrorEnabled() bool
+	// IsFatalEnabled() bool
+	// IsPanicEnabled() bool
+}
+
+// Ext1FieldLogger (the first extension to FieldLogger) is superfluous, it is
+// here for consistancy. Do not use. Use Logger or Entry instead.
+type Ext1FieldLogger interface {
+	FieldLogger
+	Tracef(format string, args ...interface{})
+	Trace(args ...interface{})
+	Traceln(args ...interface{})
+}

vendor/github.com/sirupsen/logrus/logrus_test.go

@@ -0,0 +1,716 @@
+package logrus_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	. "github.com/sirupsen/logrus"
+	. "github.com/sirupsen/logrus/internal/testutils"
+)
+
+// TestReportCaller verifies that when ReportCaller is set, the 'func' field
+// is added, and when it is unset it is not set or modified
+// Verify that functions within the Logrus package aren't considered when
+// discovering the caller.
+func TestReportCallerWhenConfigured(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.ReportCaller = false
+		log.Print("testNoCaller")
+	}, func(fields Fields) {
+		assert.Equal(t, "testNoCaller", fields["msg"])
+		assert.Equal(t, "info", fields["level"])
+		assert.Equal(t, nil, fields["func"])
+	})
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.ReportCaller = true
+		log.Print("testWithCaller")
+	}, func(fields Fields) {
+		assert.Equal(t, "testWithCaller", fields["msg"])
+		assert.Equal(t, "info", fields["level"])
+		assert.Equal(t,
+			"github.com/sirupsen/logrus_test.TestReportCallerWhenConfigured.func3", fields["func"])
+	})
+}
+
+func logSomething(t *testing.T, message string) Fields {
+	var buffer bytes.Buffer
+	var fields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+	logger.ReportCaller = true
+
+	entry := logger.WithFields(Fields{
+		"foo": "bar",
+	})
+
+	entry.Info(message)
+
+	err := json.Unmarshal(buffer.Bytes(), &fields)
+	assert.Nil(t, err)
+
+	return fields
+}
+
+// TestReportCallerHelperDirect - verify reference when logging from a regular function
+func TestReportCallerHelperDirect(t *testing.T) {
+	fields := logSomething(t, "direct")
+
+	assert.Equal(t, "direct", fields["msg"])
+	assert.Equal(t, "info", fields["level"])
+	assert.Regexp(t, "github.com/.*/logrus_test.logSomething", fields["func"])
+}
+
+// TestReportCallerHelperDirect - verify reference when logging from a function called via pointer
+func TestReportCallerHelperViaPointer(t *testing.T) {
+	fptr := logSomething
+	fields := fptr(t, "via pointer")
+
+	assert.Equal(t, "via pointer", fields["msg"])
+	assert.Equal(t, "info", fields["level"])
+	assert.Regexp(t, "github.com/.*/logrus_test.logSomething", fields["func"])
+}
+
+func TestPrint(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Print("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test", fields["msg"])
+		assert.Equal(t, "info", fields["level"])
+	})
+}
+
+func TestInfo(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test", fields["msg"])
+		assert.Equal(t, "info", fields["level"])
+	})
+}
+
+func TestWarn(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Warn("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test", fields["msg"])
+		assert.Equal(t, "warning", fields["level"])
+	})
+}
+
+func TestInfolnShouldAddSpacesBetweenStrings(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Infoln("test", "test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test test", fields["msg"])
+	})
+}
+
+func TestInfolnShouldAddSpacesBetweenStringAndNonstring(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Infoln("test", 10)
+	}, func(fields Fields) {
+		assert.Equal(t, "test 10", fields["msg"])
+	})
+}
+
+func TestInfolnShouldAddSpacesBetweenTwoNonStrings(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Infoln(10, 10)
+	}, func(fields Fields) {
+		assert.Equal(t, "10 10", fields["msg"])
+	})
+}
+
+func TestInfoShouldAddSpacesBetweenTwoNonStrings(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Infoln(10, 10)
+	}, func(fields Fields) {
+		assert.Equal(t, "10 10", fields["msg"])
+	})
+}
+
+func TestInfoShouldNotAddSpacesBetweenStringAndNonstring(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Info("test", 10)
+	}, func(fields Fields) {
+		assert.Equal(t, "test10", fields["msg"])
+	})
+}
+
+func TestInfoShouldNotAddSpacesBetweenStrings(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.Info("test", "test")
+	}, func(fields Fields) {
+		assert.Equal(t, "testtest", fields["msg"])
+	})
+}
+
+func TestWithFieldsShouldAllowAssignments(t *testing.T) {
+	var buffer bytes.Buffer
+	var fields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+
+	localLog := logger.WithFields(Fields{
+		"key1": "value1",
+	})
+
+	localLog.WithField("key2", "value2").Info("test")
+	err := json.Unmarshal(buffer.Bytes(), &fields)
+	assert.Nil(t, err)
+
+	assert.Equal(t, "value2", fields["key2"])
+	assert.Equal(t, "value1", fields["key1"])
+
+	buffer = bytes.Buffer{}
+	fields = Fields{}
+	localLog.Info("test")
+	err = json.Unmarshal(buffer.Bytes(), &fields)
+	assert.Nil(t, err)
+
+	_, ok := fields["key2"]
+	assert.Equal(t, false, ok)
+	assert.Equal(t, "value1", fields["key1"])
+}
+
+func TestUserSuppliedFieldDoesNotOverwriteDefaults(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithField("msg", "hello").Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test", fields["msg"])
+	})
+}
+
+func TestUserSuppliedMsgFieldHasPrefix(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithField("msg", "hello").Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "test", fields["msg"])
+		assert.Equal(t, "hello", fields["fields.msg"])
+	})
+}
+
+func TestUserSuppliedTimeFieldHasPrefix(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithField("time", "hello").Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "hello", fields["fields.time"])
+	})
+}
+
+func TestUserSuppliedLevelFieldHasPrefix(t *testing.T) {
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithField("level", 1).Info("test")
+	}, func(fields Fields) {
+		assert.Equal(t, "info", fields["level"])
+		assert.Equal(t, 1.0, fields["fields.level"]) // JSON has floats only
+	})
+}
+
+func TestDefaultFieldsAreNotPrefixed(t *testing.T) {
+	LogAndAssertText(t, func(log *Logger) {
+		ll := log.WithField("herp", "derp")
+		ll.Info("hello")
+		ll.Info("bye")
+	}, func(fields map[string]string) {
+		for _, fieldName := range []string{"fields.level", "fields.time", "fields.msg"} {
+			if _, ok := fields[fieldName]; ok {
+				t.Fatalf("should not have prefixed %q: %v", fieldName, fields)
+			}
+		}
+	})
+}
+
+func TestWithTimeShouldOverrideTime(t *testing.T) {
+	now := time.Now().Add(24 * time.Hour)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithTime(now).Info("foobar")
+	}, func(fields Fields) {
+		assert.Equal(t, fields["time"], now.Format(time.RFC3339))
+	})
+}
+
+func TestWithTimeShouldNotOverrideFields(t *testing.T) {
+	now := time.Now().Add(24 * time.Hour)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithField("herp", "derp").WithTime(now).Info("blah")
+	}, func(fields Fields) {
+		assert.Equal(t, fields["time"], now.Format(time.RFC3339))
+		assert.Equal(t, fields["herp"], "derp")
+	})
+}
+
+func TestWithFieldShouldNotOverrideTime(t *testing.T) {
+	now := time.Now().Add(24 * time.Hour)
+
+	LogAndAssertJSON(t, func(log *Logger) {
+		log.WithTime(now).WithField("herp", "derp").Info("blah")
+	}, func(fields Fields) {
+		assert.Equal(t, fields["time"], now.Format(time.RFC3339))
+		assert.Equal(t, fields["herp"], "derp")
+	})
+}
+
+func TestTimeOverrideMultipleLogs(t *testing.T) {
+	var buffer bytes.Buffer
+	var firstFields, secondFields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	formatter := new(JSONFormatter)
+	formatter.TimestampFormat = time.StampMilli
+	logger.Formatter = formatter
+
+	llog := logger.WithField("herp", "derp")
+	llog.Info("foo")
+
+	err := json.Unmarshal(buffer.Bytes(), &firstFields)
+	assert.NoError(t, err, "should have decoded first message")
+
+	buffer.Reset()
+
+	time.Sleep(10 * time.Millisecond)
+	llog.Info("bar")
+
+	err = json.Unmarshal(buffer.Bytes(), &secondFields)
+	assert.NoError(t, err, "should have decoded second message")
+
+	assert.NotEqual(t, firstFields["time"], secondFields["time"], "timestamps should not be equal")
+}
+
+func TestDoubleLoggingDoesntPrefixPreviousFields(t *testing.T) {
+
+	var buffer bytes.Buffer
+	var fields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+
+	llog := logger.WithField("context", "eating raw fish")
+
+	llog.Info("looks delicious")
+
+	err := json.Unmarshal(buffer.Bytes(), &fields)
+	assert.NoError(t, err, "should have decoded first message")
+	assert.Equal(t, len(fields), 4, "should only have msg/time/level/context fields")
+	assert.Equal(t, fields["msg"], "looks delicious")
+	assert.Equal(t, fields["context"], "eating raw fish")
+
+	buffer.Reset()
+
+	llog.Warn("omg it is!")
+
+	err = json.Unmarshal(buffer.Bytes(), &fields)
+	assert.NoError(t, err, "should have decoded second message")
+	assert.Equal(t, len(fields), 4, "should only have msg/time/level/context fields")
+	assert.Equal(t, "omg it is!", fields["msg"])
+	assert.Equal(t, "eating raw fish", fields["context"])
+	assert.Nil(t, fields["fields.msg"], "should not have prefixed previous `msg` entry")
+
+}
+
+func TestNestedLoggingReportsCorrectCaller(t *testing.T) {
+	var buffer bytes.Buffer
+	var fields Fields
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+	logger.ReportCaller = true
+
+	llog := logger.WithField("context", "eating raw fish")
+
+	llog.Info("looks delicious")
+
+	err := json.Unmarshal(buffer.Bytes(), &fields)
+	require.NoError(t, err, "should have decoded first message")
+	assert.Equal(t, 6, len(fields), "should have msg/time/level/func/context fields")
+	assert.Equal(t, "looks delicious", fields["msg"])
+	assert.Equal(t, "eating raw fish", fields["context"])
+	assert.Equal(t,
+		"github.com/sirupsen/logrus_test.TestNestedLoggingReportsCorrectCaller", fields["func"])
+	cwd, err := os.Getwd()
+	require.NoError(t, err)
+	assert.Equal(t, filepath.ToSlash(cwd+"/logrus_test.go:340"), filepath.ToSlash(fields["file"].(string)))
+
+	buffer.Reset()
+
+	logger.WithFields(Fields{
+		"Clyde": "Stubblefield",
+	}).WithFields(Fields{
+		"Jab'o": "Starks",
+	}).WithFields(Fields{
+		"uri": "https://www.youtube.com/watch?v=V5DTznu-9v0",
+	}).WithFields(Fields{
+		"func": "y drummer",
+	}).WithFields(Fields{
+		"James": "Brown",
+	}).Print("The hardest workin' man in show business")
+
+	err = json.Unmarshal(buffer.Bytes(), &fields)
+	assert.NoError(t, err, "should have decoded second message")
+	assert.Equal(t, 11, len(fields), "should have all builtin fields plus foo,bar,baz,...")
+	assert.Equal(t, "Stubblefield", fields["Clyde"])
+	assert.Equal(t, "Starks", fields["Jab'o"])
+	assert.Equal(t, "https://www.youtube.com/watch?v=V5DTznu-9v0", fields["uri"])
+	assert.Equal(t, "y drummer", fields["fields.func"])
+	assert.Equal(t, "Brown", fields["James"])
+	assert.Equal(t, "The hardest workin' man in show business", fields["msg"])
+	assert.Nil(t, fields["fields.msg"], "should not have prefixed previous `msg` entry")
+	assert.Equal(t,
+		"github.com/sirupsen/logrus_test.TestNestedLoggingReportsCorrectCaller", fields["func"])
+	require.NoError(t, err)
+	assert.Equal(t, filepath.ToSlash(cwd+"/logrus_test.go:365"), filepath.ToSlash(fields["file"].(string)))
+
+	logger.ReportCaller = false // return to default value
+}
+
+func logLoop(iterations int, reportCaller bool) {
+	var buffer bytes.Buffer
+
+	logger := New()
+	logger.Out = &buffer
+	logger.Formatter = new(JSONFormatter)
+	logger.ReportCaller = reportCaller
+
+	for i := 0; i < iterations; i++ {
+		logger.Infof("round %d of %d", i, iterations)
+	}
+}
+
+// Assertions for upper bounds to reporting overhead
+func TestCallerReportingOverhead(t *testing.T) {
+	iterations := 5000
+	before := time.Now()
+	logLoop(iterations, false)
+	during := time.Now()
+	logLoop(iterations, true)
+	after := time.Now()
+
+	elapsedNotReporting := during.Sub(before).Nanoseconds()
+	elapsedReporting := after.Sub(during).Nanoseconds()
+
+	maxDelta := 1 * time.Second
+	assert.WithinDuration(t, during, before, maxDelta,
+		"%d log calls without caller name lookup takes less than %d second(s) (was %d nanoseconds)",
+		iterations, maxDelta.Seconds(), elapsedNotReporting)
+	assert.WithinDuration(t, after, during, maxDelta,
+		"%d log calls without caller name lookup takes less than %d second(s) (was %d nanoseconds)",
+		iterations, maxDelta.Seconds(), elapsedReporting)
+}
+
+// benchmarks for both with and without caller-function reporting
+func BenchmarkWithoutCallerTracing(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		logLoop(1000, false)
+	}
+}
+
+func BenchmarkWithCallerTracing(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		logLoop(1000, true)
+	}
+}
+
+func TestConvertLevelToString(t *testing.T) {
+	assert.Equal(t, "trace", TraceLevel.String())
+	assert.Equal(t, "debug", DebugLevel.String())
+	assert.Equal(t, "info", InfoLevel.String())
+	assert.Equal(t, "warning", WarnLevel.String())
+	assert.Equal(t, "error", ErrorLevel.String())
+	assert.Equal(t, "fatal", FatalLevel.String())
+	assert.Equal(t, "panic", PanicLevel.String())
+}
+
+func TestParseLevel(t *testing.T) {
+	l, err := ParseLevel("panic")
+	assert.Nil(t, err)
+	assert.Equal(t, PanicLevel, l)
+
+	l, err = ParseLevel("PANIC")
+	assert.Nil(t, err)
+	assert.Equal(t, PanicLevel, l)
+
+	l, err = ParseLevel("fatal")
+	assert.Nil(t, err)
+	assert.Equal(t, FatalLevel, l)
+
+	l, err = ParseLevel("FATAL")
+	assert.Nil(t, err)
+	assert.Equal(t, FatalLevel, l)
+
+	l, err = ParseLevel("error")
+	assert.Nil(t, err)
+	assert.Equal(t, ErrorLevel, l)
+
+	l, err = ParseLevel("ERROR")
+	assert.Nil(t, err)
+	assert.Equal(t, ErrorLevel, l)
+
+	l, err = ParseLevel("warn")
+	assert.Nil(t, err)
+	assert.Equal(t, WarnLevel, l)
+
+	l, err = ParseLevel("WARN")
+	assert.Nil(t, err)
+	assert.Equal(t, WarnLevel, l)
+
+	l, err = ParseLevel("warning")
+	assert.Nil(t, err)
+	assert.Equal(t, WarnLevel, l)
+
+	l, err = ParseLevel("WARNING")
+	assert.Nil(t, err)
+	assert.Equal(t, WarnLevel, l)
+
+	l, err = ParseLevel("info")
+	assert.Nil(t, err)
+	assert.Equal(t, InfoLevel, l)
+
+	l, err = ParseLevel("INFO")
+	assert.Nil(t, err)
+	assert.Equal(t, InfoLevel, l)
+
+	l, err = ParseLevel("debug")
+	assert.Nil(t, err)
+	assert.Equal(t, DebugLevel, l)
+
+	l, err = ParseLevel("DEBUG")
+	assert.Nil(t, err)
+	assert.Equal(t, DebugLevel, l)
+
+	l, err = ParseLevel("trace")
+	assert.Nil(t, err)
+	assert.Equal(t, TraceLevel, l)
+
+	l, err = ParseLevel("TRACE")
+	assert.Nil(t, err)
+	assert.Equal(t, TraceLevel, l)
+
+	l, err = ParseLevel("invalid")
+	assert.Equal(t, "not a valid logrus Level: \"invalid\"", err.Error())
+}
+
+func TestUnmarshalText(t *testing.T) {
+	var u Level
+	for _, level := range AllLevels {
+		t.Run(level.String(), func(t *testing.T) {
+			assert.NoError(t, u.UnmarshalText([]byte(level.String())))
+			assert.Equal(t, level, u)
+		})
+	}
+	t.Run("invalid", func(t *testing.T) {
+		assert.Error(t, u.UnmarshalText([]byte("invalid")))
+	})
+}
+
+func TestGetSetLevelRace(t *testing.T) {
+	wg := sync.WaitGroup{}
+	for i := 0; i < 100; i++ {
+		wg.Add(1)
+		go func(i int) {
+			defer wg.Done()
+			if i%2 == 0 {
+				SetLevel(InfoLevel)
+			} else {
+				GetLevel()
+			}
+		}(i)
+
+	}
+	wg.Wait()
+}
+
+func TestLoggingRace(t *testing.T) {
+	logger := New()
+
+	var wg sync.WaitGroup
+	wg.Add(100)
+
+	for i := 0; i < 100; i++ {
+		go func() {
+			logger.Info("info")
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+}
+
+func TestLoggingRaceWithHooksOnEntry(t *testing.T) {
+	logger := New()
+	hook := new(ModifyHook)
+	logger.AddHook(hook)
+	entry := logger.WithField("context", "clue")
+
+	var wg sync.WaitGroup
+	wg.Add(100)
+
+	for i := 0; i < 100; i++ {
+		go func() {
+			entry.Info("info")
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+}
+
+func TestReplaceHooks(t *testing.T) {
+	old, cur := &TestHook{}, &TestHook{}
+
+	logger := New()
+	logger.SetOutput(ioutil.Discard)
+	logger.AddHook(old)
+
+	hooks := make(LevelHooks)
+	hooks.Add(cur)
+	replaced := logger.ReplaceHooks(hooks)
+
+	logger.Info("test")
+
+	assert.Equal(t, old.Fired, false)
+	assert.Equal(t, cur.Fired, true)
+
+	logger.ReplaceHooks(replaced)
+	logger.Info("test")
+	assert.Equal(t, old.Fired, true)
+}
+
+// Compile test
+func TestLogrusInterfaces(t *testing.T) {
+	var buffer bytes.Buffer
+	// This verifies FieldLogger and Ext1FieldLogger work as designed.
+	// Please don't use them. Use Logger and Entry directly.
+	fn := func(xl Ext1FieldLogger) {
+		var l FieldLogger = xl
+		b := l.WithField("key", "value")
+		b.Debug("Test")
+	}
+	// test logger
+	logger := New()
+	logger.Out = &buffer
+	fn(logger)
+
+	// test Entry
+	e := logger.WithField("another", "value")
+	fn(e)
+}
+
+// Implements io.Writer using channels for synchronization, so we can wait on
+// the Entry.Writer goroutine to write in a non-racey way. This does assume that
+// there is a single call to Logger.Out for each message.
+type channelWriter chan []byte
+
+func (cw channelWriter) Write(p []byte) (int, error) {
+	cw <- p
+	return len(p), nil
+}
+
+func TestEntryWriter(t *testing.T) {
+	cw := channelWriter(make(chan []byte, 1))
+	log := New()
+	log.Out = cw
+	log.Formatter = new(JSONFormatter)
+	log.WithField("foo", "bar").WriterLevel(WarnLevel).Write([]byte("hello\n"))
+
+	bs := <-cw
+	var fields Fields
+	err := json.Unmarshal(bs, &fields)
+	assert.Nil(t, err)
+	assert.Equal(t, fields["foo"], "bar")
+	assert.Equal(t, fields["level"], "warning")
+}
+
+func TestLogLevelEnabled(t *testing.T) {
+	log := New()
+	log.SetLevel(PanicLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(FatalLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(ErrorLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(WarnLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(InfoLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(DebugLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, false, log.IsLevelEnabled(TraceLevel))
+
+	log.SetLevel(TraceLevel)
+	assert.Equal(t, true, log.IsLevelEnabled(PanicLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(FatalLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(ErrorLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(WarnLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(InfoLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(DebugLevel))
+	assert.Equal(t, true, log.IsLevelEnabled(TraceLevel))
+}
+
+func TestReportCallerOnTextFormatter(t *testing.T) {
+	l := New()
+
+	l.Formatter.(*TextFormatter).ForceColors = true
+	l.Formatter.(*TextFormatter).DisableColors = false
+	l.WithFields(Fields{"func": "func", "file": "file"}).Info("test")
+
+	l.Formatter.(*TextFormatter).ForceColors = false
+	l.Formatter.(*TextFormatter).DisableColors = true
+	l.WithFields(Fields{"func": "func", "file": "file"}).Info("test")
+}

vendor/github.com/sirupsen/logrus/terminal_check_appengine.go

@@ -0,0 +1,11 @@
+// +build appengine
+
+package logrus
+
+import (
+	"io"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	return true
+}

vendor/github.com/sirupsen/logrus/terminal_check_js.go

@@ -0,0 +1,11 @@
+// +build js
+
+package logrus
+
+import (
+	"io"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	return false
+}

vendor/github.com/sirupsen/logrus/terminal_check_notappengine.go

@@ -0,0 +1,19 @@
+// +build !appengine,!js,!windows
+
+package logrus
+
+import (
+	"io"
+	"os"
+
+	"golang.org/x/crypto/ssh/terminal"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	switch v := w.(type) {
+	case *os.File:
+		return terminal.IsTerminal(int(v.Fd()))
+	default:
+		return false
+	}
+}

vendor/github.com/sirupsen/logrus/terminal_check_windows.go

@@ -0,0 +1,20 @@
+// +build !appengine,!js,windows
+
+package logrus
+
+import (
+	"io"
+	"os"
+	"syscall"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	switch v := w.(type) {
+	case *os.File:
+		var mode uint32
+		err := syscall.GetConsoleMode(syscall.Handle(v.Fd()), &mode)
+		return err == nil
+	default:
+		return false
+	}
+}

vendor/github.com/sirupsen/logrus/terminal_notwindows.go

@@ -0,0 +1,8 @@
+// +build !windows
+
+package logrus
+
+import "io"
+
+func initTerminal(w io.Writer) {
+}

vendor/github.com/sirupsen/logrus/terminal_windows.go

@@ -0,0 +1,18 @@
+// +build !appengine,!js,windows
+
+package logrus
+
+import (
+	"io"
+	"os"
+	"syscall"
+
+	sequences "github.com/konsorten/go-windows-terminal-sequences"
+)
+
+func initTerminal(w io.Writer) {
+	switch v := w.(type) {
+	case *os.File:
+		sequences.EnableVirtualTerminalProcessing(syscall.Handle(v.Fd()), true)
+	}
+}

vendor/github.com/sirupsen/logrus/text_formatter.go

@@ -0,0 +1,269 @@
+package logrus
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	nocolor = 0
+	red     = 31
+	green   = 32
+	yellow  = 33
+	blue    = 36
+	gray    = 37
+)
+
+var (
+	baseTimestamp time.Time
+	emptyFieldMap FieldMap
+)
+
+func init() {
+	baseTimestamp = time.Now()
+}
+
+// TextFormatter formats logs into text
+type TextFormatter struct {
+	// Set to true to bypass checking for a TTY before outputting colors.
+	ForceColors bool
+
+	// Force disabling colors.
+	DisableColors bool
+
+	// Override coloring based on CLICOLOR and CLICOLOR_FORCE. - https://bixense.com/clicolors/
+	EnvironmentOverrideColors bool
+
+	// Disable timestamp logging. useful when output is redirected to logging
+	// system that already adds timestamps.
+	DisableTimestamp bool
+
+	// Enable logging the full timestamp when a TTY is attached instead of just
+	// the time passed since beginning of execution.
+	FullTimestamp bool
+
+	// TimestampFormat to use for display when a full timestamp is printed
+	TimestampFormat string
+
+	// The fields are sorted by default for a consistent output. For applications
+	// that log extremely frequently and don't use the JSON formatter this may not
+	// be desired.
+	DisableSorting bool
+
+	// The keys sorting function, when uninitialized it uses sort.Strings.
+	SortingFunc func([]string)
+
+	// Disables the truncation of the level text to 4 characters.
+	DisableLevelTruncation bool
+
+	// QuoteEmptyFields will wrap empty fields in quotes if true
+	QuoteEmptyFields bool
+
+	// Whether the logger's out is to a terminal
+	isTerminal bool
+
+	// FieldMap allows users to customize the names of keys for default fields.
+	// As an example:
+	// formatter := &TextFormatter{
+	//     FieldMap: FieldMap{
+	//         FieldKeyTime:  "@timestamp",
+	//         FieldKeyLevel: "@level",
+	//         FieldKeyMsg:   "@message"}}
+	FieldMap FieldMap
+
+	terminalInitOnce sync.Once
+}
+
+func (f *TextFormatter) init(entry *Entry) {
+	if entry.Logger != nil {
+		f.isTerminal = checkIfTerminal(entry.Logger.Out)
+
+		if f.isTerminal {
+			initTerminal(entry.Logger.Out)
+		}
+	}
+}
+
+func (f *TextFormatter) isColored() bool {
+	isColored := f.ForceColors || f.isTerminal
+
+	if f.EnvironmentOverrideColors {
+		if force, ok := os.LookupEnv("CLICOLOR_FORCE"); ok && force != "0" {
+			isColored = true
+		} else if ok && force == "0" {
+			isColored = false
+		} else if os.Getenv("CLICOLOR") == "0" {
+			isColored = false
+		}
+	}
+
+	return isColored && !f.DisableColors
+}
+
+// Format renders a single log entry
+func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
+	prefixFieldClashes(entry.Data, f.FieldMap, entry.HasCaller())
+
+	keys := make([]string, 0, len(entry.Data))
+	for k := range entry.Data {
+		keys = append(keys, k)
+	}
+
+	fixedKeys := make([]string, 0, 4+len(entry.Data))
+	if !f.DisableTimestamp {
+		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyTime))
+	}
+	fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLevel))
+	if entry.Message != "" {
+		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyMsg))
+	}
+	if entry.err != "" {
+		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
+	}
+	if entry.HasCaller() {
+		fixedKeys = append(fixedKeys,
+			f.FieldMap.resolve(FieldKeyFunc), f.FieldMap.resolve(FieldKeyFile))
+	}
+
+	if !f.DisableSorting {
+		if f.SortingFunc == nil {
+			sort.Strings(keys)
+			fixedKeys = append(fixedKeys, keys...)
+		} else {
+			if !f.isColored() {
+				fixedKeys = append(fixedKeys, keys...)
+				f.SortingFunc(fixedKeys)
+			} else {
+				f.SortingFunc(keys)
+			}
+		}
+	} else {
+		fixedKeys = append(fixedKeys, keys...)
+	}
+
+	var b *bytes.Buffer
+	if entry.Buffer != nil {
+		b = entry.Buffer
+	} else {
+		b = &bytes.Buffer{}
+	}
+
+	f.terminalInitOnce.Do(func() { f.init(entry) })
+
+	timestampFormat := f.TimestampFormat
+	if timestampFormat == "" {
+		timestampFormat = defaultTimestampFormat
+	}
+	if f.isColored() {
+		f.printColored(b, entry, keys, timestampFormat)
+	} else {
+		for _, key := range fixedKeys {
+			var value interface{}
+			switch {
+			case key == f.FieldMap.resolve(FieldKeyTime):
+				value = entry.Time.Format(timestampFormat)
+			case key == f.FieldMap.resolve(FieldKeyLevel):
+				value = entry.Level.String()
+			case key == f.FieldMap.resolve(FieldKeyMsg):
+				value = entry.Message
+			case key == f.FieldMap.resolve(FieldKeyLogrusError):
+				value = entry.err
+			case key == f.FieldMap.resolve(FieldKeyFunc) && entry.HasCaller():
+				value = entry.Caller.Function
+			case key == f.FieldMap.resolve(FieldKeyFile) && entry.HasCaller():
+				value = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
+			default:
+				value = entry.Data[key]
+			}
+			f.appendKeyValue(b, key, value)
+		}
+	}
+
+	b.WriteByte('\n')
+	return b.Bytes(), nil
+}
+
+func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []string, timestampFormat string) {
+	var levelColor int
+	switch entry.Level {
+	case DebugLevel, TraceLevel:
+		levelColor = gray
+	case WarnLevel:
+		levelColor = yellow
+	case ErrorLevel, FatalLevel, PanicLevel:
+		levelColor = red
+	default:
+		levelColor = blue
+	}
+
+	levelText := strings.ToUpper(entry.Level.String())
+	if !f.DisableLevelTruncation {
+		levelText = levelText[0:4]
+	}
+
+	// Remove a single newline if it already exists in the message to keep
+	// the behavior of logrus text_formatter the same as the stdlib log package
+	entry.Message = strings.TrimSuffix(entry.Message, "\n")
+
+	caller := ""
+
+	if entry.HasCaller() {
+		caller = fmt.Sprintf("%s:%d %s()",
+			entry.Caller.File, entry.Caller.Line, entry.Caller.Function)
+	}
+
+	if f.DisableTimestamp {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m%s %-44s ", levelColor, levelText, caller, entry.Message)
+	} else if !f.FullTimestamp {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d]%s %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), caller, entry.Message)
+	} else {
+		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s]%s %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), caller, entry.Message)
+	}
+	for _, k := range keys {
+		v := entry.Data[k]
+		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
+		f.appendValue(b, v)
+	}
+}
+
+func (f *TextFormatter) needsQuoting(text string) bool {
+	if f.QuoteEmptyFields && len(text) == 0 {
+		return true
+	}
+	for _, ch := range text {
+		if !((ch >= 'a' && ch <= 'z') ||
+			(ch >= 'A' && ch <= 'Z') ||
+			(ch >= '0' && ch <= '9') ||
+			ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
+			return true
+		}
+	}
+	return false
+}
+
+func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
+	if b.Len() > 0 {
+		b.WriteByte(' ')
+	}
+	b.WriteString(key)
+	b.WriteByte('=')
+	f.appendValue(b, value)
+}
+
+func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
+	stringVal, ok := value.(string)
+	if !ok {
+		stringVal = fmt.Sprint(value)
+	}
+
+	if !f.needsQuoting(stringVal) {
+		b.WriteString(stringVal)
+	} else {
+		b.WriteString(fmt.Sprintf("%q", stringVal))
+	}
+}

vendor/github.com/sirupsen/logrus/text_formatter_test.go

@@ -0,0 +1,480 @@
+package logrus
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os"
+	"sort"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFormatting(t *testing.T) {
+	tf := &TextFormatter{DisableColors: true}
+
+	testCases := []struct {
+		value    string
+		expected string
+	}{
+		{`foo`, "time=\"0001-01-01T00:00:00Z\" level=panic test=foo\n"},
+	}
+
+	for _, tc := range testCases {
+		b, _ := tf.Format(WithField("test", tc.value))
+
+		if string(b) != tc.expected {
+			t.Errorf("formatting expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected)
+		}
+	}
+}
+
+func TestQuoting(t *testing.T) {
+	tf := &TextFormatter{DisableColors: true}
+
+	checkQuoting := func(q bool, value interface{}) {
+		b, _ := tf.Format(WithField("test", value))
+		idx := bytes.Index(b, ([]byte)("test="))
+		cont := bytes.Contains(b[idx+5:], []byte("\""))
+		if cont != q {
+			if q {
+				t.Errorf("quoting expected for: %#v", value)
+			} else {
+				t.Errorf("quoting not expected for: %#v", value)
+			}
+		}
+	}
+
+	checkQuoting(false, "")
+	checkQuoting(false, "abcd")
+	checkQuoting(false, "v1.0")
+	checkQuoting(false, "1234567890")
+	checkQuoting(false, "/foobar")
+	checkQuoting(false, "foo_bar")
+	checkQuoting(false, "foo@bar")
+	checkQuoting(false, "foobar^")
+	checkQuoting(false, "+/-_^@f.oobar")
+	checkQuoting(true, "foobar$")
+	checkQuoting(true, "&foobar")
+	checkQuoting(true, "x y")
+	checkQuoting(true, "x,y")
+	checkQuoting(false, errors.New("invalid"))
+	checkQuoting(true, errors.New("invalid argument"))
+
+	// Test for quoting empty fields.
+	tf.QuoteEmptyFields = true
+	checkQuoting(true, "")
+	checkQuoting(false, "abcd")
+	checkQuoting(true, errors.New("invalid argument"))
+}
+
+func TestEscaping(t *testing.T) {
+	tf := &TextFormatter{DisableColors: true}
+
+	testCases := []struct {
+		value    string
+		expected string
+	}{
+		{`ba"r`, `ba\"r`},
+		{`ba'r`, `ba'r`},
+	}
+
+	for _, tc := range testCases {
+		b, _ := tf.Format(WithField("test", tc.value))
+		if !bytes.Contains(b, []byte(tc.expected)) {
+			t.Errorf("escaping expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected)
+		}
+	}
+}
+
+func TestEscaping_Interface(t *testing.T) {
+	tf := &TextFormatter{DisableColors: true}
+
+	ts := time.Now()
+
+	testCases := []struct {
+		value    interface{}
+		expected string
+	}{
+		{ts, fmt.Sprintf("\"%s\"", ts.String())},
+		{errors.New("error: something went wrong"), "\"error: something went wrong\""},
+	}
+
+	for _, tc := range testCases {
+		b, _ := tf.Format(WithField("test", tc.value))
+		if !bytes.Contains(b, []byte(tc.expected)) {
+			t.Errorf("escaping expected for %q (result was %q instead of %q)", tc.value, string(b), tc.expected)
+		}
+	}
+}
+
+func TestTimestampFormat(t *testing.T) {
+	checkTimeStr := func(format string) {
+		customFormatter := &TextFormatter{DisableColors: true, TimestampFormat: format}
+		customStr, _ := customFormatter.Format(WithField("test", "test"))
+		timeStart := bytes.Index(customStr, ([]byte)("time="))
+		timeEnd := bytes.Index(customStr, ([]byte)("level="))
+		timeStr := customStr[timeStart+5+len("\"") : timeEnd-1-len("\"")]
+		if format == "" {
+			format = time.RFC3339
+		}
+		_, e := time.Parse(format, (string)(timeStr))
+		if e != nil {
+			t.Errorf("time string \"%s\" did not match provided time format \"%s\": %s", timeStr, format, e)
+		}
+	}
+
+	checkTimeStr("2006-01-02T15:04:05.000000000Z07:00")
+	checkTimeStr("Mon Jan _2 15:04:05 2006")
+	checkTimeStr("")
+}
+
+func TestDisableLevelTruncation(t *testing.T) {
+	entry := &Entry{
+		Time:    time.Now(),
+		Message: "testing",
+	}
+	keys := []string{}
+	timestampFormat := "Mon Jan 2 15:04:05 -0700 MST 2006"
+	checkDisableTruncation := func(disabled bool, level Level) {
+		tf := &TextFormatter{DisableLevelTruncation: disabled}
+		var b bytes.Buffer
+		entry.Level = level
+		tf.printColored(&b, entry, keys, timestampFormat)
+		logLine := (&b).String()
+		if disabled {
+			expected := strings.ToUpper(level.String())
+			if !strings.Contains(logLine, expected) {
+				t.Errorf("level string expected to be %s when truncation disabled", expected)
+			}
+		} else {
+			expected := strings.ToUpper(level.String())
+			if len(level.String()) > 4 {
+				if strings.Contains(logLine, expected) {
+					t.Errorf("level string %s expected to be truncated to %s when truncation is enabled", expected, expected[0:4])
+				}
+			} else {
+				if !strings.Contains(logLine, expected) {
+					t.Errorf("level string expected to be %s when truncation is enabled and level string is below truncation threshold", expected)
+				}
+			}
+		}
+	}
+
+	checkDisableTruncation(true, DebugLevel)
+	checkDisableTruncation(true, InfoLevel)
+	checkDisableTruncation(false, ErrorLevel)
+	checkDisableTruncation(false, InfoLevel)
+}
+
+func TestDisableTimestampWithColoredOutput(t *testing.T) {
+	tf := &TextFormatter{DisableTimestamp: true, ForceColors: true}
+
+	b, _ := tf.Format(WithField("test", "test"))
+	if strings.Contains(string(b), "[0000]") {
+		t.Error("timestamp not expected when DisableTimestamp is true")
+	}
+}
+
+func TestNewlineBehavior(t *testing.T) {
+	tf := &TextFormatter{ForceColors: true}
+
+	// Ensure a single new line is removed as per stdlib log
+	e := NewEntry(StandardLogger())
+	e.Message = "test message\n"
+	b, _ := tf.Format(e)
+	if bytes.Contains(b, []byte("test message\n")) {
+		t.Error("first newline at end of Entry.Message resulted in unexpected 2 newlines in output. Expected newline to be removed.")
+	}
+
+	// Ensure a double new line is reduced to a single new line
+	e = NewEntry(StandardLogger())
+	e.Message = "test message\n\n"
+	b, _ = tf.Format(e)
+	if bytes.Contains(b, []byte("test message\n\n")) {
+		t.Error("Double newline at end of Entry.Message resulted in unexpected 2 newlines in output. Expected single newline")
+	}
+	if !bytes.Contains(b, []byte("test message\n")) {
+		t.Error("Double newline at end of Entry.Message did not result in a single newline after formatting")
+	}
+}
+
+func TestTextFormatterFieldMap(t *testing.T) {
+	formatter := &TextFormatter{
+		DisableColors: true,
+		FieldMap: FieldMap{
+			FieldKeyMsg:   "message",
+			FieldKeyLevel: "somelevel",
+			FieldKeyTime:  "timeywimey",
+		},
+	}
+
+	entry := &Entry{
+		Message: "oh hi",
+		Level:   WarnLevel,
+		Time:    time.Date(1981, time.February, 24, 4, 28, 3, 100, time.UTC),
+		Data: Fields{
+			"field1":     "f1",
+			"message":    "messagefield",
+			"somelevel":  "levelfield",
+			"timeywimey": "timeywimeyfield",
+		},
+	}
+
+	b, err := formatter.Format(entry)
+	if err != nil {
+		t.Fatal("Unable to format entry: ", err)
+	}
+
+	assert.Equal(t,
+		`timeywimey="1981-02-24T04:28:03Z" `+
+			`somelevel=warning `+
+			`message="oh hi" `+
+			`field1=f1 `+
+			`fields.message=messagefield `+
+			`fields.somelevel=levelfield `+
+			`fields.timeywimey=timeywimeyfield`+"\n",
+		string(b),
+		"Formatted output doesn't respect FieldMap")
+}
+
+func TestTextFormatterIsColored(t *testing.T) {
+	params := []struct {
+		name               string
+		expectedResult     bool
+		isTerminal         bool
+		disableColor       bool
+		forceColor         bool
+		envColor           bool
+		clicolorIsSet      bool
+		clicolorForceIsSet bool
+		clicolorVal        string
+		clicolorForceVal   string
+	}{
+		// Default values
+		{
+			name:               "testcase1",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           false,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: false,
+		},
+		// Output on terminal
+		{
+			name:               "testcase2",
+			expectedResult:     true,
+			isTerminal:         true,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           false,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: false,
+		},
+		// Output on terminal with color disabled
+		{
+			name:               "testcase3",
+			expectedResult:     false,
+			isTerminal:         true,
+			disableColor:       true,
+			forceColor:         false,
+			envColor:           false,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: false,
+		},
+		// Output not on terminal with color disabled
+		{
+			name:               "testcase4",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       true,
+			forceColor:         false,
+			envColor:           false,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: false,
+		},
+		// Output not on terminal with color forced
+		{
+			name:               "testcase5",
+			expectedResult:     true,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         true,
+			envColor:           false,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: false,
+		},
+		// Output on terminal with clicolor set to "0"
+		{
+			name:               "testcase6",
+			expectedResult:     false,
+			isTerminal:         true,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "0",
+		},
+		// Output on terminal with clicolor set to "1"
+		{
+			name:               "testcase7",
+			expectedResult:     true,
+			isTerminal:         true,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "1",
+		},
+		// Output not on terminal with clicolor set to "0"
+		{
+			name:               "testcase8",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "0",
+		},
+		// Output not on terminal with clicolor set to "1"
+		{
+			name:               "testcase9",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "1",
+		},
+		// Output not on terminal with clicolor set to "1" and force color
+		{
+			name:               "testcase10",
+			expectedResult:     true,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         true,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "1",
+		},
+		// Output not on terminal with clicolor set to "0" and force color
+		{
+			name:               "testcase11",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         true,
+			envColor:           true,
+			clicolorIsSet:      true,
+			clicolorForceIsSet: false,
+			clicolorVal:        "0",
+		},
+		// Output not on terminal with clicolor_force set to "1"
+		{
+			name:               "testcase12",
+			expectedResult:     true,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: true,
+			clicolorForceVal:   "1",
+		},
+		// Output not on terminal with clicolor_force set to "0"
+		{
+			name:               "testcase13",
+			expectedResult:     false,
+			isTerminal:         false,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: true,
+			clicolorForceVal:   "0",
+		},
+		// Output on terminal with clicolor_force set to "0"
+		{
+			name:               "testcase14",
+			expectedResult:     false,
+			isTerminal:         true,
+			disableColor:       false,
+			forceColor:         false,
+			envColor:           true,
+			clicolorIsSet:      false,
+			clicolorForceIsSet: true,
+			clicolorForceVal:   "0",
+		},
+	}
+
+	cleanenv := func() {
+		os.Unsetenv("CLICOLOR")
+		os.Unsetenv("CLICOLOR_FORCE")
+	}
+
+	defer cleanenv()
+
+	for _, val := range params {
+		t.Run("textformatter_"+val.name, func(subT *testing.T) {
+			tf := TextFormatter{
+				isTerminal:                val.isTerminal,
+				DisableColors:             val.disableColor,
+				ForceColors:               val.forceColor,
+				EnvironmentOverrideColors: val.envColor,
+			}
+			cleanenv()
+			if val.clicolorIsSet {
+				os.Setenv("CLICOLOR", val.clicolorVal)
+			}
+			if val.clicolorForceIsSet {
+				os.Setenv("CLICOLOR_FORCE", val.clicolorForceVal)
+			}
+			res := tf.isColored()
+			assert.Equal(subT, val.expectedResult, res)
+		})
+	}
+}
+
+func TestCustomSorting(t *testing.T) {
+	formatter := &TextFormatter{
+		DisableColors: true,
+		SortingFunc: func(keys []string) {
+			sort.Slice(keys, func(i, j int) bool {
+				if keys[j] == "prefix" {
+					return false
+				}
+				if keys[i] == "prefix" {
+					return true
+				}
+				return strings.Compare(keys[i], keys[j]) == -1
+			})
+		},
+	}
+
+	entry := &Entry{
+		Message: "Testing custom sort function",
+		Time:    time.Now(),
+		Level:   InfoLevel,
+		Data: Fields{
+			"test":      "testvalue",
+			"prefix":    "the application prefix",
+			"blablabla": "blablabla",
+		},
+	}
+	b, err := formatter.Format(entry)
+	require.NoError(t, err)
+	require.True(t, strings.HasPrefix(string(b), "prefix="), "format output is %q", string(b))
+}

vendor/github.com/sirupsen/logrus/writer.go

@@ -0,0 +1,64 @@
+package logrus
+
+import (
+	"bufio"
+	"io"
+	"runtime"
+)
+
+func (logger *Logger) Writer() *io.PipeWriter {
+	return logger.WriterLevel(InfoLevel)
+}
+
+func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
+	return NewEntry(logger).WriterLevel(level)
+}
+
+func (entry *Entry) Writer() *io.PipeWriter {
+	return entry.WriterLevel(InfoLevel)
+}
+
+func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
+	reader, writer := io.Pipe()
+
+	var printFunc func(args ...interface{})
+
+	switch level {
+	case TraceLevel:
+		printFunc = entry.Trace
+	case DebugLevel:
+		printFunc = entry.Debug
+	case InfoLevel:
+		printFunc = entry.Info
+	case WarnLevel:
+		printFunc = entry.Warn
+	case ErrorLevel:
+		printFunc = entry.Error
+	case FatalLevel:
+		printFunc = entry.Fatal
+	case PanicLevel:
+		printFunc = entry.Panic
+	default:
+		printFunc = entry.Print
+	}
+
+	go entry.writerScanner(reader, printFunc)
+	runtime.SetFinalizer(writer, writerFinalizer)
+
+	return writer
+}
+
+func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
+	scanner := bufio.NewScanner(reader)
+	for scanner.Scan() {
+		printFunc(scanner.Text())
+	}
+	if err := scanner.Err(); err != nil {
+		entry.Errorf("Error while reading from Writer: %s", err)
+	}
+	reader.Close()
+}
+
+func writerFinalizer(writer *io.PipeWriter) {
+	writer.Close()
+}