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use Sup deployment tool to deploy to staging

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This commit is contained in:
Taka Goto 2018-09-16 22:44:58 -05:00
parent a6cf173fe7
commit acad2cc30d
54 changed files with 5984 additions and 20 deletions
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111
Gopkg.lock generated
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@ -3,12 +3,14 @@
[[projects]]
branch = "master"
digest = "1:c5e006ec5f6460f05964be0a9d34a42e3ad25bbc2564a289d7b4f6f2290c76e5"
name = "github.com/aristanetworks/goarista"
packages = ["monotime"]
revision = "ff33da284e760fcdb03c33d37a719e5ed30ba844"
[[projects]]
branch = "master"
digest = "1:735be9b1e9daa0f731c20fbd2f0d4d0d3efbebe674f415f78b72c19defc07fa1"
name = "github.com/btcsuite/btcd"
packages = ["btcec"]
revision = "cff30e1d23fc9e800b2b5b4b41ef1817dda07e9f"
@ -20,6 +22,7 @@
version = "v1.7"
[[projects]]
digest = "1:28913042a7cf2d6c6957eb9865b06790966772ce47e1a844a3cd5a14d18785b7"
name = "github.com/ethereum/go-ethereum"
packages = [
".",
@ -50,20 +53,24 @@
"params",
"rlp",
"rpc",
"trie"
"trie",
]
revision = "89451f7c382ad2185987ee369f16416f89c28a7d"
version = "v1.8.15"
[[projects]]
digest = "1:eb53021a8aa3f599d29c7102e65026242bdedce998a54837dc67f14b6a97c5fd"
name = "github.com/fsnotify/fsnotify"
packages = ["."]
pruneopts = ""
revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
version = "v1.4.7"
[[projects]]
digest = "1:9ca737b471693542351e112c9e86be9bf7385e42256893a09ecb2a98e2036f74"
name = "github.com/go-stack/stack"
packages = ["."]
<<<<<<< HEAD
revision = "2fee6af1a9795aafbe0253a0cfbdf668e1fb8a9a"
version = "v1.8.0"
@ -75,6 +82,7 @@
[[projects]]
branch = "master"
digest = "1:09307dfb1aa3f49a2bf869dcfa4c6c06ecd3c207221bd1c1a1141f0e51f209eb"
name = "github.com/golang/snappy"
packages = ["."]
revision = "2e65f85255dbc3072edf28d6b5b8efc472979f5a"
@ -97,7 +105,7 @@
"hcl/token",
"json/parser",
"json/scanner",
"json/token"
"json/token",
]
revision = "8cb6e5b959231cc1119e43259c4a608f9c51a241"
version = "v1.0.0"
@ -116,6 +124,7 @@
[[projects]]
branch = "master"
digest = "1:b5ef0f034b2eda02c19c2cfcccc9754b372c4e04fa593972fbd8e3d9813d8d98"
name = "github.com/huin/goupnp"
packages = [
".",
@ -124,28 +133,33 @@
"httpu",
"scpd",
"soap",
"ssdp"
"ssdp",
]
revision = "1395d1447324cbea88d249fbfcfd70ea878fdfca"
[[projects]]
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pruneopts = ""
revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
version = "v1.0"
[[projects]]
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name = "github.com/jackpal/go-nat-pmp"
packages = ["."]
pruneopts = ""
revision = "c9cfead9f2a36ddf3daa40ba269aa7f4bbba6b62"
version = "v1.0.1"
[[projects]]
branch = "master"
digest = "1:fff68ae49ca708829c24a986fb0a044ee2b5aa44b65a0b57b1840fbb0a81f9a6"
name = "github.com/jmoiron/sqlx"
packages = [
".",
"reflectx"
"reflectx",
]
revision = "0dae4fefe7c0e190f7b5a78dac28a1c82cc8d849"
@ -153,12 +167,13 @@
name = "github.com/lib/pq"
packages = [
".",
"oid"
"oid",
]
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[[projects]]
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name = "github.com/magiconair/properties"
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revision = "c2353362d570a7bfa228149c62842019201cfb71"
@ -177,6 +192,7 @@
version = "v1.0.0"
[[projects]]
digest = "1:32b27072cd55bd2fb7244de0425943d125da6a552ae2b6517cdd965a662baf18"
name = "github.com/onsi/ginkgo"
packages = [
".",
@ -196,12 +212,13 @@
"reporters/stenographer",
"reporters/stenographer/support/go-colorable",
"reporters/stenographer/support/go-isatty",
"types"
"types",
]
revision = "3774a09d95489ccaa16032e0770d08ea77ba6184"
version = "v1.6.0"
[[projects]]
digest = "1:a4e59d0b2821c983b58c317f141cd77df20570979632da8a7a352e5d12698de7"
name = "github.com/onsi/gomega"
packages = [
".",
@ -216,57 +233,97 @@
"matchers/support/goraph/edge",
"matchers/support/goraph/node",
"matchers/support/goraph/util",
"types"
"types",
]
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version = "v1.4.2"
[[projects]]
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name = "github.com/pborman/uuid"
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revision = "adf5a7427709b9deb95d29d3fa8a2bf9cfd388f1"
version = "v1.2"
[[projects]]
digest = "1:d60cfeee185019d4fcd35e8c89c83aff576e4723b6100300bf67b05be961388f"
name = "github.com/pelletier/go-toml"
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[[projects]]
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pruneopts = ""
revision = "bb6d471dc95d4fe11e432687f8b70ff496cf3136"
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[[projects]]
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[[projects]]
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name = "github.com/pressly/sup"
packages = [
".",
"cmd/sup",
]
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version = "v0.5.3"
[[projects]]
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packages = ["."]
<<<<<<< HEAD
revision = "0f065fa99b48b842c3fd3e2c8b194c6f2b69f6b8"
version = "v0.9.1"
=======
pruneopts = ""
revision = "52ae50d8490436622a8941bd70c3dbe0acdd4bbf"
version = "v0.9.0"
>>>>>>> use Sup deployment tool to deploy to staging
[[projects]]
digest = "1:bfc8db90e2676a2fc0d742a536f376044a9b74f2745b2c60d339eb06c6c6988a"
name = "github.com/rs/cors"
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[[projects]]
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packages = [
".",
"mem"
"mem",
]
<<<<<<< HEAD
revision = "d40851caa0d747393da1ffb28f7f9d8b4eeffebd"
version = "v1.1.2"
=======
pruneopts = ""
revision = "bb8f1927f2a9d3ab41c9340aa034f6b803f4359c"
version = "v1.0.2"
>>>>>>> use Sup deployment tool to deploy to staging
[[projects]]
digest = "1:6ff9b74bfea2625f805edec59395dc37e4a06458dd3c14e3372337e3d35a2ed6"
name = "github.com/spf13/cast"
packages = ["."]
revision = "8965335b8c7107321228e3e3702cab9832751bac"
version = "v1.2.0"
[[projects]]
digest = "1:2208a80fc3259291e43b30f42f844d18f4218036dff510f42c653ec9890d460a"
name = "github.com/spf13/cobra"
packages = ["."]
revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
@ -279,12 +336,14 @@
version = "v1.0.0"
[[projects]]
digest = "1:261bc565833ef4f02121450d74eb88d5ae4bd74bfe5d0e862cddb8550ec35000"
name = "github.com/spf13/pflag"
packages = ["."]
revision = "9a97c102cda95a86cec2345a6f09f55a939babf5"
version = "v1.0.2"
[[projects]]
digest = "1:59354ad53dfe6ed1b941844cb029cd37c0377598eec3a0d49c03aee2375ef9c4"
name = "github.com/spf13/viper"
packages = ["."]
revision = "8fb642006536c8d3760c99d4fa2389f5e2205631"
@ -292,6 +351,7 @@
[[projects]]
branch = "master"
digest = "1:f87eb23fc0c2b143947616f754533344626637d3ae1b03ba077136ccb17de3f2"
name = "github.com/syndtr/goleveldb"
packages = [
"leveldb",
@ -305,20 +365,27 @@
"leveldb/opt",
"leveldb/storage",
"leveldb/table",
"leveldb/util"
"leveldb/util",
]
revision = "ae2bd5eed72d46b28834ec3f60db3a3ebedd8dbd"
[[projects]]
digest = "1:cae65c1f3471b1f456a9d8a160440f4824ad50c718a15da4144490fbc3b12e49"
name = "github.com/tinylib/msgp"
packages = ["msgp"]
pruneopts = ""
revision = "b2b6a672cf1e5b90748f79b8b81fc8c5cf0571a1"
version = "1.0.2"
[[projects]]
branch = "master"
digest = "1:450f85e389d9cbd8265299827a2a062b1b6aee8d4c7b78d849d913a6eb405908"
name = "golang.org/x/crypto"
packages = [
"curve25519",
"ed25519",
"ed25519/internal/edwards25519",
"internal/chacha20",
"pbkdf2",
"scrypt"
]
@ -326,28 +393,32 @@
[[projects]]
branch = "master"
digest = "1:950b672f2ee80d0fc4c95a15a976ba9ee573a6fb8ede8a777770b2230776367e"
name = "golang.org/x/net"
packages = [
"context",
"html",
"html/atom",
"html/charset",
"websocket"
"websocket",
]
revision = "26e67e76b6c3f6ce91f7c52def5af501b4e0f3a2"
[[projects]]
branch = "master"
digest = "1:b2ea75de0ccb2db2ac79356407f8a4cd8f798fe15d41b381c00abf3ae8e55ed1"
name = "golang.org/x/sync"
packages = ["errgroup"]
pruneopts = ""
revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
[[projects]]
branch = "master"
digest = "1:5da11ab130476e2736f32140f3c1aed2a3a96e9ba8963711a7d38db783d042bd"
name = "golang.org/x/sys"
packages = [
"unix",
"windows"
"windows",
]
revision = "d0be0721c37eeb5299f245a996a483160fc36940"
@ -373,28 +444,30 @@
"runes",
"transform",
"unicode/cldr",
"unicode/norm"
"unicode/norm",
]
revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
version = "v0.3.0"
[[projects]]
branch = "master"
digest = "1:5245bbf30a228b22cb61683ba5ad9641b98e0f81a9c4918394f49b40f6aa80f7"
name = "golang.org/x/tools"
packages = [
"go/ast/astutil",
"imports",
"internal/fastwalk"
"internal/fastwalk",
]
revision = "677d2ff680c188ddb7dcd2bfa6bc7d3f2f2f75b2"
[[projects]]
digest = "1:978b63089734495a83968fcdef711693500c72adfa3eaa1f1a2cc3d881dc4706"
name = "gopkg.in/DataDog/dd-trace-go.v1"
packages = [
"ddtrace",
"ddtrace/ext",
"ddtrace/internal",
"ddtrace/tracer"
"ddtrace/tracer",
]
revision = "bcd20367df871708a36549e7fe36183ee5b4fc55"
version = "v1.3.0"
@ -408,14 +481,18 @@
[[projects]]
branch = "v2"
digest = "1:a585c075875ab9c344f7840a927f09f3285563f7318e761a1d61d642316f2217"
name = "gopkg.in/karalabe/cookiejar.v2"
packages = ["collections/prque"]
pruneopts = ""
revision = "8dcd6a7f4951f6ff3ee9cbb919a06d8925822e57"
[[projects]]
branch = "v2"
digest = "1:4f830ee018eb8c56d0def653ad7c9a1d2a053f0cef2ac6b2200f73b98fa6a681"
name = "gopkg.in/natefinch/npipe.v2"
packages = ["."]
pruneopts = ""
revision = "c1b8fa8bdccecb0b8db834ee0b92fdbcfa606dd6"
[[projects]]

4
Gopkg.toml
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@ -44,3 +44,7 @@
[[constraint]]
name = "github.com/ethereum/go-ethereum"
version = "1.8.15"
[[constraint]]
name = "github.com/pressly/sup"
version = "0.5.3"

5
README.md
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@ -119,3 +119,8 @@ If you have full rinkeby chaindata you can move it to `rinkeby_vulcanizedb_geth_
## Running the Tests
- `make test`
- Note: requires Ganache chain setup and seeded with `flip-kick.js` and `frob.js` (in that order)
## Deploying
1. you'll need to make sure you have ssh agent running and your ssh key added to it. instructions [here](https://developer.github.com/v3/guides/using-ssh-agent-forwarding/#your-key-must-be-available-to-ssh-agent)
1. `go get -u github.com/pressly/sup/cmd/sup`
1. `sup staging deploy`

53
Supfile Normal file
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@ -0,0 +1,53 @@
---
version: 0.5
networks:
staging:
env:
VDB_PATH: /root/go_projects/src/github.com/8thlight/vulcanizedb
VDB_PG_USER: vulcanize
VDB_PG_PW: vulcanize
hosts:
- root@147.75.96.51
targets:
deploy:
- remove
- transfer
- migrate
- buildPostgraphile
- buildVDB
- lightSync
- postgraphile
commands:
remove:
desc: remove old vulcanizedb
run: rm -rf $VDB_PATH && rm -rf /usr/local/vulcanizedb
transfer:
desc: transfer build to remote server
local: rsync -r . root@147.75.96.51:$VDB_PATH
migrate:
desc: run migration
run: >
cd $VDB_PATH &&
/root/go_projects/bin/migrate -database postgresql://$VDB_PG_USER:$VDB_PG_PW@127.0.0.1:5432/vulcanize_public?sslmode=disable -path ./db/migrations up
buildPostgraphile:
desc: build postgraphile express app
run: >
cd $VDB_PATH/postgraphile &&
yarn install &&
tsc
buildVDB:
desc: build vulcanizedb
run: >
cd $VDB_PATH &&
GOPATH=$HOME/go_projects go get &&
GOPATH=$HOME/go_projects go build &&
cp -r . /usr/local/vulcanizedb
lightSync:
desc: start vdb light sync
run: systemctl daemon-reload && sudo systemctl restart vulcanizedb.service
postgraphile:
desc: start postgraphile
run: systemctl daemon-reload && sudo systemctl restart postgraphile.service

4
environments/staging.toml
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@ -1,12 +1,12 @@
[database]
name = "vulcanize_public"
hostname = "host.docker.internal"
hostname = "localhost"
user = "vulcanize"
password = "vulcanize"
port = 5432
[client]
ipcPath = "/mnt/geth.ipc"
ipcPath = "https://mainnet.infura.io/J5Vd2fRtGsw0zZ0Ov3BL"
[datadog]
name = "maker_vdb_staging"

9
vendor/github.com/goware/prefixer/.travis.yml generated vendored Normal file
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@ -0,0 +1,9 @@
language: go
go:
- 1.4
- tip
script:
- go test
- cd example && go build -o prefix && echo -e "1\n2\n3\n" | ./prefix | grep "> "

22
vendor/github.com/goware/prefixer/LICENSE generated vendored Normal file
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@ -0,0 +1,22 @@
MIT License
Copyright (c) 2016 Pressly Inc. www.pressly.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.

69
vendor/github.com/goware/prefixer/README.md generated vendored Normal file
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@ -0,0 +1,69 @@
# Prefixer
[Golang](http://golang.org/)'s [io.Reader](http://golang.org/pkg/io/#Reader) wrapper prepending every line with a given string.
[![GoDoc](https://godoc.org/github.com/goware/prefixer?status.png)](https://godoc.org/github.com/goware/prefixer)
[![Travis](https://travis-ci.org/goware/prefixer.svg?branch=master)](https://travis-ci.org/goware/prefixer)
## Use cases
1. Logger that prefixes every line with a timestamp etc.
```bash
16:54:49 My awesome server | Creating etcd client pointing to http://localhost:4001
16:54:49 My awesome server | Listening on http://localhost:8080
16:54:49 My awesome server | [restful/swagger] listing is available at 127.0.0.1:8080/swaggerapi
```
2. SSH multiplexer prepending output from multiple servers with a hostname
```bash
host1.example.com | SUCCESS
host2.example.com | SUCCESS
host3.example.com | -bash: cd: workdir: No such file or directory
host4.example.com | SUCCESS
```
3. Create an email reply (`"> "` prefix) from any text easily.
```bash
$ ./prefix
Dear John,
did you know that https://github.com/goware/prefixer is a golang pkg
that prefixes every line with a given string and accepts any io.Reader?
Cheers,
- Jane
^D
> Dear John,
> did you know that https://github.com/goware/prefixer is a golang pkg
> that prefixes every line with a given string and accepts any io.Reader?
>
> Cheers,
> - Jane
```
## Example
See the ["Prefix Line Reader" example](./example).
```go
package main
import (
"io/ioutil"
"os"
"github.com/goware/prefixer"
)
func main() {
// Prefixer accepts anything that implements io.Reader interface
prefixReader := prefixer.New(os.Stdin, "> ")
// Read all prefixed lines from STDIN into a buffer
buffer, _ := ioutil.ReadAll(prefixReader)
// Write buffer to STDOUT
os.Stdout.Write(buffer)
}
```
## License
Prefixer is licensed under the [MIT License](./LICENSE).

3
vendor/github.com/goware/prefixer/doc.go generated vendored Normal file
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@ -0,0 +1,3 @@
// Package prefixer implements io.Reader wrapper prepending
// every line with a given string.
package prefixer

32
vendor/github.com/goware/prefixer/example/README.md generated vendored Normal file
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@ -0,0 +1,32 @@
# Prefixer example
See [prefix.go](./prefix.go).
## Build "prefix" binary
```bash
$ git clone https://github.com/goware/prefixer.git
$ cd prefixer/example
$ go build -o prefix
```
## Usage
Create an email reply (`"> "` prefix) from any text easily:
```bash
$ ./prefix
Dear John,
did you know that https://github.com/goware/prefixer is a golang pkg
that prefixes every line with a given string and accepts any io.Reader?
Cheers,
- Jane
^D
> Dear John,
> did you know that https://github.com/goware/prefixer is a golang pkg
> that prefixes every line with a given string and accepts any io.Reader?
>
> Cheers,
> - Jane
```

19
vendor/github.com/goware/prefixer/example/prefix.go generated vendored Normal file
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@ -0,0 +1,19 @@
package main
import (
"io/ioutil"
"os"
"github.com/goware/prefixer"
)
func main() {
// Prefixer accepts anything that implements io.Reader interface
prefixReader := prefixer.New(os.Stdin, "> ")
// Read all prefixed lines from STDIN into a buffer
buffer, _ := ioutil.ReadAll(prefixReader)
// Write buffer to STDOUT
os.Stdout.Write(buffer)
}

123
vendor/github.com/goware/prefixer/prefixer.go generated vendored Normal file
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@ -0,0 +1,123 @@
package prefixer
import (
"bufio"
"io"
)
// Prefixer implements io.Reader and io.WriterTo. It reads
// data from the underlying reader and prepends every line
// with a given string.
type Prefixer struct {
reader *bufio.Reader
prefix []byte
unread []byte
eof bool
}
// New creates a new instance of Prefixer.
func New(r io.Reader, prefix string) *Prefixer {
return &Prefixer{
reader: bufio.NewReader(r),
prefix: []byte(prefix),
}
}
// Read implements io.Reader. It reads data into p from the
// underlying reader and prepends every line with a prefix.
// It does not block if no data is available yet.
// It returns the number of bytes read into p.
func (r *Prefixer) Read(p []byte) (n int, err error) {
for {
// Write unread data from previous read.
if len(r.unread) > 0 {
m := copy(p[n:], r.unread)
n += m
r.unread = r.unread[m:]
if len(r.unread) > 0 {
return n, nil
}
}
// The underlying Reader already returned EOF, do not read again.
if r.eof {
return n, io.EOF
}
// Read new line, including delim.
r.unread, err = r.reader.ReadBytes('\n')
if err == io.EOF {
r.eof = true
}
// No new data, do not block.
if len(r.unread) == 0 {
return n, err
}
// Some new data, prepend prefix.
// TODO: We could write the prefix to r.unread buffer just once
// and re-use it instead of prepending every time.
r.unread = append(r.prefix, r.unread...)
if err != nil {
if err == io.EOF && len(r.unread) > 0 {
// The underlying Reader already returned EOF, but we still
// have some unread data to send, thus clear the error.
return n, nil
}
return n, err
}
}
panic("unreachable")
}
func (r *Prefixer) WriteTo(w io.Writer) (n int64, err error) {
for {
// Write unread data from previous read.
if len(r.unread) > 0 {
m, err := w.Write(r.unread)
n += int64(m)
if err != nil {
return n, err
}
r.unread = r.unread[m:]
if len(r.unread) > 0 {
return n, nil
}
}
// The underlying Reader already returned EOF, do not read again.
if r.eof {
return n, io.EOF
}
// Read new line, including delim.
r.unread, err = r.reader.ReadBytes('\n')
if err == io.EOF {
r.eof = true
}
// No new data, do not block.
if len(r.unread) == 0 {
return n, err
}
// Some new data, prepend prefix.
// TODO: We could write the prefix to r.unread buffer just once
// and re-use it instead of prepending every time.
r.unread = append(r.prefix, r.unread...)
if err != nil {
if err == io.EOF && len(r.unread) > 0 {
// The underlying Reader already returned EOF, but we still
// have some unread data to send, thus clear the error.
return n, nil
}
return n, err
}
}
panic("unreachable")
}

57
vendor/github.com/goware/prefixer/prefixer_test.go generated vendored Normal file
View File

@ -0,0 +1,57 @@
package prefixer_test
import (
"bytes"
"io/ioutil"
"strings"
"testing"
"github.com/goware/prefixer"
)
var prefix = "Some prefix | "
func TestPrefixer(t *testing.T) {
testStrings := []struct {
in string
out string
}{
{
in: "",
out: "",
},
{
in: "x",
out: prefix + "x",
},
{
in: "\n",
out: prefix + "\n",
},
{
in: "Hello World!\n",
out: prefix + "Hello World!\n",
},
{
in: "Multiline\ntext",
out: prefix + "Multiline\n" + prefix + "text",
},
{
in: "Multiline\ntext\nis\nawesome\n",
out: prefix + "Multiline\n" + prefix + "text\n" + prefix + "is\n" + prefix + "awesome\n",
},
}
for _, tt := range testStrings {
r := prefixer.New(strings.NewReader(tt.in), prefix)
buf, err := ioutil.ReadAll(r)
if err != nil {
t.Errorf("Unexpected eror %v", err)
}
out := []byte(tt.out)
if !bytes.Equal(buf, out) {
t.Errorf("\nExpected:\n\"%s\",\ngot:\n\"%s\"", tt.out, buf)
}
}
}

7
vendor/github.com/mikkeloscar/sshconfig/.travis.yml generated vendored Normal file
View File

@ -0,0 +1,7 @@
language: go
go:
- 1.x
before_install:
- go get github.com/mattn/goveralls
script:
- $HOME/gopath/bin/goveralls -service=travis-ci

674
vendor/github.com/mikkeloscar/sshconfig/LICENSE generated vendored Normal file
View File

@ -0,0 +1,674 @@
GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
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Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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# OpenSSH config parser for golang
[![Build Status](https://travis-ci.org/mikkeloscar/sshconfig.svg?branch=master)](https://travis-ci.org/mikkeloscar/sshconfig)
[![GoDoc](https://godoc.org/github.com/mikkeloscar/sshconfig?status.svg)](https://godoc.org/github.com/mikkeloscar/sshconfig)
[![Go Report Card](https://goreportcard.com/badge/github.com/mikkeloscar/sshconfig)](https://goreportcard.com/report/github.com/mikkeloscar/sshconfig)
[![Coverage Status](https://coveralls.io/repos/github/mikkeloscar/sshconfig/badge.svg)](https://coveralls.io/github/mikkeloscar/sshconfig)
Parses the config usually found in `~/.ssh/config` or `/etc/ssh/ssh_config`.
Only `Host`, `HostName`, `User`, `Port`, `IdentityFile`, `HostKeyAlgorithms` and `ProxyCommand` is implemented at
this point.
[OpenSSH Reference.][openssh_man]
## Usage
Example usage
```go
package main
import (
"fmt"
"github.com/mikkeloscar/sshconfig"
)
func main() {
hosts, err := ParseSSHConfig("/path/to/ssh_config")
if err != nil {
fmt.Println(err)
}
for _, host := range hosts {
fmt.Printf("Hostname: %s", host.HostName)
}
}
```
## LICENSE
Copyright (C) 2016 Mikkel Oscar Lyderik Larsen & Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
[openssh_man]: http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man5/ssh_config.5?query=ssh_config&sec=5

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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// based on the lexer from: src/pkg/text/template/parse/lex.go (golang source)
package sshconfig
import (
"fmt"
"strings"
"unicode"
"unicode/utf8"
)
// pos is a position in input being scanned
type pos int
type item struct {
typ itemType
pos pos
val string
}
func (i item) String() string {
switch {
case i.typ == itemEOF:
return "EOF"
case i.typ == itemError:
return i.val
case len(i.val) > 10:
return fmt.Sprintf("%.10q...", i.val)
}
return fmt.Sprintf("%q", i.val)
}
type itemType int
const (
itemError itemType = iota
itemEOF
itemValue
itemHost
itemHostValue
itemHostName
itemUser
itemPort
itemProxyCommand
itemHostKeyAlgorithms
itemIdentityFile
)
// variables
var variables = map[string]itemType{
"host": itemHost,
"hostname": itemHostName,
"user": itemUser,
"port": itemPort,
"proxycommand": itemProxyCommand,
"hostkeyalgorithms": itemHostKeyAlgorithms,
"identityfile": itemIdentityFile,
}
const eof = -1
// stateFn represents the state of the scanner as a function that returns the next state
type stateFn func(*lexer) stateFn
// lexer holds the state of the scanner
type lexer struct {
input string
state stateFn
pos pos
start pos
width pos
lastPos pos
items chan item // channel of scanned items
}
// next returns the next rune in the input
func (l *lexer) next() rune {
if int(l.pos) >= len(l.input) {
l.width = 0
return eof
}
r, w := utf8.DecodeRuneInString(l.input[l.pos:])
l.width = pos(w)
l.pos += l.width
return r
}
// peek returns but does not consume the next rune in the input
func (l *lexer) peek() rune {
r := l.next()
l.backup()
return r
}
// backup steps back one rune. Can only be called once per call of next
func (l *lexer) backup() {
l.pos -= l.width
}
// emit passes an item back to the client
func (l *lexer) emit(t itemType) {
l.items <- item{t, l.start, l.input[l.start:l.pos]}
l.start = l.pos
}
// ignore skips over the pending input before this point
func (l *lexer) ignore() {
l.start = l.pos
}
// errorf returns an error token and terminates the scan by passing
// back a nil pointer that will be the next state, terminating l.nextItem.
func (l *lexer) errorf(format string, args ...interface{}) stateFn {
l.items <- item{itemError, l.start, fmt.Sprintf(format, args...)}
return nil
}
// nextItem returns the next item from the input.
func (l *lexer) nextItem() item {
item := <-l.items
l.lastPos = item.pos
return item
}
func lex(input string) *lexer {
l := &lexer{
input: input,
items: make(chan item),
}
go l.run()
return l
}
func (l *lexer) run() {
for l.state = lexEnv; l.state != nil; {
l.state = l.state(l)
}
}
func lexEnv(l *lexer) stateFn {
switch r := l.next(); {
case r == eof:
l.emit(itemEOF)
return nil
case isAlphaNumeric(r):
return lexVariable
case r == '#':
return lexComment
case r == '\r':
l.ignore()
if l.next() != '\n' {
l.errorf("expected \\n")
return nil
}
l.ignore()
return lexEnv
case r == '\t' || r == ' ' || r == '\n':
l.ignore()
return lexEnv
default:
l.errorf("unable to parse character: %c", r)
return nil
}
}
func lexComment(l *lexer) stateFn {
for {
switch l.next() {
case '\r':
l.ignore()
if l.next() != '\n' {
l.errorf("expected \\n")
return nil
}
l.ignore()
return lexEnv
case '\n':
l.ignore()
return lexEnv
default:
l.ignore()
}
}
}
func lexVariable(l *lexer) stateFn {
for {
switch r := l.next(); {
case isAlphaNumeric(r):
// absorb
case r == ' ' || r == '=':
l.backup()
variable := strings.ToLower(l.input[l.start:l.pos])
if _, ok := variables[variable]; ok {
l.emit(variables[variable])
l.next()
l.ignore()
if variable == "host" {
return lexHostValue
}
return lexValue
}
return lexValue
default:
pattern := l.input[l.start:l.pos]
return l.errorf("invalid pattern: %#v", pattern)
}
}
}
func lexHostValue(l *lexer) stateFn {
for {
switch l.next() {
case ' ':
switch l.peek() {
case '\r':
if l.peek() != '\n' {
return l.errorf("expected \\n")
}
fallthrough
case '\n', eof:
break
default:
// more coming, wait
continue
}
l.emit(itemValue)
case '\r':
if l.peek() != '\n' {
return l.errorf("expected \\n")
}
fallthrough
case '\n':
l.backup()
l.emit(itemHostValue)
return lexEnv
case eof:
l.backup()
l.emit(itemHostValue)
l.next()
l.emit(itemEOF)
return nil
}
}
}
func lexValue(l *lexer) stateFn {
for {
switch l.next() {
case '\r':
if l.peek() != '\n' {
return l.errorf("expected \\n")
}
fallthrough
case '\n':
l.backup()
l.emit(itemValue)
return lexEnv
case eof:
l.backup()
l.emit(itemValue)
l.next()
l.emit(itemEOF)
return nil
}
}
}
// isAlphaNumeric reports whether r is an alphabetic or digit.
func isAlphaNumeric(r rune) bool {
return unicode.IsLetter(r) || unicode.IsDigit(r)
}

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package sshconfig
import (
"fmt"
"io/ioutil"
"strconv"
"strings"
)
// SSHHost defines a single host entry in a ssh config
type SSHHost struct {
Host []string
HostName string
User string
Port int
ProxyCommand string
HostKeyAlgorithms string
IdentityFile string
}
// MustParseSSHConfig must parse the SSH config given by path or it will panic
func MustParseSSHConfig(path string) []*SSHHost {
config, err := ParseSSHConfig(path)
if err != nil {
panic(err)
}
return config
}
// ParseSSHConfig parses a SSH config given by path.
func ParseSSHConfig(path string) ([]*SSHHost, error) {
// read config file
content, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
return parse(string(content))
}
// parses an openssh config file
func parse(input string) ([]*SSHHost, error) {
sshConfigs := []*SSHHost{}
var next item
var sshHost *SSHHost
lexer := lex(input)
Loop:
for {
token := lexer.nextItem()
if sshHost == nil && token.typ != itemHost {
return nil, fmt.Errorf("config variable before Host variable")
}
switch token.typ {
case itemHost:
if sshHost != nil {
sshConfigs = append(sshConfigs, sshHost)
}
sshHost = &SSHHost{Host: []string{}, Port: 22}
case itemHostValue:
sshHost.Host = strings.Split(token.val, " ")
case itemHostName:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
sshHost.HostName = next.val
case itemUser:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
sshHost.User = next.val
case itemPort:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
port, err := strconv.Atoi(next.val)
if err != nil {
return nil, err
}
sshHost.Port = port
case itemProxyCommand:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
sshHost.ProxyCommand = next.val
case itemHostKeyAlgorithms:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
sshHost.HostKeyAlgorithms = next.val
case itemIdentityFile:
next = lexer.nextItem()
if next.typ != itemValue {
return nil, fmt.Errorf(next.val)
}
sshHost.IdentityFile = next.val
case itemError:
return nil, fmt.Errorf("%s at pos %d", token.val, token.pos)
case itemEOF:
if sshHost != nil {
sshConfigs = append(sshConfigs, sshHost)
}
break Loop
default:
// continue onwards
}
}
return sshConfigs, nil
}

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package sshconfig
import (
"encoding/json"
"reflect"
"strings"
"testing"
)
// Test parsing
func TestParsing(t *testing.T) {
config := `Host google
HostName google.se
User goog
Port 2222
ProxyCommand ssh -q pluto nc saturn 22
HostKeyAlgorithms ssh-dss
# comment
IdentityFile ~/.ssh/company
Host face
HostName facebook.com
User mark
Port 22`
_, err := parse(config)
if err != nil {
t.Errorf("unable to parse config: %s", err.Error())
}
configCR := strings.Replace(`Host google
HostName google.se
User goog
Port 2222
ProxyCommand ssh -q pluto nc saturn 22
HostKeyAlgorithms ssh-dss
# comment
IdentityFile ~/.ssh/company
Host face
HostName facebook.com
User mark
Port 22`, "\n", "\r\n", -1)
_, err = parse(configCR)
if err != nil {
t.Errorf("unable to parse config: %s", err.Error())
}
}
func TestMultipleHost(t *testing.T) {
config := `Host google google2 aws
HostName google.se
User goog
Port 2222`
hosts, err := parse(config)
if err != nil {
t.Errorf("unable to parse config: %s", err.Error())
}
h := hosts[0]
if ok := reflect.DeepEqual([]string{"google", "google2", "aws"}, h.Host); !ok {
t.Error("unexpected host mismatch")
}
}
// TestTrailingSpace ensures the parser does not hang when attempting to parse
// a Host declaration with a trailing space after a pattern
func TestTrailingSpace(t *testing.T) {
// in the config below, the first line is "Host google \n"
config := `
Host googlespace
HostName google.com
`
parse(config)
}
func TestIgnoreKeyword(t *testing.T) {
config := `Host google
HostName google.se
User goog
Port 2222
ProxyCommand ssh -q pluto nc saturn 22
HostKeyAlgorithms ssh-dss
# comment
IdentityOnly yes
IdentityFile ~/.ssh/company
Host face
HostName facebook.com
User mark
Port 22`
expected := []*SSHHost{
{
Host: []string{"google"},
HostName: "google.se",
User: "goog",
Port: 2222,
HostKeyAlgorithms: "ssh-dss",
ProxyCommand: "ssh -q pluto nc saturn 22",
IdentityFile: "~/.ssh/company",
},
{
Host: []string{"face"},
User: "mark",
Port: 22,
HostName: "facebook.com",
HostKeyAlgorithms: "",
ProxyCommand: "",
IdentityFile: "",
},
}
actual, err := parse(config)
if err != nil {
t.Errorf("unexpected error parsing config: %s", err.Error())
}
compare(t, expected, actual)
}
func compare(t *testing.T, expected, actual []*SSHHost) {
for i, ac := range actual {
exMap := toMap(t, expected[i])
acMap := toMap(t, ac)
if ok := reflect.DeepEqual(exMap, acMap); !ok {
t.Errorf("unexpected parsed \n expected: %+v \n actual: %+v", exMap, acMap)
}
}
}
func toMap(t *testing.T, a *SSHHost) map[string]interface{} {
ab, err := json.Marshal(a)
if err != nil {
t.Errorf("marshaling expected %s", err)
}
var aMap map[string]interface{}
if err := json.Unmarshal(ab, &aMap); err != nil {
t.Errorf("unmarshaling expected %s", err)
}
return aMap
}

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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof

11
vendor/github.com/pkg/errors/.travis.yml generated vendored Normal file
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language: go
go_import_path: github.com/pkg/errors
go:
- 1.4.3
- 1.5.4
- 1.6.2
- 1.7.1
- tip
script:
- go test -v ./...

23
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Copyright (c) 2015, Dave Cheney <dave@cheney.net>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# errors [![Travis-CI](https://travis-ci.org/pkg/errors.svg)](https://travis-ci.org/pkg/errors) [![AppVeyor](https://ci.appveyor.com/api/projects/status/b98mptawhudj53ep/branch/master?svg=true)](https://ci.appveyor.com/project/davecheney/errors/branch/master) [![GoDoc](https://godoc.org/github.com/pkg/errors?status.svg)](http://godoc.org/github.com/pkg/errors) [![Report card](https://goreportcard.com/badge/github.com/pkg/errors)](https://goreportcard.com/report/github.com/pkg/errors)
Package errors provides simple error handling primitives.
`go get github.com/pkg/errors`
The traditional error handling idiom in Go is roughly akin to
```go
if err != nil {
return err
}
```
which applied recursively up the call stack results in error reports without context or debugging information. The errors package allows programmers to add context to the failure path in their code in a way that does not destroy the original value of the error.
## Adding context to an error
The errors.Wrap function returns a new error that adds context to the original error. For example
```go
_, err := ioutil.ReadAll(r)
if err != nil {
return errors.Wrap(err, "read failed")
}
```
## Retrieving the cause of an error
Using `errors.Wrap` constructs a stack of errors, adding context to the preceding error. Depending on the nature of the error it may be necessary to reverse the operation of errors.Wrap to retrieve the original error for inspection. Any error value which implements this interface can be inspected by `errors.Cause`.
```go
type causer interface {
Cause() error
}
```
`errors.Cause` will recursively retrieve the topmost error which does not implement `causer`, which is assumed to be the original cause. For example:
```go
switch err := errors.Cause(err).(type) {
case *MyError:
// handle specifically
default:
// unknown error
}
```
[Read the package documentation for more information](https://godoc.org/github.com/pkg/errors).
## Contributing
We welcome pull requests, bug fixes and issue reports. With that said, the bar for adding new symbols to this package is intentionally set high.
Before proposing a change, please discuss your change by raising an issue.
## Licence
BSD-2-Clause

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vendor/github.com/pkg/errors/appveyor.yml generated vendored Normal file
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version: build-{build}.{branch}
clone_folder: C:\gopath\src\github.com\pkg\errors
shallow_clone: true # for startup speed
environment:
GOPATH: C:\gopath
platform:
- x64
# http://www.appveyor.com/docs/installed-software
install:
# some helpful output for debugging builds
- go version
- go env
# pre-installed MinGW at C:\MinGW is 32bit only
# but MSYS2 at C:\msys64 has mingw64
- set PATH=C:\msys64\mingw64\bin;%PATH%
- gcc --version
- g++ --version
build_script:
- go install -v ./...
test_script:
- set PATH=C:\gopath\bin;%PATH%
- go test -v ./...
#artifacts:
# - path: '%GOPATH%\bin\*.exe'
deploy: off

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// +build go1.7
package errors
import (
"fmt"
"testing"
stderrors "errors"
)
func noErrors(at, depth int) error {
if at >= depth {
return stderrors.New("no error")
}
return noErrors(at+1, depth)
}
func yesErrors(at, depth int) error {
if at >= depth {
return New("ye error")
}
return yesErrors(at+1, depth)
}
func BenchmarkErrors(b *testing.B) {
var toperr error
type run struct {
stack int
std bool
}
runs := []run{
{10, false},
{10, true},
{100, false},
{100, true},
{1000, false},
{1000, true},
}
for _, r := range runs {
part := "pkg/errors"
if r.std {
part = "errors"
}
name := fmt.Sprintf("%s-stack-%d", part, r.stack)
b.Run(name, func(b *testing.B) {
var err error
f := yesErrors
if r.std {
f = noErrors
}
b.ReportAllocs()
for i := 0; i < b.N; i++ {
err = f(0, r.stack)
}
b.StopTimer()
toperr = err
})
}
}

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// Package errors provides simple error handling primitives.
//
// The traditional error handling idiom in Go is roughly akin to
//
// if err != nil {
// return err
// }
//
// which applied recursively up the call stack results in error reports
// without context or debugging information. The errors package allows
// programmers to add context to the failure path in their code in a way
// that does not destroy the original value of the error.
//
// Adding context to an error
//
// The errors.Wrap function returns a new error that adds context to the
// original error by recording a stack trace at the point Wrap is called,
// and the supplied message. For example
//
// _, err := ioutil.ReadAll(r)
// if err != nil {
// return errors.Wrap(err, "read failed")
// }
//
// If additional control is required the errors.WithStack and errors.WithMessage
// functions destructure errors.Wrap into its component operations of annotating
// an error with a stack trace and an a message, respectively.
//
// Retrieving the cause of an error
//
// Using errors.Wrap constructs a stack of errors, adding context to the
// preceding error. Depending on the nature of the error it may be necessary
// to reverse the operation of errors.Wrap to retrieve the original error
// for inspection. Any error value which implements this interface
//
// type causer interface {
// Cause() error
// }
//
// can be inspected by errors.Cause. errors.Cause will recursively retrieve
// the topmost error which does not implement causer, which is assumed to be
// the original cause. For example:
//
// switch err := errors.Cause(err).(type) {
// case *MyError:
// // handle specifically
// default:
// // unknown error
// }
//
// causer interface is not exported by this package, but is considered a part
// of stable public API.
//
// Formatted printing of errors
//
// All error values returned from this package implement fmt.Formatter and can
// be formatted by the fmt package. The following verbs are supported
//
// %s print the error. If the error has a Cause it will be
// printed recursively
// %v see %s
// %+v extended format. Each Frame of the error's StackTrace will
// be printed in detail.
//
// Retrieving the stack trace of an error or wrapper
//
// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are
// invoked. This information can be retrieved with the following interface.
//
// type stackTracer interface {
// StackTrace() errors.StackTrace
// }
//
// Where errors.StackTrace is defined as
//
// type StackTrace []Frame
//
// The Frame type represents a call site in the stack trace. Frame supports
// the fmt.Formatter interface that can be used for printing information about
// the stack trace of this error. For example:
//
// if err, ok := err.(stackTracer); ok {
// for _, f := range err.StackTrace() {
// fmt.Printf("%+s:%d", f)
// }
// }
//
// stackTracer interface is not exported by this package, but is considered a part
// of stable public API.
//
// See the documentation for Frame.Format for more details.
package errors
import (
"fmt"
"io"
)
// New returns an error with the supplied message.
// New also records the stack trace at the point it was called.
func New(message string) error {
return &fundamental{
msg: message,
stack: callers(),
}
}
// Errorf formats according to a format specifier and returns the string
// as a value that satisfies error.
// Errorf also records the stack trace at the point it was called.
func Errorf(format string, args ...interface{}) error {
return &fundamental{
msg: fmt.Sprintf(format, args...),
stack: callers(),
}
}
// fundamental is an error that has a message and a stack, but no caller.
type fundamental struct {
msg string
*stack
}
func (f *fundamental) Error() string { return f.msg }
func (f *fundamental) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
io.WriteString(s, f.msg)
f.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, f.msg)
case 'q':
fmt.Fprintf(s, "%q", f.msg)
}
}
// WithStack annotates err with a stack trace at the point WithStack was called.
// If err is nil, WithStack returns nil.
func WithStack(err error) error {
if err == nil {
return nil
}
return &withStack{
err,
callers(),
}
}
type withStack struct {
error
*stack
}
func (w *withStack) Cause() error { return w.error }
func (w *withStack) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v", w.Cause())
w.stack.Format(s, verb)
return
}
fallthrough
case 's':
io.WriteString(s, w.Error())
case 'q':
fmt.Fprintf(s, "%q", w.Error())
}
}
// Wrap returns an error annotating err with a stack trace
// at the point Wrap is called, and the supplied message.
// If err is nil, Wrap returns nil.
func Wrap(err error, message string) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: message,
}
return &withStack{
err,
callers(),
}
}
// Wrapf returns an error annotating err with a stack trace
// at the point Wrapf is call, and the format specifier.
// If err is nil, Wrapf returns nil.
func Wrapf(err error, format string, args ...interface{}) error {
if err == nil {
return nil
}
err = &withMessage{
cause: err,
msg: fmt.Sprintf(format, args...),
}
return &withStack{
err,
callers(),
}
}
// WithMessage annotates err with a new message.
// If err is nil, WithMessage returns nil.
func WithMessage(err error, message string) error {
if err == nil {
return nil
}
return &withMessage{
cause: err,
msg: message,
}
}
type withMessage struct {
cause error
msg string
}
func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() }
func (w *withMessage) Cause() error { return w.cause }
func (w *withMessage) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%+v\n", w.Cause())
io.WriteString(s, w.msg)
return
}
fallthrough
case 's', 'q':
io.WriteString(s, w.Error())
}
}
// Cause returns the underlying cause of the error, if possible.
// An error value has a cause if it implements the following
// interface:
//
// type causer interface {
// Cause() error
// }
//
// If the error does not implement Cause, the original error will
// be returned. If the error is nil, nil will be returned without further
// investigation.
func Cause(err error) error {
type causer interface {
Cause() error
}
for err != nil {
cause, ok := err.(causer)
if !ok {
break
}
err = cause.Cause()
}
return err
}

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vendor/github.com/pkg/errors/errors_test.go generated vendored Normal file
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@ -0,0 +1,226 @@
package errors
import (
"errors"
"fmt"
"io"
"reflect"
"testing"
)
func TestNew(t *testing.T) {
tests := []struct {
err string
want error
}{
{"", fmt.Errorf("")},
{"foo", fmt.Errorf("foo")},
{"foo", New("foo")},
{"string with format specifiers: %v", errors.New("string with format specifiers: %v")},
}
for _, tt := range tests {
got := New(tt.err)
if got.Error() != tt.want.Error() {
t.Errorf("New.Error(): got: %q, want %q", got, tt.want)
}
}
}
func TestWrapNil(t *testing.T) {
got := Wrap(nil, "no error")
if got != nil {
t.Errorf("Wrap(nil, \"no error\"): got %#v, expected nil", got)
}
}
func TestWrap(t *testing.T) {
tests := []struct {
err error
message string
want string
}{
{io.EOF, "read error", "read error: EOF"},
{Wrap(io.EOF, "read error"), "client error", "client error: read error: EOF"},
}
for _, tt := range tests {
got := Wrap(tt.err, tt.message).Error()
if got != tt.want {
t.Errorf("Wrap(%v, %q): got: %v, want %v", tt.err, tt.message, got, tt.want)
}
}
}
type nilError struct{}
func (nilError) Error() string { return "nil error" }
func TestCause(t *testing.T) {
x := New("error")
tests := []struct {
err error
want error
}{{
// nil error is nil
err: nil,
want: nil,
}, {
// explicit nil error is nil
err: (error)(nil),
want: nil,
}, {
// typed nil is nil
err: (*nilError)(nil),
want: (*nilError)(nil),
}, {
// uncaused error is unaffected
err: io.EOF,
want: io.EOF,
}, {
// caused error returns cause
err: Wrap(io.EOF, "ignored"),
want: io.EOF,
}, {
err: x, // return from errors.New
want: x,
}, {
WithMessage(nil, "whoops"),
nil,
}, {
WithMessage(io.EOF, "whoops"),
io.EOF,
}, {
WithStack(nil),
nil,
}, {
WithStack(io.EOF),
io.EOF,
}}
for i, tt := range tests {
got := Cause(tt.err)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("test %d: got %#v, want %#v", i+1, got, tt.want)
}
}
}
func TestWrapfNil(t *testing.T) {
got := Wrapf(nil, "no error")
if got != nil {
t.Errorf("Wrapf(nil, \"no error\"): got %#v, expected nil", got)
}
}
func TestWrapf(t *testing.T) {
tests := []struct {
err error
message string
want string
}{
{io.EOF, "read error", "read error: EOF"},
{Wrapf(io.EOF, "read error without format specifiers"), "client error", "client error: read error without format specifiers: EOF"},
{Wrapf(io.EOF, "read error with %d format specifier", 1), "client error", "client error: read error with 1 format specifier: EOF"},
}
for _, tt := range tests {
got := Wrapf(tt.err, tt.message).Error()
if got != tt.want {
t.Errorf("Wrapf(%v, %q): got: %v, want %v", tt.err, tt.message, got, tt.want)
}
}
}
func TestErrorf(t *testing.T) {
tests := []struct {
err error
want string
}{
{Errorf("read error without format specifiers"), "read error without format specifiers"},
{Errorf("read error with %d format specifier", 1), "read error with 1 format specifier"},
}
for _, tt := range tests {
got := tt.err.Error()
if got != tt.want {
t.Errorf("Errorf(%v): got: %q, want %q", tt.err, got, tt.want)
}
}
}
func TestWithStackNil(t *testing.T) {
got := WithStack(nil)
if got != nil {
t.Errorf("WithStack(nil): got %#v, expected nil", got)
}
}
func TestWithStack(t *testing.T) {
tests := []struct {
err error
want string
}{
{io.EOF, "EOF"},
{WithStack(io.EOF), "EOF"},
}
for _, tt := range tests {
got := WithStack(tt.err).Error()
if got != tt.want {
t.Errorf("WithStack(%v): got: %v, want %v", tt.err, got, tt.want)
}
}
}
func TestWithMessageNil(t *testing.T) {
got := WithMessage(nil, "no error")
if got != nil {
t.Errorf("WithMessage(nil, \"no error\"): got %#v, expected nil", got)
}
}
func TestWithMessage(t *testing.T) {
tests := []struct {
err error
message string
want string
}{
{io.EOF, "read error", "read error: EOF"},
{WithMessage(io.EOF, "read error"), "client error", "client error: read error: EOF"},
}
for _, tt := range tests {
got := WithMessage(tt.err, tt.message).Error()
if got != tt.want {
t.Errorf("WithMessage(%v, %q): got: %q, want %q", tt.err, tt.message, got, tt.want)
}
}
}
// errors.New, etc values are not expected to be compared by value
// but the change in errors#27 made them incomparable. Assert that
// various kinds of errors have a functional equality operator, even
// if the result of that equality is always false.
func TestErrorEquality(t *testing.T) {
vals := []error{
nil,
io.EOF,
errors.New("EOF"),
New("EOF"),
Errorf("EOF"),
Wrap(io.EOF, "EOF"),
Wrapf(io.EOF, "EOF%d", 2),
WithMessage(nil, "whoops"),
WithMessage(io.EOF, "whoops"),
WithStack(io.EOF),
WithStack(nil),
}
for i := range vals {
for j := range vals {
_ = vals[i] == vals[j] // mustn't panic
}
}
}

205
vendor/github.com/pkg/errors/example_test.go generated vendored Normal file
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@ -0,0 +1,205 @@
package errors_test
import (
"fmt"
"github.com/pkg/errors"
)
func ExampleNew() {
err := errors.New("whoops")
fmt.Println(err)
// Output: whoops
}
func ExampleNew_printf() {
err := errors.New("whoops")
fmt.Printf("%+v", err)
// Example output:
// whoops
// github.com/pkg/errors_test.ExampleNew_printf
// /home/dfc/src/github.com/pkg/errors/example_test.go:17
// testing.runExample
// /home/dfc/go/src/testing/example.go:114
// testing.RunExamples
// /home/dfc/go/src/testing/example.go:38
// testing.(*M).Run
// /home/dfc/go/src/testing/testing.go:744
// main.main
// /github.com/pkg/errors/_test/_testmain.go:106
// runtime.main
// /home/dfc/go/src/runtime/proc.go:183
// runtime.goexit
// /home/dfc/go/src/runtime/asm_amd64.s:2059
}
func ExampleWithMessage() {
cause := errors.New("whoops")
err := errors.WithMessage(cause, "oh noes")
fmt.Println(err)
// Output: oh noes: whoops
}
func ExampleWithStack() {
cause := errors.New("whoops")
err := errors.WithStack(cause)
fmt.Println(err)
// Output: whoops
}
func ExampleWithStack_printf() {
cause := errors.New("whoops")
err := errors.WithStack(cause)
fmt.Printf("%+v", err)
// Example Output:
// whoops
// github.com/pkg/errors_test.ExampleWithStack_printf
// /home/fabstu/go/src/github.com/pkg/errors/example_test.go:55
// testing.runExample
// /usr/lib/go/src/testing/example.go:114
// testing.RunExamples
// /usr/lib/go/src/testing/example.go:38
// testing.(*M).Run
// /usr/lib/go/src/testing/testing.go:744
// main.main
// github.com/pkg/errors/_test/_testmain.go:106
// runtime.main
// /usr/lib/go/src/runtime/proc.go:183
// runtime.goexit
// /usr/lib/go/src/runtime/asm_amd64.s:2086
// github.com/pkg/errors_test.ExampleWithStack_printf
// /home/fabstu/go/src/github.com/pkg/errors/example_test.go:56
// testing.runExample
// /usr/lib/go/src/testing/example.go:114
// testing.RunExamples
// /usr/lib/go/src/testing/example.go:38
// testing.(*M).Run
// /usr/lib/go/src/testing/testing.go:744
// main.main
// github.com/pkg/errors/_test/_testmain.go:106
// runtime.main
// /usr/lib/go/src/runtime/proc.go:183
// runtime.goexit
// /usr/lib/go/src/runtime/asm_amd64.s:2086
}
func ExampleWrap() {
cause := errors.New("whoops")
err := errors.Wrap(cause, "oh noes")
fmt.Println(err)
// Output: oh noes: whoops
}
func fn() error {
e1 := errors.New("error")
e2 := errors.Wrap(e1, "inner")
e3 := errors.Wrap(e2, "middle")
return errors.Wrap(e3, "outer")
}
func ExampleCause() {
err := fn()
fmt.Println(err)
fmt.Println(errors.Cause(err))
// Output: outer: middle: inner: error
// error
}
func ExampleWrap_extended() {
err := fn()
fmt.Printf("%+v\n", err)
// Example output:
// error
// github.com/pkg/errors_test.fn
// /home/dfc/src/github.com/pkg/errors/example_test.go:47
// github.com/pkg/errors_test.ExampleCause_printf
// /home/dfc/src/github.com/pkg/errors/example_test.go:63
// testing.runExample
// /home/dfc/go/src/testing/example.go:114
// testing.RunExamples
// /home/dfc/go/src/testing/example.go:38
// testing.(*M).Run
// /home/dfc/go/src/testing/testing.go:744
// main.main
// /github.com/pkg/errors/_test/_testmain.go:104
// runtime.main
// /home/dfc/go/src/runtime/proc.go:183
// runtime.goexit
// /home/dfc/go/src/runtime/asm_amd64.s:2059
// github.com/pkg/errors_test.fn
// /home/dfc/src/github.com/pkg/errors/example_test.go:48: inner
// github.com/pkg/errors_test.fn
// /home/dfc/src/github.com/pkg/errors/example_test.go:49: middle
// github.com/pkg/errors_test.fn
// /home/dfc/src/github.com/pkg/errors/example_test.go:50: outer
}
func ExampleWrapf() {
cause := errors.New("whoops")
err := errors.Wrapf(cause, "oh noes #%d", 2)
fmt.Println(err)
// Output: oh noes #2: whoops
}
func ExampleErrorf_extended() {
err := errors.Errorf("whoops: %s", "foo")
fmt.Printf("%+v", err)
// Example output:
// whoops: foo
// github.com/pkg/errors_test.ExampleErrorf
// /home/dfc/src/github.com/pkg/errors/example_test.go:101
// testing.runExample
// /home/dfc/go/src/testing/example.go:114
// testing.RunExamples
// /home/dfc/go/src/testing/example.go:38
// testing.(*M).Run
// /home/dfc/go/src/testing/testing.go:744
// main.main
// /github.com/pkg/errors/_test/_testmain.go:102
// runtime.main
// /home/dfc/go/src/runtime/proc.go:183
// runtime.goexit
// /home/dfc/go/src/runtime/asm_amd64.s:2059
}
func Example_stackTrace() {
type stackTracer interface {
StackTrace() errors.StackTrace
}
err, ok := errors.Cause(fn()).(stackTracer)
if !ok {
panic("oops, err does not implement stackTracer")
}
st := err.StackTrace()
fmt.Printf("%+v", st[0:2]) // top two frames
// Example output:
// github.com/pkg/errors_test.fn
// /home/dfc/src/github.com/pkg/errors/example_test.go:47
// github.com/pkg/errors_test.Example_stackTrace
// /home/dfc/src/github.com/pkg/errors/example_test.go:127
}
func ExampleCause_printf() {
err := errors.Wrap(func() error {
return func() error {
return errors.Errorf("hello %s", fmt.Sprintf("world"))
}()
}(), "failed")
fmt.Printf("%v", err)
// Output: failed: hello world
}

535
vendor/github.com/pkg/errors/format_test.go generated vendored Normal file
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@ -0,0 +1,535 @@
package errors
import (
"errors"
"fmt"
"io"
"regexp"
"strings"
"testing"
)
func TestFormatNew(t *testing.T) {
tests := []struct {
error
format string
want string
}{{
New("error"),
"%s",
"error",
}, {
New("error"),
"%v",
"error",
}, {
New("error"),
"%+v",
"error\n" +
"github.com/pkg/errors.TestFormatNew\n" +
"\t.+/github.com/pkg/errors/format_test.go:26",
}, {
New("error"),
"%q",
`"error"`,
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
}
}
func TestFormatErrorf(t *testing.T) {
tests := []struct {
error
format string
want string
}{{
Errorf("%s", "error"),
"%s",
"error",
}, {
Errorf("%s", "error"),
"%v",
"error",
}, {
Errorf("%s", "error"),
"%+v",
"error\n" +
"github.com/pkg/errors.TestFormatErrorf\n" +
"\t.+/github.com/pkg/errors/format_test.go:56",
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
}
}
func TestFormatWrap(t *testing.T) {
tests := []struct {
error
format string
want string
}{{
Wrap(New("error"), "error2"),
"%s",
"error2: error",
}, {
Wrap(New("error"), "error2"),
"%v",
"error2: error",
}, {
Wrap(New("error"), "error2"),
"%+v",
"error\n" +
"github.com/pkg/errors.TestFormatWrap\n" +
"\t.+/github.com/pkg/errors/format_test.go:82",
}, {
Wrap(io.EOF, "error"),
"%s",
"error: EOF",
}, {
Wrap(io.EOF, "error"),
"%v",
"error: EOF",
}, {
Wrap(io.EOF, "error"),
"%+v",
"EOF\n" +
"error\n" +
"github.com/pkg/errors.TestFormatWrap\n" +
"\t.+/github.com/pkg/errors/format_test.go:96",
}, {
Wrap(Wrap(io.EOF, "error1"), "error2"),
"%+v",
"EOF\n" +
"error1\n" +
"github.com/pkg/errors.TestFormatWrap\n" +
"\t.+/github.com/pkg/errors/format_test.go:103\n",
}, {
Wrap(New("error with space"), "context"),
"%q",
`"context: error with space"`,
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
}
}
func TestFormatWrapf(t *testing.T) {
tests := []struct {
error
format string
want string
}{{
Wrapf(io.EOF, "error%d", 2),
"%s",
"error2: EOF",
}, {
Wrapf(io.EOF, "error%d", 2),
"%v",
"error2: EOF",
}, {
Wrapf(io.EOF, "error%d", 2),
"%+v",
"EOF\n" +
"error2\n" +
"github.com/pkg/errors.TestFormatWrapf\n" +
"\t.+/github.com/pkg/errors/format_test.go:134",
}, {
Wrapf(New("error"), "error%d", 2),
"%s",
"error2: error",
}, {
Wrapf(New("error"), "error%d", 2),
"%v",
"error2: error",
}, {
Wrapf(New("error"), "error%d", 2),
"%+v",
"error\n" +
"github.com/pkg/errors.TestFormatWrapf\n" +
"\t.+/github.com/pkg/errors/format_test.go:149",
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.error, tt.format, tt.want)
}
}
func TestFormatWithStack(t *testing.T) {
tests := []struct {
error
format string
want []string
}{{
WithStack(io.EOF),
"%s",
[]string{"EOF"},
}, {
WithStack(io.EOF),
"%v",
[]string{"EOF"},
}, {
WithStack(io.EOF),
"%+v",
[]string{"EOF",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:175"},
}, {
WithStack(New("error")),
"%s",
[]string{"error"},
}, {
WithStack(New("error")),
"%v",
[]string{"error"},
}, {
WithStack(New("error")),
"%+v",
[]string{"error",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:189",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:189"},
}, {
WithStack(WithStack(io.EOF)),
"%+v",
[]string{"EOF",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:197",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:197"},
}, {
WithStack(WithStack(Wrapf(io.EOF, "message"))),
"%+v",
[]string{"EOF",
"message",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:205",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:205",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:205"},
}, {
WithStack(Errorf("error%d", 1)),
"%+v",
[]string{"error1",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:216",
"github.com/pkg/errors.TestFormatWithStack\n" +
"\t.+/github.com/pkg/errors/format_test.go:216"},
}}
for i, tt := range tests {
testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)
}
}
func TestFormatWithMessage(t *testing.T) {
tests := []struct {
error
format string
want []string
}{{
WithMessage(New("error"), "error2"),
"%s",
[]string{"error2: error"},
}, {
WithMessage(New("error"), "error2"),
"%v",
[]string{"error2: error"},
}, {
WithMessage(New("error"), "error2"),
"%+v",
[]string{
"error",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:244",
"error2"},
}, {
WithMessage(io.EOF, "addition1"),
"%s",
[]string{"addition1: EOF"},
}, {
WithMessage(io.EOF, "addition1"),
"%v",
[]string{"addition1: EOF"},
}, {
WithMessage(io.EOF, "addition1"),
"%+v",
[]string{"EOF", "addition1"},
}, {
WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),
"%v",
[]string{"addition2: addition1: EOF"},
}, {
WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),
"%+v",
[]string{"EOF", "addition1", "addition2"},
}, {
Wrap(WithMessage(io.EOF, "error1"), "error2"),
"%+v",
[]string{"EOF", "error1", "error2",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:272"},
}, {
WithMessage(Errorf("error%d", 1), "error2"),
"%+v",
[]string{"error1",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:278",
"error2"},
}, {
WithMessage(WithStack(io.EOF), "error"),
"%+v",
[]string{
"EOF",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:285",
"error"},
}, {
WithMessage(Wrap(WithStack(io.EOF), "inside-error"), "outside-error"),
"%+v",
[]string{
"EOF",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:293",
"inside-error",
"github.com/pkg/errors.TestFormatWithMessage\n" +
"\t.+/github.com/pkg/errors/format_test.go:293",
"outside-error"},
}}
for i, tt := range tests {
testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)
}
}
func TestFormatGeneric(t *testing.T) {
starts := []struct {
err error
want []string
}{
{New("new-error"), []string{
"new-error",
"github.com/pkg/errors.TestFormatGeneric\n" +
"\t.+/github.com/pkg/errors/format_test.go:315"},
}, {Errorf("errorf-error"), []string{
"errorf-error",
"github.com/pkg/errors.TestFormatGeneric\n" +
"\t.+/github.com/pkg/errors/format_test.go:319"},
}, {errors.New("errors-new-error"), []string{
"errors-new-error"},
},
}
wrappers := []wrapper{
{
func(err error) error { return WithMessage(err, "with-message") },
[]string{"with-message"},
}, {
func(err error) error { return WithStack(err) },
[]string{
"github.com/pkg/errors.(func·002|TestFormatGeneric.func2)\n\t" +
".+/github.com/pkg/errors/format_test.go:333",
},
}, {
func(err error) error { return Wrap(err, "wrap-error") },
[]string{
"wrap-error",
"github.com/pkg/errors.(func·003|TestFormatGeneric.func3)\n\t" +
".+/github.com/pkg/errors/format_test.go:339",
},
}, {
func(err error) error { return Wrapf(err, "wrapf-error%d", 1) },
[]string{
"wrapf-error1",
"github.com/pkg/errors.(func·004|TestFormatGeneric.func4)\n\t" +
".+/github.com/pkg/errors/format_test.go:346",
},
},
}
for s := range starts {
err := starts[s].err
want := starts[s].want
testFormatCompleteCompare(t, s, err, "%+v", want, false)
testGenericRecursive(t, err, want, wrappers, 3)
}
}
func testFormatRegexp(t *testing.T, n int, arg interface{}, format, want string) {
got := fmt.Sprintf(format, arg)
gotLines := strings.SplitN(got, "\n", -1)
wantLines := strings.SplitN(want, "\n", -1)
if len(wantLines) > len(gotLines) {
t.Errorf("test %d: wantLines(%d) > gotLines(%d):\n got: %q\nwant: %q", n+1, len(wantLines), len(gotLines), got, want)
return
}
for i, w := range wantLines {
match, err := regexp.MatchString(w, gotLines[i])
if err != nil {
t.Fatal(err)
}
if !match {
t.Errorf("test %d: line %d: fmt.Sprintf(%q, err):\n got: %q\nwant: %q", n+1, i+1, format, got, want)
}
}
}
var stackLineR = regexp.MustCompile(`\.`)
// parseBlocks parses input into a slice, where:
// - incase entry contains a newline, its a stacktrace
// - incase entry contains no newline, its a solo line.
//
// Detecting stack boundaries only works incase the WithStack-calls are
// to be found on the same line, thats why it is optionally here.
//
// Example use:
//
// for _, e := range blocks {
// if strings.ContainsAny(e, "\n") {
// // Match as stack
// } else {
// // Match as line
// }
// }
//
func parseBlocks(input string, detectStackboundaries bool) ([]string, error) {
var blocks []string
stack := ""
wasStack := false
lines := map[string]bool{} // already found lines
for _, l := range strings.Split(input, "\n") {
isStackLine := stackLineR.MatchString(l)
switch {
case !isStackLine && wasStack:
blocks = append(blocks, stack, l)
stack = ""
lines = map[string]bool{}
case isStackLine:
if wasStack {
// Detecting two stacks after another, possible cause lines match in
// our tests due to WithStack(WithStack(io.EOF)) on same line.
if detectStackboundaries {
if lines[l] {
if len(stack) == 0 {
return nil, errors.New("len of block must not be zero here")
}
blocks = append(blocks, stack)
stack = l
lines = map[string]bool{l: true}
continue
}
}
stack = stack + "\n" + l
} else {
stack = l
}
lines[l] = true
case !isStackLine && !wasStack:
blocks = append(blocks, l)
default:
return nil, errors.New("must not happen")
}
wasStack = isStackLine
}
// Use up stack
if stack != "" {
blocks = append(blocks, stack)
}
return blocks, nil
}
func testFormatCompleteCompare(t *testing.T, n int, arg interface{}, format string, want []string, detectStackBoundaries bool) {
gotStr := fmt.Sprintf(format, arg)
got, err := parseBlocks(gotStr, detectStackBoundaries)
if err != nil {
t.Fatal(err)
}
if len(got) != len(want) {
t.Fatalf("test %d: fmt.Sprintf(%s, err) -> wrong number of blocks: got(%d) want(%d)\n got: %s\nwant: %s\ngotStr: %q",
n+1, format, len(got), len(want), prettyBlocks(got), prettyBlocks(want), gotStr)
}
for i := range got {
if strings.ContainsAny(want[i], "\n") {
// Match as stack
match, err := regexp.MatchString(want[i], got[i])
if err != nil {
t.Fatal(err)
}
if !match {
t.Fatalf("test %d: block %d: fmt.Sprintf(%q, err):\ngot:\n%q\nwant:\n%q\nall-got:\n%s\nall-want:\n%s\n",
n+1, i+1, format, got[i], want[i], prettyBlocks(got), prettyBlocks(want))
}
} else {
// Match as message
if got[i] != want[i] {
t.Fatalf("test %d: fmt.Sprintf(%s, err) at block %d got != want:\n got: %q\nwant: %q", n+1, format, i+1, got[i], want[i])
}
}
}
}
type wrapper struct {
wrap func(err error) error
want []string
}
func prettyBlocks(blocks []string, prefix ...string) string {
var out []string
for _, b := range blocks {
out = append(out, fmt.Sprintf("%v", b))
}
return " " + strings.Join(out, "\n ")
}
func testGenericRecursive(t *testing.T, beforeErr error, beforeWant []string, list []wrapper, maxDepth int) {
if len(beforeWant) == 0 {
panic("beforeWant must not be empty")
}
for _, w := range list {
if len(w.want) == 0 {
panic("want must not be empty")
}
err := w.wrap(beforeErr)
// Copy required cause append(beforeWant, ..) modified beforeWant subtly.
beforeCopy := make([]string, len(beforeWant))
copy(beforeCopy, beforeWant)
beforeWant := beforeCopy
last := len(beforeWant) - 1
var want []string
// Merge two stacks behind each other.
if strings.ContainsAny(beforeWant[last], "\n") && strings.ContainsAny(w.want[0], "\n") {
want = append(beforeWant[:last], append([]string{beforeWant[last] + "((?s).*)" + w.want[0]}, w.want[1:]...)...)
} else {
want = append(beforeWant, w.want...)
}
testFormatCompleteCompare(t, maxDepth, err, "%+v", want, false)
if maxDepth > 0 {
testGenericRecursive(t, err, want, list, maxDepth-1)
}
}
}

178
vendor/github.com/pkg/errors/stack.go generated vendored Normal file
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@ -0,0 +1,178 @@
package errors
import (
"fmt"
"io"
"path"
"runtime"
"strings"
)
// Frame represents a program counter inside a stack frame.
type Frame uintptr
// pc returns the program counter for this frame;
// multiple frames may have the same PC value.
func (f Frame) pc() uintptr { return uintptr(f) - 1 }
// file returns the full path to the file that contains the
// function for this Frame's pc.
func (f Frame) file() string {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return "unknown"
}
file, _ := fn.FileLine(f.pc())
return file
}
// line returns the line number of source code of the
// function for this Frame's pc.
func (f Frame) line() int {
fn := runtime.FuncForPC(f.pc())
if fn == nil {
return 0
}
_, line := fn.FileLine(f.pc())
return line
}
// Format formats the frame according to the fmt.Formatter interface.
//
// %s source file
// %d source line
// %n function name
// %v equivalent to %s:%d
//
// Format accepts flags that alter the printing of some verbs, as follows:
//
// %+s path of source file relative to the compile time GOPATH
// %+v equivalent to %+s:%d
func (f Frame) Format(s fmt.State, verb rune) {
switch verb {
case 's':
switch {
case s.Flag('+'):
pc := f.pc()
fn := runtime.FuncForPC(pc)
if fn == nil {
io.WriteString(s, "unknown")
} else {
file, _ := fn.FileLine(pc)
fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file)
}
default:
io.WriteString(s, path.Base(f.file()))
}
case 'd':
fmt.Fprintf(s, "%d", f.line())
case 'n':
name := runtime.FuncForPC(f.pc()).Name()
io.WriteString(s, funcname(name))
case 'v':
f.Format(s, 's')
io.WriteString(s, ":")
f.Format(s, 'd')
}
}
// StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
type StackTrace []Frame
func (st StackTrace) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case s.Flag('+'):
for _, f := range st {
fmt.Fprintf(s, "\n%+v", f)
}
case s.Flag('#'):
fmt.Fprintf(s, "%#v", []Frame(st))
default:
fmt.Fprintf(s, "%v", []Frame(st))
}
case 's':
fmt.Fprintf(s, "%s", []Frame(st))
}
}
// stack represents a stack of program counters.
type stack []uintptr
func (s *stack) Format(st fmt.State, verb rune) {
switch verb {
case 'v':
switch {
case st.Flag('+'):
for _, pc := range *s {
f := Frame(pc)
fmt.Fprintf(st, "\n%+v", f)
}
}
}
}
func (s *stack) StackTrace() StackTrace {
f := make([]Frame, len(*s))
for i := 0; i < len(f); i++ {
f[i] = Frame((*s)[i])
}
return f
}
func callers() *stack {
const depth = 32
var pcs [depth]uintptr
n := runtime.Callers(3, pcs[:])
var st stack = pcs[0:n]
return &st
}
// funcname removes the path prefix component of a function's name reported by func.Name().
func funcname(name string) string {
i := strings.LastIndex(name, "/")
name = name[i+1:]
i = strings.Index(name, ".")
return name[i+1:]
}
func trimGOPATH(name, file string) string {
// Here we want to get the source file path relative to the compile time
// GOPATH. As of Go 1.6.x there is no direct way to know the compiled
// GOPATH at runtime, but we can infer the number of path segments in the
// GOPATH. We note that fn.Name() returns the function name qualified by
// the import path, which does not include the GOPATH. Thus we can trim
// segments from the beginning of the file path until the number of path
// separators remaining is one more than the number of path separators in
// the function name. For example, given:
//
// GOPATH /home/user
// file /home/user/src/pkg/sub/file.go
// fn.Name() pkg/sub.Type.Method
//
// We want to produce:
//
// pkg/sub/file.go
//
// From this we can easily see that fn.Name() has one less path separator
// than our desired output. We count separators from the end of the file
// path until it finds two more than in the function name and then move
// one character forward to preserve the initial path segment without a
// leading separator.
const sep = "/"
goal := strings.Count(name, sep) + 2
i := len(file)
for n := 0; n < goal; n++ {
i = strings.LastIndex(file[:i], sep)
if i == -1 {
// not enough separators found, set i so that the slice expression
// below leaves file unmodified
i = -len(sep)
break
}
}
// get back to 0 or trim the leading separator
file = file[i+len(sep):]
return file
}

292
vendor/github.com/pkg/errors/stack_test.go generated vendored Normal file
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package errors
import (
"fmt"
"runtime"
"testing"
)
var initpc, _, _, _ = runtime.Caller(0)
func TestFrameLine(t *testing.T) {
var tests = []struct {
Frame
want int
}{{
Frame(initpc),
9,
}, {
func() Frame {
var pc, _, _, _ = runtime.Caller(0)
return Frame(pc)
}(),
20,
}, {
func() Frame {
var pc, _, _, _ = runtime.Caller(1)
return Frame(pc)
}(),
28,
}, {
Frame(0), // invalid PC
0,
}}
for _, tt := range tests {
got := tt.Frame.line()
want := tt.want
if want != got {
t.Errorf("Frame(%v): want: %v, got: %v", uintptr(tt.Frame), want, got)
}
}
}
type X struct{}
func (x X) val() Frame {
var pc, _, _, _ = runtime.Caller(0)
return Frame(pc)
}
func (x *X) ptr() Frame {
var pc, _, _, _ = runtime.Caller(0)
return Frame(pc)
}
func TestFrameFormat(t *testing.T) {
var tests = []struct {
Frame
format string
want string
}{{
Frame(initpc),
"%s",
"stack_test.go",
}, {
Frame(initpc),
"%+s",
"github.com/pkg/errors.init\n" +
"\t.+/github.com/pkg/errors/stack_test.go",
}, {
Frame(0),
"%s",
"unknown",
}, {
Frame(0),
"%+s",
"unknown",
}, {
Frame(initpc),
"%d",
"9",
}, {
Frame(0),
"%d",
"0",
}, {
Frame(initpc),
"%n",
"init",
}, {
func() Frame {
var x X
return x.ptr()
}(),
"%n",
`\(\*X\).ptr`,
}, {
func() Frame {
var x X
return x.val()
}(),
"%n",
"X.val",
}, {
Frame(0),
"%n",
"",
}, {
Frame(initpc),
"%v",
"stack_test.go:9",
}, {
Frame(initpc),
"%+v",
"github.com/pkg/errors.init\n" +
"\t.+/github.com/pkg/errors/stack_test.go:9",
}, {
Frame(0),
"%v",
"unknown:0",
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.Frame, tt.format, tt.want)
}
}
func TestFuncname(t *testing.T) {
tests := []struct {
name, want string
}{
{"", ""},
{"runtime.main", "main"},
{"github.com/pkg/errors.funcname", "funcname"},
{"funcname", "funcname"},
{"io.copyBuffer", "copyBuffer"},
{"main.(*R).Write", "(*R).Write"},
}
for _, tt := range tests {
got := funcname(tt.name)
want := tt.want
if got != want {
t.Errorf("funcname(%q): want: %q, got %q", tt.name, want, got)
}
}
}
func TestTrimGOPATH(t *testing.T) {
var tests = []struct {
Frame
want string
}{{
Frame(initpc),
"github.com/pkg/errors/stack_test.go",
}}
for i, tt := range tests {
pc := tt.Frame.pc()
fn := runtime.FuncForPC(pc)
file, _ := fn.FileLine(pc)
got := trimGOPATH(fn.Name(), file)
testFormatRegexp(t, i, got, "%s", tt.want)
}
}
func TestStackTrace(t *testing.T) {
tests := []struct {
err error
want []string
}{{
New("ooh"), []string{
"github.com/pkg/errors.TestStackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:172",
},
}, {
Wrap(New("ooh"), "ahh"), []string{
"github.com/pkg/errors.TestStackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:177", // this is the stack of Wrap, not New
},
}, {
Cause(Wrap(New("ooh"), "ahh")), []string{
"github.com/pkg/errors.TestStackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:182", // this is the stack of New
},
}, {
func() error { return New("ooh") }(), []string{
`github.com/pkg/errors.(func·009|TestStackTrace.func1)` +
"\n\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New
"github.com/pkg/errors.TestStackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New's caller
},
}, {
Cause(func() error {
return func() error {
return Errorf("hello %s", fmt.Sprintf("world"))
}()
}()), []string{
`github.com/pkg/errors.(func·010|TestStackTrace.func2.1)` +
"\n\t.+/github.com/pkg/errors/stack_test.go:196", // this is the stack of Errorf
`github.com/pkg/errors.(func·011|TestStackTrace.func2)` +
"\n\t.+/github.com/pkg/errors/stack_test.go:197", // this is the stack of Errorf's caller
"github.com/pkg/errors.TestStackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:198", // this is the stack of Errorf's caller's caller
},
}}
for i, tt := range tests {
x, ok := tt.err.(interface {
StackTrace() StackTrace
})
if !ok {
t.Errorf("expected %#v to implement StackTrace() StackTrace", tt.err)
continue
}
st := x.StackTrace()
for j, want := range tt.want {
testFormatRegexp(t, i, st[j], "%+v", want)
}
}
}
func stackTrace() StackTrace {
const depth = 8
var pcs [depth]uintptr
n := runtime.Callers(1, pcs[:])
var st stack = pcs[0:n]
return st.StackTrace()
}
func TestStackTraceFormat(t *testing.T) {
tests := []struct {
StackTrace
format string
want string
}{{
nil,
"%s",
`\[\]`,
}, {
nil,
"%v",
`\[\]`,
}, {
nil,
"%+v",
"",
}, {
nil,
"%#v",
`\[\]errors.Frame\(nil\)`,
}, {
make(StackTrace, 0),
"%s",
`\[\]`,
}, {
make(StackTrace, 0),
"%v",
`\[\]`,
}, {
make(StackTrace, 0),
"%+v",
"",
}, {
make(StackTrace, 0),
"%#v",
`\[\]errors.Frame{}`,
}, {
stackTrace()[:2],
"%s",
`\[stack_test.go stack_test.go\]`,
}, {
stackTrace()[:2],
"%v",
`\[stack_test.go:225 stack_test.go:272\]`,
}, {
stackTrace()[:2],
"%+v",
"\n" +
"github.com/pkg/errors.stackTrace\n" +
"\t.+/github.com/pkg/errors/stack_test.go:225\n" +
"github.com/pkg/errors.TestStackTraceFormat\n" +
"\t.+/github.com/pkg/errors/stack_test.go:276",
}, {
stackTrace()[:2],
"%#v",
`\[\]errors.Frame{stack_test.go:225, stack_test.go:284}`,
}}
for i, tt := range tests {
testFormatRegexp(t, i, tt.StackTrace, tt.format, tt.want)
}
}

2
vendor/github.com/pressly/sup/.gitignore generated vendored Normal file
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@ -0,0 +1,2 @@
bin/
*.sw?

11
vendor/github.com/pressly/sup/.travis.yml generated vendored Normal file
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@ -0,0 +1,11 @@
sudo: false
language: go
go:
- 1.9
- tip
install:
- make build
script:
- make test

22
vendor/github.com/pressly/sup/LICENSE generated vendored Normal file
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@ -0,0 +1,22 @@
MIT License
Copyright (c) 2015 Pressly Inc. www.pressly.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.

44
vendor/github.com/pressly/sup/Makefile generated vendored Normal file
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.PHONY: all build dist test install clean tools deps update-deps
all:
@echo "build - Build sup"
@echo "dist - Build sup distribution binaries"
@echo "test - Run tests"
@echo "install - Install binary"
@echo "clean - Clean up"
@echo ""
@echo "tools - Install tools"
@echo "vendor-list - List vendor package tree"
@echo "vendor-update - Update vendored packages"
build:
@mkdir -p ./bin
@rm -f ./bin/*
go build -o ./bin/sup ./cmd/sup
dist:
@mkdir -p ./bin
@rm -f ./bin/*
GOOS=darwin GOARCH=amd64 go build -o ./bin/sup-darwin64 ./cmd/sup
GOOS=linux GOARCH=amd64 go build -o ./bin/sup-linux64 ./cmd/sup
GOOS=linux GOARCH=386 go build -o ./bin/sup-linux386 ./cmd/sup
GOOS=windows GOARCH=amd64 go build -o ./bin/sup-windows64.exe ./cmd/sup
GOOS=windows GOARCH=386 go build -o ./bin/sup-windows386.exe ./cmd/sup
test:
go test ./...
install:
go install ./cmd/sup
clean:
@rm -rf ./bin
tools:
go get -u github.com/kardianos/govendor
vendor-list:
@govendor list
vendor-update:
@govendor update +external

326
vendor/github.com/pressly/sup/README.md generated vendored Normal file
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Stack Up
========
Stack Up is a simple deployment tool that performs given set of commands on multiple hosts in parallel. It reads Supfile, a YAML configuration file, which defines networks (groups of hosts), commands and targets.
# Demo
[![Sup](https://github.com/pressly/sup/blob/gif/asciinema.gif?raw=true)](https://asciinema.org/a/19742?autoplay=1)
*Note: Demo is based on [this example Supfile](./example/Supfile).*
# Installation
$ go get -u github.com/pressly/sup/cmd/sup
# Usage
$ sup [OPTIONS] NETWORK COMMAND [...]
### Options
| Option | Description |
|-------------------|----------------------------------|
| `-f Supfile` | Custom path to Supfile |
| `-e`, `--env=[]` | Set environment variables |
| `--only REGEXP` | Filter hosts matching regexp |
| `--except REGEXP` | Filter out hosts matching regexp |
| `--debug`, `-D` | Enable debug/verbose mode |
| `--disable-prefix`| Disable hostname prefix |
| `--help`, `-h` | Show help/usage |
| `--version`, `-v` | Print version |
## Network
A group of hosts.
```yaml
# Supfile
networks:
production:
hosts:
- api1.example.com
- api2.example.com
- api3.example.com
staging:
# fetch dynamic list of hosts
inventory: curl http://example.com/latest/meta-data/hostname
```
`$ sup production COMMAND` will run COMMAND on `api1`, `api2` and `api3` hosts in parallel.
## Command
A shell command(s) to be run remotely.
```yaml
# Supfile
commands:
restart:
desc: Restart example Docker container
run: sudo docker restart example
tail-logs:
desc: Watch tail of Docker logs from all hosts
run: sudo docker logs --tail=20 -f example
```
`$ sup staging restart` will restart all staging Docker containers in parallel.
`$ sup production tail-logs` will tail Docker logs from all production containers in parallel.
### Serial command (a.k.a. Rolling Update)
`serial: N` constraints a command to be run on `N` hosts at a time at maximum. Rolling Update for free!
```yaml
# Supfile
commands:
restart:
desc: Restart example Docker container
run: sudo docker restart example
serial: 2
```
`$ sup production restart` will restart all Docker containers, two at a time at maximum.
### Once command (one host only)
`once: true` constraints a command to be run only on one host. Useful for one-time tasks.
```yaml
# Supfile
commands:
build:
desc: Build Docker image and push to registry
run: sudo docker build -t image:latest . && sudo docker push image:latest
once: true # one host only
pull:
desc: Pull latest Docker image from registry
run: sudo docker pull image:latest
```
`$ sup production build pull` will build Docker image on one production host only and spread it to all hosts.
### Local command
Runs command always on localhost.
```yaml
# Supfile
commands:
prepare:
desc: Prepare to upload
local: npm run build
```
### Upload command
Uploads files/directories to all remote hosts. Uses `tar` under the hood.
```yaml
# Supfile
commands:
upload:
desc: Upload dist files to all hosts
upload:
- src: ./dist
dst: /tmp/
```
### Interactive Bash on all hosts
Do you want to interact with multiple hosts at once? Sure!
```yaml
# Supfile
commands:
bash:
desc: Interactive Bash on all hosts
stdin: true
run: bash
```
```bash
$ sup production bash
#
# type in commands and see output from all hosts!
# ^C
```
Passing prepared commands to all hosts:
```bash
$ echo 'sudo apt-get update -y' | sup production bash
# or:
$ sup production bash <<< 'sudo apt-get update -y'
# or:
$ cat <<EOF | sup production bash
sudo apt-get update -y
date
uname -a
EOF
```
### Interactive Docker Exec on all hosts
```yaml
# Supfile
commands:
exec:
desc: Exec into Docker container on all hosts
stdin: true
run: sudo docker exec -i $CONTAINER bash
```
```bash
$ sup production exec
ps aux
strace -p 1 # trace system calls and signals on all your production hosts
```
## Target
Target is an alias for multiple commands. Each command will be run on all hosts in parallel,
`sup` will check return status from all hosts, and run subsequent commands on success only
(thus any error on any host will interrupt the process).
```yaml
# Supfile
targets:
deploy:
- build
- pull
- migrate-db-up
- stop-rm-run
- health
- slack-notify
- airbrake-notify
```
`$ sup production deploy`
is equivalent to
`$ sup production build pull migrate-db-up stop-rm-run health slack-notify airbrake-notify`
# Supfile
See [example Supfile](./example/Supfile).
### Basic structure
```yaml
# Supfile
---
version: 0.4
# Global environment variables
env:
NAME: api
IMAGE: example/api
networks:
local:
hosts:
- localhost
staging:
hosts:
- stg1.example.com
production:
hosts:
- api1.example.com
- api2.example.com
commands:
echo:
desc: Print some env vars
run: echo $NAME $IMAGE $SUP_NETWORK
date:
desc: Print OS name and current date/time
run: uname -a; date
targets:
all:
- echo
- date
```
### Default environment variables available in Supfile
- `$SUP_HOST` - Current host.
- `$SUP_NETWORK` - Current network.
- `$SUP_USER` - User who invoked sup command.
- `$SUP_TIME` - Date/time of sup command invocation.
- `$SUP_ENV` - Environment variables provided on sup command invocation. You can pass `$SUP_ENV` to another `sup` or `docker` commands in your Supfile.
# Running sup from Supfile
Supfile doesn't let you import another Supfile. Instead, it lets you run `sup` sub-process from inside your Supfile. This is how you can structure larger projects:
```
./Supfile
./database/Supfile
./services/scheduler/Supfile
```
Top-level Supfile calls `sup` with Supfiles from sub-projects:
```yaml
restart-scheduler:
desc: Restart scheduler
local: >
sup -f ./services/scheduler/Supfile $SUP_ENV $SUP_NETWORK restart
db-up:
desc: Migrate database
local: >
sup -f ./database/Supfile $SUP_ENV $SUP_NETWORK up
```
# Common SSH Problem
if for some reason sup doesn't connect and you get the following error,
```bash
connecting to clients failed: connecting to remote host failed: Connect("myserver@xxx.xxx.xxx.xxx"): ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
```
it means that your `ssh-agent` dosen't have access to your public and private keys. in order to fix this issue, follow the below instructions:
- run the following command and make sure you have a key register with `ssh-agent`
```bash
ssh-add -l
```
if you see something like `The agent has no identities.` it means that you need to manually add your key to `ssh-agent`.
in order to do that, run the following command
```bash
ssh-add ~/.ssh/id_rsa
```
you should now be able to use sup with your ssh key.
# Development
fork it, hack it..
$ make build
create new Pull Request
We'll be happy to review & accept new Pull Requests!
# License
Licensed under the [MIT License](./LICENSE).

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vendor/github.com/pressly/sup/client.go generated vendored Normal file
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package sup
import (
"io"
"os"
)
type Client interface {
Connect(host string) error
Run(task *Task) error
Wait() error
Close() error
Prefix() (string, int)
Write(p []byte) (n int, err error)
WriteClose() error
Stdin() io.WriteCloser
Stderr() io.Reader
Stdout() io.Reader
Signal(os.Signal) error
}

383
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package main
import (
"flag"
"fmt"
"io/ioutil"
"os"
"os/user"
"path/filepath"
"regexp"
"strings"
"text/tabwriter"
"time"
"github.com/mikkeloscar/sshconfig"
"github.com/pkg/errors"
"github.com/pressly/sup"
)
var (
supfile string
envVars flagStringSlice
sshConfig string
onlyHosts string
exceptHosts string
debug bool
disablePrefix bool
showVersion bool
showHelp bool
ErrUsage = errors.New("Usage: sup [OPTIONS] NETWORK COMMAND [...]\n sup [ --help | -v | --version ]")
ErrUnknownNetwork = errors.New("Unknown network")
ErrNetworkNoHosts = errors.New("No hosts defined for a given network")
ErrCmd = errors.New("Unknown command/target")
ErrTargetNoCommands = errors.New("No commands defined for a given target")
ErrConfigFile = errors.New("Unknown ssh_config file")
)
type flagStringSlice []string
func (f *flagStringSlice) String() string {
return fmt.Sprintf("%v", *f)
}
func (f *flagStringSlice) Set(value string) error {
*f = append(*f, value)
return nil
}
func init() {
flag.StringVar(&supfile, "f", "", "Custom path to ./Supfile[.yml]")
flag.Var(&envVars, "e", "Set environment variables")
flag.Var(&envVars, "env", "Set environment variables")
flag.StringVar(&sshConfig, "sshconfig", "", "Read SSH Config file, ie. ~/.ssh/config file")
flag.StringVar(&onlyHosts, "only", "", "Filter hosts using regexp")
flag.StringVar(&exceptHosts, "except", "", "Filter out hosts using regexp")
flag.BoolVar(&debug, "D", false, "Enable debug mode")
flag.BoolVar(&debug, "debug", false, "Enable debug mode")
flag.BoolVar(&disablePrefix, "disable-prefix", false, "Disable hostname prefix")
flag.BoolVar(&showVersion, "v", false, "Print version")
flag.BoolVar(&showVersion, "version", false, "Print version")
flag.BoolVar(&showHelp, "h", false, "Show help")
flag.BoolVar(&showHelp, "help", false, "Show help")
}
func networkUsage(conf *sup.Supfile) {
w := &tabwriter.Writer{}
w.Init(os.Stderr, 4, 4, 2, ' ', 0)
defer w.Flush()
// Print available networks/hosts.
fmt.Fprintln(w, "Networks:\t")
for _, name := range conf.Networks.Names {
fmt.Fprintf(w, "- %v\n", name)
network, _ := conf.Networks.Get(name)
for _, host := range network.Hosts {
fmt.Fprintf(w, "\t- %v\n", host)
}
}
fmt.Fprintln(w)
}
func cmdUsage(conf *sup.Supfile) {
w := &tabwriter.Writer{}
w.Init(os.Stderr, 4, 4, 2, ' ', 0)
defer w.Flush()
// Print available targets/commands.
fmt.Fprintln(w, "Targets:\t")
for _, name := range conf.Targets.Names {
cmds, _ := conf.Targets.Get(name)
fmt.Fprintf(w, "- %v\t%v\n", name, strings.Join(cmds, " "))
}
fmt.Fprintln(w, "\t")
fmt.Fprintln(w, "Commands:\t")
for _, name := range conf.Commands.Names {
cmd, _ := conf.Commands.Get(name)
fmt.Fprintf(w, "- %v\t%v\n", name, cmd.Desc)
}
fmt.Fprintln(w)
}
// parseArgs parses args and returns network and commands to be run.
// On error, it prints usage and exits.
func parseArgs(conf *sup.Supfile) (*sup.Network, []*sup.Command, error) {
var commands []*sup.Command
args := flag.Args()
if len(args) < 1 {
networkUsage(conf)
return nil, nil, ErrUsage
}
// Does the <network> exist?
network, ok := conf.Networks.Get(args[0])
if !ok {
networkUsage(conf)
return nil, nil, ErrUnknownNetwork
}
// Parse CLI --env flag env vars, override values defined in Network env.
for _, env := range envVars {
if len(env) == 0 {
continue
}
i := strings.Index(env, "=")
if i < 0 {
if len(env) > 0 {
network.Env.Set(env, "")
}
continue
}
network.Env.Set(env[:i], env[i+1:])
}
hosts, err := network.ParseInventory()
if err != nil {
return nil, nil, err
}
network.Hosts = append(network.Hosts, hosts...)
// Does the <network> have at least one host?
if len(network.Hosts) == 0 {
networkUsage(conf)
return nil, nil, ErrNetworkNoHosts
}
// Check for the second argument
if len(args) < 2 {
cmdUsage(conf)
return nil, nil, ErrUsage
}
// In case of the network.Env needs an initialization
if network.Env == nil {
network.Env = make(sup.EnvList, 0)
}
// Add default env variable with current network
network.Env.Set("SUP_NETWORK", args[0])
// Add default nonce
network.Env.Set("SUP_TIME", time.Now().UTC().Format(time.RFC3339))
if os.Getenv("SUP_TIME") != "" {
network.Env.Set("SUP_TIME", os.Getenv("SUP_TIME"))
}
// Add user
if os.Getenv("SUP_USER") != "" {
network.Env.Set("SUP_USER", os.Getenv("SUP_USER"))
} else {
network.Env.Set("SUP_USER", os.Getenv("USER"))
}
for _, cmd := range args[1:] {
// Target?
target, isTarget := conf.Targets.Get(cmd)
if isTarget {
// Loop over target's commands.
for _, cmd := range target {
command, isCommand := conf.Commands.Get(cmd)
if !isCommand {
cmdUsage(conf)
return nil, nil, fmt.Errorf("%v: %v", ErrCmd, cmd)
}
command.Name = cmd
commands = append(commands, &command)
}
}
// Command?
command, isCommand := conf.Commands.Get(cmd)
if isCommand {
command.Name = cmd
commands = append(commands, &command)
}
if !isTarget && !isCommand {
cmdUsage(conf)
return nil, nil, fmt.Errorf("%v: %v", ErrCmd, cmd)
}
}
return &network, commands, nil
}
func resolvePath(path string) string {
if path == "" {
return ""
}
if path[:2] == "~/" {
usr, err := user.Current()
if err == nil {
path = filepath.Join(usr.HomeDir, path[2:])
}
}
return path
}
func main() {
flag.Parse()
if showHelp {
fmt.Fprintln(os.Stderr, ErrUsage, "\n\nOptions:")
flag.PrintDefaults()
return
}
if showVersion {
fmt.Fprintln(os.Stderr, sup.VERSION)
return
}
if supfile == "" {
supfile = "./Supfile"
}
data, err := ioutil.ReadFile(resolvePath(supfile))
if err != nil {
firstErr := err
data, err = ioutil.ReadFile("./Supfile.yml") // Alternative to ./Supfile.
if err != nil {
fmt.Fprintln(os.Stderr, firstErr)
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
conf, err := sup.NewSupfile(data)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// Parse network and commands to be run from args.
network, commands, err := parseArgs(conf)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// --only flag filters hosts
if onlyHosts != "" {
expr, err := regexp.CompilePOSIX(onlyHosts)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
var hosts []string
for _, host := range network.Hosts {
if expr.MatchString(host) {
hosts = append(hosts, host)
}
}
if len(hosts) == 0 {
fmt.Fprintln(os.Stderr, fmt.Errorf("no hosts match --only '%v' regexp", onlyHosts))
os.Exit(1)
}
network.Hosts = hosts
}
// --except flag filters out hosts
if exceptHosts != "" {
expr, err := regexp.CompilePOSIX(exceptHosts)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
var hosts []string
for _, host := range network.Hosts {
if !expr.MatchString(host) {
hosts = append(hosts, host)
}
}
if len(hosts) == 0 {
fmt.Fprintln(os.Stderr, fmt.Errorf("no hosts left after --except '%v' regexp", onlyHosts))
os.Exit(1)
}
network.Hosts = hosts
}
// --sshconfig flag location for ssh_config file
if sshConfig != "" {
confHosts, err := sshconfig.ParseSSHConfig(resolvePath(sshConfig))
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// flatten Host -> *SSHHost, not the prettiest
// but will do
confMap := map[string]*sshconfig.SSHHost{}
for _, conf := range confHosts {
for _, host := range conf.Host {
confMap[host] = conf
}
}
// check network.Hosts for match
for _, host := range network.Hosts {
conf, found := confMap[host]
if found {
network.User = conf.User
network.IdentityFile = resolvePath(conf.IdentityFile)
network.Hosts = []string{fmt.Sprintf("%s:%d", conf.HostName, conf.Port)}
}
}
}
var vars sup.EnvList
for _, val := range append(conf.Env, network.Env...) {
vars.Set(val.Key, val.Value)
}
if err := vars.ResolveValues(); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// Parse CLI --env flag env vars, define $SUP_ENV and override values defined in Supfile.
var cliVars sup.EnvList
for _, env := range envVars {
if len(env) == 0 {
continue
}
i := strings.Index(env, "=")
if i < 0 {
if len(env) > 0 {
vars.Set(env, "")
}
continue
}
vars.Set(env[:i], env[i+1:])
cliVars.Set(env[:i], env[i+1:])
}
// SUP_ENV is generated only from CLI env vars.
// Separate loop to omit duplicates.
supEnv := ""
for _, v := range cliVars {
supEnv += fmt.Sprintf(" -e %v=%q", v.Key, v.Value)
}
vars.Set("SUP_ENV", strings.TrimSpace(supEnv))
// Create new Stackup app.
app, err := sup.New(conf)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
app.Debug(debug)
app.Prefix(!disablePrefix)
// Run all the commands in the given network.
err = app.Run(network, vars, commands...)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}

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vendor/github.com/pressly/sup/colors.go generated vendored Normal file
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package sup
var (
Colors = []string{
"\033[32m", // green
"\033[33m", // yellow
"\033[36m", // cyan
"\033[35m", // magenta
"\033[31m", // red
"\033[34m", // blue
}
ResetColor = "\033[0m"
)

27
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require "language/go"
class Sup < Formula
desc "Stack Up. Super simple deployment tool - think of it like 'make' for a network of servers."
homepage "https://github.com/pressly/sup"
url "https://github.com/pressly/sup/archive/4ee5083c8321340bc2a6410f24d8a760f7ad3847.zip"
version "0.3.1"
sha256 "7fa17c20fdcd9e24d8c2fe98081e1300e936da02b3f2cf9c5a11fd699cbc487e"
depends_on "go" => :build
def install
ENV["GOBIN"] = bin
ENV["GOPATH"] = buildpath
ENV["GOHOME"] = buildpath
mkdir_p buildpath/"src/github.com/pressly/"
ln_sf buildpath, buildpath/"src/github.com/pressly/sup"
Language::Go.stage_deps resources, buildpath/"src"
system "go", "build", "-o", bin/"sup", "./cmd/sup"
end
test do
assert_equal "0.3", shell_output("#{bin}/bin/sup")
end
end

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#FROM scratch
#FROM gliderlabs/alpine:3.1
#FORM ubuntu_lean # https://blog.jtlebi.fr/2015/04/25/how-i-shrunk-a-docker-image-by-98-8-featuring-fanotify/
FROM ubuntu:14.04
#RUN apt-get update && apt-get install --no-install-recommends -y \
# ca-certificates
COPY ./example /usr/bin/
EXPOSE 8000
CMD ["/usr/bin/example"]

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# Supfile for "Example" Docker service
---
version: 0.4
env:
# Environment variables for all commands
NAME: example
REPO: github.com/pressly/sup
BRANCH: master
IMAGE: pressly/example
HOST_PORT: 8000
CONTAINER_PORT: 8000
networks:
# Groups of hosts
local:
hosts:
- localhost
dev:
env:
# Extra environment variable for dev hosts only
DOCKER_HOST: tcp://127.0.0.1:2375
hosts:
- docker@192.168.59.103
stg:
hosts:
- ubuntu@stg.example.com
prod:
inventory: for i in 1 2 3 4; do echo "ubuntu@prod$i.example.com"; done
commands:
# Named set of commands to be run remotely
ping:
desc: Print uname and current date/time.
run: uname -a; date
pre-build:
desc: Initialize directory
run: mkdir -p /tmp/$IMAGE
mytest:
run: echo $SUP_TIME
build:
desc: Build Docker image from current directory, push to Docker Hub
# local: sup $SUP_ENV -f ./builder/Supfile $SUP_NETWORK build
upload:
- src: ./
dst: /tmp/$IMAGE
script: ./scripts/docker-build.sh
once: true
pull:
desc: Pull latest Docker image
run: sudo docker pull $IMAGE
config:
desc: Upload/test config file.
upload:
- src: ./example.$SUP_NETWORK.cfg
dst: /tmp/
run: test -f /tmp/example.$SUP_NETWORK.cfg
stop:
desc: Stop Docker container
run: sudo docker stop $NAME || exit 0
rm:
desc: Remove Docker container
run: sudo docker rm $NAME || exit 0
start:
desc: Start a stopped Docker container
run: sudo docker start $NAME || exit 0
run:
desc: Run Docker container
run: >
sudo docker run -d \
-p $HOST_PORT:$CONTAINER_PORT \
-v /tmp/example.$SUP_NETWORK.cfg:/etc/example.cfg \
--restart=always \
--name $NAME $IMAGE
restart:
desc: Restart Docker container
run: sudo docker restart $NAME || exit 0
stop-rm-run:
desc: Rolling update (stop & remove old Docker container, run new one)
run: >
sudo docker stop $NAME || :; \
sudo docker rm $NAME || :; \
sudo docker run -d \
-p $HOST_PORT:$CONTAINER_PORT \
-v /tmp/example.$SUP_NETWORK.cfg:/etc/example.cfg \
--restart=always \
--name $NAME $IMAGE
serial: 1
ps:
desc: List running Docker containers
run: sudo docker ps | grep $NAME
logs:
desc: Docker logs
run: sudo docker logs $NAME
tail-logs:
desc: Tail Docker logs
run: sudo docker logs --tail=20 -f $NAME
health:
desc: Application health check
run: curl localhost:$HOST_PORT
slack-notify:
desc: Notify Slack about new deployment
local: >
curl -X POST --data-urlencode 'payload={"channel": "#_team_", "text": "['$SUP_NETWORK'] '$SUP_USER' deployed '$NAME'"}' \
https://hooks.slack.com/services/X/Y/Z
bash:
desc: Interactive shell on all hosts
stdin: true
run: bash
exec:
desc: Interactive docker exec on all hosts
stdin: true
run: sudo docker exec -i $NAME bash
targets: # Aliases to run multiple commands at once
deploy:
- pre-build
- build
- pull
- config
- stop-rm-run
- ps
- logs
- health
- slack-notify

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vendor/github.com/pressly/sup/example/example.dev.cfg generated vendored Normal file
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development

25
vendor/github.com/pressly/sup/example/example.go generated vendored Normal file
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package main
import (
"io/ioutil"
"log"
"net/http"
)
func main() {
config, err := ioutil.ReadFile("/etc/example.cfg")
if err != nil {
log.Fatal(err)
}
// Define handler that returns "Hello $ENV"
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("Hello "))
w.Write(config)
})
err = http.ListenAndServe(":8000", nil)
if err != nil {
log.Fatal(err)
}
}

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vendor/github.com/pressly/sup/example/example.local.cfg generated vendored Normal file
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local

1
vendor/github.com/pressly/sup/example/example.prod.cfg generated vendored Normal file
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production

1
vendor/github.com/pressly/sup/example/example.stg.cfg generated vendored Normal file
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staging

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vendor/github.com/pressly/sup/example/scripts/docker-build.sh generated vendored Normal file
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#!/bin/bash
set -e
cd /tmp/$IMAGE
# Cleanup.
sudo rm -rf bin
# Bulder image. Build binaries (make dist) into bin/ dir.
sudo docker run --rm \
-v $(pwd):/go/src/$REPO/$NAME \
-w /go/src/$REPO/$NAME \
golang:1.5.2 go build
# Bake bin/* into the resulting image.
sudo docker build --no-cache -t $IMAGE .
sudo docker push $IMAGE

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package sup
import (
"fmt"
"io"
"os"
"os/exec"
"os/user"
"github.com/pkg/errors"
)
// Client is a wrapper over the SSH connection/sessions.
type LocalhostClient struct {
cmd *exec.Cmd
user string
stdin io.WriteCloser
stdout io.Reader
stderr io.Reader
running bool
env string //export FOO="bar"; export BAR="baz";
}
func (c *LocalhostClient) Connect(_ string) error {
u, err := user.Current()
if err != nil {
return err
}
c.user = u.Username
return nil
}
func (c *LocalhostClient) Run(task *Task) error {
var err error
if c.running {
return fmt.Errorf("Command already running")
}
cmd := exec.Command("bash", "-c", c.env+task.Run)
c.cmd = cmd
c.stdout, err = cmd.StdoutPipe()
if err != nil {
return err
}
c.stderr, err = cmd.StderrPipe()
if err != nil {
return err
}
c.stdin, err = cmd.StdinPipe()
if err != nil {
return err
}
if err := c.cmd.Start(); err != nil {
return ErrTask{task, err.Error()}
}
c.running = true
return nil
}
func (c *LocalhostClient) Wait() error {
if !c.running {
return fmt.Errorf("Trying to wait on stopped command")
}
err := c.cmd.Wait()
c.running = false
return err
}
func (c *LocalhostClient) Close() error {
return nil
}
func (c *LocalhostClient) Stdin() io.WriteCloser {
return c.stdin
}
func (c *LocalhostClient) Stderr() io.Reader {
return c.stderr
}
func (c *LocalhostClient) Stdout() io.Reader {
return c.stdout
}
func (c *LocalhostClient) Prefix() (string, int) {
host := c.user + "@localhost" + " | "
return ResetColor + host, len(host)
}
func (c *LocalhostClient) Write(p []byte) (n int, err error) {
return c.stdin.Write(p)
}
func (c *LocalhostClient) WriteClose() error {
return c.stdin.Close()
}
func (c *LocalhostClient) Signal(sig os.Signal) error {
return c.cmd.Process.Signal(sig)
}
func ResolveLocalPath(cwd, path, env string) (string, error) {
// Check if file exists first. Use bash to resolve $ENV_VARs.
cmd := exec.Command("bash", "-c", env+"echo -n "+path)
cmd.Dir = cwd
resolvedFilename, err := cmd.Output()
if err != nil {
return "", errors.Wrap(err, "resolving path failed")
}
return string(resolvedFilename), nil
}

294
vendor/github.com/pressly/sup/ssh.go generated vendored Normal file
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package sup
import (
"fmt"
"io"
"io/ioutil"
"net"
"os"
"os/user"
"path/filepath"
"strings"
"sync"
"golang.org/x/crypto/ssh"
"golang.org/x/crypto/ssh/agent"
)
// Client is a wrapper over the SSH connection/sessions.
type SSHClient struct {
conn *ssh.Client
sess *ssh.Session
user string
host string
remoteStdin io.WriteCloser
remoteStdout io.Reader
remoteStderr io.Reader
connOpened bool
sessOpened bool
running bool
env string //export FOO="bar"; export BAR="baz";
color string
}
type ErrConnect struct {
User string
Host string
Reason string
}
func (e ErrConnect) Error() string {
return fmt.Sprintf(`Connect("%v@%v"): %v`, e.User, e.Host, e.Reason)
}
// parseHost parses and normalizes <user>@<host:port> from a given string.
func (c *SSHClient) parseHost(host string) error {
c.host = host
// Remove extra "ssh://" schema
if len(c.host) > 6 && c.host[:6] == "ssh://" {
c.host = c.host[6:]
}
if at := strings.Index(c.host, "@"); at != -1 {
c.user = c.host[:at]
c.host = c.host[at+1:]
}
// Add default user, if not set
if c.user == "" {
u, err := user.Current()
if err != nil {
return err
}
c.user = u.Username
}
if strings.Index(c.host, "/") != -1 {
return ErrConnect{c.user, c.host, "unexpected slash in the host URL"}
}
// Add default port, if not set
if strings.Index(c.host, ":") == -1 {
c.host += ":22"
}
return nil
}
var initAuthMethodOnce sync.Once
var authMethod ssh.AuthMethod
// initAuthMethod initiates SSH authentication method.
func initAuthMethod() {
var signers []ssh.Signer
// If there's a running SSH Agent, try to use its Private keys.
sock, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK"))
if err == nil {
agent := agent.NewClient(sock)
signers, _ = agent.Signers()
}
// Try to read user's SSH private keys form the standard paths.
files, _ := filepath.Glob(os.Getenv("HOME") + "/.ssh/id_*")
for _, file := range files {
if strings.HasSuffix(file, ".pub") {
continue // Skip public keys.
}
data, err := ioutil.ReadFile(file)
if err != nil {
continue
}
signer, err := ssh.ParsePrivateKey(data)
if err != nil {
continue
}
signers = append(signers, signer)
}
authMethod = ssh.PublicKeys(signers...)
}
// SSHDialFunc can dial an ssh server and return a client
type SSHDialFunc func(net, addr string, config *ssh.ClientConfig) (*ssh.Client, error)
// Connect creates SSH connection to a specified host.
// It expects the host of the form "[ssh://]host[:port]".
func (c *SSHClient) Connect(host string) error {
return c.ConnectWith(host, ssh.Dial)
}
// ConnectWith creates a SSH connection to a specified host. It will use dialer to establish the
// connection.
// TODO: Split Signers to its own method.
func (c *SSHClient) ConnectWith(host string, dialer SSHDialFunc) error {
if c.connOpened {
return fmt.Errorf("Already connected")
}
initAuthMethodOnce.Do(initAuthMethod)
err := c.parseHost(host)
if err != nil {
return err
}
config := &ssh.ClientConfig{
User: c.user,
Auth: []ssh.AuthMethod{
authMethod,
},
}
c.conn, err = dialer("tcp", c.host, config)
if err != nil {
return ErrConnect{c.user, c.host, err.Error()}
}
c.connOpened = true
return nil
}
// Run runs the task.Run command remotely on c.host.
func (c *SSHClient) Run(task *Task) error {
if c.running {
return fmt.Errorf("Session already running")
}
if c.sessOpened {
return fmt.Errorf("Session already connected")
}
sess, err := c.conn.NewSession()
if err != nil {
return err
}
c.remoteStdin, err = sess.StdinPipe()
if err != nil {
return err
}
c.remoteStdout, err = sess.StdoutPipe()
if err != nil {
return err
}
c.remoteStderr, err = sess.StderrPipe()
if err != nil {
return err
}
if task.TTY {
// Set up terminal modes
modes := ssh.TerminalModes{
ssh.ECHO: 0, // disable echoing
ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud
ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud
}
// Request pseudo terminal
if err := sess.RequestPty("xterm", 80, 40, modes); err != nil {
return ErrTask{task, fmt.Sprintf("request for pseudo terminal failed: %s", err)}
}
}
// Start the remote command.
if err := sess.Start(c.env + task.Run); err != nil {
return ErrTask{task, err.Error()}
}
c.sess = sess
c.sessOpened = true
c.running = true
return nil
}
// Wait waits until the remote command finishes and exits.
// It closes the SSH session.
func (c *SSHClient) Wait() error {
if !c.running {
return fmt.Errorf("Trying to wait on stopped session")
}
err := c.sess.Wait()
c.sess.Close()
c.running = false
c.sessOpened = false
return err
}
// DialThrough will create a new connection from the ssh server sc is connected to. DialThrough is an SSHDialer.
func (sc *SSHClient) DialThrough(net, addr string, config *ssh.ClientConfig) (*ssh.Client, error) {
conn, err := sc.conn.Dial(net, addr)
if err != nil {
return nil, err
}
c, chans, reqs, err := ssh.NewClientConn(conn, addr, config)
if err != nil {
return nil, err
}
return ssh.NewClient(c, chans, reqs), nil
}
// Close closes the underlying SSH connection and session.
func (c *SSHClient) Close() error {
if c.sessOpened {
c.sess.Close()
c.sessOpened = false
}
if !c.connOpened {
return fmt.Errorf("Trying to close the already closed connection")
}
err := c.conn.Close()
c.connOpened = false
c.running = false
return err
}
func (c *SSHClient) Stdin() io.WriteCloser {
return c.remoteStdin
}
func (c *SSHClient) Stderr() io.Reader {
return c.remoteStderr
}
func (c *SSHClient) Stdout() io.Reader {
return c.remoteStdout
}
func (c *SSHClient) Prefix() (string, int) {
host := c.user + "@" + c.host + " | "
return c.color + host + ResetColor, len(host)
}
func (c *SSHClient) Write(p []byte) (n int, err error) {
return c.remoteStdin.Write(p)
}
func (c *SSHClient) WriteClose() error {
return c.remoteStdin.Close()
}
func (c *SSHClient) Signal(sig os.Signal) error {
if !c.sessOpened {
return fmt.Errorf("session is not open")
}
switch sig {
case os.Interrupt:
// TODO: Turns out that .Signal(ssh.SIGHUP) doesn't work for me.
// Instead, sending \x03 to the remote session works for me,
// which sounds like something that should be fixed/resolved
// upstream in the golang.org/x/crypto/ssh pkg.
// https://github.com/golang/go/issues/4115#issuecomment-66070418
c.remoteStdin.Write([]byte("\x03"))
return c.sess.Signal(ssh.SIGINT)
default:
return fmt.Errorf("%v not supported", sig)
}
}

249
vendor/github.com/pressly/sup/sup.go generated vendored Normal file
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@ -0,0 +1,249 @@
package sup
import (
"fmt"
"io"
"os"
"os/signal"
"strings"
"sync"
"github.com/goware/prefixer"
"github.com/pkg/errors"
"golang.org/x/crypto/ssh"
)
const VERSION = "0.5"
type Stackup struct {
conf *Supfile
debug bool
prefix bool
}
func New(conf *Supfile) (*Stackup, error) {
return &Stackup{
conf: conf,
}, nil
}
// Run runs set of commands on multiple hosts defined by network sequentially.
// TODO: This megamoth method needs a big refactor and should be split
// to multiple smaller methods.
func (sup *Stackup) Run(network *Network, envVars EnvList, commands ...*Command) error {
if len(commands) == 0 {
return errors.New("no commands to be run")
}
env := envVars.AsExport()
// Create clients for every host (either SSH or Localhost).
var bastion *SSHClient
if network.Bastion != "" {
bastion = &SSHClient{}
if err := bastion.Connect(network.Bastion); err != nil {
return errors.Wrap(err, "connecting to bastion failed")
}
}
var wg sync.WaitGroup
clientCh := make(chan Client, len(network.Hosts))
errCh := make(chan error, len(network.Hosts))
for i, host := range network.Hosts {
wg.Add(1)
go func(i int, host string) {
defer wg.Done()
// Localhost client.
if host == "localhost" {
local := &LocalhostClient{
env: env + `export SUP_HOST="` + host + `";`,
}
if err := local.Connect(host); err != nil {
errCh <- errors.Wrap(err, "connecting to localhost failed")
return
}
clientCh <- local
return
}
// SSH client.
remote := &SSHClient{
env: env + `export SUP_HOST="` + host + `";`,
user: network.User,
color: Colors[i%len(Colors)],
}
if bastion != nil {
if err := remote.ConnectWith(host, bastion.DialThrough); err != nil {
errCh <- errors.Wrap(err, "connecting to remote host through bastion failed")
return
}
} else {
if err := remote.Connect(host); err != nil {
errCh <- errors.Wrap(err, "connecting to remote host failed")
return
}
}
clientCh <- remote
}(i, host)
}
wg.Wait()
close(clientCh)
close(errCh)
maxLen := 0
var clients []Client
for client := range clientCh {
if remote, ok := client.(*SSHClient); ok {
defer remote.Close()
}
_, prefixLen := client.Prefix()
if prefixLen > maxLen {
maxLen = prefixLen
}
clients = append(clients, client)
}
for err := range errCh {
return errors.Wrap(err, "connecting to clients failed")
}
// Run command or run multiple commands defined by target sequentially.
for _, cmd := range commands {
// Translate command into task(s).
tasks, err := sup.createTasks(cmd, clients, env)
if err != nil {
return errors.Wrap(err, "creating task failed")
}
// Run tasks sequentially.
for _, task := range tasks {
var writers []io.Writer
var wg sync.WaitGroup
// Run tasks on the provided clients.
for _, c := range task.Clients {
var prefix string
var prefixLen int
if sup.prefix {
prefix, prefixLen = c.Prefix()
if len(prefix) < maxLen { // Left padding.
prefix = strings.Repeat(" ", maxLen-prefixLen) + prefix
}
}
err := c.Run(task)
if err != nil {
return errors.Wrap(err, prefix+"task failed")
}
// Copy over tasks's STDOUT.
wg.Add(1)
go func(c Client) {
defer wg.Done()
_, err := io.Copy(os.Stdout, prefixer.New(c.Stdout(), prefix))
if err != nil && err != io.EOF {
// TODO: io.Copy() should not return io.EOF at all.
// Upstream bug? Or prefixer.WriteTo() bug?
fmt.Fprintf(os.Stderr, "%v", errors.Wrap(err, prefix+"reading STDOUT failed"))
}
}(c)
// Copy over tasks's STDERR.
wg.Add(1)
go func(c Client) {
defer wg.Done()
_, err := io.Copy(os.Stderr, prefixer.New(c.Stderr(), prefix))
if err != nil && err != io.EOF {
fmt.Fprintf(os.Stderr, "%v", errors.Wrap(err, prefix+"reading STDERR failed"))
}
}(c)
writers = append(writers, c.Stdin())
}
// Copy over task's STDIN.
if task.Input != nil {
go func() {
writer := io.MultiWriter(writers...)
_, err := io.Copy(writer, task.Input)
if err != nil && err != io.EOF {
fmt.Fprintf(os.Stderr, "%v", errors.Wrap(err, "copying STDIN failed"))
}
// TODO: Use MultiWriteCloser (not in Stdlib), so we can writer.Close() instead?
for _, c := range clients {
c.WriteClose()
}
}()
}
// Catch OS signals and pass them to all active clients.
trap := make(chan os.Signal, 1)
signal.Notify(trap, os.Interrupt)
go func() {
for {
select {
case sig, ok := <-trap:
if !ok {
return
}
for _, c := range task.Clients {
err := c.Signal(sig)
if err != nil {
fmt.Fprintf(os.Stderr, "%v", errors.Wrap(err, "sending signal failed"))
}
}
}
}
}()
// Wait for all I/O operations first.
wg.Wait()
// Make sure each client finishes the task, return on failure.
for _, c := range task.Clients {
wg.Add(1)
go func(c Client) {
defer wg.Done()
if err := c.Wait(); err != nil {
var prefix string
if sup.prefix {
var prefixLen int
prefix, prefixLen = c.Prefix()
if len(prefix) < maxLen { // Left padding.
prefix = strings.Repeat(" ", maxLen-prefixLen) + prefix
}
}
if e, ok := err.(*ssh.ExitError); ok && e.ExitStatus() != 15 {
// TODO: Store all the errors, and print them after Wait().
fmt.Fprintf(os.Stderr, "%s%v\n", prefix, e)
os.Exit(e.ExitStatus())
}
fmt.Fprintf(os.Stderr, "%s%v\n", prefix, err)
// TODO: Shouldn't os.Exit(1) here. Instead, collect the exit statuses for later.
os.Exit(1)
}
}(c)
}
// Wait for all commands to finish.
wg.Wait()
// Stop catching signals for the currently active clients.
signal.Stop(trap)
close(trap)
}
}
return nil
}
func (sup *Stackup) Debug(value bool) {
sup.debug = value
}
func (sup *Stackup) Prefix(value bool) {
sup.prefix = value
}

366
vendor/github.com/pressly/sup/supfile.go generated vendored Normal file
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package sup
import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
"strings"
"github.com/pkg/errors"
"gopkg.in/yaml.v2"
)
// Supfile represents the Stack Up configuration YAML file.
type Supfile struct {
Networks Networks `yaml:"networks"`
Commands Commands `yaml:"commands"`
Targets Targets `yaml:"targets"`
Env EnvList `yaml:"env"`
Version string `yaml:"version"`
}
// Network is group of hosts with extra custom env vars.
type Network struct {
Env EnvList `yaml:"env"`
Inventory string `yaml:"inventory"`
Hosts []string `yaml:"hosts"`
Bastion string `yaml:"bastion"` // Jump host for the environment
// Should these live on Hosts too? We'd have to change []string to struct, even in Supfile.
User string // `yaml:"user"`
IdentityFile string // `yaml:"identity_file"`
}
// Networks is a list of user-defined networks
type Networks struct {
Names []string
nets map[string]Network
}
func (n *Networks) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal(&n.nets)
if err != nil {
return err
}
var items yaml.MapSlice
err = unmarshal(&items)
if err != nil {
return err
}
n.Names = make([]string, len(items))
for i, item := range items {
n.Names[i] = item.Key.(string)
}
return nil
}
func (n *Networks) Get(name string) (Network, bool) {
net, ok := n.nets[name]
return net, ok
}
// Command represents command(s) to be run remotely.
type Command struct {
Name string `yaml:"-"` // Command name.
Desc string `yaml:"desc"` // Command description.
Local string `yaml:"local"` // Command(s) to be run locally.
Run string `yaml:"run"` // Command(s) to be run remotelly.
Script string `yaml:"script"` // Load command(s) from script and run it remotelly.
Upload []Upload `yaml:"upload"` // See Upload struct.
Stdin bool `yaml:"stdin"` // Attach localhost STDOUT to remote commands' STDIN?
Once bool `yaml:"once"` // The command should be run "once" (on one host only).
Serial int `yaml:"serial"` // Max number of clients processing a task in parallel.
// API backward compatibility. Will be deprecated in v1.0.
RunOnce bool `yaml:"run_once"` // The command should be run once only.
}
// Commands is a list of user-defined commands
type Commands struct {
Names []string
cmds map[string]Command
}
func (c *Commands) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal(&c.cmds)
if err != nil {
return err
}
var items yaml.MapSlice
err = unmarshal(&items)
if err != nil {
return err
}
c.Names = make([]string, len(items))
for i, item := range items {
c.Names[i] = item.Key.(string)
}
return nil
}
func (c *Commands) Get(name string) (Command, bool) {
cmd, ok := c.cmds[name]
return cmd, ok
}
// Targets is a list of user-defined targets
type Targets struct {
Names []string
targets map[string][]string
}
func (t *Targets) UnmarshalYAML(unmarshal func(interface{}) error) error {
err := unmarshal(&t.targets)
if err != nil {
return err
}
var items yaml.MapSlice
err = unmarshal(&items)
if err != nil {
return err
}
t.Names = make([]string, len(items))
for i, item := range items {
t.Names[i] = item.Key.(string)
}
return nil
}
func (t *Targets) Get(name string) ([]string, bool) {
cmds, ok := t.targets[name]
return cmds, ok
}
// Upload represents file copy operation from localhost Src path to Dst
// path of every host in a given Network.
type Upload struct {
Src string `yaml:"src"`
Dst string `yaml:"dst"`
Exc string `yaml:"exclude"`
}
// EnvVar represents an environment variable
type EnvVar struct {
Key string
Value string
}
func (e EnvVar) String() string {
return e.Key + `=` + e.Value
}
// AsExport returns the environment variable as a bash export statement
func (e EnvVar) AsExport() string {
return `export ` + e.Key + `="` + e.Value + `";`
}
// EnvList is a list of environment variables that maps to a YAML map,
// but maintains order, enabling late variables to reference early variables.
type EnvList []*EnvVar
func (e EnvList) Slice() []string {
envs := make([]string, len(e))
for i, env := range e {
envs[i] = env.String()
}
return envs
}
func (e *EnvList) UnmarshalYAML(unmarshal func(interface{}) error) error {
items := []yaml.MapItem{}
err := unmarshal(&items)
if err != nil {
return err
}
*e = make(EnvList, 0, len(items))
for _, v := range items {
e.Set(fmt.Sprintf("%v", v.Key), fmt.Sprintf("%v", v.Value))
}
return nil
}
// Set key to be equal value in this list.
func (e *EnvList) Set(key, value string) {
for i, v := range *e {
if v.Key == key {
(*e)[i].Value = value
return
}
}
*e = append(*e, &EnvVar{
Key: key,
Value: value,
})
}
func (e *EnvList) ResolveValues() error {
if len(*e) == 0 {
return nil
}
exports := ""
for i, v := range *e {
exports += v.AsExport()
cmd := exec.Command("bash", "-c", exports+"echo -n "+v.Value+";")
cwd, err := os.Getwd()
if err != nil {
return err
}
cmd.Dir = cwd
resolvedValue, err := cmd.Output()
if err != nil {
return errors.Wrapf(err, "resolving env var %v failed", v.Key)
}
(*e)[i].Value = string(resolvedValue)
}
return nil
}
func (e *EnvList) AsExport() string {
// Process all ENVs into a string of form
// `export FOO="bar"; export BAR="baz";`.
exports := ``
for _, v := range *e {
exports += v.AsExport() + " "
}
return exports
}
type ErrMustUpdate struct {
Msg string
}
type ErrUnsupportedSupfileVersion struct {
Msg string
}
func (e ErrMustUpdate) Error() string {
return fmt.Sprintf("%v\n\nPlease update sup by `go get -u github.com/pressly/sup/cmd/sup`", e.Msg)
}
func (e ErrUnsupportedSupfileVersion) Error() string {
return fmt.Sprintf("%v\n\nCheck your Supfile version (available latest version: v0.5)", e.Msg)
}
// NewSupfile parses configuration file and returns Supfile or error.
func NewSupfile(data []byte) (*Supfile, error) {
var conf Supfile
if err := yaml.Unmarshal(data, &conf); err != nil {
return nil, err
}
// API backward compatibility. Will be deprecated in v1.0.
switch conf.Version {
case "":
conf.Version = "0.1"
fallthrough
case "0.1":
for _, cmd := range conf.Commands.cmds {
if cmd.RunOnce {
return nil, ErrMustUpdate{"command.run_once is not supported in Supfile v" + conf.Version}
}
}
fallthrough
case "0.2":
for _, cmd := range conf.Commands.cmds {
if cmd.Once {
return nil, ErrMustUpdate{"command.once is not supported in Supfile v" + conf.Version}
}
if cmd.Local != "" {
return nil, ErrMustUpdate{"command.local is not supported in Supfile v" + conf.Version}
}
if cmd.Serial != 0 {
return nil, ErrMustUpdate{"command.serial is not supported in Supfile v" + conf.Version}
}
}
for _, network := range conf.Networks.nets {
if network.Inventory != "" {
return nil, ErrMustUpdate{"network.inventory is not supported in Supfile v" + conf.Version}
}
}
fallthrough
case "0.3":
var warning string
for key, cmd := range conf.Commands.cmds {
if cmd.RunOnce {
warning = "Warning: command.run_once was deprecated by command.once in Supfile v" + conf.Version + "\n"
cmd.Once = true
conf.Commands.cmds[key] = cmd
}
}
if warning != "" {
fmt.Fprintf(os.Stderr, warning)
}
fallthrough
case "0.4", "0.5":
default:
return nil, ErrUnsupportedSupfileVersion{"unsupported Supfile version " + conf.Version}
}
return &conf, nil
}
// ParseInventory runs the inventory command, if provided, and appends
// the command's output lines to the manually defined list of hosts.
func (n Network) ParseInventory() ([]string, error) {
if n.Inventory == "" {
return nil, nil
}
cmd := exec.Command("/bin/sh", "-c", n.Inventory)
cmd.Env = os.Environ()
cmd.Env = append(cmd.Env, n.Env.Slice()...)
cmd.Stderr = os.Stderr
output, err := cmd.Output()
if err != nil {
return nil, err
}
var hosts []string
buf := bytes.NewBuffer(output)
for {
host, err := buf.ReadString('\n')
if err != nil {
if err == io.EOF {
break
}
return nil, err
}
host = strings.TrimSpace(host)
// skip empty lines and comments
if host == "" || host[:1] == "#" {
continue
}
hosts = append(hosts, host)
}
return hosts, nil
}

53
vendor/github.com/pressly/sup/tar.go generated vendored Normal file
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@ -0,0 +1,53 @@
package sup
import (
"fmt"
"io"
"os/exec"
"strings"
"github.com/pkg/errors"
)
// Copying dirs/files over SSH using TAR.
// tar -C . -cvzf - $SRC | ssh $HOST "tar -C $DST -xvzf -"
// RemoteTarCommand returns command to be run on remote SSH host
// to properly receive the created TAR stream.
// TODO: Check for relative directory.
func RemoteTarCommand(dir string) string {
return fmt.Sprintf("tar -C \"%s\" -xzf -", dir)
}
func LocalTarCmdArgs(path, exclude string) []string {
args := []string{}
// Added pattens to exclude from tar compress
excludes := strings.Split(exclude, ",")
for _, exclude := range excludes {
trimmed := strings.TrimSpace(exclude)
if trimmed != "" {
args = append(args, `--exclude=`+trimmed)
}
}
args = append(args, "-C", ".", "-czf", "-", path)
return args
}
// NewTarStreamReader creates a tar stream reader from a local path.
// TODO: Refactor. Use "archive/tar" instead.
func NewTarStreamReader(cwd, path, exclude string) (io.Reader, error) {
cmd := exec.Command("tar", LocalTarCmdArgs(path, exclude)...)
cmd.Dir = cwd
stdout, err := cmd.StdoutPipe()
if err != nil {
return nil, errors.Wrap(err, "tar: stdout pipe failed")
}
if err := cmd.Start(); err != nil {
return nil, errors.Wrap(err, "tar: starting cmd failed")
}
return stdout, nil
}

168
vendor/github.com/pressly/sup/task.go generated vendored Normal file
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@ -0,0 +1,168 @@
package sup
import (
"fmt"
"io"
"io/ioutil"
"os"
"github.com/pkg/errors"
)
// Task represents a set of commands to be run.
type Task struct {
Run string
Input io.Reader
Clients []Client
TTY bool
}
func (sup *Stackup) createTasks(cmd *Command, clients []Client, env string) ([]*Task, error) {
var tasks []*Task
cwd, err := os.Getwd()
if err != nil {
return nil, errors.Wrap(err, "resolving CWD failed")
}
// Anything to upload?
for _, upload := range cmd.Upload {
uploadFile, err := ResolveLocalPath(cwd, upload.Src, env)
if err != nil {
return nil, errors.Wrap(err, "upload: "+upload.Src)
}
uploadTarReader, err := NewTarStreamReader(cwd, uploadFile, upload.Exc)
if err != nil {
return nil, errors.Wrap(err, "upload: "+upload.Src)
}
task := Task{
Run: RemoteTarCommand(upload.Dst),
Input: uploadTarReader,
TTY: false,
}
if cmd.Once {
task.Clients = []Client{clients[0]}
tasks = append(tasks, &task)
} else if cmd.Serial > 0 {
// Each "serial" task client group is executed sequentially.
for i := 0; i < len(clients); i += cmd.Serial {
j := i + cmd.Serial
if j > len(clients) {
j = len(clients)
}
copy := task
copy.Clients = clients[i:j]
tasks = append(tasks, &copy)
}
} else {
task.Clients = clients
tasks = append(tasks, &task)
}
}
// Script. Read the file as a multiline input command.
if cmd.Script != "" {
f, err := os.Open(cmd.Script)
if err != nil {
return nil, errors.Wrap(err, "can't open script")
}
data, err := ioutil.ReadAll(f)
if err != nil {
return nil, errors.Wrap(err, "can't read script")
}
task := Task{
Run: string(data),
TTY: true,
}
if sup.debug {
task.Run = "set -x;" + task.Run
}
if cmd.Stdin {
task.Input = os.Stdin
}
if cmd.Once {
task.Clients = []Client{clients[0]}
tasks = append(tasks, &task)
} else if cmd.Serial > 0 {
// Each "serial" task client group is executed sequentially.
for i := 0; i < len(clients); i += cmd.Serial {
j := i + cmd.Serial
if j > len(clients) {
j = len(clients)
}
copy := task
copy.Clients = clients[i:j]
tasks = append(tasks, &copy)
}
} else {
task.Clients = clients
tasks = append(tasks, &task)
}
}
// Local command.
if cmd.Local != "" {
local := &LocalhostClient{
env: env + `export SUP_HOST="localhost";`,
}
local.Connect("localhost")
task := &Task{
Run: cmd.Local,
Clients: []Client{local},
TTY: true,
}
if sup.debug {
task.Run = "set -x;" + task.Run
}
if cmd.Stdin {
task.Input = os.Stdin
}
tasks = append(tasks, task)
}
// Remote command.
if cmd.Run != "" {
task := Task{
Run: cmd.Run,
TTY: true,
}
if sup.debug {
task.Run = "set -x;" + task.Run
}
if cmd.Stdin {
task.Input = os.Stdin
}
if cmd.Once {
task.Clients = []Client{clients[0]}
tasks = append(tasks, &task)
} else if cmd.Serial > 0 {
// Each "serial" task client group is executed sequentially.
for i := 0; i < len(clients); i += cmd.Serial {
j := i + cmd.Serial
if j > len(clients) {
j = len(clients)
}
copy := task
copy.Clients = clients[i:j]
tasks = append(tasks, &copy)
}
} else {
task.Clients = clients
tasks = append(tasks, &task)
}
}
return tasks, nil
}
type ErrTask struct {
Task *Task
Reason string
}
func (e ErrTask) Error() string {
return fmt.Sprintf(`Run("%v"): %v`, e.Task, e.Reason)
}