Merge pull request #3 from vulcanize/cmd_line

Cmd line

.gitignore

@@ -7,3 +7,5 @@ environments/*.toml
 Vagrantfile
 vagrant_bootstrap.sh
 .vagrant
+test_scripts/
+vulcanizedb

.travis.yml

@@ -7,12 +7,11 @@ services:
 addons:
   postgresql: "9.6"
 
+go_import_path: github.com/vulcanize/vulcanizedb
+
 before_install:
-  # godo
-  - go get -u gopkg.in/godo.v2/cmd/godo
   # dep
   - go get -u github.com/golang/dep/cmd/dep
-  - dep ensure
   # ginkgo
   - go get -u github.com/onsi/ginkgo/ginkgo
   # migrate
@@ -30,7 +29,7 @@ install:
 before_script:
   - ./scripts/setup
   - nohup ./scripts/start_private_blockchain </dev/null &
-  - godo migrate -- -e private
+  - make migrate HOST_NAME=localhost NAME=vulcanize_private PORT=5432
 
 script:
   - ginkgo -r

Gododir/main.go

@@ -1,109 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"fmt"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/config"
-	do "gopkg.in/godo.v2"
-)
-
-func parseEnvironment(context *do.Context) string {
-	environment := context.Args.MayString("", "environment", "env", "e")
-	if environment == "" {
-		log.Fatalln("--environment required")
-	}
-	return environment
-}
-
-func tasks(p *do.Project) {
-
-	p.Task("run", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		context.Start(`go run main.go --environment={{.environment}}`,
-			do.M{"environment": environment, "$in": "cmd/run"})
-	})
-
-	p.Task("vulcanizeDb", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		context.Start(`go run main.go --environment={{.environment}}`,
-			do.M{"environment": environment, "$in": "cmd/vulcanize_db"})
-	})
-
-	p.Task("populateBlocks", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		startingNumber := context.Args.MayInt(-1, "starting-number")
-		if startingNumber < 0 {
-			log.Fatalln("--starting-number required")
-		}
-		context.Start(`go run main.go --environment={{.environment}} --starting-number={{.startingNumber}}`,
-			do.M{"environment": environment, "startingNumber": startingNumber, "$in": "cmd/populate_blocks"})
-	})
-
-	p.Task("getLogs", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		contractHash := context.Args.MayString("", "contract-hash", "c")
-		if contractHash == "" {
-			log.Fatalln("--contract-hash required")
-		}
-		context.Start(`go run main.go --environment={{.environment}} --contract-hash={{.contractHash}}`,
-			do.M{
-				"environment":  environment,
-				"contractHash": contractHash,
-				"$in":          "cmd/get_logs",
-			})
-	})
-
-	p.Task("watchContract", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		contractHash := context.Args.MayString("", "contract-hash", "c")
-		abiFilepath := context.Args.MayString("", "abi-filepath", "a")
-		if contractHash == "" {
-			log.Fatalln("--contract-hash required")
-		}
-		context.Start(`go run main.go --environment={{.environment}} --contract-hash={{.contractHash}} --abi-filepath={{.abiFilepath}}`,
-			do.M{
-				"environment":  environment,
-				"contractHash": contractHash,
-				"abiFilepath":  abiFilepath,
-				"$in":          "cmd/watch_contract",
-			})
-	})
-
-	p.Task("migrate", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		cfg := cmd.LoadConfig(environment)
-		connectString := config.DbConnectionString(cfg.Database)
-		migrate := fmt.Sprintf("migrate -database '%s' -path ./db/migrations up", connectString)
-		context.Bash(migrate)
-	})
-
-	p.Task("rollback", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		cfg := cmd.LoadConfig(environment)
-		connectString := config.DbConnectionString(cfg.Database)
-		migrate := fmt.Sprintf("migrate -database '%s' -path ./db/migrations down 1", connectString)
-		context.Bash(migrate)
-	})
-
-	p.Task("showContractSummary", nil, func(context *do.Context) {
-		environment := parseEnvironment(context)
-		contractHash := context.Args.MayString("", "contract-hash", "c")
-		blockNumber := context.Args.MayInt(-1, "block-number", "b")
-		if contractHash == "" {
-			log.Fatalln("--contract-hash required")
-		}
-		context.Start(`go run main.go --environment={{.environment}} --contract-hash={{.contractHash}} --block-number={{.blockNumber}}`,
-			do.M{"environment": environment,
-				"contractHash": contractHash,
-				"blockNumber":  blockNumber,
-				"$in":          "cmd/show_contract_summary"})
-	})
-
-}
-
-func main() {
-	do.Godo(tasks)
-}

Gopkg.lock

@@ -7,12 +7,6 @@
   revision = "b26d9c308763d68093482582cea63d69be07a0f0"
   version = "v0.3.0"
 
-[[projects]]
-  branch = "master"
-  name = "github.com/MichaelTJones/walk"
-  packages = ["."]
-  revision = "4748e29d5718c2df4028a6543edf86fd8cc0f881"
-
 [[projects]]
   branch = "master"
   name = "github.com/aristanetworks/goarista"
@@ -31,6 +25,12 @@
   revision = "4bb3c89d44e372e6a9ab85a8be0c9345265c763a"
   version = "v1.7.3"
 
+[[projects]]
+  name = "github.com/fsnotify/fsnotify"
+  packages = ["."]
+  revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
+  version = "v1.4.7"
+
 [[projects]]
   name = "github.com/go-stack/stack"
   packages = ["."]
@@ -51,9 +51,9 @@
 
 [[projects]]
   branch = "master"
-  name = "github.com/howeyc/gopass"
+  name = "github.com/hashicorp/hcl"
-  packages = ["."]
+  packages = [".","hcl/ast","hcl/parser","hcl/scanner","hcl/strconv","hcl/token","json/parser","json/scanner","json/token"]
-  revision = "bf9dde6d0d2c004a008c27aaee91170c786f6db8"
+  revision = "23c074d0eceb2b8a5bfdbb271ab780cde70f05a8"
 
 [[projects]]
   branch = "master"
@@ -61,6 +61,12 @@
   packages = [".","dcps/internetgateway1","dcps/internetgateway2","httpu","scpd","soap","ssdp"]
   revision = "dceda08e705b2acee36aab47d765ed801f64cfc7"
 
+[[projects]]
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
 [[projects]]
   name = "github.com/jackpal/go-nat-pmp"
   packages = ["."]
@@ -80,46 +86,22 @@
   revision = "83612a56d3dd153a94a629cd64925371c9adad78"
 
 [[projects]]
-  name = "github.com/mattn/go-colorable"
+  name = "github.com/magiconair/properties"
   packages = ["."]
-  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
+  revision = "d419a98cdbed11a922bf76f257b7c4be79b50e73"
-  version = "v0.0.9"
+  version = "v1.7.4"
-
-[[projects]]
-  name = "github.com/mattn/go-isatty"
-  packages = ["."]
-  revision = "0360b2af4f38e8d38c7fce2a9f4e702702d73a39"
-  version = "v0.0.3"
 
 [[projects]]
   branch = "master"
-  name = "github.com/mgutz/ansi"
+  name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  revision = "9520e82c474b0a04dd04f8a40959027271bab992"
+  revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
 
 [[projects]]
   branch = "master"
-  name = "github.com/mgutz/minimist"
+  name = "github.com/mitchellh/mapstructure"
   packages = ["."]
-  revision = "39eb8cf573ca29344bd7d7e6ba4d7febdebd37a9"
+  revision = "b4575eea38cca1123ec2dc90c26529b5c5acfcff"
-
-[[projects]]
-  name = "github.com/mgutz/str"
-  packages = ["."]
-  revision = "968bf66e3da857419e4f6e71b2d5c9ae95682dc4"
-  version = "v1.2.0"
-
-[[projects]]
-  name = "github.com/mgutz/to"
-  packages = ["."]
-  revision = "00c06406c2dd2e011f153a6502a21473676db33f"
-  version = "v1.0.0"
-
-[[projects]]
-  name = "github.com/nozzle/throttler"
-  packages = ["."]
-  revision = "d9b45f19996c645d38c9266d1f5cf1990e930119"
-  version = "v1.0"
 
 [[projects]]
   name = "github.com/onsi/ginkgo"
@@ -133,6 +115,12 @@
   revision = "c893efa28eb45626cdaa76c9f653b62488858837"
   version = "v1.2.0"
 
+[[projects]]
+  name = "github.com/pelletier/go-toml"
+  packages = ["."]
+  revision = "acdc4509485b587f5e675510c4f2c63e90ff68a8"
+  version = "v1.1.0"
+
 [[projects]]
   branch = "master"
   name = "github.com/rcrowley/go-metrics"
@@ -145,18 +133,48 @@
   revision = "7af7a1e09ba336d2ea14b1ce73bf693c6837dbf6"
   version = "v1.2"
 
+[[projects]]
+  name = "github.com/spf13/afero"
+  packages = [".","mem"]
+  revision = "bb8f1927f2a9d3ab41c9340aa034f6b803f4359c"
+  version = "v1.0.2"
+
+[[projects]]
+  name = "github.com/spf13/cast"
+  packages = ["."]
+  revision = "acbeb36b902d72a7a4c18e8f3241075e7ab763e4"
+  version = "v1.1.0"
+
+[[projects]]
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  revision = "7b2c5ac9fc04fc5efafb60700713d4fa609b777b"
+  version = "v0.0.1"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/spf13/jwalterweatherman"
+  packages = ["."]
+  revision = "7c0cea34c8ece3fbeb2b27ab9b59511d360fb394"
+
+[[projects]]
+  name = "github.com/spf13/pflag"
+  packages = ["."]
+  revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/spf13/viper"
+  packages = ["."]
+  revision = "25b30aa063fc18e48662b86996252eabdcf2f0c7"
+  version = "v1.0.0"
+
 [[projects]]
   branch = "master"
   name = "github.com/syndtr/goleveldb"
   packages = ["leveldb","leveldb/cache","leveldb/comparer","leveldb/errors","leveldb/filter","leveldb/iterator","leveldb/journal","leveldb/memdb","leveldb/opt","leveldb/storage","leveldb/table","leveldb/util"]
   revision = "adf24ef3f94bd13ec4163060b21a5678f22b429b"
 
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/crypto"
-  packages = ["ssh/terminal"]
-  revision = "94eea52f7b742c7cbe0b03b22f0c4c8631ece122"
-
 [[projects]]
   branch = "master"
   name = "golang.org/x/net"
@@ -166,13 +184,13 @@
 [[projects]]
   branch = "master"
   name = "golang.org/x/sys"
-  packages = ["unix","windows"]
+  packages = ["unix"]
   revision = "a0f4589a76f1f83070cb9e5613809e1d07b97c13"
 
 [[projects]]
   branch = "master"
   name = "golang.org/x/text"
-  packages = ["encoding","encoding/charmap","encoding/htmlindex","encoding/internal","encoding/internal/identifier","encoding/japanese","encoding/korean","encoding/simplifiedchinese","encoding/traditionalchinese","encoding/unicode","internal/gen","internal/tag","internal/utf8internal","language","runes","transform","unicode/cldr"]
+  packages = ["encoding","encoding/charmap","encoding/htmlindex","encoding/internal","encoding/internal/identifier","encoding/japanese","encoding/korean","encoding/simplifiedchinese","encoding/traditionalchinese","encoding/unicode","internal/gen","internal/tag","internal/triegen","internal/ucd","internal/utf8internal","language","runes","transform","unicode/cldr","unicode/norm"]
   revision = "be25de41fadfae372d6470bda81ca6beb55ef551"
 
 [[projects]]
@@ -181,12 +199,6 @@
   revision = "57907de300222151a123d29255ed17f5ed43fad3"
   version = "v0.1.0"
 
-[[projects]]
-  name = "gopkg.in/godo.v2"
-  packages = [".","glob","util","watcher","watcher/fswatch"]
-  revision = "b5fd2f0bef1ebe832e628cfad18ab1cc707f65a1"
-  version = "v2.0.9"
-
 [[projects]]
   branch = "v2"
   name = "gopkg.in/karalabe/cookiejar.v2"
@@ -208,6 +220,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "2d7b9c5c88a94f3384b0cd754d35a3d7822a5858f439aaafe8c6477fb7c24f63"
+  inputs-digest = "641a04f7f89572adf1ebd051d0839eb5b03fdc67bb50838bfac98832246636f0"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -32,3 +32,7 @@
 [[constraint]]
   branch = "master"
   name = "github.com/lib/pq"
+
+[[constraint]]
+  name = "github.com/spf13/cobra"
+  version = "0.0.1"

Makefile

@@ -0,0 +1,51 @@
+HOST_NAME =
+PORT =
+NAME =
+CONNECT_STRING=postgresql://$(HOST_NAME):$(PORT)/$(NAME)?sslmode=disable
+
+$(MATTESMIGRATE):
+	go get -u -d github.com/mattes/migrate/cli github.com/lib/pq
+	go build -tags 'postgres' -o /usr/local/bin/migrate github.com/mattes/migrate/cli
+
+$(DEP):
+	go get -u github.com/golang/dep/cmd/dep
+
+$(GINKGO):
+	go get -u github.com/onsi/ginkgo/ginkgo  
+
+checkdbvars:
+	test -n "$(HOST_NAME)" # $$HOST_NAME 
+	test -n "$(PORT)" # $$PORT
+	test -n "$(NAME)" # $$NAME
+
+rollback: checkdbvars
+	migrate -database $(CONNECT_STRING) -path ./db/migrations down 1
+	pg_dump -O -s $(CONNECT_STRING) > db/schema.sql
+
+migrate: $(MATTESMIGRATE) checkdbvars
+	migrate -database $(CONNECT_STRING) -path ./db/migrations up
+	pg_dump -O -s $(CONNECT_STRING) > db/schema.sql
+
+import:
+	test -n "$(NAME)" # $$NAME
+	psql $(NAME) < db/schema.sql
+
+dep: $(DEP)
+	dep ensure
+
+build: dep
+	go build
+
+test: $(GINKGO)
+	ginkgo -r
+
+createprivate:
+	#!/bin/bash
+	echo "Deleting test blockchain"
+	rm -rf test_data_dir
+	echo "Creating test blockchain with a new account"
+	mkdir test_data_dir
+	geth --dev --datadir test_data_dir --password .private_blockchain_password account new
+
+startprivate: createprivate
+	geth --datadir test_data_dir --dev --nodiscover --mine --minerthreads 1 --maxpeers 0 --verbosity 3 --unlock 0 --password .private_blockchain_password --rpc

README.md

@@ -1,109 +1,54 @@
 # Vulcanize DB
 
-[![Build Status](https://travis-ci.com/vulcanize/vulcanizedb.svg?token=GKv2Y33qsFnfYgejjvYx&branch=master)](https://travis-ci.com/vulcanize/vulcanizedb)
+[![Build Status](https://travis-ci.com/8thlight/vulcanizedb.svg?token=3psFYN2533rYjhRbvjte&branch=master)](https://travis-ci.com/8thlight/vulcanizedb)
-
-## Development Setup
 
 ### Dependencies
 
  - Go 1.9+
- - https://github.com/golang/dep
-    - `go get -u github.com/golang/dep/cmd/dep`
- - https://github.com/go-godo/godo
-    - `go get -u gopkg.in/godo.v2/cmd/godo`
  - Postgres 10 
  - Go Ethereum 
     - https://ethereum.github.io/go-ethereum/downloads/ 
+ 
+### Installation 
+    go get github.com/vulcanize/vulcanizedb
     
-### Cloning the Repository
-
-1. `git config --global url."git@github.com:".insteadOf "https://github.com/"`
-    - By default, `go get` does not work for private GitHub repos. This will fix that.
-2. `go get github.com/vulcanize/vulcanizedb`
-3. `cd $GOPATH/src/github.com/vulcanize/vulcanizedb`
-4. `dep ensure`
-
 ### Setting up the Databases
 
 1. Install Postgres
 2. Create a superuser for yourself and make sure `psql --list` works without prompting for a password.
-3. `go get -u -d github.com/mattes/migrate/cli github.com/lib/pq`
+3. `createdb vulcanize_private`
-4. `go build -tags 'postgres' -o /usr/local/bin/migrate github.com/mattes/migrate/cli`
+4. `cd $GOPATH/src/github.com/vulcanize/vulcanizedb`
-5. `createdb vulcanize_private`
+5. Import the schema: `psql vulcanize_private < db/schema.sql`
-6. `cd $GOPATH/src/github.com/vulcanize/vulcanizedb`
+
-7. `godo migrate -- --environment=<some-environment>`
+   or run the migrations: `make migrate HOST_NAME=localhost NAME=vulcanize_public PORT=5432`
     * See below for configuring additional environments
-
+    
-Adding a new migration: `./scripts/create_migration <migration-name>`
-
-### Creating/Using a Private Blockchain
-
-Syncing the public blockchain takes many hours for the initial sync and will download 20+ GB of data.
-Here are some instructions for creating a private blockchain that does not depend on having a network connection.
-
-1. Run `./scripts/setup` to create a private blockchain with a new account.
-    * This will result in a warning.
-2. Run `./scripts/start_private_blockchain`.
-3. Run `godo run -- --environment=private` to start listener.
-
-### Connecting to the Public Blockchain
-
-`./scripts/start_blockchain`
-
 ### IPC File Paths
 
 The default location for Ethereum is:
  - `$HOME/Library/Ethereum` for Mac
  - `$HOME/.ethereum` for Ubuntu
- - `$GOPATH/src/gihub.com/vulcanize/vulcanizedb/test_data_dir/geth.ipc` for private blockchain.
+ - `$GOPATH/src/gihub.com/vulcanize/vulcanizedb/test_data_dir/geth.ipc` for private node.
 
-**Note the location of the ipc file is outputted when you connect to a blockchain. It is needed to for configuration**
+**Note the location of the ipc file is printed to the console when you start geth. It is needed to for configuration**
 
-## Start Vulcanize DB
+## Start syncing with postgres
-1. Start a blockchain.
+1. Start geth node (**if fast syncing wait for geth to finsh initial sync**)
 2. In a separate terminal start vulcanize_db
-    - `godo vulcanizeDb -- --environment=<some-environment>`
+    - `vulcanizedb sync --config <config.toml> --starting-block-number <block-number>`
-
-## Running Listener
-
-1. Start a blockchain.
-2. In a separate terminal start listener (ipcDir location)
-    - `godo run -- --environment=<some-environment>`
     
-## Retrieving Historical Data
+   * see `./environments` for example config 
-
-1. Start a blockchain.
-2. In a separate terminal start listener (ipcDir location)
-    - `godo populateBlocks -- --environment=<some-environment> --starting-number=<starting-block-number>`
-    
-## Retrieve Contract Attributes
-
-1. Add contract ABI to contracts / environment directory:
-```
-vulcanizedb/
-    contracts/
-        public/
-            <contract-address>.json
-        private/
-```
-The name of the JSON file should correspond the contract's address.
-2. Start watching the contract `godo watchContract -- --environment=<some-environment> --contract-hash=<contract-address>`
-3. Request summary data `godo showContractSummary -- --environment=<some-environment> --contract-hash=<contract-address>`
-
-
-## Retrieving Contract Logs
-
-1. Get the logs for a specific contract
-    - `godo getLogs -- --environment=<some-environment> --contract-hash=<contract-address>`
-    
-### Configuring Additional Environments
-
-You can create configuration files for additional environments.
-
- * Among other things, it will require the IPC file path
- * See `environments/private.toml` for an example
- * You will need to do this if you want to run a node connecting to the public blockchain
 
+## Watch specific events
+1. Start geth 
+2. In a separate terminal start vulcanize_db
+    - `vulcanizedb sync --config <config.toml> --starting-block-number <block-number>`
+3. Create event filter 
+    - `vulcanizedb addFilter --config <config.toml> --filter-filepath <filter.json>`
+   * see `./filters` for example filter 
+4. The filters are tracked in the `log_filters` table and the filtered events 
+will show up in the `watched_log_events` view
+     
 ## Running the Tests
 
 ### Unit Tests
@@ -112,7 +57,12 @@ You can create configuration files for additional environments.
 
 ### Integration Test
 
-In order to run the integration tests, you will need to run them against a real blockchain. At the moment the integration tests require [Geth v1.7.2](https://ethereum.github.io/go-ethereum/downloads/) as they depend on the `--dev` mode, which changed in v1.7.3 
+In order to run the integration tests, you will need to run them against a real node. At the moment the integration tests require [Geth v1.7.2](https://ethereum.github.io/go-ethereum/downloads/) as they depend on the `--dev` mode, which changed in v1.7.3 
 
-1. Run `./scripts/start_private_blockchain` as a separate process.
+1. Run `make startprivate` in a separate terminal
-2. `go test ./...` to run all tests.
+2. Setup a test database and import the schema: 
+
+   `createdb vulcanize_private`
+   
+    `psql vulcanize_private < db/schema.sql`
+3. `go test ./...` to run all tests.

cmd/addFilter.go

@@ -0,0 +1,75 @@
+package cmd
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"log"
+
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
+	"github.com/vulcanize/vulcanizedb/pkg/geth"
+	"github.com/vulcanize/vulcanizedb/utils"
+	"github.com/spf13/cobra"
+)
+
+// addFilterCmd represents the addFilter command
+var addFilterCmd = &cobra.Command{
+	Use:   "addFilter",
+	Short: "Adds event filter to vulcanizedb",
+	Long: `An event filter is added to the vulcanize_db. 
+All events matching the filter conitions will be tracked 
+in vulcanizedb. 
+
+vulcanizedb addFilter --config config.toml --filter-filepath filter.json
+
+The event filters are expected to match
+the format described in the ethereum RPC wiki:
+
+https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_newfilter
+
+[{
+  "fromBlock": "0x1",
+  "toBlock": "0x2",
+  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+  "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", 
+             null, 
+             "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", 
+             "0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc"]
+}]
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		addFilter()
+	},
+}
+
+var filterFilepath string
+
+func init() {
+	rootCmd.AddCommand(addFilterCmd)
+
+	addFilterCmd.PersistentFlags().StringVar(&filterFilepath, "filter-filepath", "", "path/to/filter.json")
+	addFilterCmd.MarkFlagRequired("filter-filepath")
+}
+
+func addFilter() {
+	if filterFilepath == "" {
+		log.Fatal("filter-filepath required")
+	}
+	var logFilters filters.LogFilters
+	blockchain := geth.NewBlockchain(ipc)
+	repository := utils.LoadPostgres(databaseConfig, blockchain.Node())
+	absFilePath := utils.AbsFilePath(filterFilepath)
+	logFilterBytes, err := ioutil.ReadFile(absFilePath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = json.Unmarshal(logFilterBytes, &logFilters)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for _, filter := range logFilters {
+		err = repository.AddFilter(filter)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}

cmd/get_logs/main.go

@@ -1,71 +0,0 @@
-package main
-
-import (
-	"log"
-
-	"flag"
-
-	"math/big"
-
-	"time"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/core"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-)
-
-func min(a, b int64) int64 {
-	if a < b {
-		return a
-	}
-	return b
-}
-
-const (
-	windowSize      = 24
-	pollingInterval = 10 * time.Second
-)
-
-func main() {
-	environment := flag.String("environment", "", "Environment name")
-	contractHash := flag.String("contract-hash", "", "Contract hash to show summary")
-	ticker := time.NewTicker(pollingInterval)
-	defer ticker.Stop()
-
-	flag.Parse()
-
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-
-	lastBlockNumber := blockchain.LastBlock().Int64()
-	stepSize := int64(1000)
-
-	go func() {
-		for i := int64(0); i < lastBlockNumber; i = min(i+stepSize, lastBlockNumber) {
-			logs, err := blockchain.GetLogs(core.Contract{Hash: *contractHash}, big.NewInt(i), big.NewInt(i+stepSize))
-			log.Println("Backfilling Logs:", i)
-			if err != nil {
-				log.Println(err)
-			}
-			repository.CreateLogs(logs)
-		}
-	}()
-
-	done := make(chan struct{})
-	go func() { done <- struct{}{} }()
-	for range ticker.C {
-		select {
-		case <-done:
-			go func() {
-				z := &big.Int{}
-				z.Sub(blockchain.LastBlock(), big.NewInt(25))
-				log.Printf("Logs Window: %d - %d", z.Int64(), blockchain.LastBlock().Int64())
-				logs, _ := blockchain.GetLogs(core.Contract{Hash: *contractHash}, z, blockchain.LastBlock())
-				repository.CreateLogs(logs)
-				done <- struct{}{}
-			}()
-		default:
-		}
-	}
-}

cmd/populate_blocks/main.go

@@ -1,22 +0,0 @@
-package main
-
-import (
-	"flag"
-
-	"fmt"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-	"github.com/vulcanize/vulcanizedb/pkg/history"
-)
-
-func main() {
-	environment := flag.String("environment", "", "Environment name")
-	startingBlockNumber := flag.Int("starting-number", -1, "First block to fill from")
-	flag.Parse()
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-	numberOfBlocksCreated := history.PopulateMissingBlocks(blockchain, repository, int64(*startingBlockNumber))
-	fmt.Printf("Populated %d blocks", numberOfBlocksCreated)
-}

cmd/root.go

@@ -0,0 +1,74 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/vulcanize/vulcanizedb/pkg/config"
+	"github.com/mitchellh/go-homedir"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var cfgFile string
+var databaseConfig config.Database
+var ipc string
+
+var rootCmd = &cobra.Command{
+	Use:              "vulcanizedb",
+	PersistentPreRun: database,
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func database(cmd *cobra.Command, args []string) {
+	ipc = viper.GetString("client.ipcpath")
+	databaseConfig = config.Database{
+		Name:     viper.GetString("database.name"),
+		Hostname: viper.GetString("database.hostname"),
+		Port:     viper.GetInt("database.port"),
+	}
+	viper.Set("database.config", databaseConfig)
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "environment/public.toml", "config file location")
+	rootCmd.PersistentFlags().String("database-name", "vulcanize_public", "database name")
+	rootCmd.PersistentFlags().Int("database-port", 5432, "database port")
+	rootCmd.PersistentFlags().String("database-hostname", "localhost", "database hostname")
+	rootCmd.PersistentFlags().String("client-ipcPath", "", "location of geth.ipc file")
+
+	viper.BindPFlag("database.name", rootCmd.PersistentFlags().Lookup("database-name"))
+	viper.BindPFlag("database.port", rootCmd.PersistentFlags().Lookup("database-port"))
+	viper.BindPFlag("database.hostname", rootCmd.PersistentFlags().Lookup("database-hostname"))
+	viper.BindPFlag("client.ipcPath", rootCmd.PersistentFlags().Lookup("client-ipcPath"))
+
+}
+
+func initConfig() {
+	if cfgFile != "" {
+		viper.SetConfigFile(cfgFile)
+	} else {
+		home, err := homedir.Dir()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		viper.AddConfigPath(home)
+		viper.SetConfigName(".vulcanizedb")
+	}
+
+	viper.AutomaticEnv()
+
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Printf("Using config file: %s\n\n", viper.ConfigFileUsed())
+	}
+}

cmd/run/main.go

@@ -1,34 +0,0 @@
-package main
-
-import (
-	"flag"
-
-	"time"
-
-	"os"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-	"github.com/vulcanize/vulcanizedb/pkg/history"
-)
-
-const (
-	pollingInterval = 7 * time.Second
-)
-
-func main() {
-	ticker := time.NewTicker(pollingInterval)
-	defer ticker.Stop()
-
-	environment := flag.String("environment", "", "Environment name")
-	flag.Parse()
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-	validator := history.NewBlockValidator(blockchain, repository, 15)
-
-	for range ticker.C {
-		window := validator.ValidateBlocks()
-		validator.Log(os.Stdout, window)
-	}
-}

cmd/show_contract_summary/main.go

@@ -1,31 +0,0 @@
-package main
-
-import (
-	"flag"
-
-	"log"
-
-	"fmt"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/contract_summary"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-)
-
-func main() {
-	environment := flag.String("environment", "", "Environment name")
-	contractHash := flag.String("contract-hash", "", "Contract hash to show summary")
-	_blockNumber := flag.Int64("block-number", -1, "Block number of summary")
-	flag.Parse()
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-	blockNumber := cmd.RequestedBlockNumber(_blockNumber)
-
-	contractSummary, err := contract_summary.NewSummary(blockchain, repository, *contractHash, blockNumber)
-	if err != nil {
-		log.Fatalln(err)
-	}
-	output := contract_summary.GenerateConsoleOutput(contractSummary)
-	fmt.Println(output)
-}

cmd/sync.go

@@ -0,0 +1,81 @@
+package cmd
+
+import (
+	"os"
+
+	"time"
+
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/geth"
+	"github.com/vulcanize/vulcanizedb/pkg/history"
+	"github.com/vulcanize/vulcanizedb/pkg/repositories"
+	"github.com/vulcanize/vulcanizedb/utils"
+	"github.com/spf13/cobra"
+	"log"
+)
+
+// syncCmd represents the sync command
+var syncCmd = &cobra.Command{
+	Use:   "sync",
+	Short: "Syncs vulcanizedb with local ethereum node",
+	Long: `Syncs vulcanizedb with local ethereum node. 
+vulcanizedb sync --startingBlockNumber 0 --config public.toml
+
+Expects ethereum node to be running and requires a .toml config:
+
+  [database]
+  name = "vulcanize_public"
+  hostname = "localhost"
+  port = 5432
+
+  [client]
+  ipcPath = "/Users/mattkrump/Library/Ethereum/geth.ipc"
+`,
+	Run: func(cmd *cobra.Command, args []string) {
+		sync()
+	},
+}
+
+const (
+	pollingInterval = 7 * time.Second
+)
+
+var startingBlockNumber int
+
+func init() {
+	rootCmd.AddCommand(syncCmd)
+
+	syncCmd.Flags().IntVarP(&startingBlockNumber, "starting-block-number", "s", 0, "Block number to start syncing from")
+}
+
+func backFillAllBlocks(blockchain core.Blockchain, repository repositories.Postgres, missingBlocksPopulated chan int, startingBlockNumber int64) {
+	go func() {
+		missingBlocksPopulated <- history.PopulateMissingBlocks(blockchain, repository, startingBlockNumber)
+	}()
+}
+
+func sync() {
+	ticker := time.NewTicker(pollingInterval)
+	defer ticker.Stop()
+
+	blockchain := geth.NewBlockchain(ipc)
+	if blockchain.LastBlock().Int64() == 0 {
+		log.Fatal("geth initial: state sync not finished")
+	}
+	repository := utils.LoadPostgres(databaseConfig, blockchain.Node())
+	validator := history.NewBlockValidator(blockchain, repository, 15)
+
+	missingBlocksPopulated := make(chan int)
+	_startingBlockNumber := int64(startingBlockNumber)
+	go backFillAllBlocks(blockchain, repository, missingBlocksPopulated, _startingBlockNumber)
+
+	for {
+		select {
+		case <-ticker.C:
+			window := validator.ValidateBlocks()
+			validator.Log(os.Stdout, window)
+		case <-missingBlocksPopulated:
+			go backFillAllBlocks(blockchain, repository, missingBlocksPopulated, _startingBlockNumber)
+		}
+	}
+}

cmd/vulcanize_db/main.go

@@ -1,50 +0,0 @@
-package main
-
-import (
-	"flag"
-
-	"time"
-
-	"os"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/core"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-	"github.com/vulcanize/vulcanizedb/pkg/history"
-	"github.com/vulcanize/vulcanizedb/pkg/repositories"
-)
-
-const (
-	pollingInterval = 7 * time.Second
-)
-
-func backFillAllBlocks(blockchain core.Blockchain, repository repositories.Postgres, missingBlocksPopulated chan int) {
-	go func() {
-		missingBlocksPopulated <- history.PopulateMissingBlocks(blockchain, repository, 0)
-	}()
-}
-
-func main() {
-	ticker := time.NewTicker(pollingInterval)
-	defer ticker.Stop()
-
-	environment := flag.String("environment", "", "Environment name")
-	flag.Parse()
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-	validator := history.NewBlockValidator(blockchain, repository, 15)
-
-	missingBlocksPopulated := make(chan int)
-	go backFillAllBlocks(blockchain, repository, missingBlocksPopulated)
-
-	for {
-		select {
-		case <-ticker.C:
-			window := validator.ValidateBlocks()
-			validator.Log(os.Stdout, window)
-		case <-missingBlocksPopulated:
-			go backFillAllBlocks(blockchain, repository, missingBlocksPopulated)
-		}
-	}
-}

cmd/watch_contract/main.go

@@ -1,26 +0,0 @@
-package main
-
-import (
-	"flag"
-
-	"github.com/vulcanize/vulcanizedb/cmd"
-	"github.com/vulcanize/vulcanizedb/pkg/core"
-	"github.com/vulcanize/vulcanizedb/pkg/geth"
-)
-
-func main() {
-	environment := flag.String("environment", "", "Environment name")
-	contractHash := flag.String("contract-hash", "", "contract-hash=x1234")
-	abiFilepath := flag.String("abi-filepath", "", "path/to/abifile.json")
-	flag.Parse()
-
-	contractAbiString := cmd.GetAbi(*abiFilepath, *contractHash)
-	config := cmd.LoadConfig(*environment)
-	blockchain := geth.NewBlockchain(config.Client.IPCPath)
-	repository := cmd.LoadPostgres(config.Database, blockchain.Node())
-	watchedContract := core.Contract{
-		Abi:  contractAbiString,
-		Hash: *contractHash,
-	}
-	repository.CreateContract(watchedContract)
-}

db/migrations/1515613181_add_fields_to_node.down.sql

@@ -0,0 +1,3 @@
+ALTER TABLE nodes
+  DROP COLUMN node_id,
+  DROP COLUMN client_name;

db/migrations/1515613181_add_fields_to_node.up.sql

@@ -0,0 +1,3 @@
+ALTER TABLE nodes
+  ADD COLUMN node_id VARCHAR(128),
+  ADD COLUMN client_name VARCHAR;

db/migrations/1515613715_update_node_index.down.sql

@@ -0,0 +1,9 @@
+BEGIN;
+
+ALTER TABLE nodes
+  DROP CONSTRAINT node_uc;
+
+ALTER TABLE nodes
+  ADD CONSTRAINT node_uc UNIQUE (genesis_block, network_id);
+
+COMMIT;

db/migrations/1515613715_update_node_index.up.sql

@@ -0,0 +1,9 @@
+BEGIN;
+
+ALTER TABLE nodes
+  DROP CONSTRAINT node_uc;
+
+ALTER TABLE nodes
+  ADD CONSTRAINT node_uc UNIQUE (genesis_block, network_id, node_id);
+
+COMMIT;

db/migrations/1516050071_add_log_fk_constraint.down.sql

@@ -0,0 +1,12 @@
+BEGIN;
+
+ALTER TABLE logs
+  DROP CONSTRAINT receipts_fk;
+
+ALTER TABLE logs
+  DROP COLUMN receipt_id;
+
+ALTER TABLE logs
+  ADD CONSTRAINT log_uc UNIQUE (block_number, index);
+
+COMMIT;

db/migrations/1516050071_add_log_fk_constraint.up.sql

@@ -0,0 +1,14 @@
+BEGIN;
+ALTER TABLE logs
+    DROP CONSTRAINT log_uc;
+
+ALTER TABLE logs
+  ADD COLUMN receipt_id INT;
+
+ALTER TABLE logs
+  ADD CONSTRAINT receipts_fk
+FOREIGN KEY (receipt_id)
+REFERENCES receipts (id)
+ON DELETE CASCADE;
+
+COMMIT;

db/migrations/1516648743_add_log_filters.down.sql

@@ -0,0 +1 @@
+DROP TABLE log_filters;

db/migrations/1516648743_add_log_filters.up.sql

@@ -0,0 +1,12 @@
+CREATE TABLE log_filters (
+  id         SERIAL,
+  name       VARCHAR NOT NULL CHECK (name <> ''),
+  from_block BIGINT CHECK (from_block >= 0),
+  to_block   BIGINT CHECK (from_block >= 0),
+  address    VARCHAR(66),
+  topic0     VARCHAR(66),
+  topic1     VARCHAR(66),
+  topic2     VARCHAR(66),
+  topic3     VARCHAR(66),
+  CONSTRAINT name_uc UNIQUE (name)
+);

db/migrations/1516653373_add_watched_event_logs.down.sql

@@ -0,0 +1,2 @@
+DROP VIEW watched_event_logs;
+DROP VIEW block_stats;

db/migrations/1516653373_add_watched_event_logs.up.sql

@@ -0,0 +1,29 @@
+CREATE VIEW block_stats AS
+  SELECT
+    max(block_number) AS max_block,
+    min(block_number) AS min_block
+  FROM logs;
+
+CREATE VIEW watched_event_logs AS
+  SELECT
+    log_filters.name,
+    logs.id,
+    block_number,
+    logs.address,
+    tx_hash,
+    index,
+    logs.topic0,
+    logs.topic1,
+    logs.topic2,
+    logs.topic3,
+    data,
+    receipt_id
+  FROM log_filters
+    CROSS JOIN block_stats
+    JOIN logs ON logs.address = log_filters.address
+                 AND logs.block_number >= coalesce(log_filters.from_block, block_stats.min_block)
+                 AND logs.block_number <= coalesce(log_filters.to_block, block_stats.max_block)
+  WHERE (log_filters.topic0 = logs.topic0 OR log_filters.topic0 ISNULL)
+        AND (log_filters.topic1 = logs.topic1 OR log_filters.topic1 ISNULL)
+        AND (log_filters.topic2 = logs.topic2 OR log_filters.topic2 ISNULL)
+        AND (log_filters.topic3 = logs.topic3 OR log_filters.topic3 ISNULL);

db/schema.sql

@@ -0,0 +1,556 @@
+--
+-- PostgreSQL database dump
+--
+
+-- Dumped from database version 10.1
+-- Dumped by pg_dump version 10.1
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SET check_function_bodies = false;
+SET client_min_messages = warning;
+SET row_security = off;
+
+--
+-- Name: plpgsql; Type: EXTENSION; Schema: -; Owner: -
+--
+
+CREATE EXTENSION IF NOT EXISTS plpgsql WITH SCHEMA pg_catalog;
+
+
+--
+-- Name: EXTENSION plpgsql; Type: COMMENT; Schema: -; Owner: -
+--
+
+COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';
+
+
+SET search_path = public, pg_catalog;
+
+SET default_tablespace = '';
+
+SET default_with_oids = false;
+
+--
+-- Name: logs; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE logs (
+    id integer NOT NULL,
+    block_number bigint,
+    address character varying(66),
+    tx_hash character varying(66),
+    index bigint,
+    topic0 character varying(66),
+    topic1 character varying(66),
+    topic2 character varying(66),
+    topic3 character varying(66),
+    data text,
+    receipt_id integer
+);
+
+
+--
+-- Name: block_stats; Type: VIEW; Schema: public; Owner: -
+--
+
+CREATE VIEW block_stats AS
+ SELECT max(logs.block_number) AS max_block,
+    min(logs.block_number) AS min_block
+   FROM logs;
+
+
+--
+-- Name: blocks; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE blocks (
+    block_number bigint,
+    block_gaslimit double precision,
+    block_gasused double precision,
+    block_time double precision,
+    id integer NOT NULL,
+    block_difficulty bigint,
+    block_hash character varying(66),
+    block_nonce character varying(20),
+    block_parenthash character varying(66),
+    block_size bigint,
+    uncle_hash character varying(66),
+    node_id integer NOT NULL,
+    is_final boolean,
+    block_miner character varying(42),
+    block_extra_data character varying,
+    block_reward numeric,
+    block_uncles_reward numeric
+);
+
+
+--
+-- Name: blocks_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE blocks_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: blocks_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE blocks_id_seq OWNED BY blocks.id;
+
+
+--
+-- Name: log_filters; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE log_filters (
+    id integer NOT NULL,
+    name character varying NOT NULL,
+    from_block bigint,
+    to_block bigint,
+    address character varying(66),
+    topic0 character varying(66),
+    topic1 character varying(66),
+    topic2 character varying(66),
+    topic3 character varying(66),
+    CONSTRAINT log_filters_from_block_check CHECK ((from_block >= 0)),
+    CONSTRAINT log_filters_from_block_check1 CHECK ((from_block >= 0)),
+    CONSTRAINT log_filters_name_check CHECK (((name)::text <> ''::text))
+);
+
+
+--
+-- Name: log_filters_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE log_filters_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: log_filters_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE log_filters_id_seq OWNED BY log_filters.id;
+
+
+--
+-- Name: logs_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE logs_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: logs_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE logs_id_seq OWNED BY logs.id;
+
+
+--
+-- Name: nodes; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE nodes (
+    id integer NOT NULL,
+    genesis_block character varying(66),
+    network_id numeric,
+    node_id character varying(128),
+    client_name character varying
+);
+
+
+--
+-- Name: nodes_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE nodes_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: nodes_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE nodes_id_seq OWNED BY nodes.id;
+
+
+--
+-- Name: receipts; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE receipts (
+    id integer NOT NULL,
+    transaction_id integer NOT NULL,
+    contract_address character varying(42),
+    cumulative_gas_used numeric,
+    gas_used numeric,
+    state_root character varying(66),
+    status integer,
+    tx_hash character varying(66)
+);
+
+
+--
+-- Name: receipts_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE receipts_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: receipts_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE receipts_id_seq OWNED BY receipts.id;
+
+
+--
+-- Name: schema_migrations; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE schema_migrations (
+    version bigint NOT NULL,
+    dirty boolean NOT NULL
+);
+
+
+--
+-- Name: transactions; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE transactions (
+    id integer NOT NULL,
+    tx_hash character varying(66),
+    tx_nonce numeric,
+    tx_to character varying(66),
+    tx_gaslimit numeric,
+    tx_gasprice numeric,
+    tx_value numeric,
+    block_id integer NOT NULL,
+    tx_from character varying(66),
+    tx_input_data character varying
+);
+
+
+--
+-- Name: transactions_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE transactions_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: transactions_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE transactions_id_seq OWNED BY transactions.id;
+
+
+--
+-- Name: watched_contracts; Type: TABLE; Schema: public; Owner: -
+--
+
+CREATE TABLE watched_contracts (
+    contract_id integer NOT NULL,
+    contract_hash character varying(66),
+    contract_abi json
+);
+
+
+--
+-- Name: watched_contracts_contract_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE watched_contracts_contract_id_seq
+    AS integer
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: watched_contracts_contract_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE watched_contracts_contract_id_seq OWNED BY watched_contracts.contract_id;
+
+
+--
+-- Name: watched_event_logs; Type: VIEW; Schema: public; Owner: -
+--
+
+CREATE VIEW watched_event_logs AS
+ SELECT log_filters.name,
+    logs.id,
+    logs.block_number,
+    logs.address,
+    logs.tx_hash,
+    logs.index,
+    logs.topic0,
+    logs.topic1,
+    logs.topic2,
+    logs.topic3,
+    logs.data,
+    logs.receipt_id
+   FROM ((log_filters
+     CROSS JOIN block_stats)
+     JOIN logs ON ((((logs.address)::text = (log_filters.address)::text) AND (logs.block_number >= COALESCE(log_filters.from_block, block_stats.min_block)) AND (logs.block_number <= COALESCE(log_filters.to_block, block_stats.max_block)))))
+  WHERE ((((log_filters.topic0)::text = (logs.topic0)::text) OR (log_filters.topic0 IS NULL)) AND (((log_filters.topic1)::text = (logs.topic1)::text) OR (log_filters.topic1 IS NULL)) AND (((log_filters.topic2)::text = (logs.topic2)::text) OR (log_filters.topic2 IS NULL)) AND (((log_filters.topic3)::text = (logs.topic3)::text) OR (log_filters.topic3 IS NULL)));
+
+
+--
+-- Name: blocks id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY blocks ALTER COLUMN id SET DEFAULT nextval('blocks_id_seq'::regclass);
+
+
+--
+-- Name: log_filters id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY log_filters ALTER COLUMN id SET DEFAULT nextval('log_filters_id_seq'::regclass);
+
+
+--
+-- Name: logs id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY logs ALTER COLUMN id SET DEFAULT nextval('logs_id_seq'::regclass);
+
+
+--
+-- Name: nodes id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY nodes ALTER COLUMN id SET DEFAULT nextval('nodes_id_seq'::regclass);
+
+
+--
+-- Name: receipts id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY receipts ALTER COLUMN id SET DEFAULT nextval('receipts_id_seq'::regclass);
+
+
+--
+-- Name: transactions id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY transactions ALTER COLUMN id SET DEFAULT nextval('transactions_id_seq'::regclass);
+
+
+--
+-- Name: watched_contracts contract_id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY watched_contracts ALTER COLUMN contract_id SET DEFAULT nextval('watched_contracts_contract_id_seq'::regclass);
+
+
+--
+-- Name: blocks blocks_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY blocks
+    ADD CONSTRAINT blocks_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: watched_contracts contract_hash_uc; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY watched_contracts
+    ADD CONSTRAINT contract_hash_uc UNIQUE (contract_hash);
+
+
+--
+-- Name: logs logs_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY logs
+    ADD CONSTRAINT logs_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: log_filters name_uc; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY log_filters
+    ADD CONSTRAINT name_uc UNIQUE (name);
+
+
+--
+-- Name: blocks node_id_block_number_uc; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY blocks
+    ADD CONSTRAINT node_id_block_number_uc UNIQUE (block_number, node_id);
+
+
+--
+-- Name: nodes node_uc; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY nodes
+    ADD CONSTRAINT node_uc UNIQUE (genesis_block, network_id, node_id);
+
+
+--
+-- Name: nodes nodes_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY nodes
+    ADD CONSTRAINT nodes_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: receipts receipts_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY receipts
+    ADD CONSTRAINT receipts_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: schema_migrations schema_migrations_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY schema_migrations
+    ADD CONSTRAINT schema_migrations_pkey PRIMARY KEY (version);
+
+
+--
+-- Name: transactions transactions_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY transactions
+    ADD CONSTRAINT transactions_pkey PRIMARY KEY (id);
+
+
+--
+-- Name: watched_contracts watched_contracts_pkey; Type: CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY watched_contracts
+    ADD CONSTRAINT watched_contracts_pkey PRIMARY KEY (contract_id);
+
+
+--
+-- Name: block_id_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX block_id_index ON transactions USING btree (block_id);
+
+
+--
+-- Name: block_number_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX block_number_index ON blocks USING btree (block_number);
+
+
+--
+-- Name: node_id_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX node_id_index ON blocks USING btree (node_id);
+
+
+--
+-- Name: transaction_id_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX transaction_id_index ON receipts USING btree (transaction_id);
+
+
+--
+-- Name: tx_from_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX tx_from_index ON transactions USING btree (tx_from);
+
+
+--
+-- Name: tx_to_index; Type: INDEX; Schema: public; Owner: -
+--
+
+CREATE INDEX tx_to_index ON transactions USING btree (tx_to);
+
+
+--
+-- Name: transactions blocks_fk; Type: FK CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY transactions
+    ADD CONSTRAINT blocks_fk FOREIGN KEY (block_id) REFERENCES blocks(id) ON DELETE CASCADE;
+
+
+--
+-- Name: blocks node_fk; Type: FK CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY blocks
+    ADD CONSTRAINT node_fk FOREIGN KEY (node_id) REFERENCES nodes(id) ON DELETE CASCADE;
+
+
+--
+-- Name: logs receipts_fk; Type: FK CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY logs
+    ADD CONSTRAINT receipts_fk FOREIGN KEY (receipt_id) REFERENCES receipts(id) ON DELETE CASCADE;
+
+
+--
+-- Name: receipts transaction_fk; Type: FK CONSTRAINT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY receipts
+    ADD CONSTRAINT transaction_fk FOREIGN KEY (transaction_id) REFERENCES transactions(id) ON DELETE CASCADE;
+
+
+--
+-- PostgreSQL database dump complete
+--
+

filters/example-filter.json

@@ -0,0 +1,15 @@
+[{
+"name": "TransferFilter",
+"fromBlock": "0x488290",
+"toBlock": "0x488678",
+"address": "0x06012c8cf97bead5deae237070f9587f8e7a266d",
+"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
+},
+{
+  "name": "NewFilter",
+  "toBlock": "0x4B34AA",
+  "fromBlock": "0x4B34AD",
+  "address": "0x06012c8cf97bead5deae237070f9587f8e7a266d",
+  "topics": ["0x241ea03ca20251805084d27d4440371c34a0b85ff108f6bb5611248f73818b80"]
+}]
+

integration_test/contract_test.go

@@ -15,8 +15,7 @@ import (
 
 var _ = Describe("Reading contracts", func() {
 
-	//TODO was experiencing Infura issue (I suspect) on 1/5. Unignore these and revisit if persists on next commit
+	Describe("Reading the list of attributes", func() {
-	XDescribe("Reading the list of attributes", func() {
 		It("returns a string attribute for a real contract", func() {
 			config, err := cfg.NewConfig("infura")
 			if err != nil {
@@ -59,8 +58,7 @@ var _ = Describe("Reading contracts", func() {
 		})
 	})
 
-	//TODO was experiencing Infura issue (I suspect) on 1/5. Unignore these and revisit if persists on next commit
+	Describe("Getting a contract attribute", func() {
-	XDescribe("Getting a contract attribute", func() {
 		It("returns the correct attribute for a real contract", func() {
 			config, _ := cfg.NewConfig("infura")
 			blockchain := geth.NewBlockchain(config.Client.IPCPath)
@@ -109,8 +107,8 @@ var _ = Describe("Reading contracts", func() {
 			expectedLogZero := core.Log{
 				BlockNumber: 4703824,
 				TxHash:      "0xf896bfd1eb539d881a1a31102b78de9f25cd591bf1fe1924b86148c0b205fd5d",
-				Address:     "0xd26114cd6EE289AccF82350c8d8487fedB8A0C07",
+				Address:     "0xd26114cd6ee289accf82350c8d8487fedb8a0c07",
-				Topics: map[int]string{
+				Topics: core.Topics{
 					0: "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
 					1: "0x000000000000000000000000fbb1b73c4f0bda4f67dca266ce6ef42f520fbb98",
 					2: "0x000000000000000000000000d26114cd6ee289accf82350c8d8487fedb8a0c07",

integration_test/geth_blockchain_test.go

@@ -52,6 +52,8 @@ var _ = Describe("Reading from the Geth blockchain", func() {
 
 		Expect(node.GenesisBlock).To(Equal(devNetworkGenesisBlock))
 		Expect(node.NetworkId).To(Equal(devNetworkNodeId))
+		Expect(len(node.Id)).To(Equal(128))
+		Expect(node.ClientName).To(ContainSubstring("Geth"))
 
 		close(done)
 	}, 15)

main.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"github.com/vulcanize/vulcanizedb/cmd"
+)
+
+func main() {
+	cmd.Execute()
+}

pkg/core/log.go

@@ -4,7 +4,7 @@ type Log struct {
 	BlockNumber int64
 	TxHash      string
 	Address     string
-	Topics      map[int]string
+	Topics
-	Index       int64
+	Index int64
-	Data        string
+	Data  string
 }

pkg/core/node_info.go

@@ -3,4 +3,6 @@ package core
 type Node struct {
 	GenesisBlock string
 	NetworkId    float64
+	Id           string
+	ClientName   string
 }

pkg/core/topics.go

@@ -0,0 +1,3 @@
+package core
+
+type Topics [4]string

pkg/core/transaction.go

@@ -9,5 +9,5 @@ type Transaction struct {
 	GasLimit int64
 	GasPrice int64
 	Receipt
-	Value int64
+	Value string
 }

pkg/fakes/blockchain.go

@@ -50,7 +50,7 @@ func NewBlockchain() *Blockchain {
 		blocks:             make(map[int64]core.Block),
 		logs:               make(map[string][]core.Log),
 		contractAttributes: make(map[string]map[string]string),
-		node:               core.Node{GenesisBlock: "GENESIS"},
+		node:               core.Node{GenesisBlock: "GENESIS", NetworkId: 1, Id: "x123", ClientName: "Geth"},
 	}
 }
 

pkg/filters/filter_query.go

@@ -0,0 +1,64 @@
+package filters
+
+import (
+	"encoding/json"
+
+	"errors"
+
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+)
+
+type LogFilters []LogFilter
+
+type LogFilter struct {
+	Name        string `json:"name"`
+	FromBlock   int64  `json:"fromBlock"`
+	ToBlock     int64  `json:"toBlock"`
+	Address     string `json:"address"`
+	core.Topics `json:"topics"`
+}
+
+func (filterQuery *LogFilter) UnmarshalJSON(input []byte) error {
+	type Alias LogFilter
+
+	var err error
+	aux := &struct {
+		ToBlock   string `json:"toBlock"`
+		FromBlock string `json:"fromBlock"`
+		*Alias
+	}{
+		Alias: (*Alias)(filterQuery),
+	}
+	if err := json.Unmarshal(input, &aux); err != nil {
+		return err
+	}
+	if filterQuery.Name == "" {
+		return errors.New("filters: must provide name for logfilter")
+	}
+	filterQuery.ToBlock, err = filterQuery.unmarshalFromToBlock(aux.ToBlock)
+	if err != nil {
+		return errors.New("filters: invalid fromBlock")
+	}
+	filterQuery.FromBlock, err = filterQuery.unmarshalFromToBlock(aux.FromBlock)
+	if err != nil {
+		return errors.New("filters: invalid fromBlock")
+	}
+	if !common.IsHexAddress(filterQuery.Address) {
+		return errors.New("filters: invalid address")
+	}
+
+	return nil
+}
+
+func (filterQuery *LogFilter) unmarshalFromToBlock(auxBlock string) (int64, error) {
+	if auxBlock == "" {
+		return -1, nil
+	}
+	block, err := hexutil.DecodeUint64(auxBlock)
+	if err != nil {
+		return 0, errors.New("filters: invalid block arg")
+	}
+	return int64(block), nil
+}

pkg/filters/filter_test.go

@@ -0,0 +1,125 @@
+package filters_test
+
+import (
+	"encoding/json"
+
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Log filters", func() {
+	It("decodes web3 filter to LogFilter", func() {
+
+		var logFilter filters.LogFilter
+		jsonFilter := []byte(
+			`{
+      "name": "TestEvent",
+      "fromBlock": "0x1",
+      "toBlock": "0x488290",
+	  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             }`)
+		err := json.Unmarshal(jsonFilter, &logFilter)
+
+		Expect(err).ToNot(HaveOccurred())
+		Expect(logFilter.Name).To(Equal("TestEvent"))
+		Expect(logFilter.FromBlock).To(Equal(int64(1)))
+		Expect(logFilter.ToBlock).To(Equal(int64(4752016)))
+		Expect(logFilter.Address).To(Equal("0x8888f1f195afa192cfee860698584c030f4c9db1"))
+		Expect(logFilter.Topics).To(Equal(
+			core.Topics{
+				"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+				"",
+				"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+				""}))
+	})
+
+	It("decodes array of web3 filters to  []LogFilter", func() {
+
+		logFilters := make([]filters.LogFilter, 0)
+		jsonFilter := []byte(
+			`[{
+      "name": "TestEvent",
+      "fromBlock": "0x1",
+      "toBlock": "0x488290",
+	  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             },
+      		{
+	  "name": "TestEvent2",
+      "fromBlock": "0x3",
+      "toBlock": "0x4",
+	  "address": "0xd26114cd6EE289AccF82350c8d8487fedB8A0C07",
+      "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef", "0x0000000000000000000000006b0949d4c6edfe467db78241b7d5566f3c2bb43e", "0x0000000000000000000000005e44c3e467a49c9ca0296a9f130fc433041aaa28"]
+             }]`)
+		err := json.Unmarshal(jsonFilter, &logFilters)
+
+		Expect(err).ToNot(HaveOccurred())
+		Expect(len(logFilters)).To(Equal(2))
+		Expect(logFilters[0].Name).To(Equal("TestEvent"))
+		Expect(logFilters[1].Name).To(Equal("TestEvent2"))
+	})
+
+	It("requires valid ethereum address", func() {
+
+		var logFilter filters.LogFilter
+		jsonFilter := []byte(
+			`{
+      "name": "TestEvent",
+      "fromBlock": "0x1",
+      "toBlock": "0x2",
+	  "address": "0x8888f1f195afa192cf84c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             }`)
+		err := json.Unmarshal(jsonFilter, &logFilter)
+		Expect(err).To(HaveOccurred())
+
+	})
+	It("requires name", func() {
+
+		var logFilter filters.LogFilter
+		jsonFilter := []byte(
+			`{
+      "fromBlock": "0x1",
+      "toBlock": "0x2",
+	  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             }`)
+		err := json.Unmarshal(jsonFilter, &logFilter)
+		Expect(err).To(HaveOccurred())
+
+	})
+
+	It("maps missing fromBlock to -1", func() {
+
+		var logFilter filters.LogFilter
+		jsonFilter := []byte(
+			`{
+      "name": "TestEvent",
+      "toBlock": "0x2",
+	  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             }`)
+		err := json.Unmarshal(jsonFilter, &logFilter)
+		Expect(err).ToNot(HaveOccurred())
+		Expect(logFilter.FromBlock).To(Equal(int64(-1)))
+
+	})
+
+	It("maps missing toBlock to -1", func() {
+		var logFilter filters.LogFilter
+		jsonFilter := []byte(
+			`{
+      "name": "TestEvent",
+	  "address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
+      "topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, "0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null]
+             }`)
+		err := json.Unmarshal(jsonFilter, &logFilter)
+		Expect(err).ToNot(HaveOccurred())
+		Expect(logFilter.ToBlock).To(Equal(int64(-1)))
+
+	})
+
+})

pkg/filters/query_builder_suite_test.go

@@ -0,0 +1,13 @@
+package filters_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestQueryBuilder(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "QueryBuilder Suite")
+}

pkg/geth/abi.go

@@ -38,6 +38,19 @@ func NewEtherScanClient(url string) *EtherScanApi {
 
 }
 
+func GenUrl(network string) string {
+	switch network {
+	case "ropsten":
+		return "https://ropsten.etherscan.io"
+	case "kovan":
+		return "https://kovan.etherscan.io"
+	case "rinkeby":
+		return "https://rinkeby.etherscan.io"
+	default:
+		return "https://api.etherscan.io"
+	}
+}
+
 //https://api.etherscan.io/api?module=contract&action=getabi&address=%s
 func (e *EtherScanApi) GetAbi(contractHash string) (string, error) {
 	target := new(Response)

pkg/geth/abi_test.go

@@ -101,5 +101,22 @@ var _ = Describe("ABI files", func() {
 				})
 			})
 		})
+
+		Describe("Generating etherscan endpoints based on network", func() {
+			It("should return the main endpoint as the default", func() {
+				url := geth.GenUrl("")
+				Expect(url).To(Equal("https://api.etherscan.io"))
+			})
+
+			It("generates various test network endpoint if test network is supplied", func() {
+				ropstenUrl := geth.GenUrl("ropsten")
+				rinkebyUrl := geth.GenUrl("rinkeby")
+				kovanUrl := geth.GenUrl("kovan")
+
+				Expect(ropstenUrl).To(Equal("https://ropsten.etherscan.io"))
+				Expect(kovanUrl).To(Equal("https://kovan.etherscan.io"))
+				Expect(rinkebyUrl).To(Equal("https://rinkeby.etherscan.io"))
+			})
+		})
 	})
 })

pkg/geth/block_to_core_block.go

@@ -25,7 +25,7 @@ func ToCoreBlock(gethBlock *types.Block, client GethClient) core.Block {
 		GasLimit:     gethBlock.GasLimit().Int64(),
 		GasUsed:      gethBlock.GasUsed().Int64(),
 		Hash:         gethBlock.Hash().Hex(),
-		Miner:        gethBlock.Coinbase().Hex(),
+		Miner:        strings.ToLower(gethBlock.Coinbase().Hex()),
 		Nonce:        hexutil.Encode(gethBlock.Header().Nonce[:]),
 		Number:       gethBlock.Number().Int64(),
 		ParentHash:   gethBlock.ParentHash().Hex(),
@@ -58,6 +58,10 @@ func convertTransactionsToCore(gethBlock *types.Block, client GethClient) []core
 
 func appendReceiptToTransaction(client GethClient, transaction core.Transaction) (core.Transaction, error) {
 	gethReceipt, err := client.TransactionReceipt(context.Background(), common.HexToHash(transaction.Hash))
+	if err != nil {
+		log.Println(err)
+		return transaction, err
+	}
 	receipt := ReceiptToCoreReceipt(gethReceipt)
 	transaction.Receipt = receipt
 	return transaction, err
@@ -72,7 +76,7 @@ func transToCoreTrans(transaction *types.Transaction, from *common.Address) core
 		From:     strings.ToLower(addressToHex(from)),
 		GasLimit: transaction.Gas().Int64(),
 		GasPrice: transaction.GasPrice().Int64(),
-		Value:    transaction.Value().Int64(),
+		Value:    transaction.Value().String(),
 		Data:     data,
 	}
 }

pkg/geth/block_to_core_block_test.go

@@ -246,7 +246,7 @@ var _ = Describe("Conversion of GethBlock to core.Block", func() {
 			Expect(coreTransaction.From).To(Equal("0x0000000000000000000000000000000000000123"))
 			Expect(coreTransaction.GasLimit).To(Equal(gethTransaction.Gas().Int64()))
 			Expect(coreTransaction.GasPrice).To(Equal(gethTransaction.GasPrice().Int64()))
-			Expect(coreTransaction.Value).To(Equal(gethTransaction.Value().Int64()))
+			Expect(coreTransaction.Value).To(Equal(gethTransaction.Value().String()))
 			Expect(coreTransaction.Nonce).To(Equal(gethTransaction.Nonce()))
 
 			coreReceipt := coreTransaction.Receipt

pkg/geth/blockchain.go

@@ -3,6 +3,10 @@ package geth
 import (
 	"math/big"
 
+	"strings"
+
+	"log"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/geth/node"
 	"github.com/ethereum/go-ethereum"
@@ -23,13 +27,27 @@ type Blockchain struct {
 
 func NewBlockchain(ipcPath string) *Blockchain {
 	blockchain := Blockchain{}
-	rpcClient, _ := rpc.Dial(ipcPath)
+	rpcClient, err := rpc.Dial(ipcPath)
+	if err != nil {
+		log.Fatal(err)
+	}
 	client := ethclient.NewClient(rpcClient)
-	blockchain.node = node.Retrieve(rpcClient)
+	blockchain.node = node.Info(rpcClient)
+	if infura := isInfuraNode(ipcPath); infura {
+		blockchain.node.Id = "infura"
+		blockchain.node.ClientName = "infura"
+	}
 	blockchain.client = client
 	return &blockchain
 }
 
+func isInfuraNode(ipcPath string) bool {
+	if strings.Contains(ipcPath, "infura") {
+		return true
+	}
+	return false
+}
+
 func (blockchain *Blockchain) GetLogs(contract core.Contract, startingBlockNumber *big.Int, endingBlockNumber *big.Int) ([]core.Log, error) {
 	if endingBlockNumber == nil {
 		endingBlockNumber = startingBlockNumber
@@ -44,7 +62,7 @@ func (blockchain *Blockchain) GetLogs(contract core.Contract, startingBlockNumbe
 	if err != nil {
 		return []core.Log{}, err
 	}
-	logs := GethLogsToCoreLogs(gethLogs)
+	logs := ToCoreLogs(gethLogs)
 	return logs, nil
 }
 

pkg/geth/log_to_core_log.go

@@ -1,19 +1,36 @@
 package geth
 
 import (
+	"strings"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
 )
 
-func LogToCoreLog(gethLog types.Log) core.Log {
+func ToCoreLogs(gethLogs []types.Log) []core.Log {
-	topics := gethLog.Topics
+	var logs []core.Log
-	var hexTopics = make(map[int]string)
+	for _, log := range gethLogs {
+		log := ToCoreLog(log)
+		logs = append(logs, log)
+	}
+	return logs
+}
+
+func makeTopics(topics []common.Hash) core.Topics {
+	var hexTopics core.Topics
 	for i, topic := range topics {
 		hexTopics[i] = topic.Hex()
 	}
+	return hexTopics
+}
+
+func ToCoreLog(gethLog types.Log) core.Log {
+	topics := gethLog.Topics
+	hexTopics := makeTopics(topics)
 	return core.Log{
-		Address: gethLog.Address.Hex(),
+		Address: strings.ToLower(gethLog.Address.Hex()),
 
 		BlockNumber: int64(gethLog.BlockNumber),
 		Topics:      hexTopics,
@@ -22,12 +39,3 @@ func LogToCoreLog(gethLog types.Log) core.Log {
 		Data:        hexutil.Encode(gethLog.Data),
 	}
 }
-
-func GethLogsToCoreLogs(gethLogs []types.Log) []core.Log {
-	var logs []core.Log
-	for _, log := range gethLogs {
-		log := LogToCoreLog(log)
-		logs = append(logs, log)
-	}
-	return logs
-}

pkg/geth/log_to_core_log_test.go

@@ -1,6 +1,8 @@
 package geth_test
 
 import (
+	"strings"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/geth"
 	"github.com/ethereum/go-ethereum/common"
@@ -14,7 +16,7 @@ var _ = Describe("Conversion of GethLog to core.Log", func() {
 
 	It("converts geth log to internal log format", func() {
 		gethLog := types.Log{
-			Address:     common.HexToAddress("0xecf8f87f810ecf450940c9f60066b4a7a501d6a7"),
+			Address:     common.HexToAddress("0x448a5065aeBB8E423F0896E6c5D525C040f59af3"),
 			BlockHash:   common.HexToHash("0x656c34545f90a730a19008c0e7a7cd4fb3895064b48d6d69761bd5abad681056"),
 			BlockNumber: 2019236,
 			Data:        hexutil.MustDecode("0x000000000000000000000000000000000000000000000001a055690d9db80000"),
@@ -28,18 +30,18 @@ var _ = Describe("Conversion of GethLog to core.Log", func() {
 		}
 
 		expected := core.Log{
-			Address:     gethLog.Address.Hex(),
+			Address:     strings.ToLower(gethLog.Address.Hex()),
 			BlockNumber: int64(gethLog.BlockNumber),
 			Data:        hexutil.Encode(gethLog.Data),
 			TxHash:      gethLog.TxHash.Hex(),
 			Index:       2,
-			Topics: map[int]string{
+			Topics: core.Topics{
-				0: common.HexToHash("0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef").Hex(),
+				gethLog.Topics[0].Hex(),
-				1: common.HexToHash("0x00000000000000000000000080b2c9d7cbbf30a1b0fc8983c647d754c6525615").Hex(),
+				gethLog.Topics[1].Hex(),
 			},
 		}
 
-		coreLog := geth.LogToCoreLog(gethLog)
+		coreLog := geth.ToCoreLog(gethLog)
 
 		Expect(coreLog.Address).To(Equal(expected.Address))
 		Expect(coreLog.BlockNumber).To(Equal(expected.BlockNumber))
@@ -79,10 +81,10 @@ var _ = Describe("Conversion of GethLog to core.Log", func() {
 			},
 		}
 
-		expectedOne := geth.LogToCoreLog(gethLogOne)
+		expectedOne := geth.ToCoreLog(gethLogOne)
-		expectedTwo := geth.LogToCoreLog(gethLogTwo)
+		expectedTwo := geth.ToCoreLog(gethLogTwo)
 
-		coreLogs := geth.GethLogsToCoreLogs([]types.Log{gethLogOne, gethLogTwo})
+		coreLogs := geth.ToCoreLogs([]types.Log{gethLogOne, gethLogTwo})
 
 		Expect(len(coreLogs)).To(Equal(2))
 		Expect(coreLogs[0]).To(Equal(expectedOne))

pkg/geth/node/node.go

@@ -3,30 +3,47 @@ package node
 import (
 	"context"
 
+	"strconv"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
-func Retrieve(client *rpc.Client) core.Node {
+func Info(client *rpc.Client) core.Node {
-	var info p2p.NodeInfo
 	node := core.Node{}
-	client.CallContext(context.Background(), &info, "admin_nodeInfo")
+	node.NetworkId = NetworkId(client)
-	for protocolName, protocol := range info.Protocols {
+	node.GenesisBlock = GenesisBlock(client)
-		if protocolName == "eth" {
+	node.Id, node.ClientName = IdClientName(client)
-			protocolMap, _ := protocol.(map[string]interface{})
-			node.GenesisBlock = getAttribute(protocolMap, "genesis").(string)
-			node.NetworkId = getAttribute(protocolMap, "network").(float64)
-		}
-	}
 	return node
 }
 
-func getAttribute(protocolMap map[string]interface{}, protocol string) interface{} {
+func IdClientName(client *rpc.Client) (string, string) {
-	for key, val := range protocolMap {
+	var info p2p.NodeInfo
-		if key == protocol {
+	modules, _ := client.SupportedModules()
-			return val
+	if _, ok := modules["admin"]; ok {
-		}
+		client.CallContext(context.Background(), &info, "admin_nodeInfo")
+		return info.ID, info.Name
 	}
-	return nil
+	return "", ""
+}
+
+func NetworkId(client *rpc.Client) float64 {
+	var version string
+	client.CallContext(context.Background(), &version, "net_version")
+	networkId, _ := strconv.ParseFloat(version, 64)
+	return networkId
+}
+
+func ProtocolVersion(client *rpc.Client) string {
+	var protocolVersion string
+	client.CallContext(context.Background(), &protocolVersion, "eth_protocolVersion")
+	return protocolVersion
+}
+
+func GenesisBlock(client *rpc.Client) string {
+	var header *types.Header
+	client.CallContext(context.Background(), &header, "eth_getBlockByNumber", "0x0", false)
+	return header.Hash().Hex()
 }

pkg/geth/receipt_to_core_receipt.go

@@ -49,7 +49,7 @@ func setContractAddress(gethReceipt *types.Receipt) string {
 func dereferenceLogs(gethReceipt *types.Receipt) []core.Log {
 	logs := []core.Log{}
 	for _, log := range gethReceipt.Logs {
-		logs = append(logs, LogToCoreLog(*log))
+		logs = append(logs, ToCoreLog(*log))
 	}
 	return logs
 }

pkg/geth/testing/sample_abi.json

@@ -1 +1 @@
-[{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"},{"name":"_releaseTime","type":"uint256"}],"name":"mintTimelocked","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpause","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]
+[{"constant":true,"inputs":[],"name":"mintingFinished","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"finishMinting","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_amount","type":"uint256"},{"name":"_releaseTime","type":"uint256"}],"name":"mintTimelocked","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[],"name":"MintFinished","type":"event"},{"anonymous":false,"inputs":[],"name":"Pause","type":"event"},{"anonymous":false,"inputs":[],"name":"Unpause","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]

pkg/repositories/in_memory.go

@@ -3,7 +3,10 @@ package repositories
 import (
 	"fmt"
 
+	"errors"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
 )
 
 type InMemory struct {
@@ -11,16 +14,27 @@ type InMemory struct {
 	receipts                     map[string]core.Receipt
 	contracts                    map[string]core.Contract
 	logs                         map[string][]core.Log
+	logFilters                   map[string]filters.LogFilter
 	CreateOrUpdateBlockCallCount int
 }
 
+func (repository *InMemory) AddFilter(filter filters.LogFilter) error {
+	key := filter.Name
+	if _, ok := repository.logFilters[key]; ok || key == "" {
+		return errors.New("filter name not unique")
+	}
+	repository.logFilters[key] = filter
+	return nil
+}
+
 func NewInMemory() *InMemory {
 	return &InMemory{
 		CreateOrUpdateBlockCallCount: 0,
-		blocks:    make(map[int64]core.Block),
+		blocks:     make(map[int64]core.Block),
-		receipts:  make(map[string]core.Receipt),
+		receipts:   make(map[string]core.Receipt),
-		contracts: make(map[string]core.Contract),
+		contracts:  make(map[string]core.Contract),
-		logs:      make(map[string][]core.Log),
+		logs:       make(map[string][]core.Log),
+		logFilters: make(map[string]filters.LogFilter),
 	}
 }
 
@@ -102,6 +116,7 @@ func (repository *InMemory) CreateOrUpdateBlock(block core.Block) error {
 	repository.blocks[block.Number] = block
 	for _, transaction := range block.Transactions {
 		repository.receipts[transaction.Hash] = transaction.Receipt
+		repository.logs[transaction.TxHash] = transaction.Logs
 	}
 	return nil
 }

pkg/repositories/postgres.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/vulcanize/vulcanizedb/pkg/config"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
 )
@@ -62,35 +63,6 @@ func (repository Postgres) SetBlocksStatus(chainHead int64) {
 		cutoff)
 }
 
-func (repository Postgres) CreateLogs(logs []core.Log) error {
-	tx, _ := repository.Db.BeginTx(context.Background(), nil)
-	for _, tlog := range logs {
-		_, err := tx.Exec(
-			`INSERT INTO logs (block_number, address, tx_hash, index, topic0, topic1, topic2, topic3, data)
-                VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
-                ON CONFLICT (index, block_number)
-                  DO UPDATE
-                    SET block_number = $1,
-                   	    address = $2,
-                   	    tx_hash = $3,
-                   	    index = $4,
-                   	    topic0 = $5,
-                   	    topic1 = $6,
-                   	    topic2 = $7,
-                   	    topic3 = $8,
-                   	    data = $9
-                `,
-			tlog.BlockNumber, tlog.Address, tlog.TxHash, tlog.Index, tlog.Topics[0], tlog.Topics[1], tlog.Topics[2], tlog.Topics[3], tlog.Data,
-		)
-		if err != nil {
-			tx.Rollback()
-			return ErrDBInsertFailed
-		}
-	}
-	tx.Commit()
-	return nil
-}
-
 func (repository Postgres) FindLogs(address string, blockNumber int64) []core.Log {
 	logRows, _ := repository.Db.Query(
 		`SELECT block_number,
@@ -111,13 +83,16 @@ func (repository Postgres) FindLogs(address string, blockNumber int64) []core.Lo
 func (repository *Postgres) CreateNode(node *core.Node) error {
 	var nodeId int64
 	err := repository.Db.QueryRow(
-		`INSERT INTO nodes (genesis_block, network_id)
+		`INSERT INTO nodes (genesis_block, network_id, node_id, client_name)
-                VALUES ($1, $2)
+                VALUES ($1, $2, $3, $4)
-                ON CONFLICT (genesis_block, network_id)
+                ON CONFLICT (genesis_block, network_id, node_id)
                   DO UPDATE
-                    SET genesis_block = $1, network_id = $2
+                    SET genesis_block = $1,
+                    	network_id = $2,
+                    	node_id = $3,
+                    	client_name = $4
                 RETURNING id`,
-		node.GenesisBlock, node.NetworkId).Scan(&nodeId)
+		node.GenesisBlock, node.NetworkId, node.Id, node.ClientName).Scan(&nodeId)
 	if err != nil {
 		return ErrUnableToSetNode
 	}
@@ -329,29 +304,90 @@ func (repository Postgres) createTransaction(tx *sql.Tx, blockId int64, transact
 	err := tx.QueryRow(
 		`INSERT INTO transactions
 	   (block_id, tx_hash, tx_nonce, tx_to, tx_from, tx_gaslimit, tx_gasprice, tx_value, tx_input_data)
-	   VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+	   VALUES ($1, $2, $3, $4, $5, $6, $7,  cast(NULLIF($8, '') AS NUMERIC), $9)
 	   RETURNING id`,
 		blockId, transaction.Hash, transaction.Nonce, transaction.To, transaction.From, transaction.GasLimit, transaction.GasPrice, transaction.Value, transaction.Data).
 		Scan(&transactionId)
 	if err != nil {
 		return err
 	}
-	if transaction.Receipt.TxHash != "" {
+	if hasReceipt(transaction) {
-		err = repository.createReceipt(tx, transactionId, transaction.Receipt)
+		receiptId, err := repository.createReceipt(tx, transactionId, transaction.Receipt)
 		if err != nil {
 			return err
 		}
+		if hasLogs(transaction) {
+			err = repository.createLogs(tx, transaction.Receipt.Logs, receiptId)
+			if err != nil {
+				return err
+			}
+		}
 	}
 	return nil
 }
 
-func (repository Postgres) createReceipt(tx *sql.Tx, transactionId int, receipt core.Receipt) error {
+func hasLogs(transaction core.Transaction) bool {
+	return len(transaction.Receipt.Logs) > 0
+}
+
+func hasReceipt(transaction core.Transaction) bool {
+	return transaction.Receipt.TxHash != ""
+}
+
+func (repository Postgres) createReceipt(tx *sql.Tx, transactionId int, receipt core.Receipt) (int, error) {
 	//Not currently persisting log bloom filters
-	_, err := tx.Exec(
+	var receiptId int
+	err := tx.QueryRow(
 		`INSERT INTO receipts
                (contract_address, tx_hash, cumulative_gas_used, gas_used, state_root, status, transaction_id)
-               VALUES ($1, $2, $3, $4, $5, $6, $7)`,
+               VALUES ($1, $2, $3, $4, $5, $6, $7) 
-		receipt.ContractAddress, receipt.TxHash, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.StateRoot, receipt.Status, transactionId)
+               RETURNING id`,
+		receipt.ContractAddress, receipt.TxHash, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.StateRoot, receipt.Status, transactionId).Scan(&receiptId)
+	if err != nil {
+		return receiptId, err
+	}
+	return receiptId, nil
+}
+
+func (repository Postgres) createLogs(tx *sql.Tx, logs []core.Log, receiptId int) error {
+	for _, tlog := range logs {
+		_, err := tx.Exec(
+			`INSERT INTO logs (block_number, address, tx_hash, index, topic0, topic1, topic2, topic3, data, receipt_id)
+                VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+                `,
+			tlog.BlockNumber, tlog.Address, tlog.TxHash, tlog.Index, tlog.Topics[0], tlog.Topics[1], tlog.Topics[2], tlog.Topics[3], tlog.Data, receiptId,
+		)
+		if err != nil {
+			return ErrDBInsertFailed
+		}
+	}
+	return nil
+}
+
+func (repository Postgres) CreateLogs(logs []core.Log) error {
+	tx, _ := repository.Db.BeginTx(context.Background(), nil)
+	for _, tlog := range logs {
+		_, err := tx.Exec(
+			`INSERT INTO logs (block_number, address, tx_hash, index, topic0, topic1, topic2, topic3, data)
+                VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+                `,
+			tlog.BlockNumber, tlog.Address, tlog.TxHash, tlog.Index, tlog.Topics[0], tlog.Topics[1], tlog.Topics[2], tlog.Topics[3], tlog.Data,
+		)
+		if err != nil {
+			tx.Rollback()
+			return ErrDBInsertFailed
+		}
+	}
+	tx.Commit()
+	return nil
+}
+
+func (repository Postgres) AddFilter(query filters.LogFilter) error {
+	_, err := repository.Db.Exec(
+		`INSERT INTO log_filters 
+		(name, from_block, to_block, address, topic0, topic1, topic2, topic3)
+		VALUES ($1, NULLIF($2, -1), NULLIF($3, -1), $4, NULLIF($5, ''), NULLIF($6, ''), NULLIF($7, ''), NULLIF($8, ''))`,
+		query.Name, query.FromBlock, query.ToBlock, query.Address, query.Topics[0], query.Topics[1], query.Topics[2], query.Topics[3])
 	if err != nil {
 		return err
 	}
@@ -439,7 +475,7 @@ func (repository Postgres) loadLogs(logsRows *sql.Rows) []core.Log {
 		var txHash string
 		var index int64
 		var data string
-		topics := make([]string, 4)
+		var topics core.Topics
 		logsRows.Scan(&blockNumber, &address, &txHash, &index, &topics[0], &topics[1], &topics[2], &topics[3], &data)
 		log := core.Log{
 			BlockNumber: blockNumber,
@@ -448,7 +484,6 @@ func (repository Postgres) loadLogs(logsRows *sql.Rows) []core.Log {
 			Index:       index,
 			Data:        data,
 		}
-		log.Topics = make(map[int]string)
 		for i, topic := range topics {
 			log.Topics[i] = topic
 		}
@@ -467,7 +502,7 @@ func (repository Postgres) loadTransactions(transactionRows *sql.Rows) []core.Tr
 		var gasLimit int64
 		var gasPrice int64
 		var inputData string
-		var value int64
+		var value string
 		transactionRows.Scan(&hash, &nonce, &to, &from, &gasLimit, &gasPrice, &value, &inputData)
 		transaction := core.Transaction{
 			Hash:     hash,

pkg/repositories/postgres_test.go

@@ -7,6 +7,8 @@ import (
 	"io/ioutil"
 	"log"
 
+	"math/big"
+
 	"github.com/vulcanize/vulcanizedb/pkg/config"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/repositories"
@@ -38,6 +40,42 @@ var _ = Describe("Postgres repository", func() {
 		return repository
 	})
 
+	It("serializes big.Int to db", func() {
+		// postgres driver doesn't support go big.Int type
+		// various casts in golang uint64, int64, overflow for
+		// transaction value (in wei) even though
+		// postgres numeric can handle an arbitrary
+		// sized int, so use string representation of big.Int
+		// and cast on insert
+
+		cfg, _ := config.NewConfig("private")
+		pgConfig := config.DbConnectionString(cfg.Database)
+		db, err := sqlx.Connect("postgres", pgConfig)
+
+		bi := new(big.Int)
+		bi.SetString("34940183920000000000", 10)
+		Expect(bi.String()).To(Equal("34940183920000000000"))
+
+		defer db.Exec(`DROP TABLE IF EXISTS example`)
+		_, err = db.Exec("CREATE TABLE example ( id INTEGER, data NUMERIC )")
+		Expect(err).ToNot(HaveOccurred())
+
+		sqlStatement := `  
+			INSERT INTO example (id, data)
+			VALUES (1, cast($1 AS NUMERIC))`
+		_, err = db.Exec(sqlStatement, bi.String())
+		Expect(err).ToNot(HaveOccurred())
+
+		var data string
+		err = db.QueryRow(`SELECT data FROM example WHERE id = 1`).Scan(&data)
+		Expect(err).ToNot(HaveOccurred())
+
+		Expect(bi.String()).To(Equal(data))
+		actual := new(big.Int)
+		actual.SetString(data, 10)
+		Expect(actual).To(Equal(bi))
+	})
+
 	It("does not commit block if block is invalid", func() {
 		//badNonce violates db Nonce field length
 		badNonce := fmt.Sprintf("x %s", strings.Repeat("1", 100))
@@ -47,7 +85,7 @@ var _ = Describe("Postgres repository", func() {
 			Transactions: []core.Transaction{},
 		}
 		cfg, _ := config.NewConfig("private")
-		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1}
+		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1, Id: "x123", ClientName: "geth"}
 		repository, _ := repositories.NewPostgres(cfg.Database, node)
 
 		err1 := repository.CreateOrUpdateBlock(badBlock)
@@ -60,7 +98,7 @@ var _ = Describe("Postgres repository", func() {
 
 	It("throws error when can't connect to the database", func() {
 		invalidDatabase := config.Database{}
-		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1}
+		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1, Id: "x123", ClientName: "geth"}
 		_, err := repositories.NewPostgres(invalidDatabase, node)
 		Expect(err).To(Equal(repositories.ErrDBConnectionFailed))
 	})
@@ -68,7 +106,7 @@ var _ = Describe("Postgres repository", func() {
 	It("throws error when can't create node", func() {
 		cfg, _ := config.NewConfig("private")
 		badHash := fmt.Sprintf("x %s", strings.Repeat("1", 100))
-		node := core.Node{GenesisBlock: badHash, NetworkId: 1}
+		node := core.Node{GenesisBlock: badHash, NetworkId: 1, Id: "x123", ClientName: "geth"}
 		_, err := repositories.NewPostgres(cfg.Database, node)
 		Expect(err).To(Equal(repositories.ErrUnableToSetNode))
 	})
@@ -82,7 +120,7 @@ var _ = Describe("Postgres repository", func() {
 			TxHash:      badTxHash,
 		}
 		cfg, _ := config.NewConfig("private")
-		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1}
+		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1, Id: "x123", ClientName: "geth"}
 		repository, _ := repositories.NewPostgres(cfg.Database, node)
 
 		err := repository.CreateLogs([]core.Log{badLog})
@@ -101,7 +139,7 @@ var _ = Describe("Postgres repository", func() {
 			Transactions: []core.Transaction{badTransaction},
 		}
 		cfg, _ := config.NewConfig("private")
-		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1}
+		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1, Id: "x123", ClientName: "geth"}
 		repository, _ := repositories.NewPostgres(cfg.Database, node)
 
 		err1 := repository.CreateOrUpdateBlock(block)

pkg/repositories/repository.go

@@ -1,6 +1,9 @@
 package repositories
 
-import "github.com/vulcanize/vulcanizedb/pkg/core"
+import (
+	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
+)
 
 const (
 	blocksFromHeadBeforeFinal = 20
@@ -19,4 +22,5 @@ type Repository interface {
 	CreateLogs(log []core.Log) error
 	FindLogs(address string, blockNumber int64) []core.Log
 	SetBlocksStatus(chainHead int64)
+	AddFilter(filter filters.LogFilter) error
 }

pkg/repositories/testing/helpers.go

@@ -4,7 +4,10 @@ import (
 	"sort"
 	"strconv"
 
+	"math/big"
+
 	"github.com/vulcanize/vulcanizedb/pkg/core"
+	"github.com/vulcanize/vulcanizedb/pkg/filters"
 	"github.com/vulcanize/vulcanizedb/pkg/repositories"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -16,13 +19,19 @@ func ClearData(postgres repositories.Postgres) {
 	postgres.Db.MustExec("DELETE FROM blocks")
 	postgres.Db.MustExec("DELETE FROM logs")
 	postgres.Db.MustExec("DELETE FROM receipts")
+	postgres.Db.MustExec("DELETE FROM log_filters")
 }
 
 func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.Repository) {
 	var repository repositories.Repository
 
 	BeforeEach(func() {
-		node := core.Node{GenesisBlock: "GENESIS", NetworkId: 1}
+		node := core.Node{
+			GenesisBlock: "GENESIS",
+			NetworkId:    1,
+			Id:           "b6f90c0fdd8ec9607aed8ee45c69322e47b7063f0bfb7a29c8ecafab24d0a22d24dd2329b5ee6ed4125a03cb14e57fd584e67f9e53e6c631055cbbd82f080845",
+			ClientName:   "Geth/v1.7.2-stable-1db4ecdc/darwin-amd64/go1.9",
+		}
 		repository = buildRepository(node)
 	})
 
@@ -48,6 +57,8 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 			nodeTwo := core.Node{
 				GenesisBlock: "0x456",
 				NetworkId:    1,
+				Id:           "x123456",
+				ClientName:   "Geth",
 			}
 			repositoryTwo := buildRepository(nodeTwo)
 
@@ -191,7 +202,8 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 			nonce := uint64(10000)
 			to := "1234567890"
 			from := "0987654321"
-			value := int64(10)
+			var value = new(big.Int)
+			value.SetString("34940183920000000000", 10)
 			inputData := "0xf7d8c8830000000000000000000000000000000000000000000000000000000000037788000000000000000000000000000000000000000000000000000000000003bd14"
 			transaction := core.Transaction{
 				Hash:     "x1234",
@@ -200,7 +212,7 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 				Nonce:    nonce,
 				To:       to,
 				From:     from,
-				Value:    value,
+				Value:    value.String(),
 				Data:     inputData,
 			}
 			block := core.Block{
@@ -220,7 +232,7 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 			Expect(savedTransaction.Nonce).To(Equal(nonce))
 			Expect(savedTransaction.GasLimit).To(Equal(gasLimit))
 			Expect(savedTransaction.GasPrice).To(Equal(gasPrice))
-			Expect(savedTransaction.Value).To(Equal(value))
+			Expect(savedTransaction.Value).To(Equal(value.String()))
 		})
 
 	})
@@ -392,7 +404,7 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 				Index:       0,
 				Address:     "x123",
 				TxHash:      "x456",
-				Topics:      map[int]string{0: "x777", 1: "x888", 2: "x999"},
+				Topics:      core.Topics{0: "x777", 1: "x888", 2: "x999"},
 				Data:        "xabc",
 			}},
 			)
@@ -415,37 +427,13 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 			Expect(log).To(BeNil())
 		})
 
-		It("updates the log when log with when log with same block number and index is already present", func() {
-			repository.CreateLogs([]core.Log{{
-				BlockNumber: 1,
-				Index:       0,
-				Address:     "x123",
-				TxHash:      "x456",
-				Topics:      map[int]string{0: "x777", 1: "x888", 2: "x999"},
-				Data:        "xABC",
-			},
-			})
-			repository.CreateLogs([]core.Log{{
-				BlockNumber: 1,
-				Index:       0,
-				Address:     "x123",
-				TxHash:      "x456",
-				Topics:      map[int]string{0: "x777", 1: "x888", 2: "x999"},
-				Data:        "xXYZ",
-			},
-			})
-
-			log := repository.FindLogs("x123", 1)
-			Expect(log[0].Data).To(Equal("xXYZ"))
-		})
-
 		It("filters to the correct block number and address", func() {
 			repository.CreateLogs([]core.Log{{
 				BlockNumber: 1,
 				Index:       0,
 				Address:     "x123",
 				TxHash:      "x456",
-				Topics:      map[int]string{0: "x777", 1: "x888", 2: "x999"},
+				Topics:      core.Topics{0: "x777", 1: "x888", 2: "x999"},
 				Data:        "xabc",
 			}},
 			)
@@ -454,7 +442,7 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 				Index:       1,
 				Address:     "x123",
 				TxHash:      "x789",
-				Topics:      map[int]string{0: "x111", 1: "x222", 2: "x333"},
+				Topics:      core.Topics{0: "x111", 1: "x222", 2: "x333"},
 				Data:        "xdef",
 			}},
 			)
@@ -463,7 +451,7 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 				Index:       0,
 				Address:     "x123",
 				TxHash:      "x456",
-				Topics:      map[int]string{0: "x777", 1: "x888", 2: "x999"},
+				Topics:      core.Topics{0: "x777", 1: "x888", 2: "x999"},
 				Data:        "xabc",
 			}},
 			)
@@ -497,6 +485,85 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 					{blockNumber: 1, Index: 1}},
 			))
 		})
+
+		It("saves the logs attached to a receipt", func() {
+			logs := []core.Log{{
+				Address:     "0x8a4774fe82c63484afef97ca8d89a6ea5e21f973",
+				BlockNumber: 4745407,
+				Data:        "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000645a68669900000000000000000000000000000000000000000000003397684ab5869b0000000000000000000000000000000000000000000000000000000000005a36053200000000000000000000000099041f808d598b782d5a3e498681c2452a31da08",
+				Index:       86,
+				Topics: core.Topics{
+					0: "0x5a68669900000000000000000000000000000000000000000000000000000000",
+					1: "0x000000000000000000000000d0148dad63f73ce6f1b6c607e3413dcf1ff5f030",
+					2: "0x00000000000000000000000000000000000000000000003397684ab5869b0000",
+					3: "0x000000000000000000000000000000000000000000000000000000005a360532",
+				},
+				TxHash: "0x002c4799161d809b23f67884eb6598c9df5894929fe1a9ead97ca175d360f547",
+			}, {
+				Address:     "0x99041f808d598b782d5a3e498681c2452a31da08",
+				BlockNumber: 4745407,
+				Data:        "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000418178358",
+				Index:       87,
+				Topics: core.Topics{
+					0: "0x1817835800000000000000000000000000000000000000000000000000000000",
+					1: "0x0000000000000000000000008a4774fe82c63484afef97ca8d89a6ea5e21f973",
+					2: "0x0000000000000000000000000000000000000000000000000000000000000000",
+					3: "0x0000000000000000000000000000000000000000000000000000000000000000",
+				},
+				TxHash: "0x002c4799161d809b23f67884eb6598c9df5894929fe1a9ead97ca175d360f547",
+			}, {
+				Address:     "0x99041f808d598b782d5a3e498681c2452a31da08",
+				BlockNumber: 4745407,
+				Data:        "0x00000000000000000000000000000000000000000000003338f64c8423af4000",
+				Index:       88,
+				Topics: core.Topics{
+					0: "0x296ba4ca62c6c21c95e828080cb8aec7481b71390585605300a8a76f9e95b527",
+				},
+				TxHash: "0x002c4799161d809b23f67884eb6598c9df5894929fe1a9ead97ca175d360f547",
+			},
+			}
+			receipt := core.Receipt{
+				ContractAddress:   "",
+				CumulativeGasUsed: 7481414,
+				GasUsed:           60711,
+				Logs:              logs,
+				Bloom:             "0x00000800000000000000001000000000000000400000000080000000000000000000400000010000000000000000000000000000040000000000000002000000000000000000000000000000000000000000000000000000000000000000000000000000020000000000000000000800004000000000000001000000000000000000000000000002000000480000000000000002000000000000000020000000000000000000000000000000000000000080000000000180000c00000000000000002000002000000040000000000000000000000000000010000000000020000000000000000000002000000000000000000000000400800000000000000000",
+				Status:            1,
+				TxHash:            "0x002c4799161d809b23f67884eb6598c9df5894929fe1a9ead97ca175d360f547",
+			}
+			transaction :=
+				core.Transaction{
+					Hash:    receipt.TxHash,
+					Receipt: receipt,
+				}
+
+			block := core.Block{Transactions: []core.Transaction{transaction}}
+			err := repository.CreateOrUpdateBlock(block)
+			Expect(err).To(Not(HaveOccurred()))
+			retrievedLogs := repository.FindLogs("0x99041f808d598b782d5a3e498681c2452a31da08", 4745407)
+
+			expected := logs[1:]
+			Expect(retrievedLogs).To(Equal(expected))
+		})
+
+		It("still saves receipts without logs", func() {
+			receipt := core.Receipt{
+				TxHash: "0x002c4799161d809b23f67884eb6598c9df5894929fe1a9ead97ca175d360f547",
+			}
+			transaction := core.Transaction{
+				Hash:    receipt.TxHash,
+				Receipt: receipt,
+			}
+
+			block := core.Block{
+				Transactions: []core.Transaction{transaction},
+			}
+			repository.CreateOrUpdateBlock(block)
+
+			_, err := repository.FindReceipt(receipt.TxHash)
+
+			Expect(err).To(Not(HaveOccurred()))
+		})
 	})
 
 	Describe("Saving receipts", func() {
@@ -535,6 +602,43 @@ func AssertRepositoryBehavior(buildRepository func(node core.Node) repositories.
 			Expect(err).To(HaveOccurred())
 			Expect(receipt).To(BeZero())
 		})
+	})
 
+	Describe("LogFilter", func() {
+
+		It("inserts filter into watched events", func() {
+
+			logFilter := filters.LogFilter{
+				Name:      "TestFilter",
+				FromBlock: 1,
+				ToBlock:   2,
+				Address:   "0x8888f1f195afa192cfee860698584c030f4c9db1",
+				Topics: core.Topics{
+					"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+					"",
+					"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+					"",
+				},
+			}
+			err := repository.AddFilter(logFilter)
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("returns error if name is not provided", func() {
+
+			logFilter := filters.LogFilter{
+				FromBlock: 1,
+				ToBlock:   2,
+				Address:   "0x8888f1f195afa192cfee860698584c030f4c9db1",
+				Topics: core.Topics{
+					"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+					"",
+					"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
+					"",
+				},
+			}
+			err := repository.AddFilter(logFilter)
+			Expect(err).To(HaveOccurred())
+		})
 	})
 }

utils/utils.go

@@ -1,14 +1,14 @@
-package cmd
+package utils
 
 import (
 	"log"
 
 	"path/filepath"
 
-	"fmt"
-
 	"math/big"
 
+	"os"
+
 	"github.com/vulcanize/vulcanizedb/pkg/config"
 	"github.com/vulcanize/vulcanizedb/pkg/core"
 	"github.com/vulcanize/vulcanizedb/pkg/geth"
@@ -32,9 +32,7 @@ func LoadPostgres(database config.Database, node core.Node) repositories.Postgre
 }
 
 func ReadAbiFile(abiFilepath string) string {
-	if !filepath.IsAbs(abiFilepath) {
+	abiFilepath = AbsFilePath(abiFilepath)
-		abiFilepath = filepath.Join(config.ProjectRoot(), abiFilepath)
-	}
 	abi, err := geth.ReadAbiFile(abiFilepath)
 	if err != nil {
 		log.Fatalf("Error reading ABI file at \"%s\"\n %v", abiFilepath, err)
@@ -42,13 +40,22 @@ func ReadAbiFile(abiFilepath string) string {
 	return abi
 }
 
-func GetAbi(abiFilepath string, contractHash string) string {
+func AbsFilePath(filePath string) string {
+	if !filepath.IsAbs(filePath) {
+		cwd, _ := os.Getwd()
+		filePath = filepath.Join(cwd, filePath)
+	}
+	return filePath
+}
+
+func GetAbi(abiFilepath string, contractHash string, network string) string {
 	var contractAbiString string
 	if abiFilepath != "" {
 		contractAbiString = ReadAbiFile(abiFilepath)
 	} else {
-		etherscan := geth.NewEtherScanClient("https://api.etherscan.io")
+		url := geth.GenUrl(network)
-		fmt.Println("No ABI supplied. Retrieving ABI from Etherscan")
+		etherscan := geth.NewEtherScanClient(url)
+		log.Printf("No ABI supplied. Retrieving ABI from Etherscan: %s", url)
 		contractAbiString, _ = etherscan.GetAbi(contractHash)
 	}
 	_, err := geth.ParseAbi(contractAbiString)