commit
cf5f2f28db
@ -5,12 +5,7 @@ import (
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"fmt"
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"github.com/8thlight/vulcanizedb/blockchain_listener"
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"github.com/8thlight/vulcanizedb/config"
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"github.com/8thlight/vulcanizedb/core"
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"github.com/8thlight/vulcanizedb/geth"
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"github.com/8thlight/vulcanizedb/observers"
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"github.com/jmoiron/sqlx"
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do "gopkg.in/godo.v2"
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)
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@ -22,29 +17,12 @@ func parseEnvironment(context *do.Context) string {
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return environment
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}
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func startBlockchainListener(cfg config.Config) {
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fmt.Println("Client Path ", cfg.Client.IPCPath)
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blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
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loggingObserver := observers.BlockchainLoggingObserver{}
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connectString := config.DbConnectionString(cfg.Database)
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db, err := sqlx.Connect("postgres", connectString)
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if err != nil {
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log.Fatalf("Error connecting to DB: %v\n", err)
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}
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dbObserver := (observers.BlockchainDBObserver{Db: db})
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{
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loggingObserver,
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dbObserver,
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})
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listener.Start()
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}
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func tasks(p *do.Project) {
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p.Task("run", nil, func(context *do.Context) {
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environment := parseEnvironment(context)
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cfg := config.NewConfig(environment)
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startBlockchainListener(cfg)
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context.Start(`go run main.go --environment={{.environment}}`,
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do.M{"environment": environment, "$in": "cmd/run"})
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})
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p.Task("migrate", nil, func(context *do.Context) {
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@ -11,7 +11,7 @@ import (
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var _ = Describe("Blockchain listeners", func() {
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It("starts with no blocks", func(done Done) {
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observer := fakes.NewFakeBlockchainObserverTwo()
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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@ -21,7 +21,7 @@ var _ = Describe("Blockchain listeners", func() {
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}, 1)
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It("sees when one block was added", func(done Done) {
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observer := fakes.NewFakeBlockchainObserverTwo()
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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@ -37,7 +37,7 @@ var _ = Describe("Blockchain listeners", func() {
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}, 1)
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It("sees a second block", func(done Done) {
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observer := fakes.NewFakeBlockchainObserverTwo()
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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@ -55,7 +55,7 @@ var _ = Describe("Blockchain listeners", func() {
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}, 1)
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It("stops listening", func(done Done) {
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observer := fakes.NewFakeBlockchainObserverTwo()
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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38
cmd/run/main.go
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38
cmd/run/main.go
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@ -0,0 +1,38 @@
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package main
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import (
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"fmt"
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"log"
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"flag"
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"github.com/8thlight/vulcanizedb/blockchain_listener"
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"github.com/8thlight/vulcanizedb/config"
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"github.com/8thlight/vulcanizedb/core"
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"github.com/8thlight/vulcanizedb/geth"
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"github.com/8thlight/vulcanizedb/observers"
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"github.com/8thlight/vulcanizedb/repositories"
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"github.com/jmoiron/sqlx"
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)
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func main() {
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environment := flag.String("environment", "", "Environment name")
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flag.Parse()
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cfg := config.NewConfig(*environment)
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fmt.Println("Client Path ", cfg.Client.IPCPath)
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blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
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loggingObserver := observers.BlockchainLoggingObserver{}
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connectString := config.DbConnectionString(cfg.Database)
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db, err := sqlx.Connect("postgres", connectString)
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if err != nil {
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log.Fatalf("Error connecting to DB: %v\n", err)
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}
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repository := repositories.NewPostgres(db)
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dbObserver := observers.NewBlockchainDbObserver(repository)
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{
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loggingObserver,
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dbObserver,
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})
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listener.Start()
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}
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@ -11,7 +11,7 @@ func (observer *BlockchainObserver) LastBlock() core.Block {
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return observer.CurrentBlocks[len(observer.CurrentBlocks)-1]
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}
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func NewFakeBlockchainObserverTwo() *BlockchainObserver {
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func NewFakeBlockchainObserver() *BlockchainObserver {
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return &BlockchainObserver{
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WasNotified: make(chan bool),
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}
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@ -26,7 +26,7 @@ var _ = Describe("Reading from the Geth blockchain", func() {
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var observer *fakes.BlockchainObserver
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BeforeEach(func() {
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observer = fakes.NewFakeBlockchainObserverTwo()
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observer = fakes.NewFakeBlockchainObserver()
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blockchain := geth.NewGethBlockchain(RunTimePath() + "/test_data_dir/geth.ipc")
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observers := []core.BlockchainObserver{observer}
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listener = blockchain_listener.NewBlockchainListener(blockchain, observers)
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@ -3,13 +3,16 @@ package observers
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import (
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"github.com/8thlight/vulcanizedb/core"
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"github.com/8thlight/vulcanizedb/repositories"
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"github.com/jmoiron/sqlx"
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)
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type BlockchainDBObserver struct {
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Db *sqlx.DB
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type BlockchainDbObserver struct {
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repository repositories.Repository
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}
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func (observer BlockchainDBObserver) NotifyBlockAdded(block core.Block) {
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repositories.NewPostgres(observer.Db).CreateBlock(block)
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func NewBlockchainDbObserver(repository repositories.Repository) BlockchainDbObserver {
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return BlockchainDbObserver{repository: repository}
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}
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func (observer BlockchainDbObserver) NotifyBlockAdded(block core.Block) {
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observer.repository.CreateBlock(block)
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}
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package observers_test
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import (
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"runtime"
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"github.com/8thlight/vulcanizedb/config"
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"github.com/8thlight/vulcanizedb/core"
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"github.com/8thlight/vulcanizedb/observers"
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"github.com/8thlight/vulcanizedb/repositories"
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"github.com/jmoiron/sqlx"
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_ "github.com/lib/pq"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var (
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_, filename, _, _ = runtime.Caller(0)
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)
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var _ = Describe("Saving blocks to the database", func() {
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var db *sqlx.DB
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var err error
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var repository *repositories.InMemory
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BeforeEach(func() {
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cfg := config.NewConfig("private")
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pgConfig := config.DbConnectionString(cfg.Database)
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db, err = sqlx.Connect("postgres", pgConfig)
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db.MustExec("DELETE FROM transactions")
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db.MustExec("DELETE FROM blocks")
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})
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AfterEach(func() {
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db.Close()
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repository = repositories.NewInMemory()
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})
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It("implements the observer interface", func() {
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var observer core.BlockchainObserver = observers.BlockchainDBObserver{Db: db}
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var observer core.BlockchainObserver = observers.NewBlockchainDbObserver(repository)
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Expect(observer).NotTo(BeNil())
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})
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@ -45,10 +27,9 @@ var _ = Describe("Saving blocks to the database", func() {
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Transactions: []core.Transaction{{}},
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}
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observer := observers.BlockchainDBObserver{Db: db}
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observer := observers.NewBlockchainDbObserver(repository)
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observer.NotifyBlockAdded(block)
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repository := repositories.NewPostgres(db)
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savedBlock := repository.FindBlockByNumber(123)
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Expect(savedBlock).NotTo(BeNil())
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Expect(len(savedBlock.Transactions)).To(Equal(1))
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27
repositories/in_memory.go
Normal file
27
repositories/in_memory.go
Normal file
@ -0,0 +1,27 @@
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package repositories
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import (
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"github.com/8thlight/vulcanizedb/core"
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)
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type InMemory struct {
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blocks map[int64]*core.Block
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}
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func NewInMemory() *InMemory {
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return &InMemory{
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blocks: make(map[int64]*core.Block),
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}
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}
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func (repository *InMemory) CreateBlock(block core.Block) {
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repository.blocks[block.Number] = &block
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}
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func (repository *InMemory) BlockCount() int {
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return len(repository.blocks)
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}
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func (repository *InMemory) FindBlockByNumber(blockNumber int64) *core.Block {
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return repository.blocks[blockNumber]
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}
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141
repositories/in_memory_test.go
Normal file
141
repositories/in_memory_test.go
Normal file
@ -0,0 +1,141 @@
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package repositories_test
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import (
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"github.com/8thlight/vulcanizedb/core"
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"github.com/8thlight/vulcanizedb/repositories"
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_ "github.com/lib/pq"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("The In Memory Repository", func() {
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Describe("Saving blocks", func() {
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It("starts with no blocks", func() {
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count := buildRepository().BlockCount()
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Expect(count).Should(Equal(0))
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})
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It("increments the block count", func() {
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block := core.Block{Number: 123}
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repository := buildRepository()
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repository.CreateBlock(block)
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Expect(repository.BlockCount()).To(Equal(1))
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})
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It("saves the attributes of the block", func() {
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blockNumber := int64(123)
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gasLimit := int64(1000000)
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gasUsed := int64(10)
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blockHash := "x123"
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blockParentHash := "x456"
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blockNonce := "0x881db2ca900682e9a9"
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blockTime := int64(1508981640)
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uncleHash := "x789"
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blockSize := int64(1000)
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difficulty := int64(10)
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block := core.Block{
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Difficulty: difficulty,
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GasLimit: gasLimit,
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GasUsed: gasUsed,
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Hash: blockHash,
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Nonce: blockNonce,
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Number: blockNumber,
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ParentHash: blockParentHash,
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Size: blockSize,
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Time: blockTime,
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UncleHash: uncleHash,
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}
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repository := buildRepository()
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repository.CreateBlock(block)
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savedBlock := repository.FindBlockByNumber(blockNumber)
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Expect(savedBlock.Difficulty).To(Equal(difficulty))
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Expect(savedBlock.GasLimit).To(Equal(gasLimit))
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Expect(savedBlock.GasUsed).To(Equal(gasUsed))
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Expect(savedBlock.Hash).To(Equal(blockHash))
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Expect(savedBlock.Nonce).To(Equal(blockNonce))
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Expect(savedBlock.Number).To(Equal(blockNumber))
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Expect(savedBlock.ParentHash).To(Equal(blockParentHash))
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Expect(savedBlock.Size).To(Equal(blockSize))
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Expect(savedBlock.Time).To(Equal(blockTime))
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Expect(savedBlock.UncleHash).To(Equal(uncleHash))
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})
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It("does not find a block when searching for a number that does not exist", func() {
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repository := buildRepository()
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savedBlock := repository.FindBlockByNumber(111)
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Expect(savedBlock).To(BeNil())
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})
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It("saves one transaction associated to the block", func() {
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block := core.Block{
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Number: 123,
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Transactions: []core.Transaction{{}},
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}
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repository := buildRepository()
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repository.CreateBlock(block)
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savedBlock := repository.FindBlockByNumber(123)
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Expect(len(savedBlock.Transactions)).To(Equal(1))
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})
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It("saves two transactions associated to the block", func() {
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block := core.Block{
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Number: 123,
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Transactions: []core.Transaction{{}, {}},
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}
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repository := buildRepository()
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repository.CreateBlock(block)
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savedBlock := repository.FindBlockByNumber(123)
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Expect(len(savedBlock.Transactions)).To(Equal(2))
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})
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It("saves the attributes associated to a transaction", func() {
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gasLimit := int64(5000)
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gasPrice := int64(3)
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nonce := uint64(10000)
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to := "1234567890"
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value := int64(10)
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transaction := core.Transaction{
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Hash: "x1234",
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GasPrice: gasPrice,
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GasLimit: gasLimit,
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Nonce: nonce,
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To: to,
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Value: value,
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}
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block := core.Block{
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Number: 123,
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Transactions: []core.Transaction{transaction},
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}
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repository := buildRepository()
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repository.CreateBlock(block)
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savedBlock := repository.FindBlockByNumber(123)
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Expect(len(savedBlock.Transactions)).To(Equal(1))
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savedTransaction := savedBlock.Transactions[0]
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Expect(savedTransaction.Hash).To(Equal(transaction.Hash))
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Expect(savedTransaction.To).To(Equal(to))
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Expect(savedTransaction.Nonce).To(Equal(nonce))
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Expect(savedTransaction.GasLimit).To(Equal(gasLimit))
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Expect(savedTransaction.GasPrice).To(Equal(gasPrice))
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Expect(savedTransaction.Value).To(Equal(value))
|
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})
|
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})
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})
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func buildRepository() *repositories.InMemory {
|
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return repositories.NewInMemory()
|
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}
|
7
repositories/repository.go
Normal file
7
repositories/repository.go
Normal file
@ -0,0 +1,7 @@
|
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package repositories
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||||
|
||||
import "github.com/8thlight/vulcanizedb/core"
|
||||
|
||||
type Repository interface {
|
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CreateBlock(block core.Block)
|
||||
}
|
Loading…
Reference in New Issue
Block a user