Merge pull request #55 from 8thlight/update-godo

Update godo
This commit is contained in:
ericmeyer 2017-11-06 11:44:55 -06:00 committed by GitHub
commit cf5f2f28db
10 changed files with 233 additions and 58 deletions

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@ -5,12 +5,7 @@ import (
"fmt"
"github.com/8thlight/vulcanizedb/blockchain_listener"
"github.com/8thlight/vulcanizedb/config"
"github.com/8thlight/vulcanizedb/core"
"github.com/8thlight/vulcanizedb/geth"
"github.com/8thlight/vulcanizedb/observers"
"github.com/jmoiron/sqlx"
do "gopkg.in/godo.v2"
)
@ -22,29 +17,12 @@ func parseEnvironment(context *do.Context) string {
return environment
}
func startBlockchainListener(cfg config.Config) {
fmt.Println("Client Path ", cfg.Client.IPCPath)
blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
loggingObserver := observers.BlockchainLoggingObserver{}
connectString := config.DbConnectionString(cfg.Database)
db, err := sqlx.Connect("postgres", connectString)
if err != nil {
log.Fatalf("Error connecting to DB: %v\n", err)
}
dbObserver := (observers.BlockchainDBObserver{Db: db})
listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{
loggingObserver,
dbObserver,
})
listener.Start()
}
func tasks(p *do.Project) {
p.Task("run", nil, func(context *do.Context) {
environment := parseEnvironment(context)
cfg := config.NewConfig(environment)
startBlockchainListener(cfg)
context.Start(`go run main.go --environment={{.environment}}`,
do.M{"environment": environment, "$in": "cmd/run"})
})
p.Task("migrate", nil, func(context *do.Context) {

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@ -11,7 +11,7 @@ import (
var _ = Describe("Blockchain listeners", func() {
It("starts with no blocks", func(done Done) {
observer := fakes.NewFakeBlockchainObserverTwo()
observer := fakes.NewFakeBlockchainObserver()
blockchain := &fakes.Blockchain{}
blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
@ -21,7 +21,7 @@ var _ = Describe("Blockchain listeners", func() {
}, 1)
It("sees when one block was added", func(done Done) {
observer := fakes.NewFakeBlockchainObserverTwo()
observer := fakes.NewFakeBlockchainObserver()
blockchain := &fakes.Blockchain{}
listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
go listener.Start()
@ -37,7 +37,7 @@ var _ = Describe("Blockchain listeners", func() {
}, 1)
It("sees a second block", func(done Done) {
observer := fakes.NewFakeBlockchainObserverTwo()
observer := fakes.NewFakeBlockchainObserver()
blockchain := &fakes.Blockchain{}
listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
go listener.Start()
@ -55,7 +55,7 @@ var _ = Describe("Blockchain listeners", func() {
}, 1)
It("stops listening", func(done Done) {
observer := fakes.NewFakeBlockchainObserverTwo()
observer := fakes.NewFakeBlockchainObserver()
blockchain := &fakes.Blockchain{}
listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
go listener.Start()

38
cmd/run/main.go Normal file
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@ -0,0 +1,38 @@
package main
import (
"fmt"
"log"
"flag"
"github.com/8thlight/vulcanizedb/blockchain_listener"
"github.com/8thlight/vulcanizedb/config"
"github.com/8thlight/vulcanizedb/core"
"github.com/8thlight/vulcanizedb/geth"
"github.com/8thlight/vulcanizedb/observers"
"github.com/8thlight/vulcanizedb/repositories"
"github.com/jmoiron/sqlx"
)
func main() {
environment := flag.String("environment", "", "Environment name")
flag.Parse()
cfg := config.NewConfig(*environment)
fmt.Println("Client Path ", cfg.Client.IPCPath)
blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
loggingObserver := observers.BlockchainLoggingObserver{}
connectString := config.DbConnectionString(cfg.Database)
db, err := sqlx.Connect("postgres", connectString)
if err != nil {
log.Fatalf("Error connecting to DB: %v\n", err)
}
repository := repositories.NewPostgres(db)
dbObserver := observers.NewBlockchainDbObserver(repository)
listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{
loggingObserver,
dbObserver,
})
listener.Start()
}

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@ -11,7 +11,7 @@ func (observer *BlockchainObserver) LastBlock() core.Block {
return observer.CurrentBlocks[len(observer.CurrentBlocks)-1]
}
func NewFakeBlockchainObserverTwo() *BlockchainObserver {
func NewFakeBlockchainObserver() *BlockchainObserver {
return &BlockchainObserver{
WasNotified: make(chan bool),
}

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@ -26,7 +26,7 @@ var _ = Describe("Reading from the Geth blockchain", func() {
var observer *fakes.BlockchainObserver
BeforeEach(func() {
observer = fakes.NewFakeBlockchainObserverTwo()
observer = fakes.NewFakeBlockchainObserver()
blockchain := geth.NewGethBlockchain(RunTimePath() + "/test_data_dir/geth.ipc")
observers := []core.BlockchainObserver{observer}
listener = blockchain_listener.NewBlockchainListener(blockchain, observers)

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@ -3,13 +3,16 @@ package observers
import (
"github.com/8thlight/vulcanizedb/core"
"github.com/8thlight/vulcanizedb/repositories"
"github.com/jmoiron/sqlx"
)
type BlockchainDBObserver struct {
Db *sqlx.DB
type BlockchainDbObserver struct {
repository repositories.Repository
}
func (observer BlockchainDBObserver) NotifyBlockAdded(block core.Block) {
repositories.NewPostgres(observer.Db).CreateBlock(block)
func NewBlockchainDbObserver(repository repositories.Repository) BlockchainDbObserver {
return BlockchainDbObserver{repository: repository}
}
func (observer BlockchainDbObserver) NotifyBlockAdded(block core.Block) {
observer.repository.CreateBlock(block)
}

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@ -1,41 +1,23 @@
package observers_test
import (
"runtime"
"github.com/8thlight/vulcanizedb/config"
"github.com/8thlight/vulcanizedb/core"
"github.com/8thlight/vulcanizedb/observers"
"github.com/8thlight/vulcanizedb/repositories"
"github.com/jmoiron/sqlx"
_ "github.com/lib/pq"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var (
_, filename, _, _ = runtime.Caller(0)
)
var _ = Describe("Saving blocks to the database", func() {
var db *sqlx.DB
var err error
var repository *repositories.InMemory
BeforeEach(func() {
cfg := config.NewConfig("private")
pgConfig := config.DbConnectionString(cfg.Database)
db, err = sqlx.Connect("postgres", pgConfig)
db.MustExec("DELETE FROM transactions")
db.MustExec("DELETE FROM blocks")
})
AfterEach(func() {
db.Close()
repository = repositories.NewInMemory()
})
It("implements the observer interface", func() {
var observer core.BlockchainObserver = observers.BlockchainDBObserver{Db: db}
var observer core.BlockchainObserver = observers.NewBlockchainDbObserver(repository)
Expect(observer).NotTo(BeNil())
})
@ -45,10 +27,9 @@ var _ = Describe("Saving blocks to the database", func() {
Transactions: []core.Transaction{{}},
}
observer := observers.BlockchainDBObserver{Db: db}
observer := observers.NewBlockchainDbObserver(repository)
observer.NotifyBlockAdded(block)
repository := repositories.NewPostgres(db)
savedBlock := repository.FindBlockByNumber(123)
Expect(savedBlock).NotTo(BeNil())
Expect(len(savedBlock.Transactions)).To(Equal(1))

27
repositories/in_memory.go Normal file
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@ -0,0 +1,27 @@
package repositories
import (
"github.com/8thlight/vulcanizedb/core"
)
type InMemory struct {
blocks map[int64]*core.Block
}
func NewInMemory() *InMemory {
return &InMemory{
blocks: make(map[int64]*core.Block),
}
}
func (repository *InMemory) CreateBlock(block core.Block) {
repository.blocks[block.Number] = &block
}
func (repository *InMemory) BlockCount() int {
return len(repository.blocks)
}
func (repository *InMemory) FindBlockByNumber(blockNumber int64) *core.Block {
return repository.blocks[blockNumber]
}

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@ -0,0 +1,141 @@
package repositories_test
import (
"github.com/8thlight/vulcanizedb/core"
"github.com/8thlight/vulcanizedb/repositories"
_ "github.com/lib/pq"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("The In Memory Repository", func() {
Describe("Saving blocks", func() {
It("starts with no blocks", func() {
count := buildRepository().BlockCount()
Expect(count).Should(Equal(0))
})
It("increments the block count", func() {
block := core.Block{Number: 123}
repository := buildRepository()
repository.CreateBlock(block)
Expect(repository.BlockCount()).To(Equal(1))
})
It("saves the attributes of the block", func() {
blockNumber := int64(123)
gasLimit := int64(1000000)
gasUsed := int64(10)
blockHash := "x123"
blockParentHash := "x456"
blockNonce := "0x881db2ca900682e9a9"
blockTime := int64(1508981640)
uncleHash := "x789"
blockSize := int64(1000)
difficulty := int64(10)
block := core.Block{
Difficulty: difficulty,
GasLimit: gasLimit,
GasUsed: gasUsed,
Hash: blockHash,
Nonce: blockNonce,
Number: blockNumber,
ParentHash: blockParentHash,
Size: blockSize,
Time: blockTime,
UncleHash: uncleHash,
}
repository := buildRepository()
repository.CreateBlock(block)
savedBlock := repository.FindBlockByNumber(blockNumber)
Expect(savedBlock.Difficulty).To(Equal(difficulty))
Expect(savedBlock.GasLimit).To(Equal(gasLimit))
Expect(savedBlock.GasUsed).To(Equal(gasUsed))
Expect(savedBlock.Hash).To(Equal(blockHash))
Expect(savedBlock.Nonce).To(Equal(blockNonce))
Expect(savedBlock.Number).To(Equal(blockNumber))
Expect(savedBlock.ParentHash).To(Equal(blockParentHash))
Expect(savedBlock.Size).To(Equal(blockSize))
Expect(savedBlock.Time).To(Equal(blockTime))
Expect(savedBlock.UncleHash).To(Equal(uncleHash))
})
It("does not find a block when searching for a number that does not exist", func() {
repository := buildRepository()
savedBlock := repository.FindBlockByNumber(111)
Expect(savedBlock).To(BeNil())
})
It("saves one transaction associated to the block", func() {
block := core.Block{
Number: 123,
Transactions: []core.Transaction{{}},
}
repository := buildRepository()
repository.CreateBlock(block)
savedBlock := repository.FindBlockByNumber(123)
Expect(len(savedBlock.Transactions)).To(Equal(1))
})
It("saves two transactions associated to the block", func() {
block := core.Block{
Number: 123,
Transactions: []core.Transaction{{}, {}},
}
repository := buildRepository()
repository.CreateBlock(block)
savedBlock := repository.FindBlockByNumber(123)
Expect(len(savedBlock.Transactions)).To(Equal(2))
})
It("saves the attributes associated to a transaction", func() {
gasLimit := int64(5000)
gasPrice := int64(3)
nonce := uint64(10000)
to := "1234567890"
value := int64(10)
transaction := core.Transaction{
Hash: "x1234",
GasPrice: gasPrice,
GasLimit: gasLimit,
Nonce: nonce,
To: to,
Value: value,
}
block := core.Block{
Number: 123,
Transactions: []core.Transaction{transaction},
}
repository := buildRepository()
repository.CreateBlock(block)
savedBlock := repository.FindBlockByNumber(123)
Expect(len(savedBlock.Transactions)).To(Equal(1))
savedTransaction := savedBlock.Transactions[0]
Expect(savedTransaction.Hash).To(Equal(transaction.Hash))
Expect(savedTransaction.To).To(Equal(to))
Expect(savedTransaction.Nonce).To(Equal(nonce))
Expect(savedTransaction.GasLimit).To(Equal(gasLimit))
Expect(savedTransaction.GasPrice).To(Equal(gasPrice))
Expect(savedTransaction.Value).To(Equal(value))
})
})
})
func buildRepository() *repositories.InMemory {
return repositories.NewInMemory()
}

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@ -0,0 +1,7 @@
package repositories
import "github.com/8thlight/vulcanizedb/core"
type Repository interface {
CreateBlock(block core.Block)
}