Add ability to populate missing blocks
* The command populates up to the highest known block number * The anticipated use case is that the listener will be running in parallel to the populateBlocks command * This will mean that the listener is responsible for picking up new blocks, and the populateBlocks command is reposible for historical blocks * Reformat SQL statements
This commit is contained in:
parent
cdc861e5f2
commit
4c84173bc0
@ -25,6 +25,16 @@ func tasks(p *do.Project) {
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do.M{"environment": environment, "$in": "cmd/run"})
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})
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p.Task("populateBlocks", nil, func(context *do.Context) {
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environment := parseEnvironment(context)
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startingNumber := context.Args.MayInt(-1, "starting-number")
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if startingNumber < 0 {
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log.Fatalln("--starting-number required")
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}
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context.Start(`go run main.go --environment={{.environment}} --starting-number={{.startingNumber}}`,
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do.M{"environment": environment, "startingNumber": startingNumber, "$in": "cmd/populate_blocks"})
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})
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p.Task("migrate", nil, func(context *do.Context) {
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environment := parseEnvironment(context)
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cfg := config.NewConfig(environment)
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@ -65,6 +65,12 @@ The default location for Ethereum is:
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1. Start a blockchain.
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2. In a separate terminal start listener (ipcDir location)
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- `godo run -- --environment=<some-environment>`
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## Retrieving Historical Data
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1. Start a blockchain.
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2. In a separate terminal start listener (ipcDir location)
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- `godo populateBlocks -- --environment=<some-environment> --starting-number=<starting-block-number>`
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### Configuring Additional Environments
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32
cmd/populate_blocks/main.go
Normal file
32
cmd/populate_blocks/main.go
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@ -0,0 +1,32 @@
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package main
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import (
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"flag"
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"log"
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"fmt"
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"github.com/8thlight/vulcanizedb/pkg/config"
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"github.com/8thlight/vulcanizedb/pkg/geth"
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"github.com/8thlight/vulcanizedb/pkg/history"
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"github.com/8thlight/vulcanizedb/pkg/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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startingBlockNumber := flag.Int("starting-number", -1, "First block to fill from")
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flag.Parse()
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cfg := config.NewConfig(*environment)
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blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
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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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numberOfBlocksCreated := history.PopulateBlocks(blockchain, repository, int64(*startingBlockNumber))
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fmt.Printf("Populated %d blocks", numberOfBlocksCreated)
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}
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@ -14,11 +14,12 @@ var _ = Describe("Reading from the Geth blockchain", func() {
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var listener blockchain_listener.BlockchainListener
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var observer *fakes.BlockchainObserver
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var blockchain *geth.GethBlockchain
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BeforeEach(func() {
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observer = fakes.NewFakeBlockchainObserver()
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cfg := config.NewConfig("private")
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blockchain := geth.NewGethBlockchain(cfg.Client.IPCPath)
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blockchain = geth.NewGethBlockchain(cfg.Client.IPCPath)
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observers := []core.BlockchainObserver{observer}
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listener = blockchain_listener.NewBlockchainListener(blockchain, observers)
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})
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@ -43,4 +44,14 @@ var _ = Describe("Reading from the Geth blockchain", func() {
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close(done)
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}, 10)
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It("retrieves the genesis block and first block", func(done Done) {
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genesisBlock := blockchain.GetBlockByNumber(int64(0))
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firstBlock := blockchain.GetBlockByNumber(int64(1))
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Expect(genesisBlock.Number).To(Equal(int64(0)))
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Expect(firstBlock.Number).To(Equal(int64(1)))
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close(done)
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}, 10)
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})
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@ -12,7 +12,7 @@ var _ = Describe("Blockchain listeners", func() {
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It("starts with no blocks", func(done Done) {
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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blockchain := fakes.NewBlockchain()
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blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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@ -22,7 +22,7 @@ var _ = Describe("Blockchain listeners", func() {
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It("sees when one block was added", func(done Done) {
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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blockchain := fakes.NewBlockchain()
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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@ -38,7 +38,7 @@ var _ = Describe("Blockchain listeners", func() {
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It("sees a second block", func(done Done) {
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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blockchain := fakes.NewBlockchain()
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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@ -56,7 +56,7 @@ var _ = Describe("Blockchain listeners", func() {
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It("stops listening", func(done Done) {
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observer := fakes.NewFakeBlockchainObserver()
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blockchain := &fakes.Blockchain{}
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blockchain := fakes.NewBlockchain()
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listener := blockchain_listener.NewBlockchainListener(blockchain, []core.BlockchainObserver{observer})
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go listener.Start()
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@ -1,6 +1,7 @@
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package core
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type Blockchain interface {
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GetBlockByNumber(blockNumber int64) Block
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SubscribeToBlocks(blocks chan Block)
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StartListening()
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StopListening()
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@ -3,16 +3,36 @@ package fakes
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import "github.com/8thlight/vulcanizedb/pkg/core"
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type Blockchain struct {
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outputBlocks chan core.Block
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blocks map[int64]core.Block
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blocksChannel chan core.Block
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WasToldToStop bool
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}
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func (blockchain *Blockchain) SubscribeToBlocks(outputBlocks chan core.Block) {
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blockchain.outputBlocks = outputBlocks
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func NewBlockchain() *Blockchain {
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return &Blockchain{blocks: make(map[int64]core.Block)}
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}
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func (blockchain Blockchain) AddBlock(block core.Block) {
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blockchain.outputBlocks <- block
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func NewBlockchainWithBlocks(blocks []core.Block) *Blockchain {
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blockNumberToBlocks := make(map[int64]core.Block)
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for _, block := range blocks {
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blockNumberToBlocks[block.Number] = block
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}
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return &Blockchain{
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blocks: blockNumberToBlocks,
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}
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}
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func (blockchain *Blockchain) GetBlockByNumber(blockNumber int64) core.Block {
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return blockchain.blocks[blockNumber]
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}
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func (blockchain *Blockchain) SubscribeToBlocks(outputBlocks chan core.Block) {
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blockchain.blocksChannel = outputBlocks
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}
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func (blockchain *Blockchain) AddBlock(block core.Block) {
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blockchain.blocks[block.Number] = block
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blockchain.blocksChannel <- block
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}
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func (*Blockchain) StartListening() {}
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@ -3,6 +3,8 @@ package geth
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import (
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"fmt"
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"math/big"
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"github.com/8thlight/vulcanizedb/pkg/core"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/core/types"
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@ -17,6 +19,11 @@ type GethBlockchain struct {
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newHeadSubscription ethereum.Subscription
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}
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func (blockchain *GethBlockchain) GetBlockByNumber(blockNumber int64) core.Block {
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gethBlock, _ := blockchain.client.BlockByNumber(context.Background(), big.NewInt(blockNumber))
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return GethBlockToCoreBlock(gethBlock)
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}
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func NewGethBlockchain(ipcPath string) *GethBlockchain {
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fmt.Printf("Creating Geth Blockchain to: %s\n", ipcPath)
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blockchain := GethBlockchain{}
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@ -36,10 +43,8 @@ func (blockchain *GethBlockchain) SubscribeToBlocks(blocks chan core.Block) {
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}
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func (blockchain *GethBlockchain) StartListening() {
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myContext := context.Background()
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for header := range blockchain.readGethHeaders {
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gethBlock, _ := blockchain.client.BlockByNumber(myContext, header.Number)
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block := GethBlockToCoreBlock(gethBlock)
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block := blockchain.GetBlockByNumber(header.Number.Int64())
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blockchain.outputBlocks <- block
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}
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}
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13
pkg/history/history_suite_test.go
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13
pkg/history/history_suite_test.go
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package history_test
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import (
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"testing"
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)
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func TestHistory(t *testing.T) {
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RegisterFailHandler(Fail)
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RunSpecs(t, "History Suite")
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}
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15
pkg/history/populate_blocks.go
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15
pkg/history/populate_blocks.go
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package history
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import (
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"github.com/8thlight/vulcanizedb/pkg/core"
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"github.com/8thlight/vulcanizedb/pkg/repositories"
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)
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func PopulateBlocks(blockchain core.Blockchain, repository repositories.Repository, startingBlockNumber int64) int {
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blockNumbers := repository.MissingBlockNumbers(startingBlockNumber, repository.MaxBlockNumber())
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for _, blockNumber := range blockNumbers {
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block := blockchain.GetBlockByNumber(blockNumber)
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repository.CreateBlock(block)
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}
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return len(blockNumbers)
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}
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69
pkg/history/populate_blocks_test.go
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69
pkg/history/populate_blocks_test.go
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package history_test
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import (
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"github.com/8thlight/vulcanizedb/pkg/core"
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"github.com/8thlight/vulcanizedb/pkg/fakes"
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"github.com/8thlight/vulcanizedb/pkg/history"
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"github.com/8thlight/vulcanizedb/pkg/repositories"
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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("Populating blocks", func() {
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It("fills in the only missing block", func() {
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blocks := []core.Block{{Number: 1, Hash: "x012343"}}
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blockchain := fakes.NewBlockchainWithBlocks(blocks)
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repository := repositories.NewInMemory()
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repository.CreateBlock(core.Block{Number: 2})
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history.PopulateBlocks(blockchain, repository, 1)
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block := repository.FindBlockByNumber(1)
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Expect(block).NotTo(BeNil())
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Expect(block.Hash).To(Equal("x012343"))
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})
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It("fills in two missing blocks", func() {
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blockchain := fakes.NewBlockchainWithBlocks([]core.Block{
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{Number: 4},
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{Number: 5},
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{Number: 8},
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{Number: 10},
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{Number: 13},
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})
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repository := repositories.NewInMemory()
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repository.CreateBlock(core.Block{Number: 1})
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repository.CreateBlock(core.Block{Number: 2})
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repository.CreateBlock(core.Block{Number: 3})
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repository.CreateBlock(core.Block{Number: 6})
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repository.CreateBlock(core.Block{Number: 7})
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repository.CreateBlock(core.Block{Number: 9})
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repository.CreateBlock(core.Block{Number: 11})
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repository.CreateBlock(core.Block{Number: 12})
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history.PopulateBlocks(blockchain, repository, 5)
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Expect(repository.BlockCount()).To(Equal(11))
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Expect(repository.FindBlockByNumber(4)).To(BeNil())
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Expect(repository.FindBlockByNumber(5)).NotTo(BeNil())
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Expect(repository.FindBlockByNumber(8)).NotTo(BeNil())
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Expect(repository.FindBlockByNumber(10)).NotTo(BeNil())
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Expect(repository.FindBlockByNumber(13)).To(BeNil())
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})
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It("returns the number of blocks created", func() {
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blockchain := fakes.NewBlockchainWithBlocks([]core.Block{
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{Number: 4},
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{Number: 5},
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})
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repository := repositories.NewInMemory()
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repository.CreateBlock(core.Block{Number: 3})
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repository.CreateBlock(core.Block{Number: 6})
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numberOfBlocksCreated := history.PopulateBlocks(blockchain, repository, 3)
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Expect(numberOfBlocksCreated).To(Equal(2))
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})
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})
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@ -8,6 +8,16 @@ type InMemory struct {
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blocks map[int64]*core.Block
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}
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func (repository *InMemory) MissingBlockNumbers(startingBlockNumber int64, endingBlockNumber int64) []int64 {
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missingNumbers := []int64{}
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for blockNumber := int64(startingBlockNumber); blockNumber <= endingBlockNumber; blockNumber++ {
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if repository.blocks[blockNumber] == nil {
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missingNumbers = append(missingNumbers, blockNumber)
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}
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}
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return missingNumbers
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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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@ -25,3 +35,13 @@ func (repository *InMemory) BlockCount() int {
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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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func (repository *InMemory) MaxBlockNumber() int64 {
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highestBlockNumber := int64(-1)
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for key := range repository.blocks {
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if key > highestBlockNumber {
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highestBlockNumber = key
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}
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}
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return highestBlockNumber
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}
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@ -12,12 +12,33 @@ type Postgres struct {
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Db *sqlx.DB
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}
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func (repository Postgres) MaxBlockNumber() int64 {
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var highestBlockNumber int64
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repository.Db.Get(&highestBlockNumber, `SELECT MAX(block_number) FROM blocks`)
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return highestBlockNumber
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}
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func (repository Postgres) MissingBlockNumbers(startingBlockNumber int64, highestBlockNumber int64) []int64 {
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numbers := []int64{}
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repository.Db.Select(&numbers,
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`SELECT all_block_numbers
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FROM (
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SELECT generate_series($1::INT, $2::INT) AS all_block_numbers) series
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LEFT JOIN blocks
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ON block_number = all_block_numbers
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WHERE block_number ISNULL`,
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startingBlockNumber,
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highestBlockNumber)
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return numbers
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}
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func NewPostgres(db *sqlx.DB) Postgres {
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return Postgres{Db: db}
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}
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func (repository Postgres) FindBlockByNumber(blockNumber int64) *core.Block {
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blockRows, _ := repository.Db.Query("SELECT id, block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash FROM blocks")
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blockRows, _ := repository.Db.Query(
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`SELECT id, block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash FROM blocks`)
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var savedBlocks []core.Block
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for blockRows.Next() {
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savedBlock := repository.loadBlock(blockRows)
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@ -38,9 +59,9 @@ func (repository Postgres) BlockCount() int {
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func (repository Postgres) CreateBlock(block core.Block) {
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insertedBlock := repository.Db.QueryRow(
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"Insert INTO blocks "+
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"(block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash) "+
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"VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id",
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`INSERT INTO blocks
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(block_number, block_gaslimit, block_gasused, block_time, block_difficulty, block_hash, block_nonce, block_parenthash, block_size, uncle_hash)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING id`,
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block.Number, block.GasLimit, block.GasUsed, block.Time, block.Difficulty, block.Hash, block.Nonce, block.ParentHash, block.Size, block.UncleHash)
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var blockId int64
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insertedBlock.Scan(&blockId)
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@ -49,8 +70,10 @@ func (repository Postgres) CreateBlock(block core.Block) {
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func (repository Postgres) createTransactions(blockId int64, transactions []core.Transaction) {
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for _, transaction := range transactions {
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repository.Db.MustExec("Insert INTO transactions "+
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"(block_id, tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value) VALUES ($1, $2, $3, $4, $5, $6, $7)",
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repository.Db.MustExec(
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`INSERT INTO transactions
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(block_id, tx_hash, tx_nonce, tx_to, tx_gaslimit, tx_gasprice, tx_value)
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VALUES ($1, $2, $3, $4, $5, $6, $7)`,
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blockId, transaction.Hash, transaction.Nonce, transaction.To, transaction.GasLimit, transaction.GasPrice, transaction.Value)
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}
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}
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@ -6,4 +6,6 @@ type Repository interface {
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CreateBlock(block core.Block)
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BlockCount() int
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FindBlockByNumber(blockNumber int64) *core.Block
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MaxBlockNumber() int64
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MissingBlockNumbers(startingBlockNumber int64, endingBlockNumber int64) []int64
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}
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@ -134,6 +134,75 @@ var _ = Describe("Repositories", func() {
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Expect(savedTransaction.Value).To(Equal(value))
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})
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})
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Describe("The missing block numbers", func() {
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It("is empty the starting block number is the highest known block number", func() {
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repository.CreateBlock(core.Block{Number: 1})
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Expect(len(repository.MissingBlockNumbers(1, 1))).To(Equal(0))
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})
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It("is the only missing block number", func() {
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repository.CreateBlock(core.Block{Number: 2})
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Expect(repository.MissingBlockNumbers(1, 2)).To(Equal([]int64{1}))
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})
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It("is both missing block numbers", func() {
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repository.CreateBlock(core.Block{Number: 3})
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Expect(repository.MissingBlockNumbers(1, 3)).To(Equal([]int64{1, 2}))
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})
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|
||||
It("goes back to the starting block number", func() {
|
||||
repository.CreateBlock(core.Block{Number: 6})
|
||||
|
||||
Expect(repository.MissingBlockNumbers(4, 6)).To(Equal([]int64{4, 5}))
|
||||
})
|
||||
|
||||
It("only includes missing block numbers", func() {
|
||||
repository.CreateBlock(core.Block{Number: 4})
|
||||
repository.CreateBlock(core.Block{Number: 6})
|
||||
|
||||
Expect(repository.MissingBlockNumbers(4, 6)).To(Equal([]int64{5}))
|
||||
})
|
||||
|
||||
It("is a list with multiple gaps", func() {
|
||||
repository.CreateBlock(core.Block{Number: 4})
|
||||
repository.CreateBlock(core.Block{Number: 5})
|
||||
repository.CreateBlock(core.Block{Number: 8})
|
||||
repository.CreateBlock(core.Block{Number: 10})
|
||||
|
||||
Expect(repository.MissingBlockNumbers(3, 10)).To(Equal([]int64{3, 6, 7, 9}))
|
||||
})
|
||||
|
||||
It("returns empty array when lower bound exceeds upper bound", func() {
|
||||
Expect(repository.MissingBlockNumbers(10000, 1)).To(Equal([]int64{}))
|
||||
})
|
||||
|
||||
It("only returns requested range even when other gaps exist", func() {
|
||||
repository.CreateBlock(core.Block{Number: 3})
|
||||
repository.CreateBlock(core.Block{Number: 8})
|
||||
|
||||
Expect(repository.MissingBlockNumbers(1, 5)).To(Equal([]int64{1, 2, 4, 5}))
|
||||
})
|
||||
|
||||
})
|
||||
|
||||
Describe("The max block numbers", func() {
|
||||
It("returns the block number when a single block", func() {
|
||||
repository.CreateBlock(core.Block{Number: 1})
|
||||
|
||||
Expect(repository.MaxBlockNumber()).To(Equal(int64(1)))
|
||||
})
|
||||
|
||||
It("returns highest known block number when multiple blocks", func() {
|
||||
repository.CreateBlock(core.Block{Number: 1})
|
||||
repository.CreateBlock(core.Block{Number: 10})
|
||||
|
||||
Expect(repository.MaxBlockNumber()).To(Equal(int64(10)))
|
||||
})
|
||||
})
|
||||
}
|
||||
|
||||
Describe("In memory repository", func() {
|
||||
|
Loading…
Reference in New Issue
Block a user