72a849a272
- currently not validating price feeds if the underlying header already exists and is valid, since price feeds should have been added when initial header was added
114 lines
3.7 KiB
Go
114 lines
3.7 KiB
Go
// Copyright © 2018 Vulcanize
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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"log"
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"os"
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"time"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/spf13/cobra"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres/repositories"
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"github.com/vulcanize/vulcanizedb/pkg/geth"
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"github.com/vulcanize/vulcanizedb/pkg/geth/client"
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vRpc "github.com/vulcanize/vulcanizedb/pkg/geth/converters/rpc"
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"github.com/vulcanize/vulcanizedb/pkg/geth/node"
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"github.com/vulcanize/vulcanizedb/pkg/history"
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"github.com/vulcanize/vulcanizedb/pkg/transformers"
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"github.com/vulcanize/vulcanizedb/utils"
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)
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// lightSyncCmd represents the lightSync command
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var lightSyncCmd = &cobra.Command{
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Use: "lightSync",
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Short: "Syncs VulcanizeDB with local ethereum node's block headers",
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Long: `Syncs VulcanizeDB with local ethereum node. Populates
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Postgres with block headers.
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./vulcanizedb lightSync --starting-block-number 0 --config public.toml
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Expects ethereum node to be running and requires a .toml config:
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[database]
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name = "vulcanize_public"
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hostname = "localhost"
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port = 5432
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[client]
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ipcPath = "/Users/user/Library/Ethereum/geth.ipc"
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`,
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Run: func(cmd *cobra.Command, args []string) {
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lightSync()
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},
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}
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func init() {
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rootCmd.AddCommand(lightSyncCmd)
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lightSyncCmd.Flags().Int64VarP(&startingBlockNumber, "starting-block-number", "s", 0, "Block number to start syncing from")
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}
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func backFillAllHeaders(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, missingBlocksPopulated chan int, startingBlockNumber int64) {
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emptyTransformers := []transformers.Transformer{}
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populated, err := history.PopulateMissingHeaders(blockchain, headerRepository, startingBlockNumber, emptyTransformers)
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if err != nil {
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log.Fatal("Error populating headers: ", err)
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}
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missingBlocksPopulated <- populated
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}
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func lightSync() {
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ticker := time.NewTicker(pollingInterval)
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defer ticker.Stop()
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rawRpcClient, err := rpc.Dial(ipc)
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if err != nil {
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log.Fatal(err)
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}
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rpcClient := client.NewRpcClient(rawRpcClient, ipc)
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ethClient := ethclient.NewClient(rawRpcClient)
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client := client.NewEthClient(ethClient)
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node := node.MakeNode(rpcClient)
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transactionConverter := vRpc.NewRpcTransactionConverter(client)
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blockChain := geth.NewBlockChain(client, node, transactionConverter)
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lastBlock := blockChain.LastBlock().Int64()
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if lastBlock == 0 {
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log.Fatal("geth initial: state sync not finished")
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}
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if startingBlockNumber > lastBlock {
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log.Fatal("starting block number > current block number")
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}
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db := utils.LoadPostgres(databaseConfig, blockChain.Node())
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headerRepository := repositories.NewHeaderRepository(&db)
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validator := history.NewHeaderValidator(blockChain, headerRepository, validationWindow, []transformers.Transformer{})
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missingBlocksPopulated := make(chan int)
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go backFillAllHeaders(blockChain, headerRepository, missingBlocksPopulated, startingBlockNumber)
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for {
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select {
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case <-ticker.C:
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window := validator.ValidateHeaders()
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window.Log(os.Stdout)
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case <-missingBlocksPopulated:
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go backFillAllHeaders(blockChain, headerRepository, missingBlocksPopulated, startingBlockNumber)
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}
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}
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}
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