101 lines
3.1 KiB
Go
101 lines
3.1 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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"os"
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"time"
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log "github.com/sirupsen/logrus"
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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/history"
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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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populated, err := history.PopulateMissingHeaders(blockchain, headerRepository, startingBlockNumber)
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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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blockChain := getBlockChain()
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validateArgs(blockChain)
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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)
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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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func validateArgs(blockChain *geth.BlockChain) {
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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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}
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