115 lines
3.8 KiB
Go
115 lines
3.8 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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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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// headerSyncCmd represents the headerSync command
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var headerSyncCmd = &cobra.Command{
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Use: "headerSync",
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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 headerSync --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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SubCommand = cmd.CalledAs()
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LogWithCommand = *log.WithField("SubCommand", SubCommand)
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headerSync()
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},
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}
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func init() {
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rootCmd.AddCommand(headerSyncCmd)
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headerSyncCmd.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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// TODO Lots of possible errors in the call stack above. If errors occur, we still put
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// 0 in the channel, triggering another round
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LogWithCommand.Error("backfillAllHeaders: Error populating headers: ", err)
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}
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missingBlocksPopulated <- populated
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}
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func headerSync() {
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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, err := validator.ValidateHeaders()
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if err != nil {
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LogWithCommand.Error("headerSync: ValidateHeaders failed: ", err)
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}
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LogWithCommand.Debug(window.GetString())
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case n := <-missingBlocksPopulated:
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if n == 0 {
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time.Sleep(3 * time.Second)
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}
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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, err := blockChain.LastBlock()
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if err != nil {
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LogWithCommand.Error("validateArgs: Error getting last block: ", err)
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}
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if lastBlock.Int64() == 0 {
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LogWithCommand.Fatal("geth initial: state sync not finished")
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}
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if startingBlockNumber > lastBlock.Int64() {
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LogWithCommand.Fatal("starting block number > current block number")
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}
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}
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