107 lines
3.8 KiB
Go
107 lines
3.8 KiB
Go
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// Copyright © 2018 NAME HERE <EMAIL ADDRESS>
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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/pkg/transformers/pep"
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"github.com/vulcanize/vulcanizedb/utils"
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)
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// syncPriceFeedsCmd represents the syncPriceFeeds command
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var syncPriceFeedsCmd = &cobra.Command{
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Use: "syncPriceFeeds",
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Short: "Sync block headers with price feed data",
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Long: `Sync Ethereum block headers and price feed data. For example:
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./vulcanizedb syncPriceFeeds --config <config.toml> --starting-block-number <block-number>
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Price feed data will be updated when price feed contracts log value events.`,
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Run: func(cmd *cobra.Command, args []string) {
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syncPriceFeeds()
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},
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}
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func init() {
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rootCmd.AddCommand(syncPriceFeedsCmd)
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syncPriceFeedsCmd.Flags().Int64VarP(&startingBlockNumber, "starting-block-number", "s", 0, "block number at which to start tracking price feeds")
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}
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func backFillPriceFeeds(blockchain core.BlockChain, headerRepository datastore.HeaderRepository, missingBlocksPopulated chan int, startingBlockNumber int64, transformers []transformers.Transformer) {
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populated, err := history.PopulateMissingHeaders(blockchain, headerRepository, startingBlockNumber, transformers)
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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 syncPriceFeeds() {
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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)
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missingBlocksPopulated := make(chan int)
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transformers := []transformers.Transformer{
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pep.NewPepTransformer(blockChain, &db),
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}
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go backFillPriceFeeds(blockChain, headerRepository, missingBlocksPopulated, startingBlockNumber, transformers)
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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 backFillPriceFeeds(blockChain, headerRepository, missingBlocksPopulated, startingBlockNumber, transformers)
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}
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}
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}
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