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
111 lines
4.0 KiB
Go
111 lines
4.0 KiB
Go
// 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/price_feeds/pep"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/price_feeds/pip"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/price_feeds/rep"
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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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missingBlocksPopulated := make(chan int)
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transformers := []transformers.Transformer{
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pep.NewPepTransformer(blockChain, &db),
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pip.NewPipTransformer(blockChain, &db),
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rep.NewRepTransformer(blockChain, &db),
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}
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validator := history.NewHeaderValidator(blockChain, headerRepository, validationWindow, transformers)
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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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