7ee253b2a3
- starting with the totalSupply function - sets contract config on transformer by passing it into the transformer initializer - handles block records with the same number for different nodes for both creating token_supply records, and finding missing blocks
71 lines
1.9 KiB
Go
71 lines
1.9 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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"github.com/spf13/cobra"
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"github.com/vulcanize/vulcanizedb/examples/erc20_watcher/every_block"
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"github.com/vulcanize/vulcanizedb/libraries/shared"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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"github.com/vulcanize/vulcanizedb/pkg/geth"
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"log"
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"time"
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)
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// erc20Cmd represents the erc20 command
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var erc20Cmd = &cobra.Command{
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Use: "erc20",
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Short: "Fetches and persists token supply",
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Long: `Fetches the totalSupply for the configured token from each block and persists it in Vulcanize DB.
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vulcanizedb erc20 --config environments/public
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Expects an ethereum node to be running and requires a .toml config file:
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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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watchERC20s()
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},
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}
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func watchERC20s() {
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ticker := time.NewTicker(5 * time.Second)
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defer ticker.Stop()
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blockchain := geth.NewBlockchain(ipc)
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db, err := postgres.NewDB(databaseConfig, blockchain.Node())
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if err != nil {
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log.Fatal("Failed to initialize database.")
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}
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watcher := shared.Watcher{
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DB: *db,
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Blockchain: blockchain,
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}
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watcher.AddTransformers(every_block.TransformerInitializers())
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for range ticker.C {
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watcher.Execute()
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}
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}
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func init() {
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rootCmd.AddCommand(erc20Cmd)
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}
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