144 lines
4.5 KiB
Go
144 lines
4.5 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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"bufio"
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"fmt"
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"log"
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"os"
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"strings"
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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/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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"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/omni/transformer"
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"github.com/vulcanize/vulcanizedb/pkg/omni/types"
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)
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// omniWatcherCmd represents the omniWatcher command
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var omniWatcherCmd = &cobra.Command{
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Use: "omniWatcher",
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Short: "Watches events at the provided contract address",
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Long: `Uses input contract address and event filters to watch events
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Expects an ethereum node to be running
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Expects an archival node synced into vulcanizeDB
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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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omniWatcher()
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},
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}
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func omniWatcher() {
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ticker := time.NewTicker(5 * time.Second)
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defer ticker.Stop()
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if contractAddress == "" && len(contractAddresses) == 0 {
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log.Fatal("Contract address required")
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}
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if len(contractEvents) == 0 || len(contractMethods) == 0 {
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var str string
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for str != "y" {
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reader := bufio.NewReader(os.Stdin)
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if len(contractEvents) == 0 && len(contractMethods) == 0 {
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fmt.Print("Warning: no events or methods specified, proceed to watch every event and method? (Y/n)\n> ")
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} else if len(contractEvents) == 0 {
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fmt.Print("Warning: no events specified, proceed to watch every event? (Y/n)\n> ")
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} else {
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fmt.Print("Warning: no methods specified, proceed to watch every method? (Y/n)\n> ")
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}
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resp, err := reader.ReadBytes('\n')
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if err != nil {
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log.Fatal(err)
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}
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str = strings.ToLower(string(resp))
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if str == "n" {
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return
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}
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}
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}
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rawRpcClient, err := rpc.Dial(ipc)
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if err != nil {
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log.Fatal(fmt.Sprintf("Failed to initialize rpc client\r\nerr: %v\r\n", 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(ethClient)
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blockChain := geth.NewBlockChain(client, node, transactionConverter)
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db, err := postgres.NewDB(databaseConfig, blockChain.Node())
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if err != nil {
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log.Fatal(fmt.Sprintf("Failed to initialize database\r\nerr: %v\r\n", err))
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}
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con := types.Config{
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DB: db,
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BC: blockChain,
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Network: network,
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}
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t := transformer.NewTransformer(&con)
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contractAddresses = append(contractAddresses, contractAddress)
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for _, addr := range contractAddresses {
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t.Set(addr, contractEvents)
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}
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err = t.Init()
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if err != nil {
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log.Fatal(fmt.Sprintf("Failed to initialized transformer\r\nerr: %v\r\n", err))
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}
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w := shared.Watcher{}
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w.AddTransformer(t)
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for range ticker.C {
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w.Execute()
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}
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}
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func init() {
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rootCmd.AddCommand(omniWatcherCmd)
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omniWatcherCmd.Flags().StringVarP(&contractAddress, "contract-address", "a", "", "Single address to generate watchers for")
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omniWatcherCmd.Flags().StringArrayVarP(&contractAddresses, "contract-addresses", "l", []string{}, "List of addresses to generate watchers for")
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omniWatcherCmd.Flags().StringArrayVarP(&contractEvents, "contract-events", "e", []string{}, "Subset of events to watch; by default all events are watched")
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omniWatcherCmd.Flags().StringArrayVarP(&contractEvents, "contract-methods", "m", []string{}, "Subset of methods to watch; by default all methods are watched")
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omniWatcherCmd.Flags().StringVarP(&network, "network", "n", "", `Network the contract is deployed on; options: "ropsten", "kovan", and "rinkeby"; default is mainnet"`)
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}
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