ipld-eth-server/cmd/streamSubscribe.go
2019-12-02 13:24:51 -06:00

227 lines
7.5 KiB
Go

// Copyright © 2019 Vulcanize, Inc
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"bytes"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/vulcanize/vulcanizedb/libraries/shared/streamer"
"github.com/vulcanize/vulcanizedb/pkg/config"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/geth/client"
"github.com/vulcanize/vulcanizedb/pkg/ipfs"
)
// streamSubscribeCmd represents the streamSubscribe command
var streamSubscribeCmd = &cobra.Command{
Use: "streamSubscribe",
Short: "This command is used to subscribe to the seed node stream with the provided filters",
Long: ``,
Run: func(cmd *cobra.Command, args []string) {
streamSubscribe()
},
}
func init() {
rootCmd.AddCommand(streamSubscribeCmd)
}
func streamSubscribe() {
log.SetLevel(log.DebugLevel)
// Prep the subscription config/filters to be sent to the server
subscriptionConfig()
// Create a new rpc client and a subscription streamer with that client
rpcClient := getRpcClient()
str := streamer.NewSeedStreamer(rpcClient)
// Buffered channel for reading subscription payloads
payloadChan := make(chan ipfs.ResponsePayload, 20000)
// Subscribe to the seed node service with the given config/filter parameters
sub, err := str.Stream(payloadChan, subConfig)
if err != nil {
log.Fatal(err)
}
log.Info("awaiting payloads")
// Receive response payloads and print out the results
for {
select {
case payload := <-payloadChan:
if payload.ErrMsg != "" {
log.Error(payload.ErrMsg)
continue
}
for _, headerRlp := range payload.HeadersRlp {
var header types.Header
err = rlp.Decode(bytes.NewBuffer(headerRlp), &header)
if err != nil {
log.Error(err)
continue
}
fmt.Printf("Header number %d, hash %s\n", header.Number.Int64(), header.Hash().Hex())
fmt.Printf("header: %v\n", header)
}
for _, trxRlp := range payload.TransactionsRlp {
var trx types.Transaction
buff := bytes.NewBuffer(trxRlp)
stream := rlp.NewStream(buff, 0)
err := trx.DecodeRLP(stream)
if err != nil {
log.Error(err)
continue
}
fmt.Printf("Transaction with hash %s\n", trx.Hash().Hex())
fmt.Printf("trx: %v\n", trx)
}
for _, rctRlp := range payload.ReceiptsRlp {
var rct types.ReceiptForStorage
buff := bytes.NewBuffer(rctRlp)
stream := rlp.NewStream(buff, 0)
err = rct.DecodeRLP(stream)
if err != nil {
log.Error(err)
continue
}
fmt.Printf("Receipt with block hash %s, trx hash %s\n", rct.BlockHash.Hex(), rct.TxHash.Hex())
fmt.Printf("rct: %v\n", rct)
for _, l := range rct.Logs {
if len(l.Topics) < 1 {
log.Error(fmt.Sprintf("log only has %d topics", len(l.Topics)))
continue
}
fmt.Printf("Log for block hash %s, trx hash %s, address %s, and with topic0 %s\n",
l.BlockHash.Hex(), l.TxHash.Hex(), l.Address.Hex(), l.Topics[0].Hex())
fmt.Printf("log: %v\n", l)
}
}
// This assumes leafs only
for key, stateRlp := range payload.StateNodesRlp {
var acct state.Account
err = rlp.Decode(bytes.NewBuffer(stateRlp), &acct)
if err != nil {
log.Error(err)
continue
}
fmt.Printf("Account for key %s, and root %s, with balance %d\n",
key.Hex(), acct.Root.Hex(), acct.Balance.Int64())
fmt.Printf("state account: %v\n", acct)
}
for stateKey, mappedRlp := range payload.StorageNodesRlp {
fmt.Printf("Storage for state key %s ", stateKey.Hex())
for storageKey, storageRlp := range mappedRlp {
fmt.Printf("with storage key %s\n", storageKey.Hex())
var i []interface{}
err := rlp.DecodeBytes(storageRlp, i)
if err != nil {
log.Error(err)
continue
}
// if a leaf node
if len(i) == 2 {
keyBytes, ok := i[0].([]byte)
if !ok {
continue
}
valueBytes, ok := i[0].([]byte)
if !ok {
continue
}
fmt.Printf("Storage leaf key: %s, and value hash: %s\n",
common.BytesToHash(keyBytes).Hex(), common.BytesToHash(valueBytes).Hex())
}
}
}
case err = <-sub.Err():
log.Fatal(err)
}
}
}
func subscriptionConfig() {
log.Info("loading subscription config")
subConfig = config.Subscription{
// Below default to false, which means we do not backfill by default
BackFill: viper.GetBool("subscription.backfill"),
BackFillOnly: viper.GetBool("subscription.backfillOnly"),
// Below default to 0
// 0 start means we start at the beginning and 0 end means we continue indefinitely
StartingBlock: viper.GetInt64("subscription.startingBlock"),
EndingBlock: viper.GetInt64("subscription.endingBlock"),
// Below default to false, which means we get all headers by default
HeaderFilter: config.HeaderFilter{
Off: viper.GetBool("subscription.headerFilter.off"),
FinalOnly: viper.GetBool("subscription.headerFilter.finalOnly"),
},
// Below defaults to false and two slices of length 0
// Which means we get all transactions by default
TrxFilter: config.TrxFilter{
Off: viper.GetBool("subscription.trxFilter.off"),
Src: viper.GetStringSlice("subscription.trxFilter.src"),
Dst: viper.GetStringSlice("subscription.trxFilter.dst"),
},
// Below defaults to false and one slice of length 0
// Which means we get all receipts by default
ReceiptFilter: config.ReceiptFilter{
Off: viper.GetBool("subscription.receiptFilter.off"),
Topic0s: viper.GetStringSlice("subscription.receiptFilter.topic0s"),
},
// Below defaults to two false, and a slice of length 0
// Which means we get all state leafs by default, but no intermediate nodes
StateFilter: config.StateFilter{
Off: viper.GetBool("subscription.stateFilter.off"),
IntermediateNodes: viper.GetBool("subscription.stateFilter.intermediateNodes"),
Addresses: viper.GetStringSlice("subscription.stateFilter.addresses"),
},
// Below defaults to two false, and two slices of length 0
// Which means we get all storage leafs by default, but no intermediate nodes
StorageFilter: config.StorageFilter{
Off: viper.GetBool("subscription.storageFilter.off"),
IntermediateNodes: viper.GetBool("subscription.storageFilter.intermediateNodes"),
Addresses: viper.GetStringSlice("subscription.storageFilter.addresses"),
StorageKeys: viper.GetStringSlice("subscription.storageFilter.storageKeys"),
},
}
}
func getRpcClient() core.RpcClient {
vulcPath := viper.GetString("subscription.path")
if vulcPath == "" {
vulcPath = "ws://127.0.0.1:2019" // default to and try the default ws url if no path is provided
}
rawRpcClient, err := rpc.Dial(vulcPath)
if err != nil {
log.Fatal(err)
}
return client.NewRpcClient(rawRpcClient, vulcPath)
}