/
monitoring.go
86 lines (76 loc) · 2.63 KB
/
monitoring.go
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// Copyright 2021 dfuse Platform Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package geth
import (
"fmt"
"time"
"github.com/streamingfast/bstream"
"github.com/tidwall/gjson"
"go.uber.org/zap"
)
// Monitor periodically checks the head block num and block time, as well as the enode string (server ID)
func (s *Superviser) Monitor() {
started := time.Now()
for {
time.Sleep(2 * time.Second)
if !s.IsRunning() {
continue
}
resp, err := s.sendGethCommand(`{"jsonrpc":"2.0","method":"admin_nodeInfo","params":[],"id":1}`)
if err != nil {
s.Logger.Warn("geth Monitor cannot get info from IPC socket", zap.Error(err))
if time.Since(started) < time.Minute {
continue
}
} else {
s.setEnodeStr(gjson.Get(resp, "result.enode").String())
}
resp, err = s.sendGethCommand(`{"jsonrpc":"2.0","method":"admin_peers","params":[],"id":1}`)
if err != nil {
s.Logger.Warn("geth Monitor cannot get peers from IPC socket", zap.Error(err))
} else {
connectedPeers := []string{}
for _, peer := range gjson.Get(resp, "result").Array() {
connectedPeers = append(connectedPeers, peer.Get("enode").String())
}
s.infoMutex.Lock()
s.connectedPeers = connectedPeers
s.infoMutex.Unlock()
}
if s.headBlockUpdateFunc != nil {
resp, err = s.sendGethCommand(`{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}`)
if err != nil {
s.Logger.Warn("geth Monitor cannot get blocknumber from IPC socket", zap.Error(err))
continue
}
lastBlock := gjson.Get(resp, "result")
lastBlockNum := hex2uint(lastBlock.String())
if lastBlockNum == 0 {
continue
}
resp, err = s.sendGethCommand(fmt.Sprintf(`{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["%s", true],"id":1}`, lastBlock))
if err != nil {
s.Logger.Warn("geth Monitor cannot get block by number", zap.Error(err))
continue
}
timestamp := time.Unix(hex2int(gjson.Get(resp, "result.timestamp").String()), 0)
hash := hex2string(gjson.Get(resp, "result.hash").String())
s.headBlockUpdateFunc(&bstream.Block{
Id: hash,
Number: uint64(lastBlockNum),
Timestamp: timestamp,
})
}
}
}