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monitoring.go
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monitoring.go
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// Copyright 2019 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 nodeos
import (
"context"
"time"
"github.com/zhongshuwen/node-manager/metrics"
"go.uber.org/zap"
)
// Monitor manages the 'readinessProbe' bool for healthz purposes and
// the stateos drift/headblock.
//
// This should be performed through a go routine.
func (s *NodeosSuperviser) Monitor() {
var lastHeadBlockTime time.Time
var lastDbSizeTime time.Time
getInfoFailureCount := 0
for {
time.Sleep(5 * time.Second)
if !s.IsRunning() {
getInfoFailureCount = 0
continue
}
chainInfo, err := s.api.GetInfo(context.Background())
if err != nil {
zlog.Warn("got err on get into", zap.Error(err))
getInfoFailureCount++
continue
}
zlog.Debug("Got chain info", zap.Duration("delta", time.Since(lastHeadBlockTime)))
getInfoFailureCount = 0
s.chainID = chainInfo.ChainID
s.serverVersion = chainInfo.ServerVersion
s.serverVersionString = chainInfo.ServerVersionString
s.lastBlockSeen = uint32(chainInfo.HeadBlockNum)
lastHeadBlockTime = chainInfo.HeadBlockTime.Time
if s.headBlockUpdateFunc != nil {
s.headBlockUpdateFunc(uint64(chainInfo.HeadBlockNum), chainInfo.HeadBlockID.String(), chainInfo.HeadBlockTime.Time)
}
// monitor if BP is producer (should be 1 and only 1)
if s.IsActiveProducer() {
isProducerPaused, err := s.api.IsProducerPaused(context.Background())
if err != nil {
s.Logger.Debug("unable to check if producer is paused", zap.Error(err))
} else {
metrics.SetNodeosIsBlockProducer(isProducerPaused)
}
}
if lastDbSizeTime.IsZero() || time.Now().Sub(lastDbSizeTime).Seconds() > 30.0 {
s.Logger.Debug("first monitoring call or more than 30s has elapsed since last call, querying db size from nodeos")
dbSize, err := s.api.GetDBSize(context.Background())
if err != nil {
s.Logger.Info("unable to get db size", zap.Error(err))
continue
}
lastDbSizeTime = time.Now()
metrics.NodeosDBSizeInfo.SetFloat64(float64(dbSize.FreeBytes), "FreeBytes")
metrics.NodeosDBSizeInfo.SetFloat64(float64(dbSize.UsedBytes), "UsedBytes")
metrics.NodeosDBSizeInfo.SetFloat64(float64(dbSize.Size), "Size")
}
}
}