Golang FilterRunner.LogError方法代碼示例

// On Heka restarts this function reloads all previously running SandboxFilters
// using the script, configuration, and preservation files in the working
// directory.
func (this *SandboxManagerFilter) restoreSandboxes(fr pipeline.FilterRunner, h pipeline.PluginHelper, dir string) {
	glob := fmt.Sprintf("%s-*.toml", getNormalizedName(fr.Name()))
	if matches, err := filepath.Glob(filepath.Join(dir, glob)); err == nil {
		for _, fn := range matches {
			var configFile pipeline.ConfigFile
			if _, err = toml.DecodeFile(fn, &configFile); err != nil {
				fr.LogError(fmt.Errorf("restoreSandboxes failed: %s\n", err))
				continue
			} else {
				for _, conf := range configFile {
					var runner pipeline.FilterRunner
					name := path.Base(fn[:len(fn)-5])
					fr.LogMessage(fmt.Sprintf("Loading: %s", name))
					runner, err = this.createRunner(dir, name, conf)
					if err != nil {
						fr.LogError(fmt.Errorf("createRunner failed: %s\n", err.Error()))
						removeAll(dir, fmt.Sprintf("%s.*", name))
						break
					}
					err = h.PipelineConfig().AddFilterRunner(runner)
					if err != nil {
						fr.LogError(err)
					} else {
						atomic.AddInt32(&this.currentFilters, 1)
					}
					break // only interested in the first item
				}
			}
		}
	}
}

func (this *SandboxManagerFilter) Run(fr pipeline.FilterRunner,
	h pipeline.PluginHelper) (err error) {

	inChan := fr.InChan()

	var ok = true
	var pack *pipeline.PipelinePack
	var delta int64

	this.restoreSandboxes(fr, h, this.workingDirectory)
	for ok {
		select {
		case pack, ok = <-inChan:
			if !ok {
				break
			}
			atomic.AddInt64(&this.processMessageCount, 1)
			delta = time.Now().UnixNano() - pack.Message.GetTimestamp()
			if math.Abs(float64(delta)) >= 5e9 {
				fr.LogError(fmt.Errorf("Discarded control message: %d seconds skew",
					delta/1e9))
				pack.Recycle()
				break
			}
			action, _ := pack.Message.GetFieldValue("action")
			switch action {
			case "load":
				current := int(atomic.LoadInt32(&this.currentFilters))
				if current < this.maxFilters {
					err := this.loadSandbox(fr, h, this.workingDirectory, pack.Message)
					if err != nil {
						fr.LogError(err)
					}
				} else {
					fr.LogError(fmt.Errorf("%s attempted to load more than %d filters",
						fr.Name(), this.maxFilters))
				}
			case "unload":
				fv, _ := pack.Message.GetFieldValue("name")
				if name, ok := fv.(string); ok {
					name = getSandboxName(fr.Name(), name)
					if this.pConfig.RemoveFilterRunner(name) {
						removeAll(this.workingDirectory, fmt.Sprintf("%s.*", name))
					}
				}
			}
			pack.Recycle()
		}
	}
	return
}

//.........這裏部分代碼省略.........
				startTime = time.Now()
				sample = true
			}
			retval = this.sb.ProcessMessage(pack)
			if sample {
				duration = time.Since(startTime).Nanoseconds()
				this.reportLock.Lock()
				this.processMessageDuration += duration
				this.processMessageSamples++
				if this.sbc.Profile {
					this.profileMessageDuration = this.processMessageDuration
					this.profileMessageSamples = this.processMessageSamples
					if this.profileMessageSamples == int64(capacity)*10 {
						this.sbc.Profile = false
						// reset the normal sampling so it isn't heavily skewed by the profile values
						// i.e. process messages fast during profiling and then switch to malicious code
						this.processMessageDuration = this.profileMessageDuration / this.profileMessageSamples
						this.processMessageSamples = 1
					}
				}
				this.reportLock.Unlock()
			}
			if retval <= 0 {
				if backpressure && this.processMessageSamples >= int64(capacity) {
					if this.processMessageDuration/this.processMessageSamples > slowDuration ||
						fr.MatchRunner().GetAvgDuration() > slowDuration/5 {
						terminated = true
						blocking = true
					}
				}
				if retval < 0 {
					atomic.AddInt64(&this.processMessageFailures, 1)
					em := this.sb.LastError()
					if len(em) > 0 {
						fr.LogError(errors.New(em))
					}
				}
				sample = 0 == rand.Intn(this.sampleDenominator)
			} else {
				terminated = true
			}
			pack.Recycle()

		case t := <-ticker:
			injectionCount = this.pConfig.Globals.MaxMsgTimerInject
			startTime = time.Now()
			if retval = this.sb.TimerEvent(t.UnixNano()); retval != 0 {
				terminated = true
			}
			duration = time.Since(startTime).Nanoseconds()
			this.reportLock.Lock()
			this.timerEventDuration += duration
			this.timerEventSamples++
			this.reportLock.Unlock()
		}

		if terminated {
			pack := h.PipelinePack(0)
			pack.Message.SetType("heka.sandbox-terminated")
			pack.Message.SetLogger(pipeline.HEKA_DAEMON)
			message.NewStringField(pack.Message, "plugin", fr.Name())
			if blocking {
				pack.Message.SetPayload("sandbox is running slowly and blocking the router")
				// no lock on the ProcessMessage variables here because there are no active writers
				message.NewInt64Field(pack.Message, "ProcessMessageCount", this.processMessageCount, "count")
				message.NewInt64Field(pack.Message, "ProcessMessageFailures", this.processMessageFailures, "count")
				message.NewInt64Field(pack.Message, "ProcessMessageSamples", this.processMessageSamples, "count")
				message.NewInt64Field(pack.Message, "ProcessMessageAvgDuration",
					this.processMessageDuration/this.processMessageSamples, "ns")
				message.NewInt64Field(pack.Message, "MatchAvgDuration", fr.MatchRunner().GetAvgDuration(), "ns")
				message.NewIntField(pack.Message, "FilterChanLength", len(inChan), "count")
				message.NewIntField(pack.Message, "MatchChanLength", fr.MatchRunner().InChanLen(), "count")
				message.NewIntField(pack.Message, "RouterChanLength", len(h.PipelineConfig().Router().InChan()), "count")
			} else {
				pack.Message.SetPayload(this.sb.LastError())
			}
			fr.Inject(pack)
			break
		}
	}

	if this.manager != nil {
		this.manager.PluginExited()
	}

	this.reportLock.Lock()
	var destroyErr error
	if this.sbc.PreserveData {
		destroyErr = this.sb.Destroy(this.preservationFile)
	} else {
		destroyErr = this.sb.Destroy("")
	}
	if destroyErr != nil {
		err = destroyErr
	}

	this.sb = nil
	this.reportLock.Unlock()
	return
}