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Move hardware emit to separate component.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package internal | ||
|
|
||
| import ( | ||
| "context" | ||
| "github.com/shirou/gopsutil/cpu" | ||
| "github.com/uber-go/tally" | ||
| "go.uber.org/cadence/internal/common/metrics" | ||
| "go.uber.org/zap" | ||
| "runtime" | ||
| "sync" | ||
| "time" | ||
| ) | ||
|
|
||
| type ( | ||
| workerUsageCollector struct { | ||
| cooldownTime time.Duration | ||
| logger *zap.Logger | ||
| ctx context.Context | ||
| wg *sync.WaitGroup // graceful stop | ||
| cancel context.CancelFunc | ||
| metricsScope tally.Scope | ||
| host string | ||
| } | ||
|
|
||
| workerUsageCollectorOptions struct { | ||
| Enabled bool | ||
| Cooldown time.Duration | ||
| Host string | ||
| MetricsScope tally.Scope | ||
| } | ||
|
|
||
| hardwareUsage struct { | ||
| NumCPUCores int | ||
| CPUPercent float64 | ||
| NumGoRoutines int | ||
| TotalMemory float64 | ||
| MemoryUsedHeap float64 | ||
| MemoryUsedStack float64 | ||
| } | ||
| ) | ||
|
|
||
| func newWorkerUsageCollector( | ||
| options workerUsageCollectorOptions, | ||
| logger *zap.Logger, | ||
| ) *workerUsageCollector { | ||
| if !options.Enabled { | ||
| return nil | ||
| } | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| return &workerUsageCollector{ | ||
| cooldownTime: options.Cooldown, | ||
| host: options.Host, | ||
| metricsScope: options.MetricsScope, | ||
| logger: logger, | ||
| ctx: ctx, | ||
| cancel: cancel, | ||
| wg: &sync.WaitGroup{}, | ||
| } | ||
| } | ||
|
|
||
| func (w *workerUsageCollector) Start() { | ||
| w.wg.Add(1) | ||
| go func() { | ||
| defer func() { | ||
| if p := recover(); p != nil { | ||
| w.logger.Error("Unhandled panic in workerUsageCollector.") | ||
| } | ||
| }() | ||
| defer w.wg.Done() | ||
| collectHardwareUsageOnce.Do( | ||
| func() { | ||
| ticker := time.NewTicker(w.cooldownTime) | ||
| for { | ||
| select { | ||
| case <-w.ctx.Done(): | ||
| return | ||
| case <-ticker.C: | ||
| hardwareUsageData := w.collectHardwareUsage() | ||
| w.emitHardwareUsage(hardwareUsageData) | ||
|
|
||
| } | ||
| } | ||
| }) | ||
| }() | ||
| return | ||
| } | ||
|
|
||
| func (w *workerUsageCollector) Stop() { | ||
| w.cancel() | ||
| w.wg.Wait() | ||
| } | ||
|
|
||
| func (w *workerUsageCollector) collectHardwareUsage() hardwareUsage { | ||
| cpuPercent, err := cpu.Percent(0, false) | ||
| if err != nil { | ||
| w.logger.Warn("Failed to get cpu percent", zap.Error(err)) | ||
| } | ||
| cpuCores, err := cpu.Counts(false) | ||
| if err != nil { | ||
| w.logger.Warn("Failed to get number of cpu cores", zap.Error(err)) | ||
| } | ||
|
|
||
| var memStats runtime.MemStats | ||
| runtime.ReadMemStats(&memStats) | ||
| return hardwareUsage{ | ||
| NumCPUCores: cpuCores, | ||
| CPUPercent: cpuPercent[0], | ||
| NumGoRoutines: runtime.NumGoroutine(), | ||
| TotalMemory: float64(memStats.Sys), | ||
| MemoryUsedHeap: float64(memStats.HeapAlloc), | ||
| MemoryUsedStack: float64(memStats.StackInuse), | ||
| } | ||
| } | ||
|
|
||
| // emitHardwareUsage emits collected hardware usage metrics to metrics scope | ||
| func (w *workerUsageCollector) emitHardwareUsage(usage hardwareUsage) { | ||
| scope := w.metricsScope.Tagged(map[string]string{clientHostTag: w.host}) | ||
| scope.Gauge(metrics.NumCPUCores).Update(float64(usage.NumCPUCores)) | ||
| scope.Gauge(metrics.CPUPercentage).Update(usage.CPUPercent) | ||
| scope.Gauge(metrics.NumGoRoutines).Update(float64(usage.NumGoRoutines)) | ||
| scope.Gauge(metrics.TotalMemory).Update(float64(usage.TotalMemory)) | ||
| scope.Gauge(metrics.MemoryUsedHeap).Update(float64(usage.MemoryUsedHeap)) | ||
| scope.Gauge(metrics.MemoryUsedStack).Update(float64(usage.MemoryUsedStack)) | ||
| } |