Feat/continue profiling (#4867)

Co-authored-by: aiden.ma <[email protected]>
Co-authored-by: aiden.ma <[email protected]>

Author: 3 people

core/service/serviceconf.go

@@ -8,6 +8,7 @@ import (
 	"github.com/zeromicro/go-zero/core/stat"
 	"github.com/zeromicro/go-zero/core/trace"
 	"github.com/zeromicro/go-zero/internal/devserver"
+	"github.com/zeromicro/go-zero/internal/profiling"
 )
 
 const (
@@ -38,6 +39,8 @@ type (
 		Telemetry  trace.Config      `json:",optional"`
 		DevServer  DevServerConfig   `json:",optional"`
 		Shutdown   proc.ShutdownConf `json:",optional"`
+		// Profiling is the configuration for profiling.
+		Profiling profiling.Config `json:",optional"`
 	}
 )
 
@@ -72,6 +75,8 @@ func (sc ServiceConf) SetUp() error {
 	}
 	devserver.StartAgent(sc.DevServer)
 
+	profiling.Start(sc.Profiling)
+
 	return nil
 }
 

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/golang/protobuf v1.5.4
 	github.com/google/uuid v1.6.0
+	github.com/grafana/pyroscope-go v1.2.2
 	github.com/jackc/pgx/v5 v5.7.4
 	github.com/jhump/protoreflect v1.17.0
 	github.com/pelletier/go-toml/v2 v2.2.2
@@ -71,6 +72,7 @@ require (
 	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/grafana/pyroscope-go/godeltaprof v0.1.8 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
 	github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect

go.sum

@@ -80,6 +80,10 @@ github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 h1:K6RDEckDVWvDI9JAJY
 github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/grafana/pyroscope-go v1.2.2 h1:uvKCyZMD724RkaCEMrSTC38Yn7AnFe8S2wiAIYdDPCE=
+github.com/grafana/pyroscope-go v1.2.2/go.mod h1:zzT9QXQAp2Iz2ZdS216UiV8y9uXJYQiGE1q8v1FyhqU=
+github.com/grafana/pyroscope-go/godeltaprof v0.1.8 h1:iwOtYXeeVSAeYefJNaxDytgjKtUuKQbJqgAIjlnicKg=
+github.com/grafana/pyroscope-go/godeltaprof v0.1.8/go.mod h1:2+l7K7twW49Ct4wFluZD3tZ6e0SjanjcUUBPVD/UuGU=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 h1:bkypFPDjIYGfCYD5mRBvpqxfYX1YCS1PXdKYWi8FsN0=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0/go.mod h1:P+Lt/0by1T8bfcF3z737NnSbmxQAppXMRziHUxPOC8k=
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 h1:2VTzZjLZBgl62/EtslCrtky5vbi9dd7HrQPQIx6wqiw=

internal/profiling/profiling.go

@@ -0,0 +1,267 @@
+package profiling
+
+import (
+	"runtime"
+	"sync"
+	"time"
+
+	"github.com/grafana/pyroscope-go"
+
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/core/proc"
+	"github.com/zeromicro/go-zero/core/stat"
+	"github.com/zeromicro/go-zero/core/threading"
+)
+
+type (
+	Config struct {
+		// Name is the name of the application.
+		Name string `json:",optional,inherit"`
+		// ServerAddress is the address of the profiling server.
+		ServerAddress string
+		// AuthUser is the username for basic authentication.
+		AuthUser string `json:",optional"`
+		// AuthPassword is the password for basic authentication.
+		AuthPassword string `json:",optional"`
+		// UploadDuration is the duration for which profiling data is uploaded.
+		UploadDuration time.Duration `json:",default=15s"`
+		// IntervalDuration is the interval for which profiling data is collected.
+		IntervalDuration time.Duration `json:",default=10s"`
+		// ProfilingDuration is the duration for which profiling data is collected.
+		ProfilingDuration time.Duration `json:",default=2m"`
+		// CpuThreshold the collection is allowed only when the current service cpu < CpuThreshold
+		CpuThreshold int64 `json:",default=700,range=[0:1000)"`
+
+		// ProfileType is the type of profiling to be performed.
+		ProfileType ProfileType
+	}
+
+	ProfileType struct {
+		// Logger is a flag to enable or disable logging.
+		Logger bool `json:",default=false"`
+		// CPU is a flag to disable CPU profiling.
+		CPU bool `json:",default=true"`
+		// Goroutines is a flag to disable goroutine profiling.
+		Goroutines bool `json:",default=true"`
+		// Memory is a flag to disable memory profiling.
+		Memory bool `json:",default=true"`
+		// Mutex is a flag to disable mutex profiling.
+		Mutex bool `json:",default=false"`
+		// Block is a flag to disable block profiling.
+		Block bool `json:",default=false"`
+	}
+
+	profiler interface {
+		Start() error
+		Stop() error
+	}
+
+	pyProfiler struct {
+		c        Config
+		profiler *pyroscope.Profiler
+	}
+)
+
+var (
+	once sync.Once
+
+	newProfiler = func(c Config) profiler {
+		return newPyProfiler(c)
+	}
+)
+
+// Start initializes the pyroscope profiler with the given configuration.
+func Start(c Config) {
+	// check if the profiling is enabled
+	if c.ServerAddress == "" {
+		return
+	}
+
+	// set default values for the configuration
+	if c.ProfilingDuration <= 0 {
+		c.ProfilingDuration = time.Minute * 2
+	}
+
+	// set default values for the configuration
+	if c.IntervalDuration <= 0 {
+		c.IntervalDuration = time.Second * 10
+	}
+
+	if c.UploadDuration <= 0 {
+		c.UploadDuration = time.Second * 15
+	}
+
+	once.Do(func() {
+		logx.Info("continuous profiling started")
+
+		var done = make(chan struct{})
+		proc.AddShutdownListener(func() {
+			done <- struct{}{}
+			close(done)
+		})
+
+		threading.GoSafe(func() {
+			startPyroScope(c, done)
+		})
+	})
+}
+
+// startPyroScope starts the pyroscope profiler with the given configuration.
+func startPyroScope(c Config, done <-chan struct{}) {
+	var (
+		intervalTicker  = time.NewTicker(c.IntervalDuration)
+		profilingTicker = time.NewTicker(c.ProfilingDuration)
+
+		pr  profiler
+		err error
+
+		latestProfilingTime time.Time
+	)
+
+	for {
+		select {
+		case <-intervalTicker.C:
+			// Check if the machine is overloaded and if the profiler is not running
+			if pr == nil && checkMachinePerformance(c) {
+				pr = newProfiler(c)
+				if err := pr.Start(); err != nil {
+					logx.Errorf("failed to start profiler: %v", err)
+					continue
+				}
+
+				// record the latest profiling time
+				latestProfilingTime = time.Now()
+				logx.Infof("pyroScope profiler started.")
+			}
+		case <-profilingTicker.C:
+			// check if the profiling duration has passed
+			if !time.Now().After(latestProfilingTime.Add(c.ProfilingDuration)) {
+				continue
+			}
+
+			// check if the profiler is already running, if so, skip
+			if pr != nil {
+				if err = pr.Stop(); err != nil {
+					logx.Errorf("failed to stop profiler: %v", err)
+				}
+				logx.Infof("pyroScope profiler stopped.")
+				pr = nil
+			}
+		case <-done:
+			logx.Infof("continuous profiling stopped.")
+			intervalTicker.Stop()
+			profilingTicker.Stop()
+			return
+		}
+	}
+}
+
+// genPyroScopeConf generates the pyroscope configuration based on the given config.
+func genPyroScopeConf(c Config) pyroscope.Config {
+	pConf := pyroscope.Config{
+		UploadRate:        c.UploadDuration,
+		ApplicationName:   c.Name,
+		BasicAuthUser:     c.AuthUser,     // http basic auth user
+		BasicAuthPassword: c.AuthPassword, // http basic auth password
+		ServerAddress:     c.ServerAddress,
+		Logger:            nil,
+
+		HTTPHeaders: map[string]string{},
+
+		// you can provide static tags via a map:
+		Tags: map[string]string{
+			"name": c.Name,
+		},
+	}
+
+	if c.ProfileType.Logger {
+		pConf.Logger = logx.WithCallerSkip(0)
+	}
+
+	if c.ProfileType.CPU {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileCPU)
+	}
+	if c.ProfileType.Goroutines {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileGoroutines)
+	}
+	if c.ProfileType.Memory {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileAllocObjects, pyroscope.ProfileAllocSpace,
+			pyroscope.ProfileInuseObjects, pyroscope.ProfileInuseSpace)
+	}
+	if c.ProfileType.Mutex {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileMutexCount, pyroscope.ProfileMutexDuration)
+	}
+	if c.ProfileType.Block {
+		pConf.ProfileTypes = append(pConf.ProfileTypes, pyroscope.ProfileBlockCount, pyroscope.ProfileBlockDuration)
+	}
+
+	logx.Infof("applicationName: %s", pConf.ApplicationName)
+
+	return pConf
+}
+
+// checkMachinePerformance checks the machine performance based on the given configuration.
+func checkMachinePerformance(c Config) bool {
+	currentValue := stat.CpuUsage()
+	if currentValue >= c.CpuThreshold {
+		logx.Infof("continuous profiling cpu overload, cpu:%d", currentValue)
+		return true
+	}
+
+	return false
+}
+
+func newPyProfiler(c Config) profiler {
+	return &pyProfiler{
+		c: c,
+	}
+}
+
+func (p *pyProfiler) Start() error {
+	pConf := genPyroScopeConf(p.c)
+	// set mutex and block profile rate
+	setFraction(p.c)
+	profiler, err := pyroscope.Start(pConf)
+	if err != nil {
+		resetFraction(p.c)
+		return err
+	}
+
+	p.profiler = profiler
+	return nil
+}
+
+func (p *pyProfiler) Stop() error {
+	if p.profiler == nil {
+		return nil
+	}
+
+	err := p.profiler.Stop()
+	if err != nil {
+		return err
+	}
+	resetFraction(p.c)
+	p.profiler = nil
+
+	return nil
+}
+
+func setFraction(c Config) {
+	// These 2 lines are only required if you're using mutex or block profiling
+	if c.ProfileType.Mutex {
+		runtime.SetMutexProfileFraction(10) // 10/seconds
+	}
+	if c.ProfileType.Block {
+		runtime.SetBlockProfileRate(1000 * 1000) //  1/millisecond
+	}
+}
+
+func resetFraction(c Config) {
+	// These 2 lines are only required if you're using mutex or block profiling
+	if c.ProfileType.Mutex {
+		runtime.SetMutexProfileFraction(0)
+	}
+	if c.ProfileType.Block {
+		runtime.SetBlockProfileRate(0)
+	}
+}