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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package simple_k8s | ||
|
|
||
| import ( | ||
| "sync" | ||
| "time" | ||
|
|
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| "google.golang.org/grpc/health" | ||
| healthpb "google.golang.org/grpc/health/grpc_health_v1" | ||
| ) | ||
|
|
||
| type AliveGuard struct { | ||
| mutex sync.Mutex | ||
| healthCheckServer *health.Server | ||
| timeThreshold time.Duration | ||
| serviceName string | ||
| failed bool | ||
| } | ||
|
|
||
| func NewAliveGuard(healtServer *health.Server, threshold time.Duration, serviceName string) *AliveGuard { | ||
| return &AliveGuard{ | ||
| healthCheckServer: healtServer, | ||
| timeThreshold: threshold, | ||
| serviceName: serviceName, | ||
| failed: false, | ||
| } | ||
| } | ||
|
|
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| func (g *AliveGuard) CheckTimeDuration(startTime time.Time) { | ||
| if g.failed { | ||
| return | ||
| } | ||
|
|
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| if time.Since(startTime) > g.timeThreshold { | ||
| g.mutex.Lock() | ||
| defer g.mutex.Unlock() | ||
| if !g.failed { | ||
| g.failed = true | ||
| g.healthCheckServer.SetServingStatus(g.serviceName, healthpb.HealthCheckResponse_NOT_SERVING) | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
|
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| func GetAppAliveGuard(threshold time.Duration) *AliveGuard { | ||
| return NewAliveGuard(healthCheckServer, threshold, "") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package simple_k8s | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "net" | ||
|
|
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| "google.golang.org/grpc" | ||
| "google.golang.org/grpc/health" | ||
| healthgrpc "google.golang.org/grpc/health/grpc_health_v1" | ||
| healthpb "google.golang.org/grpc/health/grpc_health_v1" | ||
| ) | ||
|
|
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| const HealthPort = 9666 | ||
| const CheckName = "alive" | ||
|
|
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| var healthCheckServer *health.Server = &health.Server{} | ||
|
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| func EnableLivelinessCheck() { | ||
|
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| lis, err := net.Listen("tcp", fmt.Sprintf(":%d", HealthPort)) | ||
| if err != nil { | ||
| log.Fatalf("failed to listen: %v", err) | ||
| } | ||
|
|
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| s := grpc.NewServer() | ||
| *healthCheckServer = *health.NewServer() | ||
| healthCheckServer.SetServingStatus(CheckName, healthpb.HealthCheckResponse_SERVING) | ||
| healthgrpc.RegisterHealthServer(s, healthCheckServer) | ||
| s.Serve(lis) | ||
| } | ||
|
|
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| func DisableLivelinessCheck() { | ||
|
|
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| healthCheckServer.SetServingStatus(CheckName, healthpb.HealthCheckResponse_NOT_SERVING) | ||
| } |
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