Logging

    gRPC server

    By passing in grpc.ServerOption, Kratos will print detailed request information every time a gRPC request is received.

    gRPC client

    1. logger := log.DefaultLogger
    2. var opts = []http.ServerOption{
    3.     http.Middleware(
    4.         logging.Server(logger),
    5.     ),
    6. }

    HTTP client

    By passing logging.Client() in http.WithMiddleware, Kratos will print detailed request information every time an Http request is initiated.

    grpc-server

    1. // internal/server/grpc.go
    3. exporter, err := stdouttrace.New(stdouttrace.WithWriter(ioutil.Discard))
    4. if err != nil {
    5.     fmt.Printf("creating stdout exporter: %v", err)
    6.     panic(err)
    7. }
    9. tp := tracesdk.NewTracerProvider(
    10.     tracesdk.WithBatcher(exporter),
    11.     tracesdk.WithResource(resource.NewSchemaless(
    13. )
    15. var opts = []grpc.ServerOption{
    16.   grpc.Middleware(
    17.     tracing.Server(tracing.WithTracerProvider(tp)),
    18.   ),
    19. }
    21. srv := grpc.NewServer(opts...)

    Add the trace_id field to the output log

    1. log.WithContext(ctx).Errorf("Field created: %s", err)