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Issue argoproj#340 - add gRPC payload logging interceptor
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Alexander Matyushentsev
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Alexander Matyushentsev
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Jul 19, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package grpc | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
|
|
||
| "golang.org/x/net/context" | ||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/gogo/protobuf/proto" | ||
| "github.com/grpc-ecosystem/go-grpc-middleware/logging" | ||
| "github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus" | ||
| "github.com/grpc-ecosystem/go-grpc-middleware/tags/logrus" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| func logRequest(entry *logrus.Entry, info string, pbMsg interface{}, ctx context.Context, logClaims bool) { | ||
| if logClaims { | ||
| if data, err := json.Marshal(ctx.Value("claims")); err == nil { | ||
| entry = entry.WithField("grpc.request.claims", string(data)) | ||
| } | ||
| } | ||
| if p, ok := pbMsg.(proto.Message); ok { | ||
| entry = entry.WithField("grpc.request.content", &jsonpbMarshalleble{p}) | ||
| } | ||
| entry.Info(info) | ||
| } | ||
|
|
||
| type jsonpbMarshalleble struct { | ||
| proto.Message | ||
| } | ||
|
|
||
| func (j *jsonpbMarshalleble) MarshalJSON() ([]byte, error) { | ||
| b := &bytes.Buffer{} | ||
| if err := grpc_logrus.JsonPbMarshaller.Marshal(b, j.Message); err != nil { | ||
| return nil, fmt.Errorf("jsonpb serializer failed: %v", err) | ||
| } | ||
| return b.Bytes(), nil | ||
| } | ||
|
|
||
| type loggingServerStream struct { | ||
| grpc.ServerStream | ||
| entry *logrus.Entry | ||
| logClaims bool | ||
| info string | ||
| } | ||
|
|
||
| func (l *loggingServerStream) SendMsg(m interface{}) error { | ||
| return l.ServerStream.SendMsg(m) | ||
| } | ||
|
|
||
| func (l *loggingServerStream) RecvMsg(m interface{}) error { | ||
| err := l.ServerStream.RecvMsg(m) | ||
| if err == nil { | ||
| logRequest(l.entry, l.info, m, l.ServerStream.Context(), l.logClaims) | ||
| } | ||
| return err | ||
| } | ||
|
|
||
| func PayloadStreamServerInterceptor(entry *logrus.Entry, logClaims bool, decider grpc_logging.ServerPayloadLoggingDecider) grpc.StreamServerInterceptor { | ||
| return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error { | ||
| if !decider(stream.Context(), info.FullMethod, srv) { | ||
| return handler(srv, stream) | ||
| } | ||
| logEntry := entry.WithFields(ctx_logrus.Extract(stream.Context()).Data) | ||
| newStream := &loggingServerStream{ServerStream: stream, entry: logEntry, logClaims: logClaims, info: fmt.Sprintf("received streaming call %s", info.FullMethod)} | ||
| return handler(srv, newStream) | ||
| } | ||
| } | ||
|
|
||
| func PayloadUnaryServerInterceptor(entry *logrus.Entry, logClaims bool, decider grpc_logging.ServerPayloadLoggingDecider) grpc.UnaryServerInterceptor { | ||
| return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) { | ||
| if !decider(ctx, info.FullMethod, info.Server) { | ||
| return handler(ctx, req) | ||
| } | ||
| logEntry := entry.WithFields(ctx_logrus.Extract(ctx).Data) | ||
| logRequest(logEntry, fmt.Sprintf("received unary call %s", info.FullMethod), req, ctx, logClaims) | ||
| resp, err := handler(ctx, req) | ||
| return resp, err | ||
| } | ||
| } |