/
grpc.go
78 lines (61 loc) · 1.91 KB
/
grpc.go
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package logger
import (
"context"
"strings"
"go.uber.org/zap"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
)
// UnaryServerInterceptor attaches a logger to the context.
func UnaryServerInterceptor(log *zap.Logger) grpc.UnaryServerInterceptor {
return func(parent context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
service, method := parseServiceAndMethod(info.FullMethod)
log := log.With(
zap.String("grpc_service", service),
zap.String("grpc_method", method))
ctx := ToContext(parent, log)
return handler(ctx, req)
}
}
// StreamServerInterceptor attaches a logger to the context.
func StreamServerInterceptor(log *zap.Logger) grpc.StreamServerInterceptor {
return func(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
service, method := parseServiceAndMethod(info.FullMethod)
log := log.With(
zap.String("grpc_service", service),
zap.String("grpc_method", method))
return handler(srv, &serverStream{
log: log,
delegate: ss,
})
}
}
func parseServiceAndMethod(fullMethod string) (string, string) {
parts := strings.Split(fullMethod, "/")
return parts[1], parts[2]
}
type serverStream struct {
log *zap.Logger
delegate grpc.ServerStream
}
func (s *serverStream) SetHeader(md metadata.MD) error {
return s.delegate.SetHeader(md)
}
func (s *serverStream) SendHeader(md metadata.MD) error {
return s.delegate.SendHeader(md)
}
func (s *serverStream) SetTrailer(md metadata.MD) {
s.delegate.SetTrailer(md)
}
func (s *serverStream) Context() context.Context {
ctx := s.delegate.Context()
ctx = ToContext(ctx, s.log)
return ctx
}
func (s *serverStream) SendMsg(m interface{}) error {
return s.delegate.SendMsg(m)
}
func (s *serverStream) RecvMsg(m interface{}) error {
return s.delegate.RecvMsg(m)
}
var _ grpc.ServerStream = &serverStream{}