Fix context error in grpc (#962)

* Fix context error in rpc

* Add a test case

* Optimize judgment conditions

* Add customized breaker errors for the client and server

* Update method signature

* Delete customized breaker errors

* Delete the wrong test case

zrpc/internal/serverinterceptors/timeoutinterceptor_test.go

@@ -2,6 +2,8 @@ package serverinterceptors
 
 import (
 	"context"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"sync"
 	"testing"
 	"time"
@@ -66,5 +68,24 @@ func TestUnaryTimeoutInterceptor_timeoutExpire(t *testing.T) {
 		return nil, nil
 	})
 	wg.Wait()
-	assert.Equal(t, context.DeadlineExceeded, err)
+	assert.EqualValues(t, status.Error(codes.DeadlineExceeded, context.DeadlineExceeded.Error()), err)
+}
+func TestUnaryTimeoutInterceptor_cancel(t *testing.T) {
+	const timeout = time.Minute * 10
+	interceptor := UnaryTimeoutInterceptor(timeout)
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	_, err := interceptor(ctx, nil, &grpc.UnaryServerInfo{
+		FullMethod: "/",
+	}, func(ctx context.Context, req interface{}) (interface{}, error) {
+		defer wg.Done()
+		time.Sleep(time.Millisecond * 50)
+		return nil, nil
+	})
+
+	wg.Wait()
+	assert.EqualValues(t, status.Error(codes.Canceled, context.Canceled.Error()), err)
 }