feature(retry): Delete retry mechanism (#1279)

zrpc/internal/serverinterceptors/retryinterceptor.go

@@ -1,35 +0,0 @@
-package serverinterceptors
-
-import (
-	"context"
-	"strconv"
-
-	"github.com/tal-tech/go-zero/core/logx"
-	"github.com/tal-tech/go-zero/core/retry"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/status"
-)
-
-func RetryInterceptor(maxAttempt int) grpc.UnaryServerInterceptor {
-	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo,
-		handler grpc.UnaryHandler) (resp interface{}, err error) {
-		var md metadata.MD
-		requestMd, ok := metadata.FromIncomingContext(ctx)
-		if ok {
-			md = requestMd.Copy()
-			attemptMd := md.Get(retry.AttemptMetadataKey)
-			if len(attemptMd) != 0 && attemptMd[0] != "" {
-				if attempt, err := strconv.Atoi(attemptMd[0]); err == nil {
-					if attempt > maxAttempt {
-						logx.WithContext(ctx).Errorf("retries exceeded:%d, max retries:%d", attempt, maxAttempt)
-						return nil, status.Error(codes.FailedPrecondition, "Retries exceeded")
-					}
-				}
-			}
-		}
-
-		return handler(ctx, req)
-	}
-}

zrpc/internal/serverinterceptors/retryinterceptor_test.go

@@ -1,45 +0,0 @@
-package serverinterceptors
-
-import (
-	"context"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/tal-tech/go-zero/core/retry"
-	"google.golang.org/grpc/metadata"
-)
-
-func TestRetryInterceptor(t *testing.T) {
-	t.Run("retries exceeded", func(t *testing.T) {
-		interceptor := RetryInterceptor(2)
-		ctx := metadata.NewIncomingContext(context.Background(),
-			metadata.New(map[string]string{retry.AttemptMetadataKey: "3"}))
-		resp, err := interceptor(ctx, nil, nil, func(ctx context.Context,
-			req interface{}) (interface{}, error) {
-			return nil, nil
-		})
-		assert.Error(t, err)
-		assert.Nil(t, resp)
-	})
-
-	t.Run("reasonable retries", func(t *testing.T) {
-		interceptor := RetryInterceptor(2)
-		ctx := metadata.NewIncomingContext(context.Background(),
-			metadata.New(map[string]string{retry.AttemptMetadataKey: "2"}))
-		resp, err := interceptor(ctx, nil, nil, func(ctx context.Context,
-			req interface{}) (interface{}, error) {
-			return nil, nil
-		})
-		assert.NoError(t, err)
-		assert.Nil(t, resp)
-	})
-	t.Run("no retries", func(t *testing.T) {
-		interceptor := RetryInterceptor(0)
-		resp, err := interceptor(context.Background(), nil, nil,
-			func(ctx context.Context, req interface{}) (interface{}, error) {
-				return nil, nil
-			})
-		assert.NoError(t, err)
-		assert.Nil(t, resp)
-	})
-}