add p2c peak ewma load balancer

rpcx/internal/clientinterceptors/breakerinterceptor.go

@@ -5,25 +5,15 @@ import (
 	"path"
 
 	"zero/core/breaker"
+	"zero/rpcx/internal/codes"
 
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
 )
 
-func acceptable(err error) bool {
-	switch status.Code(err) {
-	case codes.DeadlineExceeded, codes.Internal, codes.Unavailable, codes.DataLoss:
-		return false
-	default:
-		return true
-	}
-}
-
 func BreakerInterceptor(ctx context.Context, method string, req, reply interface{},
 	cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
 	breakerName := path.Join(cc.Target(), method)
 	return breaker.DoWithAcceptable(breakerName, func() error {
 		return invoker(ctx, method, req, reply, cc, opts...)
-	}, acceptable)
+	}, codes.Acceptable)
 }

rpcx/internal/clientinterceptors/breakerinterceptor_test.go

@@ -5,6 +5,7 @@ import (
 
 	"zero/core/breaker"
 	"zero/core/stat"
+	rcodes "zero/rpcx/internal/codes"
 
 	"github.com/stretchr/testify/assert"
 	"google.golang.org/grpc/codes"
@@ -32,7 +33,7 @@ func TestBreakerInterceptorNotFound(t *testing.T) {
 	for i := 0; i < 1000; i++ {
 		assert.Equal(t, err, breaker.DoWithAcceptable("call", func() error {
 			return err
-		}, acceptable))
+		}, rcodes.Acceptable))
 	}
 }
 
@@ -42,7 +43,7 @@ func TestBreakerInterceptorDeadlineExceeded(t *testing.T) {
 	for i := 0; i < 1000; i++ {
 		e := breaker.DoWithAcceptable("call", func() error {
 			return err
-		}, acceptable)
+		}, rcodes.Acceptable)
 		errs[e]++
 	}
 	assert.Equal(t, 2, len(errs))