rename rpcx to zrpc

zrpc/internal/clientinterceptors/tracinginterceptor.go

@@ -0,0 +1,24 @@
+package clientinterceptors
+
+import (
+	"context"
+
+	"github.com/tal-tech/go-zero/core/trace"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+func TracingInterceptor(ctx context.Context, method string, req, reply interface{},
+	cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+	ctx, span := trace.StartClientSpan(ctx, cc.Target(), method)
+	defer span.Finish()
+
+	var pairs []string
+	span.Visit(func(key, val string) bool {
+		pairs = append(pairs, key, val)
+		return true
+	})
+	ctx = metadata.AppendToOutgoingContext(ctx, pairs...)
+
+	return invoker(ctx, method, req, reply, cc, opts...)
+}