Add grpc retry (#1160)

* Add grpc retry

* Update grpc retry

* Add tests

* Fix a bug

* Add api && some tests

* Add comment

* Add double check

* Add server retry quota

* Update optimize code

* Fix bug

* Update optimize code

* Update optimize code

* Fix bug

zrpc/internal/clientinterceptors/retryinterceptor.go

@@ -0,0 +1,19 @@
+package clientinterceptors
+
+import (
+	"context"
+	"github.com/tal-tech/go-zero/core/retry"
+	"google.golang.org/grpc"
+)
+
+// RetryInterceptor retry interceptor
+func RetryInterceptor(enable bool) grpc.UnaryClientInterceptor {
+	return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+		if !enable {
+			return invoker(ctx, method, req, reply, cc, opts...)
+		}
+		return retry.Do(ctx, func(ctx context.Context, callOpts ...grpc.CallOption) error {
+			return invoker(ctx, method, req, reply, cc, callOpts...)
+		}, opts...)
+	}
+}