1 files changed, 33 insertions, 0 deletions
diff --git a/src/php/lib/Grpc/CallInvoker.php b/src/php/lib/Grpc/CallInvoker.php
new file mode 100644
index 0000000000..a1b4553212
--- /dev/null
+++ b/src/php/lib/Grpc/CallInvoker.php
@@ -0,0 +1,33 @@
+<?php
+/*
+ *
+ * Copyright 2018 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+namespace Grpc;
+
+/**
+ * CallInvoker is used to pass the self defined channel into the stub,
+ * while intercept each RPC with the channel accessible.
+ * THIS IS AN EXPERIMENTAL API.
+ */
+interface CallInvoker
+{
+    public function createChannelFactory($hostname, $opts);
+    public function UnaryCall($channel, $method, $deserialize, $options);
+    public function ClientStreamingCall($channel, $method, $deserialize, $options);
+    public function ServerStreamingCall($channel, $method, $deserialize, $options);
+    public function BidiStreamingCall($channel, $method, $deserialize, $options);
+}