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<?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;
/**
* Represents an interceptor that intercept RPC invocations before call starts.
* This is an EXPERIMENTAL API.
*/
class Interceptor
{
public function interceptUnaryUnary(
$method,
$argument,
array $metadata = [],
array $options = [],
$continuation
) {
return $continuation($method, $argument, $metadata, $options);
}
public function interceptStreamUnary(
$method,
array $metadata = [],
array $options = [],
$continuation
) {
return $continuation($method, $metadata, $options);
}
public function interceptUnaryStream(
$method,
$argument,
array $metadata = [],
array $options = [],
$continuation
) {
return $continuation($method, $argument, $metadata, $options);
}
public function interceptStreamStream(
$method,
array $metadata = [],
array $options = [],
$continuation
) {
return $continuation($method, $metadata, $options);
}
/**
* Intercept the methods with Channel
*
* @param Channel|InterceptorChannel $channel An already created Channel or InterceptorChannel object (optional)
* @param Interceptor|Interceptor[] $interceptors interceptors to be added
*
* @return InterceptorChannel
*/
public static function intercept($channel, $interceptors)
{
if (is_array($interceptors)) {
for ($i = count($interceptors) - 1; $i >= 0; $i--) {
$channel = new Internal\InterceptorChannel($channel, $interceptors[$i]);
}
} else {
$channel = new Internal\InterceptorChannel($channel, $interceptors);
}
return $channel;
}
}
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