Viewing file:  GCPBidiStreamingCall.php (3.11 KB) -rw-r--r--
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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\Gcp;
/**
* Represents an active call that allows for sending and recieving messages
* in streams in any order.
*/
class GCPBidiStreamingCall extends GcpBaseCall
{
private $response = null;
protected function createRealCall($data = null)
{
$channel_ref = $this->_rpcPreProcess($data);
$this->real_call = new \Grpc\BidiStreamingCall($channel_ref->getRealChannel(
$this->gcp_channel->credentials), $this->method, $this->deserialize, $this->options);
$this->real_call->start($this->metadata_rpc);
return $this->real_call;
}
/**
* Pick a channel and start the call.
*
* @param array $metadata Metadata to send with the call, if applicable
* (optional)
*/
public function start(array $metadata = [])
{
$this->metadata_rpc = $metadata;
}
/**
* Reads the next value from the server.
*
* @return mixed The next value from the server, or null if there is none
*/
public function read()
{
if (!$this->has_real_call) {
$this->createRealCall();
$this->has_real_call = true;
}
$response = $this->real_call->read();
if ($response) {
$this->response = $response;
}
return $response;
}
/**
* Write a single message to the server. This cannot be called after
* writesDone is called.
*
* @param ByteBuffer $data The data to write
* @param array $options An array of options, possible keys:
* 'flags' => a number (optional)
*/
public function write($data, array $options = [])
{
if (!$this->has_real_call) {
$this->createRealCall($data);
$this->has_real_call = true;
}
$this->real_call->write($data, $options);
}
/**
* Indicate that no more writes will be sent.
*/
public function writesDone()
{
if (!$this->has_real_call) {
$this->createRealCall();
$this->has_real_call = true;
}
$this->real_call->writesDone();
}
/**
* Wait for the server to send the status, and return it.
*
* @return \stdClass The status object, with integer $code, string
* $details, and array $metadata members
*/
public function getStatus()
{
$status = $this->real_call->getStatus();
$this->_rpcPostProcess($status, $this->response);
return $status;
}
}
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