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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; } }