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<?php
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
namespace Grpc;
/**
* Represents an active call that allows for sending and recieving messages in
* streams in any order.
*/
class BidiStreamingCall extends AbstractCall
{
/**
* Start the call.
*
* @param array $metadata Metadata to send with the call, if applicable
*/
public function start(array $metadata = [])
{
$this->call->startBatch([
OP_SEND_INITIAL_METADATA => $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()
{
$batch = [OP_RECV_MESSAGE => true];
if ($this->metadata === null) {
$batch[OP_RECV_INITIAL_METADATA] = true;
}
$read_event = $this->call->startBatch($batch);
if ($this->metadata === null) {
$this->metadata = $read_event->metadata;
}
return $this->deserializeResponse($read_event->message);
}
/**
* Write a single message to the server. This cannot be called after
* writesDone is called.
*
* @param ByteBuffer $data The data to write
* @param array $options an array of options, possible keys:
* 'flags' => a number
*/
public function write($data, $options = [])
{
$message_array = ['message' => $data->serialize()];
if (array_key_exists('flags', $options)) {
$message_array['flags'] = $options['flags'];
}
$this->call->startBatch([
OP_SEND_MESSAGE => $message_array,
]);
}
/**
* Indicate that no more writes will be sent.
*/
public function writesDone()
{
$this->call->startBatch([
OP_SEND_CLOSE_FROM_CLIENT => true,
]);
}
/**
* 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_event = $this->call->startBatch([
OP_RECV_STATUS_ON_CLIENT => true,
]);
$this->trailing_metadata = $status_event->status->metadata;
return $status_event->status;
}
}
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