grpc/php/files/ServerStreamingCall.php.txt

<?php
/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met:
 *
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 * 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
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 * 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
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 */
namespace Grpc;

/**
 * Represents an active call that sends a single message and then gets a stream
 * of reponses
 */
class ServerStreamingCall extends AbstractCall {
  /**
   * Start the call
   * @param $arg The argument to send
   * @param array $metadata Metadata to send with the call, if applicable
   */
  public function start($arg, $metadata = array()) {
    $event = $this->call->startBatch([
        OP_SEND_INITIAL_METADATA => $metadata,
        OP_RECV_INITIAL_METADATA => true,
        OP_SEND_MESSAGE => $arg->serialize(),
        OP_SEND_CLOSE_FROM_CLIENT => true]);
    $this->metadata = $event->metadata;
  }

  /**
   * @return An iterator of response values
   */
  public function responses() {
    $response = $this->call->startBatch([OP_RECV_MESSAGE => true])->message;
    while($response !== null) {
      yield $this->deserializeResponse($response);
      $response = $this->call->startBatch([OP_RECV_MESSAGE => true])->message;
    }
  }

  /**
   * Wait for the server to send the status, and return it.
   * @return object 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
                                              ]);
    return $status_event->status;
  }
}