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<?php

/**

* Copyright 2019 Google LLC

*

* 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.

*/

/**

* For instructions on how to run the full sample:

*

* @see https://github.com/GoogleCloudPlatform/php-docs-samples/blob/master/pubsub/api/README.md

*/

namespace Google\Cloud\Samples\PubSub;

# [START pubsub_publisher_batch_settings]

use Google\Cloud\PubSub\PubSubClient;

/**

* Publishes a message for a Pub/Sub topic.

*

* The publisher should be used in conjunction with the `google-cloud-batch`

* daemon, which should be running in the background.

*

* To start the daemon, from your project root call `vendor/bin/google-cloud-batch daemon`.

*

* @param string $projectId The Google project ID.

* @param string $topicName The Pub/Sub topic name.

* @param string $message The message to publish.

*/

function publish_message_batch($projectId, $topicName, $message)

{

// Check if the batch daemon is running.

if (getenv('IS_BATCH_DAEMON_RUNNING') !== 'true') {

trigger_error(

'The batch daemon is not running. Call ' .

'`vendor/bin/google-cloud-batch daemon` from ' .

'your project root to start the daemon.',

E_USER_NOTICE

);

}

$batchOptions = [

'batchSize' => 100, // Max messages for each batch.

'callPeriod' => 0.01, // Max time in seconds between each batch publish.

];

$pubsub = new PubSubClient([

'projectId' => $projectId,

]);

$topic = $pubsub->topic($topicName);

$publisher = $topic->batchPublisher([

'batchOptions' => $batchOptions

]);

for ($i = 0; $i < 10; $i++) {

$publisher->publish(['data' => $message]);

}

print('Messages enqueued for publication.' . PHP_EOL);

}

# [END pubsub_publisher_batch_settings]