feat(PubSub): Add CPS to GCS sample (#1874)

pubsub/api/composer.json

@@ -1,6 +1,6 @@
 {
     "require": {
-        "google/cloud-pubsub": "^1.39",
+        "google/cloud-pubsub": "^1.46",
         "rg/avro-php": "^2.0.1||^3.0.0"
     }
 }

pubsub/api/src/create_cloud_storage_subscription.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright 2023 Google Inc.
+ *
+ * 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/main/pubsub/api/README.md
+ */
+
+namespace Google\Cloud\Samples\PubSub;
+
+# [START pubsub_create_cloud_storage_subscription]
+use Google\Cloud\PubSub\PubSubClient;
+
+/**
+ * Creates a Pub/Sub GCS subscription.
+ *
+ * @param string $projectId  The Google project ID.
+ * @param string $topicName  The Pub/Sub topic name.
+ * @param string $subscriptionName  The Pub/Sub subscription name.
+ * @param string $bucket The Cloud Storage bucket name without any prefix like "gs://".
+ */
+function create_cloud_storage_subscription($projectId, $topicName, $subscriptionName, $bucket)
+{
+    $pubsub = new PubSubClient([
+        'projectId' => $projectId,
+    ]);
+    $topic = $pubsub->topic($topicName);
+    $subscription = $topic->subscription($subscriptionName);
+    $config = ['bucket' => $bucket];
+    $subscription->create([
+        'cloudStorageConfig' => $config
+    ]);
+
+    printf('Subscription created: %s' . PHP_EOL, $subscription->name());
+}
+# [END pubsub_create_cloud_storage_subscription]
+require_once __DIR__ . '/../../../testing/sample_helpers.php';
+\Google\Cloud\Samples\execute_sample(__FILE__, __NAMESPACE__, $argv);

pubsub/api/test/pubsubTest.php

@@ -309,6 +309,31 @@ public function testCreateAndDeleteBigQuerySubscription()
         $this->assertMatchesRegularExpression(sprintf('/%s/', $subscription), $output);
     }
 
+    public function testCreateAndDeleteStorageSubscription()
+    {
+        $topic = $this->requireEnv('GOOGLE_PUBSUB_TOPIC');
+        $subscription = 'test-subscription-' . rand();
+        $bucket = $this->requireEnv('GOOGLE_PUBSUB_STORAGE_BUCKET');
+
+        $output = $this->runFunctionSnippet('create_cloud_storage_subscription', [
+            self::$projectId,
+            $topic,
+            $subscription,
+            $bucket,
+        ]);
+
+        $this->assertMatchesRegularExpression('/Subscription created:/', $output);
+        $this->assertMatchesRegularExpression(sprintf('/%s/', $subscription), $output);
+
+        $output = $this->runFunctionSnippet('delete_subscription', [
+            self::$projectId,
+            $subscription,
+        ]);
+
+        $this->assertMatchesRegularExpression('/Subscription deleted:/', $output);
+        $this->assertMatchesRegularExpression(sprintf('/%s/', $subscription), $output);
+    }
+
     public function testCreateAndDetachSubscription()
     {
         $topic = $this->requireEnv('GOOGLE_PUBSUB_TOPIC');