feat(pubsub): create_subscription_with_filter (GoogleCloudPlatform#1604)

Author: vishwarajanand

pubsub/api/src/create_subscription_with_filter.php

@@ -0,0 +1,52 @@
+
+/**
+ * Copyright 2022 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/master/pubsub/api/README.md
+ */
+
+namespace Google\Cloud\Samples\PubSub;
+
+# [START pubsub_create_subscription_with_filter]
+use Google\Cloud\PubSub\PubSubClient;
+
+/**
+ * Creates a Pub/Sub 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 $filter  The Pub/Sub subscription filter.
+ */
+function create_subscription_with_filter($projectId, $topicName, $subscriptionName, $filter)
+{
+    $pubsub = new PubSubClient([
+        'projectId' => $projectId,
+    ]);
+    $topic = $pubsub->topic($topicName);
+    $subscription = $topic->subscription($subscriptionName);
+
+    $subscription->create(['filter' => $filter]);
+
+    printf('Subscription created: %s' . PHP_EOL, $subscription->name());
+    printf('Subscription info: %s' . PHP_EOL, json_encode($subscription->info()));
+}
+# [END pubsub_create_subscription_with_filter]
+require_once __DIR__ . '/../../../testing/sample_helpers.php';
+\Google\Cloud\Samples\execute_sample(__FILE__, __NAMESPACE__, $argv);

pubsub/api/test/pubsubTest.php

@@ -195,6 +195,36 @@ public function testCreateAndDeleteSubscription()
         $this->assertRegExp(sprintf('/%s/', $subscription), $output);
     }
 
+    public function testCreateAndDeleteSubscriptionWithFilter()
+    {
+        $topic = $this->requireEnv('GOOGLE_PUBSUB_TOPIC');
+        $subscription = 'test-subscription-' . rand();
+        $filter = 'attributes.author="unknown"';
+        $output = $this->runFunctionSnippet('create_subscription_with_filter', [
+            self::$projectId,
+            $topic,
+            $subscription,
+            $filter
+        ]);
+        $this->assertStringContainsString(sprintf(
+            'Subscription created: projects/%s/subscriptions/%s',
+            self::$projectId,
+            $subscription
+        ), $output);
+        $this->assertStringContainsString('"filter":"attributes.author=\"unknown\""', $output);
+
+        $output = $this->runFunctionSnippet('delete_subscription', [
+            self::$projectId,
+            $subscription,
+        ]);
+
+        $this->assertStringContainsString(sprintf(
+            'Subscription deleted: projects/%s/subscriptions/%s',
+            self::$projectId,
+            $subscription
+        ), $output);
+    }
+
     public function testCreateAndDeletePushSubscription()
     {
         $topic = $this->requireEnv('GOOGLE_PUBSUB_TOPIC');