Add monitoring_alert_delete_channel code, tag, and test.

Author: dzlier-gcp

monitoring/v3/src/main/java/com/example/DeleteNotificationChannel.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2018 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.
+ */
+
+package com.example;
+
+import com.google.cloud.monitoring.v3.NotificationChannelServiceClient;
+import com.google.monitoring.v3.NotificationChannelName;
+
+import java.io.IOException;
+
+public class DeleteNotificationChannel {
+  /**
+   * Demonstrates deleting a notification channel by name.
+   * @param channelName Name of the notification channel to delete.
+   */
+  // [START monitoring_alert_delete_channel]
+  static void deleteNotificationChannel(String channelName) throws IOException {
+    String projectId = System.getProperty("projectId");
+    try (NotificationChannelServiceClient client = NotificationChannelServiceClient.create()) {
+      NotificationChannelName name = NotificationChannelName.of(projectId, channelName);
+      client.deleteNotificationChannel(channelName, false);
+      System.out.println("Deleted notification channel " + channelName);
+    }
+  }
+  // [END monitoring_alert_delete_channel]
+}

monitoring/v3/src/test/java/com/example/DeleteNotificationChannelIT.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2018 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.
+ */
+
+package com.example;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.google.cloud.monitoring.v3.NotificationChannelServiceClient;
+import com.google.monitoring.v3.NotificationChannel;
+import com.google.monitoring.v3.ProjectName;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+/**
+ * Tests for delete notification channel sample.
+ */
+@RunWith(JUnit4.class)
+@SuppressWarnings("checkstyle:abbreviationaswordinname")
+public class DeleteNotificationChannelIT {
+  private ByteArrayOutputStream bout;
+  private PrintStream out;
+  private static final String LEGACY_PROJECT_ENV_NAME = "GCLOUD_PROJECT";
+  private static final String PROJECT_ENV_NAME = "GOOGLE_CLOUD_PROJECT";
+  private static String NOTIFICATION_CHANNEL_NAME = "channelname";
+  private static NotificationChannel NOTIFICATION_CHANNEL;
+
+  private static String getProjectId() {
+    String projectId = System.getProperty(PROJECT_ENV_NAME, System.getenv(PROJECT_ENV_NAME));
+    if (projectId == null) {
+      projectId = System.getProperty(LEGACY_PROJECT_ENV_NAME,
+          System.getenv(LEGACY_PROJECT_ENV_NAME));
+    }
+    return projectId;
+  }
+
+  @BeforeClass
+  public static void setupClass() throws IOException {
+    try (NotificationChannelServiceClient client = NotificationChannelServiceClient.create()) {
+      String projectId = getProjectId();
+      NOTIFICATION_CHANNEL = NotificationChannel.newBuilder()
+          .setType("email")
+          .putLabels("email_address", "[email protected]")
+          .build();
+      NotificationChannel channel = client.createNotificationChannel(ProjectName.of(projectId),
+          NOTIFICATION_CHANNEL);
+      NOTIFICATION_CHANNEL_NAME = channel.getName();
+    }
+  }
+
+  @Before
+  public void setUp() {
+    bout = new ByteArrayOutputStream();
+    out = new PrintStream(bout);
+    System.setOut(out);
+    System.setProperty("projectId", DeleteNotificationChannelIT.getProjectId());
+  }
+
+  @After
+  public void tearDown() {
+    System.setOut(null);
+  }
+
+  @Test
+  public void testDeleteNotificationChannel() throws Exception {
+    // Act
+    DeleteNotificationChannel.deleteNotificationChannel(NOTIFICATION_CHANNEL_NAME);
+    // Assert
+    String got = bout.toString();
+    assertThat(got).contains(NOTIFICATION_CHANNEL_NAME);
+  }
+}