透過 API 建立及管理通知管道

Beta 版

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本文說明如何使用用戶端程式庫或 Google Cloud CLI 建立及管理通知管道，這兩種方式都會叫用 Cloud Monitoring API。當符合快訊政策的條件時，Cloud Monitoring 會透過通知管道通知您或待命團隊。可用的管道類型有好幾種，每種類型都會在通知管道描述元中說明。特定類型的通知管道是該類型描述元的例項。快訊政策會參照要當做通知路徑的通知管道。

通知管道必須存在，才能用於快訊政策。系統會提供通知管道描述元，但您必須先建立管道，才能使用。

如要使用 Google Cloud 控制台設定通知管道，請參閱「建立及管理通知管道」。

本文使用的程式碼範例是從 「範例：備份及還原」一節所述的警報政策 API 範例中擷取。

關於 API

NotificationChannel 資源支援的作業可讓您管理通知管道。此外，這個程式庫也支援與管理頻道 verificationStatus 欄位相關的作業：

• 傳送驗證碼
• 產生驗證碼來將已驗證之管道的驗證狀態，複製到同一專案或新專案中的其他相同管道
• 使用前兩項作業建立的驗證碼來驗證管道

詳情請參閱 notificationChannels 參考文件。

注意： 請將應用程式設計為單一執行緒，以便呼叫 Cloud Monitoring API，在Google Cloud 專案中修改通知管道的狀態。例如，建立、修改或刪除通知管道的單一執行緒 API 呼叫。

事前準備

• 如要取得透過 Cloud Monitoring API 查看及設定通知管道所需的權限，請要求管理員授予您專案的Monitoring NotificationChannel 編輯者 (roles/monitoring.notificationChannelEditor) IAM 角色。如要進一步瞭解如何授予角色，請參閱「管理專案、資料夾和機構的存取權」。

  您或許還可透過自訂角色或其他預先定義的角色取得必要權限。

  如要進一步瞭解 Cloud Monitoring 角色，請參閱「使用 Identity and Access Management 控制存取權」。

• Select the tab for how you plan to use the samples on this page:

  gcloud

  In the Google Cloud console, activate Cloud Shell.

  Activate Cloud Shell

  At the bottom of the Google Cloud console, a Cloud Shell session starts and displays a command-line prompt. Cloud Shell is a shell environment with the Google Cloud CLI already installed and with values already set for your current project. It can take a few seconds for the session to initialize.

  C#

  如要在本機開發環境中使用本頁的 .NET 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  Go

  如要在本機開發環境中使用本頁的 Go 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  Java

  如要在本機開發環境中使用本頁的 Java 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  Node.js

  如要在本機開發環境中使用本頁的 Node.js 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  PHP

  如要在本機開發環境中使用本頁的 PHP 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  Python

  如要在本機開發環境中使用本頁的 Python 範例，請安裝並初始化 gcloud CLI，然後使用使用者憑證設定應用程式預設憑證。

  安裝 Google Cloud CLI。

  如果您使用外部識別資訊提供者 (IdP)，請先 使用聯合身分登入 gcloud CLI。

  If you're using a local shell, then create local authentication credentials for your user account:

  gcloud auth application-default login

  You don't need to do this if you're using Cloud Shell.

  If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

  詳情請參閱 Google Cloud 驗證說明文件中的「 為本機開發環境設定 ADC」。

  如果您打算使用 Google Cloud CLI，請設定預設專案：

  gcloud config set project PROJECT_ID
  

  執行上一個指令前，請先取代下列項目：

  • PROJECT_ID：專案的 ID。如要進行 App Hub 設定，請選取 App Hub 主機專案或已啟用應用程式的資料夾管理專案。

列出通知管道類型

Monitoring 提供多種內建通知管道類型。每一種類型都會在 NotificationChannelDescriptor 中說明。這些描述元具有 type 欄位，這個欄位的值可在建立該管道類型的執行個體時做為 ID 使用。如要使用 Cloud Monitoring API 或 Google Cloud CLI 擷取可建立的管道類型清單，請輸入下列指令：

$ gcloud beta monitoring channel-descriptors list --format='value(type)'
campfire
email
google_chat
hipchat
pagerduty
pubsub
slack
sms
webhook_basicauth
webhook_tokenauth

如要進一步瞭解通知管道，請參閱「建立及管理通知管道」。

注意： campfire 和 hipchat 頻道類型已淘汰。請勿建立這類新頻道。

如果系統不支援偏好的通知管道，建議您建立管道，將通知傳送至 Pub/Sub。如需使用 Flask 的 Python 範例，請參閱「使用 Cloud Monitoring 和 Cloud Run 建立自訂通知」。如需其他範例，請參閱 cloud-alerting-notification-forwarding Git 存放區。

如要擷取 Google Cloud 專案中所有的管道描述元，請使用 notificationChannelDescriptors.list 方法。 擷取的描述元為唯讀。

如果您要尋找特定描述元且知道描述元名稱，則可以使用 notificationChannelDescriptors.get 方法只擷取這個管道描述元。管道描述元的名稱格式為 projects/[PROJECT_ID]/notificationChannelDescriptors/[CHANNEL_TYPE]，[CHANNEL_TYPE] 必須是先前列出的其中一種型別。例如：

projects/[PROJECT_ID]/notificationChannelDescriptors/email

gcloud

如要列出 Google Cloud 專案中的所有通知管道描述元，請使用 gcloud beta monitoring channel-descriptors list 指令：

gcloud beta monitoring channel-descriptors list

如果成功，list 指令會提供指定專案中所有管道描述元的清單。舉例來說，email 管道描述元會顯示在清單中，如下所示：

    ---
    description: A channel that sends notifications via email.
    displayName: Email
    labels:
    - description: An address to send email.
      key: email_address
    name: projects/[PROJECT_ID]/notificationChannelDescriptors/email
    type: email
    ---

所有管道描述元都包含下列欄位：

• name：管道描述元的完整資源名稱
• type：名稱中表示管道類型的部分
• displayName：type 欄位的說明，用於顯示
• description：頻道的簡短說明
• labels：一組特定於管道類型的欄位。每種管道類型都有專屬標籤。

建立管道時，系統也會提供 enabled 欄位，預設值為 true。

如要列出單一管道描述元，請改用 gcloud beta monitoring channel-descriptors describe，並指定管道描述元的名稱。您不需要指定完整名稱。舉例來說，下列兩個指令都會傳回上述清單：

gcloud beta monitoring channel-descriptors describe email

gcloud beta monitoring channel-descriptors describe projects/[PROJECT_ID]/notificationChannelDescriptors/email

詳情請參閱 gcloud beta monitoring channel-descriptors list 和 describe 參考資料。describe 指令與 API 中的 notificationChannelDescriptors.get 方法對應。

建立通知管道

您可以透過 Google Cloud CLI，從 JSON 或 YAML 檔案為 Google Cloud 專案建立通知管道，也可以透過程式完成。

如要建立通知管道，您必須提供描述元內的欄位值。這些值，例如 type，在所有通知管道描述元內，大多很常見；請參閱 notificationChannelDescriptors。

每個描述元也包含標籤組合，這個組合會因描述元而不盡相同。如要查看特定描述元的標籤組合，請使用列出通知管道類型中所述的 gcloud beta monitoring channel-descriptors describe 指令，擷取描述元。例如，擷取 email 管道描述元會顯示單一標籤：

    labels:
    - description: An address to send email.
      key: email_address

pubsub 管道描述元也包含單一標籤，該標籤會識別 Pub/Sub 主題。不過，頻道可以包含多個標籤。舉例來說，slack 管道描述元有兩個標籤：

    labels:
    - description: A permanent authentication token provided by Slack. This field is obfuscated by returning only a few characters of the key when fetched.
      key: auth_token
    - description: The Slack channel to which to post notifications.
      key: channel_name

擷取 webhook_basicauth 管道描述元會顯示數個標籤：

    labels:
    - description: The password. The field is obfuscated when the channel is fetched.
      key: password
    - description: The public URL to which to publish the webhook.
      key: url
    - description: The username.
      key: username

無論您是透過程式，或是從指令列建立新管道，規格中的 type 值必須符合對應通知管道描述元中的 type 欄位。任何必要的標籤鍵也都必須與管道描述元中的標籤鍵相符。

某些標籤與用來向供應商驗證的憑證對應。 建立管道時，必須從供應商處取得這些標籤的值。取得憑證可能涉及使用供應商網站上的 API 鍵產生頁面或完成供應商的 OAuth 登入流程。有關如何取得此類憑證的方式，將視特定的供應商而有所差異。

例如，下列顯示採用 JSON 的新 pubsub 通知管道規格：

    {
      "type": "pubsub",
      "displayName": "Notifications",
      "description": "Pub/Sub channel for notifications",
      "labels": {
        "topic": "projects/[PROJECT_ID]/topics/notificationTopic"
      },
    }

type 值 (pubsub) 和單一標籤鍵 (topic) 符合對應管道描述元中的 type 和 labels.key 欄位。

頻道預設為啟用。如要建立非使用中的管道，可以加入 enabled 欄位，並將值設為 false。

注意： 建議您建立多個通知管道，以備不時之需。Google 將通知傳送至許多傳送系統後，就無法控管這些系統。此外，單一 Google 服務支援 Cloud Mobile App、PagerDuty、Webhook 和 Slack。如果您使用其中一個通知管道，請使用電子郵件、簡訊或 Pub/Sub 做為備援管道。

下列範例說明如何建立通知管道。

gcloud

如要在 Google Cloud 專案中建立通知管道，請使用 gcloud beta monitoring channels create 指令。如要從檔案載入管道，請使用 --channel-content-from-file 標記來指定檔案。

下列範例會從 pubsub-channel.json 檔案建立新的 Pub/Sub 管道：

gcloud beta monitoring channels create --channel-content-from-file="pubsub-channel.json"

如果成功，這個指令會傳回新管道的名稱，例如：

    Created notification channel [projects/[PROJECT_ID]/notificationChannels/1355376463305411567].

詳情請參閱 gcloud beta monitoring channels create 參考資料。

C#

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

static void RestorePolicies(string projectId, string filePath)
{
    var policyClient = AlertPolicyServiceClient.Create();
    var channelClient = NotificationChannelServiceClient.Create();
    List<Exception> exceptions = new List<Exception>();
    var backup = JsonConvert.DeserializeObject<BackupRecord>(
        File.ReadAllText(filePath), new ProtoMessageConverter());
    var projectName = new ProjectName(projectId);
    bool isSameProject = projectId == backup.ProjectId;
    // When a channel is recreated, rather than updated, it will get
    // a new name.  We have to update the AlertPolicy with the new
    // name.  Track the names in this map.
    var channelNameMap = new Dictionary<string, string>();
    foreach (NotificationChannel channel in backup.Channels)
    {
        try
        {
            bool updated = false;
            Console.WriteLine("Updating channel.\n{0}",
                channel.DisplayName);
            // This field is immutable and it is illegal to specify a
            // non-default value (UNVERIFIED or VERIFIED) in the
            // Create() or Update() operations.
            channel.VerificationStatus = NotificationChannel.Types
                .VerificationStatus.Unspecified;
            if (isSameProject)
                try
                {
                    channelClient.UpdateNotificationChannel(
                        null, channel);
                    updated = true;
                }
                catch (Grpc.Core.RpcException e)
                when (e.Status.StatusCode == StatusCode.NotFound)
                { }
            if (!updated)
            {
                // The channel no longer exists.  Recreate it.
                string oldName = channel.Name;
                channel.Name = null;
                var response = channelClient.CreateNotificationChannel(
                    projectName, channel);
                channelNameMap.Add(oldName, response.Name);
            }
        }
        catch (Exception e)
        {
            // If one failed, continue trying to update the others.
            exceptions.Add(e);
        }
    }
    foreach (AlertPolicy policy in backup.Policies)
    {
    }
    if (exceptions.Count > 0)
    {
        throw new AggregateException(exceptions);
    }
}

Node.js

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates clients
const alertClient = new monitoring.AlertPolicyServiceClient();
const notificationClient = new monitoring.NotificationChannelServiceClient();

async function replaceChannels() {
  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'YOUR_PROJECT_ID';
  // const alertPolicyId = '123456789012314';
  // const channelIds = [
  //   'channel-1',
  //   'channel-2',
  //   'channel-3',
  // ];

  const notificationChannels = channelIds.map(id =>
    notificationClient.projectNotificationChannelPath(projectId, id)
  );

  for (const channel of notificationChannels) {
    const updateChannelRequest = {
      updateMask: {
        paths: ['enabled'],
      },
      notificationChannel: {
        name: channel,
        enabled: {
          value: true,
        },
      },
    };
    try {
      await notificationClient.updateNotificationChannel(
        updateChannelRequest
      );
    } catch (err) {
      const createChannelRequest = {
        notificationChannel: {
          name: channel,
          notificationChannel: {
            type: 'email',
          },
        },
      };
      const newChannel =
        await notificationClient.createNotificationChannel(
          createChannelRequest
        );
      notificationChannels.push(newChannel);
    }
  }

  const updateAlertPolicyRequest = {
    updateMask: {
      paths: ['notification_channels'],
    },
    alertPolicy: {
      name: alertClient.projectAlertPolicyPath(projectId, alertPolicyId),
      notificationChannels: notificationChannels,
    },
  };
  const [alertPolicy] = await alertClient.updateAlertPolicy(
    updateAlertPolicyRequest
  );
  console.log(`Updated ${alertPolicy.name}.`);
}
replaceChannels();

Go

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

// restorePolicies updates the project with the alert policies and
// notification channels in r.
func restorePolicies(w io.Writer, projectID string, r io.Reader) error {
	b := backup{}
	if err := json.NewDecoder(r).Decode(&b); err != nil {
		return err
	}
	sameProject := projectID == b.ProjectID

	ctx := context.Background()

	alertClient, err := monitoring.NewAlertPolicyClient(ctx)
	if err != nil {
		return err
	}
	defer alertClient.Close()
	channelClient, err := monitoring.NewNotificationChannelClient(ctx)
	if err != nil {
		return err
	}
	defer channelClient.Close()

	// When a channel is recreated, rather than updated, it will get
	// a new name.  We have to update the AlertPolicy with the new
	// name.  channelNames keeps track of the new names.
	channelNames := make(map[string]string)
	for _, c := range b.Channels {
		fmt.Fprintf(w, "Updating channel %q\n", c.GetDisplayName())
		c.VerificationStatus = monitoringpb.NotificationChannel_VERIFICATION_STATUS_UNSPECIFIED
		updated := false
		if sameProject {
			req := &monitoringpb.UpdateNotificationChannelRequest{
				NotificationChannel: c.NotificationChannel,
			}
			_, err := channelClient.UpdateNotificationChannel(ctx, req)
			if err == nil {
				updated = true
			}
		}
		if !updated {
			req := &monitoringpb.CreateNotificationChannelRequest{
				Name:                "projects/" + projectID,
				NotificationChannel: c.NotificationChannel,
			}
			oldName := c.GetName()
			c.Name = ""
			newC, err := channelClient.CreateNotificationChannel(ctx, req)
			if err != nil {
				return err
			}
			channelNames[oldName] = newC.GetName()
		}
	}

	for _, policy := range b.AlertPolicies {
		fmt.Fprintf(w, "Updating alert %q\n", policy.GetDisplayName())
		policy.CreationRecord = nil
		policy.MutationRecord = nil
		for i, aChannel := range policy.GetNotificationChannels() {
			if c, ok := channelNames[aChannel]; ok {
				policy.NotificationChannels[i] = c
			}
		}
		updated := false
		if sameProject {
			req := &monitoringpb.UpdateAlertPolicyRequest{
				AlertPolicy: policy.AlertPolicy,
			}
			_, err := alertClient.UpdateAlertPolicy(ctx, req)
			if err == nil {
				updated = true
			}
		}
		if !updated {
			req := &monitoringpb.CreateAlertPolicyRequest{
				Name:        "projects/" + projectID,
				AlertPolicy: policy.AlertPolicy,
			}
			if _, err = alertClient.CreateAlertPolicy(ctx, req); err != nil {
				log.Fatal(err)
			}
		}
	}
	fmt.Fprintf(w, "Successfully restored alerts.")
	return nil
}

Java

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

private static Map<String, String> restoreNotificationChannels(
    String projectId, List<NotificationChannel> channels, boolean isSameProject)
    throws IOException {
  Map<String, String> newChannelNames = Maps.newHashMap();
  try (NotificationChannelServiceClient client = NotificationChannelServiceClient.create()) {
    for (NotificationChannel channel : channels) {
      // Update channel name if project ID is different.
      boolean channelUpdated = false;
      if (isSameProject) {
        try {
          NotificationChannel updatedChannel =
              client.updateNotificationChannel(NOTIFICATION_CHANNEL_UPDATE_MASK, channel);
          newChannelNames.put(channel.getName(), updatedChannel.getName());
          channelUpdated = true;
        } catch (Exception e) {
          channelUpdated = false;
        }
      }
      if (!channelUpdated) {
        NotificationChannel newChannel =
            client.createNotificationChannel(
                ProjectName.of(projectId),
                channel.toBuilder().clearName().clearVerificationStatus().build());
        newChannelNames.put(channel.getName(), newChannel.getName());
      }
    }
  }
  return newChannelNames;
}

PHP

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

use Google\Cloud\Monitoring\V3\Client\NotificationChannelServiceClient;
use Google\Cloud\Monitoring\V3\CreateNotificationChannelRequest;
use Google\Cloud\Monitoring\V3\NotificationChannel;

/**
 * @param string $projectId Your project ID
 */
function alert_create_channel(string $projectId): void
{
    $channelClient = new NotificationChannelServiceClient([
        'projectId' => $projectId,
    ]);
    $projectName = 'projects/' . $projectId;

    $channel = new NotificationChannel();
    $channel->setDisplayName('Test Notification Channel');
    $channel->setType('email');
    $channel->setLabels(['email_address' => '[e-mail]']);
    $createNotificationChannelRequest = (new CreateNotificationChannelRequest())
        ->setName($projectName)
        ->setNotificationChannel($channel);

    $channel = $channelClient->createNotificationChannel($createNotificationChannelRequest);
    printf('Created notification channel %s' . PHP_EOL, $channel->getName());
}

Python

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

def restore(project_name, backup_filename):
    """Restore alert policies in a project.

    Arguments:
        project_name (str): The Google Cloud Project to use. The project name
            must be in the format - 'projects/<PROJECT_NAME>'.
        backup_filename (str): Name of the file (along with its path) from
            which the alert policies will be restored.
    """
    print(
        "Loading alert policies and notification channels from {}.".format(
            backup_filename
        )
    )
    record = json.load(open(backup_filename, "rt"))
    is_same_project = project_name == record["project_name"]
    # Convert dicts to AlertPolicies.
    policies_json = [json.dumps(policy) for policy in record["policies"]]
    policies = [
        monitoring_v3.AlertPolicy.from_json(policy_json)
        for policy_json in policies_json
    ]
    # Convert dicts to NotificationChannels
    channels_json = [json.dumps(channel) for channel in record["channels"]]
    channels = [
        monitoring_v3.NotificationChannel.from_json(channel_json)
        for channel_json in channels_json
    ]

    # Restore the channels.
    channel_client = monitoring_v3.NotificationChannelServiceClient()
    channel_name_map = {}

    for channel in channels:
        updated = False
        print("Updating channel", channel.display_name)
        # This field is immutable and it is illegal to specify a
        # non-default value (UNVERIFIED or VERIFIED) in the
        # Create() or Update() operations.
        channel.verification_status = (
            monitoring_v3.NotificationChannel.VerificationStatus.VERIFICATION_STATUS_UNSPECIFIED
        )

        if is_same_project:
            try:
                channel_client.update_notification_channel(notification_channel=channel)
                updated = True
            except google.api_core.exceptions.NotFound:
                pass  # The channel was deleted.  Create it below.

        if not updated:
            # The channel no longer exists.  Recreate it.
            old_name = channel.name
            del channel.name
            new_channel = channel_client.create_notification_channel(
                name=project_name, notification_channel=channel
            )
            channel_name_map[old_name] = new_channel.name

    # Restore the alerts
    alert_client = monitoring_v3.AlertPolicyServiceClient()

    for policy in policies:
        print("Updating policy", policy.display_name)
        # These two fields cannot be set directly, so clear them.
        del policy.creation_record
        del policy.mutation_record

        # Update old channel names with new channel names.
        for i, channel in enumerate(policy.notification_channels):
            new_channel = channel_name_map.get(channel)
            if new_channel:
                policy.notification_channels[i] = new_channel

        updated = False

        if is_same_project:
            try:
                alert_client.update_alert_policy(alert_policy=policy)
                updated = True
            except google.api_core.exceptions.NotFound:
                pass  # The policy was deleted.  Create it below.
            except google.api_core.exceptions.InvalidArgument:
                # Annoying that API throws InvalidArgument when the policy
                # does not exist.  Seems like it should throw NotFound.
                pass  # The policy was deleted.  Create it below.

        if not updated:
            # The policy no longer exists.  Recreate it.
            old_name = policy.name
            del policy.name
            for condition in policy.conditions:
                del condition.name
            policy = alert_client.create_alert_policy(
                name=project_name, alert_policy=policy
            )
        print("Updated", policy.name)

範例：建立 Slack 通知管道

如要為 Slack 應用程式設定通知管道，請按照下列步驟操作：

1. 設定 Slack 應用程式：

   1. 如果沒有 Slack 應用程式，請按照 Slack 參考文件建立應用程式，並安裝至工作區。
   2. 為 Slack 應用程式設定 OAuth 範圍，以支援 chat:write 和 chat:write.public。
   3. 複製應用程式的機器人使用者 OAuth 權杖。

2. 建立檔案，定義通知管道的設定。 加入標籤，其中 auth_token 鍵的值為 Slack 應用程式的機器人使用者 OAuth 權杖。例如：

   {
     "description": "A Slack notification channel",
     "displayName": "Slack",
     "type": "slack",
     "enabled": true,
     "labels": {
       "auth_token": "OAUTH_TOKEN_VALUE",
       "channel_name": "SLACK_CHANNEL_NAME"
     }
   }
   

3. 執行下列指令來建立通知管道：

   gcloud beta monitoring channels create --channel-content-from-file="FILE_NAME"
   

列出專案中的通知管道

如要擷取 Google Cloud 專案中所有的通知管道，請使用 notificationChannels.list 方法。這個方法也支援以 filter 和 orderBy 選項來限制及排序結果；詳情請參閱排序與篩選。

如果您要尋找特定管道且知道管道名稱，則可以使用 notificationChannels.get 方法只擷取這個管道。管道的名稱格式為 projects/[PROJECT_ID]/notificationChannels/[CHANNEL_ID]，例如：

    projects/[PROJECT_ID]/notificationChannels/1355376463305411567

當您擷取管道時，像驗證憑證與 API 金鑰這一類敏感值可能會基於安全理由而模糊處理。 如果您要透過複製現有管道的方式來建立新管道，任何模糊處理的值都需要修正。

gcloud

如要列出 Google Cloud 專案中的所有通知管道，請使用 gcloud beta monitoring channels list 指令：

gcloud beta monitoring channels list

如果成功，list 指令會提供指定專案中所有管道的清單。舉例來說，上述指令可能會傳回包含下列項目的清單：

    ---
    description: E-mail channel created by gcloud as a test
    displayName: test e-mail channel
    enabled: false
    labels:
      email_address: [e-mail]
    name: projects/[PROJECT_ID]/notificationChannels/1355376463305411567
    type: email
    ---
    description: Pub/Sub channel for notifications
    displayName: Notifications
    enabled: true
    labels:
      topic: projects/[PROJECT_ID]/topics/notificationTopic
    name: projects/[PROJECT_ID]/notificationChannels/1355376463305411567
    type: pubsub

如要列出單一管道，請改用 gcloud beta monitoring channels describe，並指定管道名稱。 舉例來說，這個指令會傳回上方清單中顯示的 Pub/Sub 管道：

gcloud beta monitoring channels describe projects/[PROJECT_ID]/notificationChannels/1355376463305411567

詳情請參閱 gcloud beta monitoring channels list 和 describe 參考資料。describe 指令與 API 中的 notificationChannels.get 方法對應。

C#

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

static void ListNotificationChannels(string projectId)
{
    var client = NotificationChannelServiceClient.Create();
    var response = client.ListNotificationChannels(new ProjectName(projectId));
    foreach (NotificationChannel channel in response)
    {
        Console.WriteLine(channel.Name);
        if (channel.DisplayName != null)
        {
            Console.WriteLine(channel.DisplayName);
        }
        Console.WriteLine();
    }
}

Node.js

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.NotificationChannelServiceClient();

async function deleteChannels() {
  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'YOUR_PROJECT_ID';
  // const filter = 'A filter for selecting policies, e.g. description:"cloud"';

  const request = {
    name: client.projectPath(projectId),
    filter,
  };
  const channels = await client.listNotificationChannels(request);
  console.log(channels);
  for (const channel of channels[0]) {
    console.log(`Deleting channel ${channel.displayName}`);
    try {
      await client.deleteNotificationChannel({
        name: channel.name,
      });
    } catch (err) {
      // ignore error
    }
  }
}
deleteChannels();

Go

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

channelClient, err := monitoring.NewNotificationChannelClient(ctx)
if err != nil {
	return err
}
defer channelClient.Close()
channelReq := &monitoringpb.ListNotificationChannelsRequest{
	Name: "projects/" + projectID,
	// Filter:  "", // See https://cloud.google.com/monitoring/api/v3/sorting-and-filtering.
	// OrderBy: "", // See https://cloud.google.com/monitoring/api/v3/sorting-and-filtering.
}
channelIt := channelClient.ListNotificationChannels(ctx, channelReq)
for {
	resp, err := channelIt.Next()
	if err == iterator.Done {
		break
	}
	if err != nil {
		return err
	}
	b.Channels = append(b.Channels, &channel{resp})
}

Java

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

private static List<NotificationChannel> getNotificationChannels(String projectId)
    throws IOException {
  List<NotificationChannel> notificationChannels = Lists.newArrayList();
  try (NotificationChannelServiceClient client = NotificationChannelServiceClient.create()) {
    ListNotificationChannelsPagedResponse listNotificationChannelsResponse =
        client.listNotificationChannels(ProjectName.of(projectId));
    for (NotificationChannel channel : listNotificationChannelsResponse.iterateAll()) {
      notificationChannels.add(channel);
    }
  }
  return notificationChannels;
}

PHP

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

use Google\Cloud\Monitoring\V3\Client\NotificationChannelServiceClient;
use Google\Cloud\Monitoring\V3\ListNotificationChannelsRequest;

/**
 * @param string $projectId Your project ID
 */
function alert_list_channels($projectId)
{
    $projectName = 'projects/' . $projectId;
    $channelClient = new NotificationChannelServiceClient([
        'projectId' => $projectId,
    ]);
    $listNotificationChannelsRequest = (new ListNotificationChannelsRequest())
        ->setName($projectName);

    $channels = $channelClient->listNotificationChannels($listNotificationChannelsRequest);
    foreach ($channels->iterateAllElements() as $channel) {
        printf('Name: %s (%s)' . PHP_EOL, $channel->getDisplayName(), $channel->getName());
    }
}

Python

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

def list_notification_channels(project_name):
    """List alert notification channels in a project.

    Arguments:
        project_name (str): The Google Cloud Project to use. The project name
            must be in the format - 'projects/<PROJECT_NAME>'.
    """

    client = monitoring_v3.NotificationChannelServiceClient()
    channels = client.list_notification_channels(name=project_name)
    print(
        tabulate.tabulate(
            [(channel.name, channel.display_name) for channel in channels],
            ("name", "display_name"),
        )
    )

從專案中刪除通知管道

如要刪除 Google Cloud 專案中的通知管道，請使用 notificationChannels.delete 方法，並提供要刪除的通知管道名稱。頻道的名稱是 NotificationChannel 執行個體中 name 欄位的值，而非 displayName。管道的名稱格式為 projects/[PROJECT_ID]/notificationChannels/[CHANNEL_ID]，例如：

    projects/[PROJECT_ID]/notificationChannels/1355376463305411567

根據預設，如果您嘗試刪除警告政策參照的管道，系統不會刪除該管道。如要強制從快訊政策中移除參照並刪除管道，請將 force 選項設為 true。這個選項會自動從所有參照政策中移除頻道。

gcloud

如要刪除通知管道，請使用 gcloud beta monitoring channels delete，並指定要刪除的管道名稱。舉例來說，下列指令會刪除在另一個範例中建立的 email 管道：

gcloud beta monitoring channels delete projects/[PROJECT_ID]/notificationChannels/1355376463305411567

詳情請參閱 gcloud beta monitoring channels delete 參考資料。

C#

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

using Google.Cloud.Monitoring.V3;
using System;

partial class AlertSnippets
{
    public void DeleteNotificationChannel(
        string channelName = "projects/your-project-id/notificationChannels/123")
    {
        var client = NotificationChannelServiceClient.Create();
        client.DeleteNotificationChannel(
            name: NotificationChannelName.Parse(channelName),
            force: true);
        Console.WriteLine("Deleted {0}.", channelName);
    }
}

Go

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

import (
	"context"
	"fmt"
	"io"

	monitoring "cloud.google.com/go/monitoring/apiv3"
	"cloud.google.com/go/monitoring/apiv3/v2/monitoringpb"
)

// deleteChannel deletes the given channel. channelName should be of the form
// "projects/[PROJECT_ID]/notificationChannels/[CHANNEL_ID]".
func deleteChannel(w io.Writer, channelName string) error {
	ctx := context.Background()

	client, err := monitoring.NewNotificationChannelClient(ctx)
	if err != nil {
		return err
	}
	defer client.Close()

	req := &monitoringpb.DeleteNotificationChannelRequest{
		Name: channelName,
	}

	if err := client.DeleteNotificationChannel(ctx, req); err != nil {
		return fmt.Errorf("DeleteNotificationChannel: %w", err)
	}

	fmt.Fprintf(w, "Deleted channel %q", channelName)
	return nil
}

Java

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

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);
  }
}

PHP

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

use Google\Cloud\Monitoring\V3\Client\NotificationChannelServiceClient;
use Google\Cloud\Monitoring\V3\DeleteNotificationChannelRequest;

/**
 * @param string $projectId Your project ID
 * @param string $channelId
 */
function alert_delete_channel(string $projectId, string $channelId): void
{
    $channelClient = new NotificationChannelServiceClient([
        'projectId' => $projectId,
    ]);
    $channelName = $channelClient->notificationChannelName($projectId, $channelId);
    $deleteNotificationChannelRequest = (new DeleteNotificationChannelRequest())
        ->setName($channelName);

    $channelClient->deleteNotificationChannel($deleteNotificationChannelRequest);
    printf('Deleted notification channel %s' . PHP_EOL, $channelName);
}

Node.js

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates a client
const client = new monitoring.NotificationChannelServiceClient();

async function deleteChannels() {
  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'YOUR_PROJECT_ID';
  // const filter = 'A filter for selecting policies, e.g. description:"cloud"';

  const request = {
    name: client.projectPath(projectId),
    filter,
  };
  const channels = await client.listNotificationChannels(request);
  console.log(channels);
  for (const channel of channels[0]) {
    console.log(`Deleting channel ${channel.displayName}`);
    try {
      await client.deleteNotificationChannel({
        name: channel.name,
      });
    } catch (err) {
      // ignore error
    }
  }
}
deleteChannels();

Python

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

def delete_notification_channels(project_name, channel_ids, force=None):
    """Delete alert notification channels.

    Arguments:
        project_name (str): The Google Cloud Project to use. The project name
            must be in the format - 'projects/<PROJECT_NAME>'.
        channel_ids list(str): List of IDs of notification channels to delete.
        force (bool): If true, the notification channels are deleted regardless
            of its in use by alert policies. If false, channels that are still
            referenced by an existing alerting policy will fail to be deleted.
    """

    channel_client = monitoring_v3.NotificationChannelServiceClient()
    for channel_id in channel_ids:
        channel_name = "{}/notificationChannels/{}".format(project_name, channel_id)
        try:
            channel_client.delete_notification_channel(name=channel_name, force=force)
            print("Channel {} deleted".format(channel_name))
        except ValueError:
            print("The parameters are invalid")
        except Exception as e:
            print("API call failed: {}".format(e))

修改通知管道

如要修改通知管道，請使用 notificationChannels.patch 方法 (在 REST API 中)。其他 API 實作與 Google Cloud CLI 將這個方法稱為 update，而不是 patch。

注意： 您無法使用更新作業更新 verificationStatus 欄位。如要變更這個值，請使用 notificationChannels.verify 方法。

更新作業可以完全取代現有管道，也可以修改欄位子集。舉例來說，您可以啟用及停用頻道。停用管道後，系統就不會再透過該管道傳送通知。 如果變更只是暫時性的，停用管道通常會比從參照該管道的快訊政策中移除管道更方便。

gcloud

如要啟用已停用的通知管道，請使用 gcloud beta monitoring channels update 指令，並提供 --enabled 旗標。下列指令會啟用先前範例中建立的 email 通知管道 (處於停用狀態)：

gcloud beta monitoring channels update projects/[PROJECT_ID]/notificationChannels/1355376463305411567 --enabled

如要停用政策，請使用相同指令並提供 --no-enabled 標記。 詳情請參閱 gcloud beta monitoring channels update 參考資料。update 指令與 REST API 中的 notificationChannels.patch 方法對應。

C#

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

using Google.Cloud.Monitoring.V3;
using Google.Protobuf.WellKnownTypes;
using System;

partial class AlertSnippets
{
    public NotificationChannel EnableNotificationChannel(
        string channelName = "projects/your-project-id/notificationChannels/123")
    {
        var client = NotificationChannelServiceClient.Create();
        NotificationChannel channel = new NotificationChannel();
        channel.Enabled = true;
        channel.Name = channelName;
        var fieldMask = new FieldMask { Paths = { "enabled" } };
        channel = client.UpdateNotificationChannel(
            updateMask: fieldMask,
            notificationChannel: channel);
        Console.WriteLine("Enabled {0}.", channel.Name);
        return channel;
    }
}

Go

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

import (
	"context"
	"fmt"
	"io"

	monitoring "cloud.google.com/go/monitoring/apiv3"
	"cloud.google.com/go/monitoring/apiv3/v2/monitoringpb"
	"github.com/golang/protobuf/ptypes/wrappers"
	"google.golang.org/genproto/protobuf/field_mask"
)

// enableChannel enables the given channel. channelName should be of the form
// "projects/[PROJECT_ID]/notificationChannels/[CHANNEL_ID]".
func enableChannel(w io.Writer, channelName string) error {
	ctx := context.Background()

	client, err := monitoring.NewNotificationChannelClient(ctx)
	if err != nil {
		return err
	}
	defer client.Close()

	req := &monitoringpb.UpdateNotificationChannelRequest{
		UpdateMask: &field_mask.FieldMask{Paths: []string{"enabled"}},
		NotificationChannel: &monitoringpb.NotificationChannel{
			Name:    channelName,
			Enabled: &wrappers.BoolValue{Value: true},
		},
	}

	if _, err := client.UpdateNotificationChannel(ctx, req); err != nil {
		return fmt.Errorf("EnableNotificationChannel: %w", err)
	}

	fmt.Fprintf(w, "Enabled channel %q", channelName)
	return nil
}

Node.js

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

// Imports the Google Cloud client library
const monitoring = require('@google-cloud/monitoring');

// Creates clients
const alertClient = new monitoring.AlertPolicyServiceClient();
const notificationClient = new monitoring.NotificationChannelServiceClient();

async function replaceChannels() {
  /**
   * TODO(developer): Uncomment the following lines before running the sample.
   */
  // const projectId = 'YOUR_PROJECT_ID';
  // const alertPolicyId = '123456789012314';
  // const channelIds = [
  //   'channel-1',
  //   'channel-2',
  //   'channel-3',
  // ];

  const notificationChannels = channelIds.map(id =>
    notificationClient.projectNotificationChannelPath(projectId, id)
  );

  for (const channel of notificationChannels) {
    const updateChannelRequest = {
      updateMask: {
        paths: ['enabled'],
      },
      notificationChannel: {
        name: channel,
        enabled: {
          value: true,
        },
      },
    };
    try {
      await notificationClient.updateNotificationChannel(
        updateChannelRequest
      );
    } catch (err) {
      const createChannelRequest = {
        notificationChannel: {
          name: channel,
          notificationChannel: {
            type: 'email',
          },
        },
      };
      const newChannel =
        await notificationClient.createNotificationChannel(
          createChannelRequest
        );
      notificationChannels.push(newChannel);
    }
  }

  const updateAlertPolicyRequest = {
    updateMask: {
      paths: ['notification_channels'],
    },
    alertPolicy: {
      name: alertClient.projectAlertPolicyPath(projectId, alertPolicyId),
      notificationChannels: notificationChannels,
    },
  };
  const [alertPolicy] = await alertClient.updateAlertPolicy(
    updateAlertPolicyRequest
  );
  console.log(`Updated ${alertPolicy.name}.`);
}
replaceChannels();

Java

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

private static Map<String, String> restoreNotificationChannels(
    String projectId, List<NotificationChannel> channels, boolean isSameProject)
    throws IOException {
  Map<String, String> newChannelNames = Maps.newHashMap();
  try (NotificationChannelServiceClient client = NotificationChannelServiceClient.create()) {
    for (NotificationChannel channel : channels) {
      // Update channel name if project ID is different.
      boolean channelUpdated = false;
      if (isSameProject) {
        try {
          NotificationChannel updatedChannel =
              client.updateNotificationChannel(NOTIFICATION_CHANNEL_UPDATE_MASK, channel);
          newChannelNames.put(channel.getName(), updatedChannel.getName());
          channelUpdated = true;
        } catch (Exception e) {
          channelUpdated = false;
        }
      }
      if (!channelUpdated) {
        NotificationChannel newChannel =
            client.createNotificationChannel(
                ProjectName.of(projectId),
                channel.toBuilder().clearName().clearVerificationStatus().build());
        newChannelNames.put(channel.getName(), newChannel.getName());
      }
    }
  }
  return newChannelNames;
}

PHP

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

use Google\ApiCore\ApiException;
use Google\Cloud\Monitoring\V3\AlertPolicy;
use Google\Cloud\Monitoring\V3\Client\AlertPolicyServiceClient;
use Google\Cloud\Monitoring\V3\Client\NotificationChannelServiceClient;
use Google\Cloud\Monitoring\V3\CreateAlertPolicyRequest;
use Google\Cloud\Monitoring\V3\CreateNotificationChannelRequest;
use Google\Cloud\Monitoring\V3\NotificationChannel;
use Google\Cloud\Monitoring\V3\NotificationChannel\VerificationStatus;
use Google\Cloud\Monitoring\V3\UpdateAlertPolicyRequest;
use Google\Cloud\Monitoring\V3\UpdateNotificationChannelRequest;

/**
 * @param string $projectId Your project ID
 */
function alert_restore_policies(string $projectId): void
{
    $alertClient = new AlertPolicyServiceClient([
        'projectId' => $projectId,
    ]);

    $channelClient = new NotificationChannelServiceClient([
        'projectId' => $projectId,
    ]);

    print('Loading alert policies and notification channels from backup.json.' . PHP_EOL);
    $projectName = 'projects/' . $projectId;
    $record = json_decode((string) file_get_contents('backup.json'), true);
    $isSameProject = $projectName == $record['project_name'];

    # Convert dicts to AlertPolicies.
    $policies = [];
    foreach ($record['policies'] as $policyArray) {
        $policy = new AlertPolicy();
        $policy->mergeFromJsonString((string) json_encode($policyArray));
        $policies[] = $policy;
    }

    # Convert dicts to NotificationChannels
    $channels = [];
    foreach (array_filter($record['channels']) as $channelArray) {
        $channel = new NotificationChannel();
        $channel->mergeFromJsonString((string) json_encode($channelArray));
        $channels[] = $channel;
    }

    # Restore the channels.
    $channelNameMap = [];
    foreach ($channels as $channel) {
        $updated = false;
        printf('Updating channel %s' . PHP_EOL, $channel->getDisplayName());

        # This field is immutable and it is illegal to specify a
        # non-default value (UNVERIFIED or VERIFIED) in the
        # Create() or Update() operations.
        $channel->setVerificationStatus(
            VerificationStatus::VERIFICATION_STATUS_UNSPECIFIED
        );

        if ($isSameProject) {
            try {
                $updateNotificationChannelRequest = (new UpdateNotificationChannelRequest())
                    ->setNotificationChannel($channel);
                $channelClient->updateNotificationChannel($updateNotificationChannelRequest);
                $updated = true;
            } catch (ApiException $e) {
                # The channel was deleted.  Create it below.
                if ($e->getStatus() !== 'NOT_FOUND') {
                    throw $e;
                }
            }
        }

        if (!$updated) {
            # The channel no longer exists.  Recreate it.
            $oldName = $channel->getName();
            $channel->setName('');
            $createNotificationChannelRequest = (new CreateNotificationChannelRequest())
                ->setName($projectName)
                ->setNotificationChannel($channel);
            $newChannel = $channelClient->createNotificationChannel($createNotificationChannelRequest);
            $channelNameMap[$oldName] = $newChannel->getName();
        }
    }

    # Restore the alerts
    foreach ($policies as $policy) {
        printf('Updating policy %s' . PHP_EOL, $policy->getDisplayName());
        # These two fields cannot be set directly, so clear them.
        $policy->clearCreationRecord();
        $policy->clearMutationRecord();

        $notificationChannels = $policy->getNotificationChannels();

        # Update old channel names with new channel names.
        foreach ($notificationChannels as $i => $channel) {
            if (isset($channelNameMap[$channel])) {
                $notificationChannels[$i] = $channelNameMap[$channel];
            }
        }

        $updated = false;
        if ($isSameProject) {
            try {
                $updateAlertPolicyRequest = (new UpdateAlertPolicyRequest())
                    ->setAlertPolicy($policy);
                $alertClient->updateAlertPolicy($updateAlertPolicyRequest);
                $updated = true;
            } catch (ApiException $e) {
                # The policy was deleted.  Create it below.
                if ($e->getStatus() !== 'NOT_FOUND') {
                    throw $e;
                }
            }
        }

        if (!$updated) {
            # The policy no longer exists.  Recreate it.
            $oldName = $policy->getName();
            $policy->setName('');
            foreach ($policy->getConditions() as $condition) {
                $condition->setName('');
            }
            $createAlertPolicyRequest = (new CreateAlertPolicyRequest())
                ->setName($projectName)
                ->setAlertPolicy($policy);
            $policy = $alertClient->createAlertPolicy($createAlertPolicyRequest);
        }
        printf('Updated %s' . PHP_EOL, $policy->getName());
    }
    print('Restored alert policies and notification channels from backup.json.');
}

Python

如要驗證 Monitoring，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

def restore(project_name, backup_filename):
    """Restore alert policies in a project.

    Arguments:
        project_name (str): The Google Cloud Project to use. The project name
            must be in the format - 'projects/<PROJECT_NAME>'.
        backup_filename (str): Name of the file (along with its path) from
            which the alert policies will be restored.
    """
    print(
        "Loading alert policies and notification channels from {}.".format(
            backup_filename
        )
    )
    record = json.load(open(backup_filename, "rt"))
    is_same_project = project_name == record["project_name"]
    # Convert dicts to AlertPolicies.
    policies_json = [json.dumps(policy) for policy in record["policies"]]
    policies = [
        monitoring_v3.AlertPolicy.from_json(policy_json)
        for policy_json in policies_json
    ]
    # Convert dicts to NotificationChannels
    channels_json = [json.dumps(channel) for channel in record["channels"]]
    channels = [
        monitoring_v3.NotificationChannel.from_json(channel_json)
        for channel_json in channels_json
    ]

    # Restore the channels.
    channel_client = monitoring_v3.NotificationChannelServiceClient()
    channel_name_map = {}

    for channel in channels:
        updated = False
        print("Updating channel", channel.display_name)
        # This field is immutable and it is illegal to specify a
        # non-default value (UNVERIFIED or VERIFIED) in the
        # Create() or Update() operations.
        channel.verification_status = (
            monitoring_v3.NotificationChannel.VerificationStatus.VERIFICATION_STATUS_UNSPECIFIED
        )

        if is_same_project:
            try:
                channel_client.update_notification_channel(notification_channel=channel)
                updated = True
            except google.api_core.exceptions.NotFound:
                pass  # The channel was deleted.  Create it below.

        if not updated:
            # The channel no longer exists.  Recreate it.
            old_name = channel.name
            del channel.name
            new_channel = channel_client.create_notification_channel(
                name=project_name, notification_channel=channel
            )
            channel_name_map[old_name] = new_channel.name

    # Restore the alerts
    alert_client = monitoring_v3.AlertPolicyServiceClient()

    for policy in policies:
        print("Updating policy", policy.display_name)
        # These two fields cannot be set directly, so clear them.
        del policy.creation_record
        del policy.mutation_record

        # Update old channel names with new channel names.
        for i, channel in enumerate(policy.notification_channels):
            new_channel = channel_name_map.get(channel)
            if new_channel:
                policy.notification_channels[i] = new_channel

        updated = False

        if is_same_project:
            try:
                alert_client.update_alert_policy(alert_policy=policy)
                updated = True
            except google.api_core.exceptions.NotFound:
                pass  # The policy was deleted.  Create it below.
            except google.api_core.exceptions.InvalidArgument:
                # Annoying that API throws InvalidArgument when the policy
                # does not exist.  Seems like it should throw NotFound.
                pass  # The policy was deleted.  Create it below.

        if not updated:
            # The policy no longer exists.  Recreate it.
            old_name = policy.name
            del policy.name
            for condition in policy.conditions:
                del condition.name
            policy = alert_client.create_alert_policy(
                name=project_name, alert_policy=policy
            )
        print("Updated", policy.name)

查看通知管道記錄

您可以使用記錄檔探索工具查看通知管道錯誤：

1. 前往 Google Cloud 控制台的「Logs Explorer」頁面：

   前往「Logs Explorer」(記錄檔探索工具)

   如果您是使用搜尋列尋找這個頁面，請選取子標題為「Logging」的結果。

2. 輸入並執行查詢。如要查詢通知管道錯誤，請參閱 Cloud Monitoring 查詢。