向 Slack 发送通知

本文档介绍了如何将预算通知发送到 Slack。

预算通常会配置为通过邮件发送通知。但是，邮件并非在任何时候都是您及时了解云费用的最佳方式，尤其是在您的预算非常重要且具有高时效性的情况下。利用程序化通知，您可以将预算消息转发给其他媒介，例如 Slack。

准备工作

在开始之前，您必须先完成以下任务：

  1. 启用 Cloud Billing API
  2. 创建预算
  3. 设置程序化预算通知

设置 Slack 频道和权限

第一步是创建 Slack 工作区以及用于调用 Slack API 的聊天机器人用户令牌。API 令牌可以通过 https://api.slack.com/apps 进行管理。如需查看详细说明，请参阅 Slack 网站上的聊天机器人用户。

配置 Slack 通知。

设置 Cloud Run 函数

  1. 完成创建 Cloud Run 函数中的步骤。确保将触发器类型设置为预算将使用的同一 Pub/Sub 主题。

  2. 添加以下依赖项：

    Node.js

    将以下内容复制到 package.json 中：

    {
  "name": "cloud-functions-billing",
  "private": "true",
  "version": "0.0.1",
  "description": "Examples of integrating Cloud Functions with billing",
  "main": "index.js",
  "engines": {
    "node": ">=16.0.0"
  },
  "scripts": {
    "compute-test": "c8 mocha -p -j 2 test/periodic.test.js --timeout=600000",
    "test": "c8 mocha -p -j 2 test/index.test.js --timeout=5000 --exit"
  },
  "author": "Ace Nassri <anassri@google.com>",
  "license": "Apache-2.0",
  "dependencies": {
    "@google-cloud/billing": "^4.0.0",
    "@google-cloud/compute": "^4.0.0",
    "google-auth-library": "^9.0.0",
    "googleapis": "^143.0.0",
    "slack": "^11.0.1"
  },
  "devDependencies": {
    "@google-cloud/functions-framework": "^3.0.0",
    "c8": "^10.0.0",
    "gaxios": "^6.0.0",
    "mocha": "^10.0.0",
    "promise-retry": "^2.0.0",
    "proxyquire": "^2.1.0",
    "sinon": "^18.0.0",
    "wait-port": "^1.0.4"
  }
}

    Python

    将以下内容复制到 requirements.txt 中：

    slackclient==2.9.4
google-api-python-client==2.131.0

  3. 将以下代码复制到 Cloud Run 函数中，以使用 Slack API 将预算通知发布到 Slack 聊天频道：

    Node.js 

    const slack = require('slack');

// TODO(developer) replace these with your own values
const BOT_ACCESS_TOKEN =
  process.env.BOT_ACCESS_TOKEN || 'xxxx-111111111111-abcdefghidklmnopq';
const CHANNEL = process.env.SLACK_CHANNEL || 'general';

exports.notifySlack = async pubsubEvent => {
  const pubsubAttrs = pubsubEvent.attributes;
  const pubsubData = Buffer.from(pubsubEvent.data, 'base64').toString();
  const budgetNotificationText = `${JSON.stringify(
    pubsubAttrs
  )}, ${pubsubData}`;

  await slack.chat.postMessage({
    token: BOT_ACCESS_TOKEN,
    channel: CHANNEL,
    text: budgetNotificationText,
  });

  return 'Slack notification sent successfully';
};

    Python 

    import base64
import json
import os
import slack
from slack.errors import SlackApiError
# See https://api.slack.com/docs/token-types#bot for more info
BOT_ACCESS_TOKEN = "xxxx-111111111111-abcdefghidklmnopq"
CHANNEL = "C0XXXXXX"

slack_client = slack.WebClient(token=BOT_ACCESS_TOKEN)


def notify_slack(data, context):
    pubsub_message = data

    # For more information, see
    # https://cloud.google.com/billing/docs/how-to/budgets-programmatic-notifications#notification_format
    try:
        notification_attr = json.dumps(pubsub_message["attributes"])
    except KeyError:
        notification_attr = "No attributes passed in"

    try:
        notification_data = base64.b64decode(data["data"]).decode("utf-8")
    except KeyError:
        notification_data = "No data passed in"

    # This is just a quick dump of the budget data (or an empty string)
    # You can modify and format the message to meet your needs
    budget_notification_text = f"{notification_attr}, {notification_data}"

    try:
        slack_client.api_call(
            "chat.postMessage",
            json={"channel": CHANNEL, "text": budget_notification_text},
        )
    except SlackApiError:
        print("Error posting to Slack")

  4. 确保正确设置以下 Slack API postMessage 参数：

    • 聊天机器人用户 OAuth 访问令牌
    • 频道名称

测试函数

如需确保您的函数按预期运行，请按照测试 Cloud Run 函数中的步骤操作。

如果成功，Slack 中会显示一条消息。

后续步骤

查看其他程序化通知示例，了解如何执行以下操作：