您现在访问的是微软AZURE全球版技术文档网站,若需要访问由世纪互联运营的MICROSOFT AZURE中国区技术文档网站,请访问 https://docs.azure.cn.

快速入门:使用 Azure CLI 将存储事件路由到 Web 终结点Quickstart: Route storage events to web endpoint with Azure CLI

Azure 事件网格是针对云的事件处理服务。Azure Event Grid is an eventing service for the cloud. 在本文中,请使用 Azure CLI 订阅 Blob 存储事件,然后触发可查看结果的事件。In this article, you use the Azure CLI to subscribe to Blob storage events, and trigger the event to view the result.

通常,你会将事件发送到处理事件数据并执行操作的终结点。Typically, you send events to an endpoint that processes the event data and takes actions. 但是,为了简化本文,你将事件发送到收集并显示消息的 Web 应用。However, to simplify this article, you send the events to a web app that collects and displays the messages.

完成本文所述步骤后,即可看到事件数据已发送到 Web 应用。When you complete the steps described in this article, you see that the event data has been sent to the web app.

查看订阅事件

如果还没有 Azure 订阅,可以在开始前创建一个免费帐户If you don't have an Azure subscription, create a free account before you begin.

打开 Azure Cloud ShellOpen Azure Cloud Shell

Azure Cloud Shell 是免费的交互式 shell,可以使用它运行本文中的操作步骤。Azure Cloud Shell is a free, interactive shell that you can use to run the steps in this article. Cloud Shell 中预安装并配置了常用的 Azure 工具以供你的帐户使用。Common Azure tools are preinstalled and configured in Cloud Shell for you to use with your account. 选择“复制”以复制代码,将其粘贴到 Cloud Shell 中,然后按回车来运行它。Select Copy to copy the code, paste it in Cloud Shell, and then press Enter to run it. 可通过多种方式打开 Cloud Shell:There are a few ways to open Cloud Shell:

选择代码块右上角的“试用”。Select Try It in the upper-right corner of a code block. Azure Cloud Shell 的“试用”示例
在浏览器中打开 Cloud Shell。Open Cloud Shell in your browser. “启动 Azure Cloud Shell”按钮Launch Azure Cloud Shell button
选择 Azure 门户右上角菜单上的“Cloud Shell”按钮。Select the Cloud Shell button on the menu in the upper-right corner of the Azure portal. Azure 门户中的“Cloud Shell”按钮

如果选择在本地安装并使用 CLI,本文需要运行最新版的 Azure CLI(2.0.24 或更高版本)。If you choose to install and use the CLI locally, this article requires that you're running the latest version of Azure CLI (2.0.24 or later). 要查找版本,请运行 az --versionTo find the version, run az --version. 如果需要进行安装或升级,请参阅安装 Azure CLIIf you need to install or upgrade, see Install Azure CLI.

如果不使用 Cloud Shell,则必须先使用 az login 登录。If you aren't using Cloud Shell, you must first sign in using az login.

创建资源组Create a resource group

事件网格主题是 Azure 资源,必须放置在 Azure 资源组中。Event Grid topics are Azure resources, and must be placed in an Azure resource group. 该资源组是在其中部署和管理 Azure 资源的逻辑集合。The resource group is a logical collection into which Azure resources are deployed and managed.

使用 az group create 命令创建资源组。Create a resource group with the az group create command.

下面的示例在 westcentralus 位置创建了一个名为 <resource_group_name> 的资源组。The following example creates a resource group named <resource_group_name> in the westcentralus location. <resource_group_name> 替换为资源组的唯一名称。Replace <resource_group_name> with a unique name for your resource group.

az group create --name <resource_group_name> --location westcentralus

创建存储帐户Create a storage account

可在常规用途 v2 存储帐户和 Blob 存储帐户中使用 Blob 存储事件。Blob storage events are available in general-purpose v2 storage accounts and Blob storage accounts. 常规用途 v2 存储帐户支持所有存储服务(包括 Blob、文件、队列和表)的所有功能。General-purpose v2 storage accounts support all features for all storage services, including Blobs, Files, Queues, and Tables. Blob 存储帐户是一个专用存储帐户,用于将非结构化数据作为 Blob(对象)存储到 Azure 存储中。A Blob storage account is a specialized storage account for storing your unstructured data as blobs (objects) in Azure Storage. Blob 存储帐户类似于常规用途存储帐户,并且具有现在使用的所有卓越的耐用性、可用性、伸缩性和性能功能,包括用于块 blob 和追加 blob 的 100% API 一致性。Blob storage accounts are like general-purpose storage accounts and share all the great durability, availability, scalability, and performance features that you use today including 100% API consistency for block blobs and append blobs. 有关详细信息,请参阅 Azure 存储帐户概述For more information, see Azure storage account overview.

<storage_account_name> 替换为存储帐户的唯一名称,将 <resource_group_name> 替换为此前创建的资源组。Replace <storage_account_name> with a unique name for your storage account, and <resource_group_name> with the resource group you created earlier.

az storage account create \
  --name <storage_account_name> \
  --location westcentralus \
  --resource-group <resource_group_name> \
  --sku Standard_LRS \
  --kind BlobStorage \
  --access-tier Hot

创建消息终结点Create a message endpoint

在订阅主题之前,让我们创建事件消息的终结点。Before subscribing to the topic, let's create the endpoint for the event message. 通常情况下,终结点基于事件数据执行操作。Typically, the endpoint takes actions based on the event data. 为了简化此快速入门,将部署用于显示事件消息的预建的 Web 应用To simplify this quickstart, you deploy a pre-built web app that displays the event messages. 所部署的解决方案包括应用服务计划、应用服务 Web 应用和 GitHub 中的源代码。The deployed solution includes an App Service plan, an App Service web app, and source code from GitHub.

<your-site-name> 替换为 Web 应用的唯一名称。Replace <your-site-name> with a unique name for your web app. Web 应用名称必须唯一,因为它是 DNS 条目的一部分。The web app name must be unique because it's part of the DNS entry.

sitename=<your-site-name>

az group deployment create \
  --resource-group <resource_group_name> \
  --template-uri "https://raw.githubusercontent.com/Azure-Samples/azure-event-grid-viewer/master/azuredeploy.json" \
  --parameters siteName=$sitename hostingPlanName=viewerhost

部署可能需要几分钟才能完成。The deployment may take a few minutes to complete. 部署成功后,请查看 Web 应用以确保它正在运行。After the deployment has succeeded, view your web app to make sure it's running. 在 Web 浏览器中导航到 https://<your-site-name>.azurewebsites.netIn a web browser, navigate to: https://<your-site-name>.azurewebsites.net

应会看到站点上当前未显示任何消息。You should see the site with no messages currently displayed.

启用事件网格资源提供程序Enable Event Grid resource provider

如果以前未在 Azure 订阅中使用过事件网格,则可能需要注册事件网格资源提供程序。If you haven't previously used Event Grid in your Azure subscription, you may need to register the Event Grid resource provider. 运行以下命令,注册提供程序:Run the following command to register the provider:

az provider register --namespace Microsoft.EventGrid

完成注册可能需要一些时间。It may take a moment for the registration to finish. 若要检查状态,请运行:To check the status, run:

az provider show --namespace Microsoft.EventGrid --query "registrationState"

registrationStateRegistered 后,即可继续。When registrationState is Registered, you're ready to continue.

订阅存储帐户Subscribe to your storage account

订阅主题,以告知事件网格要跟踪哪些事件以及要将这些事件发送到哪个位置。You subscribe to a topic to tell Event Grid which events you want to track and where to send those events. 以下示例订阅所创建的存储帐户,并将 Web 应用中的 URL 作为事件通知的终结点传递。The following example subscribes to the storage account you created, and passes the URL from your web app as the endpoint for event notification. <event_subscription_name> 替换为事件订阅的名称。Replace <event_subscription_name> with a name for your event subscription. 对于 <resource_group_name><storage_account_name>,请使用此前创建的值。For <resource_group_name> and <storage_account_name>, use the values you created earlier.

Web 应用的终结点必须包括后缀 /api/updates/The endpoint for your web app must include the suffix /api/updates/.

storageid=$(az storage account show --name <storage_account_name> --resource-group <resource_group_name> --query id --output tsv)
endpoint=https://$sitename.azurewebsites.net/api/updates

az eventgrid event-subscription create \
  --resource-id $storageid \
  --name <event_subscription_name> \
  --endpoint $endpoint

再次查看 Web 应用,并注意现已向该应用发送了订阅验证事件。View your web app again, and notice that a subscription validation event has been sent to it. 选择眼睛图标以展开事件数据。Select the eye icon to expand the event data. 事件网格发送验证事件,以便终结点可以验证它是否想要接收事件数据。Event Grid sends the validation event so the endpoint can verify that it wants to receive event data. Web 应用包含用于验证订阅的代码。The web app includes code to validate the subscription.

查看订阅事件

触发 Blob 存储中的事件Trigger an event from Blob storage

现在,让我们触发一个事件,看事件网格如何将消息分发到终结点。Now, let's trigger an event to see how Event Grid distributes the message to your endpoint. 首先,我们来配置存储帐户的名称和密钥,再创建一个容器,然后创建和上传文件。First, let's configure the name and key for the storage account, then we create a container, then create and upload a file. 同样,对于 <storage_account_name><resource_group_name>,请使用此前创建的值。Again, use the values for <storage_account_name> and <resource_group_name> you created earlier.

export AZURE_STORAGE_ACCOUNT=<storage_account_name>
export AZURE_STORAGE_ACCESS_KEY="$(az storage account keys list --account-name <storage_account_name> --resource-group <resource_group_name> --query "[0].value" --output tsv)"

az storage container create --name testcontainer

touch testfile.txt
az storage blob upload --file testfile.txt --container-name testcontainer --name testfile.txt

现已触发事件,并且事件网格已将消息发送到订阅时配置的终结点。You've triggered the event, and Event Grid sent the message to the endpoint you configured when subscribing. 查看 Web 应用以查看刚刚发送的事件。View your web app to see the event you just sent.

[{
  "topic": "/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/myrg/providers/Microsoft.Storage/storageAccounts/myblobstorageaccount",
  "subject": "/blobServices/default/containers/testcontainer/blobs/testfile.txt",
  "eventType": "Microsoft.Storage.BlobCreated",
  "eventTime": "2017-08-16T20:33:51.0595757Z",
  "id": "4d96b1d4-0001-00b3-58ce-16568c064fab",
  "data": {
    "api": "PutBlockList",
    "clientRequestId": "d65ca2e2-a168-4155-b7a4-2c925c18902f",
    "requestId": "4d96b1d4-0001-00b3-58ce-16568c000000",
    "eTag": "0x8D4E4E61AE038AD",
    "contentType": "text/plain",
    "contentLength": 0,
    "blobType": "BlockBlob",
    "url": "https://myblobstorageaccount.blob.core.windows.net/testcontainer/testblob1.txt",
    "sequencer": "00000000000000EB0000000000046199",
    "storageDiagnostics": {
      "batchId": "dffea416-b46e-4613-ac19-0371c0c5e352"
    }
  },
  "dataVersion": "",
  "metadataVersion": "1"
}]

清理资源Clean up resources

如果计划继续使用此存储帐户和事件订阅,请不要清理在本文中创建的资源。If you plan to continue working with this storage account and event subscription, do not clean up the resources created in this article. 如果不打算继续学习,请使用以下命令删除本文中创建的资源。If you do not plan to continue, use the following command to delete the resources you created in this article.

<resource_group_name> 替换为上面创建的资源组。Replace <resource_group_name> with the resource group you created above.

az group delete --name <resource_group_name>

后续步骤Next steps

了解如何创建主题和事件订阅以后,即可进一步学习 Blob 存储事件以及事件网格的功能:Now that you know how to create topics and event subscriptions, learn more about Blob storage Events and what Event Grid can help you do: