您如何在本地测试Azure Queue触发器功能? [英] How do you test Azure Queue trigger functions locally?

问题描述

我创建了

I have created an Azure Functions project and am testing it locally. Below is my code that creates a cloud queue. It then adds id returned from my CarComponent.

[FunctionName("CarDiscovery")]
public static void Run([TimerTrigger("0 */5 * * * *")]TimerInfo myTimer, TraceWriter log)
{
    log.Info($"C# Timer trigger function executed at: {DateTime.Now}");

    var connectionString = "UseDevelopmentStorage=true";
    // Parse the connection string and return a reference to the storage account.
    CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);

    CloudQueueClient queueClient = storageAccount.CreateCloudQueueClient();
    // Retrieve a reference to a container.
    CloudQueue queue = queueClient.GetQueueReference("discovery-queue");

    // Create the queue if it doesn't already exist
    queue.CreateIfNotExists();

    CarComponent cars = new CarComponent();
    var carList = cars.GetActiveCars();

    foreach (var car in carList)
    {
        byte[] toAdd = BitConverter.GetBytes(car.Id);
        CloudQueueMessage message = new CloudQueueMessage(toAdd);  // <-- Put the ID of each metro in the message
        queue.AddMessage(message);
    }
}

当我使用azure存储模拟器启动该功能时，它会成功运行.

When I start the function using the azure storage emulator it runs successfully.

我想创建另一个Azure函数，该函数与可以在本地测试的Queue触发器一起运行.

I would like to create a another azure function that runs with a Queue trigger that I can test locally.

(1)我应该去哪里查看已添加到开发存储中的当前消息?

(1) Where do I go to view the current messages that have been added to development storage?

(2)使用队列触发器创建Azure函数时，我应该指定为连接什么? (请参见下文)

(2) What do I specify as the connection when creating the Azure function with the queue trigger? (see below)

推荐答案

在哪里可以找到队列中的消息

根据本文:

存储模拟器使用本地Microsoft SQL Server实例和本地文件系统来模拟Azure存储服务.默认情况下，存储模拟器使用Microsoft SQL Server 2012 Express LocalDB中的数据库.您可以选择配置存储模拟器以访问SQL Server的本地实例而不是LocalDB实例.

The storage emulator uses a local Microsoft SQL Server instance and the local file system to emulate Azure storage services. By default, the storage emulator uses a database in Microsoft SQL Server 2012 Express LocalDB. You can choose to configure the storage emulator to access a local instance of SQL Server instead of the LocalDB instance.

因此，您需要:

• 安装和配置Azure存储模拟器；
• 启动它；
• 运行时，可通过以下网址访问Queue服务:http://127.0.0.1:10001/<account-name>/<resource-path>

在最坏的情况下，您可以将本地功能绑定到实际的Azure存储队列.

In the worst case, you can bind your local function to real Azure Storage Queue.

用几句话来说:安装VS Tools for Azure Functions；添加本地设置；将QueueTrigger属性添加到函数方法参数中.

In few words: install VS Tools for Azure Functions; add local settings; add QueueTrigger attribute to your function method parameter.

视觉适用于Azure Functions的Studio工具.

创建新的Function项目后，添加 local.settings.json 文件添加到解决方案的根目录，其内容类似:

Once you create a new Function project, add local.settings.json file to the root of your solution with the similar content:

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "AzureWebJobsDashboard": "UseDevelopmentStorage=true",
    "YourQueueConnectionString": "http://127.0.0.1:10001/MyAccount"
  }
}

添加 QueueTrigger 属性.您的Azure Function入口点应类似于:

Add QueueTrigger attribute. Your Azure Function entry point should be like:

[FunctionName("MyQueueFunction")]
public static async Task Run([QueueTrigger("MyQueue", Connection = "YourQueueConnectionString")] string message, TraceWriter log)

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