教程:开发适用于 Windows 设备的 IoT Edge 模块Tutorial: Develop IoT Edge modules for Windows devices

使用 Visual Studio 开发代码并将其部署到运行 IoT Edge 的 Windows 设备。Use Visual Studio to develop and deploy code to Windows devices running IoT Edge.

在快速入门中,你已使用 Windows 虚拟机创建了一个 IoT Edge 设备,并通过 Azure 市场部署了一个预生成的模块。In the quickstart, you created an IoT Edge device using a Windows virtual machine and deployed a pre-built module from the Azure Marketplace. 本教程将逐步介绍如何开发你自己的代码并将其部署到 IoT Edge 设备。This tutorial walks through what it takes to develop and deploy your own code to an IoT Edge device. 本教程是学习其他教程的有用先决条件,其他教程将更详细地介绍特定编程语言或 Azure 服务。This tutorial is a useful prerequisite for the other tutorials, which go into more detail about specific programming languages or Azure services.

本教程使用将 C# 模块部署到 Windows 设备的示例。This tutorial uses the example of deploying a C# module to a Windows device. 之所以选择了此示例,原因在于它是最常见的开发方案。This example was chosen because it's the most common development scenario. 如果你希望使用不同的语言进行开发,或者计划将 Azure 服务作为模块来部署,本教程还有助于了解开发工具。If you're interested in developing in a different language, or plan on deploying Azure services as modules, this tutorial will still be helpful to learn about the development tools. 了解开发概念之后,可以选择首选的语言或 Azure 服务深入到详细信息。Once you understand the development concepts, then you can choose your preferred language or Azure service to dive into the details.

本教程介绍如何执行下列操作:In this tutorial, you learn how to:

  • 设置开发计算机。Set up your development machine.
  • 使用适用于 Visual Studio 的 IoT Edge Tools 创建新项目。Use the IoT Edge tools for Visual Studio to create a new project.
  • 将项目生成为容器,并将其存储在 Azure 容器注册表中。Build your project as a container and store it in an Azure container registry.
  • 将代码部署到 IoT Edge 设备。Deploy your code to an IoT Edge device.

如果没有 Azure 订阅,可在开始前创建一个试用帐户If you don't have an Azure subscription, create a trial account before you begin.

关键概念Key concepts

本教程将逐步讲解 IoT Edge 模块的开发。This tutorial walks through the development of an IoT Edge module. IoT Edge 模块(有时简称为“模块”)是包含可执行代码的容器。 An IoT Edge module, or sometimes just module for short, is a container that contains executable code. 可将一个或多个模块部署到 IoT Edge 设备。You can deploy one or more modules to an IoT Edge device. 模块执行特定的任务,例如,从传感器引入数据、执行数据分析或数据清理操作,或者将消息发送到 IoT 中心。Modules perform specific tasks like ingesting data from sensors, performing data analytics or data cleaning operations, or sending messages to an IoT hub. 有关详细信息,请参阅了解 Azure IoT Edge 模块For more information, see Understand Azure IoT Edge modules.

开发 IoT Edge 模块时,必须了解开发计算机与该模块最终要部署到的目标 IoT Edge 设备之间的差异。When developing IoT Edge modules, it's important to understand the difference between the development machine and the target IoT Edge device where the module will eventually be deployed. 生成的用于保存模块代码的容器必须与目标设备的操作系统 (OS) 相匹配。 The container that you build to hold your module code must match the operating system (OS) of the target device. 对于 Windows 容器开发,此概念更为简单,因为 Windows 容器仅在 Windows 操作系统上运行。For Windows container development, this concept is simpler because Windows containers only run on Windows operating systems. 但是,举例而言,可以使用 Windows 开发计算机来生成适用于 Linux IoT Edge 设备的模块。But you could, for example, use your Windows development machine to build modules for Linux IoT Edge devices. 在这种情况下,必须确保开发计算机运行的是 Linux 容器。In that scenario, you'd have to make sure that your development machine was running Linux containers. 在学习本教程的过程中,请注意开发计算机 OS 与容器 OS 之间的差异。 As you go through this tutorial, keep in mind the difference between development machine OS and the container OS.

本教程面向运行 IoT Edge 的 Windows 设备。This tutorial targets Windows devices running IoT Edge. Windows IoT Edge 设备使用 Windows 容器。Windows IoT Edge devices use Windows containers. 我们建议使用 Visual Studio 进行 Windows 设备开发,这也是本教程将使用的工具。We recommend using Visual Studio to develop for Windows devices, so that's what this tutorial will use. 也可以使用 Visual Studio Code,不过,这两个工具之间存在支持方面的差异。You can use Visual Studio Code as well, although there are differences in support between the two tools.

下表列出 Visual Studio Code 和 Visual Studio 支持的 Windows 容器开发方案。The following table lists the supported development scenarios for Windows containers in Visual Studio Code and Visual Studio.

Visual Studio CodeVisual Studio Code Visual Studio 2017/2019Visual Studio 2017/2019
Azure 服务Azure services Azure FunctionsAzure Functions
Azure 流分析Azure Stream Analytics
语言Languages C#(不支持调试)C# (debugging not supported) CC
C#C#
详细信息More information 适用于 Visual Studio Code 的 Azure IoT EdgeAzure IoT Edge for Visual Studio Code 适用于 Visual Studio 2017 的 Azure IoT Edge Tools适用于 Visual Studio 2019 的 Azure IoT Edge ToolsAzure IoT Edge Tools for Visual Studio 2017, Azure IoT Edge Tools for Visual Studio 2019

先决条件Prerequisites

一台开发计算机:A development machine:

  • 装有 1809 更新或更高版本的 Windows 10。Windows 10 with 1809 update or newer.
  • 可以根据开发偏好,使用自己的计算机或虚拟机。You can use your own computer or a virtual machine, depending on your development preferences.
  • 安装 GitInstall Git.

Windows 上的一个 Azure IoT Edge 设备:An Azure IoT Edge device on Windows:

  • 我们建议不要在开发计算机上运行 IoT Edge,而是使用独立的设备。We recommend that you don't run IoT Edge on your development machine, but instead use a separate device. 分开使用开发计算机和 IoT Edge 设备可以更准确地反映真实的部署方案,并且有助于直接体现不同的概念。This distinction between development machine and IoT Edge device more accurately mirrors a true deployment scenario, and helps to keep the different concepts straight.
  • 如果没有另一个可用的设备,请参考快速入门文章使用 Windows 虚拟机在 Azure 中创建一个 IoT Edge 设备。If you don't have a second device available, use the quickstart article to create an IoT Edge device in Azure with a Windows virtual machine.

云资源:Cloud resources:

  • Azure 中的免费或标准层 IoT 中心A free or standard-tier IoT hub in Azure.

安装容器引擎Install container engine

IoT Edge 模块打包为容器,因此,需要在开发计算机上安装一个容器引擎用于生成和管理容器。IoT Edge modules are packaged as containers, so you need a container engine on your development machine to build and manage the containers. 我们建议使用 Docker Desktop 进行开发,由于它包含许多的功能,是非常流行的容器引擎。We recommend using Docker Desktop for development because of its many features and popularity as a container engine. 在 Windows 计算机上使用 Docker Desktop 可以在 Linux 容器与 Windows 容器之间切换,以便轻松地为不同类型的 IoT Edge 设备开发模块。With Docker Desktop on a Windows computer, you can switch between Linux containers and Windows containers so that you can easily develop modules for different types of IoT Edge devices.

参考 Docker 文档在开发计算机上安装:Use the Docker documentation to install on your development machine:

安装 Visual Studio 和工具Set up Visual Studio and tools

适用于 Visual Studio 的 IoT 扩展有助于开发 IoT Edge 模块。The IoT extensions for Visual Studio help you to develop IoT Edge modules. 这些扩展提供项目模板、自动创建部署清单,并可让你监视和管理 IoT Edge 设备。These extensions provide project templates, automate the creation of the deployment manifest, and allow you to monitor and manage IoT Edge devices. 在本部分,你将安装 Visual Studio 和 IoT Edge 扩展,然后设置 Azure 帐户以从 Visual Studio 内部管理 IoT 中心资源。In this section, you install Visual Studio and the IoT Edge extension, then set up your Azure account to manage IoT Hub resources from within Visual Studio.

本教程讲解适用于 Visual Studio 2019 的开发步骤。This tutorial teaches the development steps for Visual Studio 2019. 如果你使用的是 Visual Studio 2017(15.7 或更高版本),则步骤非常相似。If you are using Visual Studio 2017 (version 15.7 or higher), the steps are very similar. 如果你偏向于使用 Visual Studio Code,请参阅使用 Visual Studio Code 开发和调试 Azure IoT Edge 的模块中的说明。If you would rather use Visual Studio Code, refer to the instructions in Use Visual Studio Code to develop and debug modules for Azure IoT Edge.

  1. 在开发计算机上准备 Visual Studio 2019。Prepare Visual Studio 2019 on your development machine.

    • 如果开发计算机上尚未安装 Visual Studio,请安装 Visual Studio 2019 及以下工作负荷:If you don't already have Visual Studio on your development machine, Install Visual Studio 2019 with the following workloads:

    • Azure 开发Azure development

    • 使用 C++ 的桌面开发Desktop development with C++

    • .NET Core 跨平台开发.NET Core cross-platform development

    • 如果开发计算机上确实已有 Visual Studio 2019,请按照修改 Visual Studio 中的步骤添加所需的工作负荷。If you do already have Visual Studio 2019 on your development machine, follow the steps in Modify Visual Studio to add the required workloads.

  2. 下载并安装适用于 Visual Studio 2019 的 Azure IoT Edge Tools 扩展。Download and install the Azure IoT Edge Tools extension for Visual Studio 2019.

    如果使用的是 Visual Studio 2017(15.7 或更高版本),请下载并安装适用于 Visual Studio 2017 的 Azure IoT Edge 工具If you are using Visual Studio 2017 (version 15.7 or higher), download and install the Azure IoT Edge Tools for Visual Studio 2017.

  3. 安装完成后,打开 Visual Studio 2019 并选择“在没有代码的情况下继续”。 When your installations are complete, open Visual Studio 2019 and select Continue without code.

  4. 选择“视图” > “Cloud Explorer”。 Select View > Cloud Explorer.

  5. 在 Cloud Explorer 中选择个人资料图标并登录到 Azure 帐户(如果尚未登录)。Select the profile icon in the cloud explorer and sign in to your Azure account if you aren't signed in already.

  6. 登录后,系统会列出你的 Azure 订阅。Once you sign in, your Azure subscriptions are listed. 展开包含你的 IoT 中心的订阅。Expand the subscription that has your IoT hub.

  7. 在该订阅下,依次展开“IoT 中心”和你的 IoT 中心 。Under your subscription, expand IoT Hubs then your IoT hub. 应会看到 IoT 设备的列表,并可以使用 Cloud Explorer 对其进行管理。You should see a list of your IoT devices, and can use this explorer to manage them.

    在 Cloud Explorer 中访问 IoT 中心资源

创建容器注册表Create a container registry

本教程将使用 Azure IoT Tools 扩展来生成模块并从文件创建容器映像In this tutorial, you use the Azure IoT Tools extension to build a module and create a container image from the files. 然后将该映像推送到用于存储和管理映像的注册表Then you push this image to a registry that stores and manages your images. 最后,从注册表部署在 IoT Edge 设备上运行的映像。Finally, you deploy your image from your registry to run on your IoT Edge device.

可以使用任意兼容 Docker 的注册表来保存容器映像。You can use any Docker-compatible registry to hold your container images. 两个常见 Docker 注册表服务分别是 Azure 容器注册表Docker 中心Two popular Docker registry services are Azure Container Registry and Docker Hub. 本教程使用 Azure 容器注册表。This tutorial uses Azure Container Registry.

如果还没有容器注册表,请执行以下步骤,以便在 Azure 中创建一个新的:If you don't already have a container registry, follow these steps to create a new one in Azure:

  1. Azure 门户中,选择“创建资源” > “容器” > “容器注册表”。In the Azure portal, select Create a resource > Containers > Container Registry.

  2. 提供以下值,以便创建容器注册表:Provide the following values to create your container registry:

    字段Field Value
    注册表名称Registry name 提供唯一名称。Provide a unique name.
    订阅Subscription 从下拉列表中选择“订阅”。Select a subscription from the drop-down list.
    资源组Resource group 建议对在 IoT Edge 快速入门和教程中创建的所有测试资源使用同一资源组。We recommend that you use the same resource group for all of the test resources that you create during the IoT Edge quickstarts and tutorials. 例如,IoTEdgeResourcesFor example, IoTEdgeResources.
    位置Location 选择靠近你的位置。Choose a location close to you.
    管理员用户Admin user 设置为“启用”。Set to Enable.
    SKUSKU 选择“基本”。Select Basic.
  3. 选择“创建”。Select Create.

  4. 创建容器注册表后,请浏览到其中,然后选择“访问密钥”。After your container registry is created, browse to it, and then select Access keys.

  5. 复制“登录服务器”、“用户名”和“密码”的值,然后将其存储在某个方便的位置。Copy the values for Login server, Username, and Password and save them somewhere convenient. 本教程自始至终会用到这些值来访问容器注册表。You use these values throughout this tutorial to provide access to the container registry.

    为容器注册表复制登录服务器、用户名和密码

创建新的模块项目Create a new module project

Azure IoT Edge Tools 扩展为 Visual Studio 中支持的所有 IoT Edge 模块语言提供项目模板。The Azure IoT Edge Tools extension provides project templates for all supported IoT Edge module languages in Visual Studio. 这些模板包含将工作模块部署到测试 IoT Edge 所需的所有文件和代码,或者提供一个起点让你使用自己的业务逻辑自定义模板。These templates have all the files and code that you need to deploy a working module to test IoT Edge, or give you a starting point to customize the template with your own business logic.

  1. 选择“文件” > “新建” > “项目...” Select File > New > Project...

  2. 在“新建项目”窗口中,搜索“IoT Edge” ,然后选择“Azure IoT Edge (Windows amd64)”项目 。In the new project window, search for IoT Edge and choose the Azure IoT Edge (Windows amd64) project. 单击“下一步” 。Click Next.

    创建新的 Azure IoT Edge 项目

  3. 在“配置新项目”窗口中,重命名项目和解决方案,使名称具有描述性,例如 CSharpTutorialAppIn the configure your new project window, rename the project and solution to something descriptive like CSharpTutorialApp. 单击“创建”以创建项目。 Click Create to create the project.

    配置新的 Azure IoT Edge 项目

  4. 在“添加模块”窗口中,使用下列值配置项目:In the Add Module window, configure your project with the following values:

    字段Field ValueValue
    Visual Studio 模板Visual Studio Template 选择“C# 模块”。 Select C# Module.
    模块名称Module Name 接受默认的 IotEdgeModule1Accept the default IotEdgeModule1.
    存储库 URLRepository Url 映像存储库包含容器注册表的名称和容器映像的名称。An image repository includes the name of your container registry and the name of your container image. 系统已基于模块项目名称值预先填充容器映像。Your container image is prepopulated from the module project name value. localhost:5000 替换为 Azure 容器注册表中的登录服务器值。Replace localhost:5000 with the login server value from your Azure container registry. 可以在 Azure 门户的容器注册表的“概览”页中检索登录服务器。You can retrieve the login server from the Overview page of your container registry in the Azure portal.

    最终的映像存储库看起来类似于 <registry name>.azurecr.cn/iotedgemodule1。The final image repository looks like <registry name>.azurecr.cn/iotedgemodule1.

    配置目标设备、模块类型和容器注册表的项目

  5. 选择“添加” 以创建模块。Select Add to create the module.

新项目载入到 Visual Studio 窗口中后,请花费片刻时间来熟悉它所创建的文件:Once your new project loads in the Visual Studio window, take a moment to familiarize yourself with the files that it created:

  • 一个名为 CSharpTutorialApp 的 IoT Edge 项目。An IoT Edge project called CSharpTutorialApp.
    • Modules 文件夹包含指向项目中模块的指针。The Modules folder contains pointers to the modules included in the project. 在本例中,该模块应该只是 IoTEdgeModule1。In this case, it should be just IoTEdgeModule1.
    • deployment.template.json 文件帮助你创建部署清单的模板。The deployment.template.json file is a template to help you create a deployment manifest. 部署清单文件确切地定义要在设备上部署的模块、模块的配置方式,以及它们如何相互通信以及与云通信。 A deployment manifest is a file that defines exactly which modules you want deployed on a device, how they should be configured, and how they can communicate with each other and the cloud.
  • 名为 IoTEdgeModule1 的 IoT Edge 模块项目。An IoT Edge module project called IoTEdgeModule1.
    • program.cs 文件中包含项目模板附带的默认 C# 模块代码。The program.cs file contains the default C# module code that comes with the project template. 默认模块从源中接收输入,并将其传递给 IoT 中心。The default module takes input from a source and passes it along to IoT Hub.
    • module.json 文件包含有关模块的详细信息,包括完整的映像存储库、映像版本,以及每个受支持平台使用的 Dockerfile。The module.json file hold details about the module, including the full image repository, image version, and which Dockerfile to use for each supported platform.

为 IoT Edge 代理提供注册表凭据Provide your registry credentials to the IoT Edge agent

IoT Edge 运行时需要使用注册表凭据将容器映像提取到 IoT Edge 设备中。The IoT Edge runtime needs your registry credentials to pull your container images onto the IoT Edge device. 请将这些凭据添加到部署模板中。Add these credentials to the deployment template.

  1. 打开 deployment.template.json 文件。Open the deployment.template.json file.

  2. 在 $edgeAgent 所需属性中找到 registryCredentials 属性。Find the registryCredentials property in the $edgeAgent desired properties.

  3. 使用你的凭据用以下格式更新该属性:Update the property with your credentials, following this format:

    "registryCredentials": {
      "<registry name>": {
        "username": "<username>",
        "password": "<password>",
        "address": "<registry name>.azurecr.cn"
      }
    }
    
  4. 保存 deployment.template.json 文件。Save the deployment.template.json file.

查看示例代码Review the sample code

创建的解决方案模板包含 IoT Edge 模块的示例代码。The solution template that you created includes sample code for an IoT Edge module. 此示例模块只会接收然后传递消息。This sample module simply receives messages and then passes them on. 管道功能演示了 IoT Edge 中的一个与模块相互通信方式相关的重要概念。The pipeline functionality demonstrates an important concept in IoT Edge, which is how modules communicate with each other.

每个模块可以在其代码中声明多个输入和输出队列。 Each module can have multiple input and output queues declared in their code. 设备上运行的 IoT Edge 中心将消息从一个模块的输出路由到一个或多个模块的输入。The IoT Edge hub running on the device routes messages from the output of one module into the input of one or more modules. 用于声明输入和输出的具体语言各不相同,但在所有模块中的概念是相同的。The specific language for declaring inputs and outputs varies between languages, but the concept is the same across all modules. 有关模块间路由的详细信息,请参阅声明路由For more information about routing between modules, see Declare routes.

项目模板附带的示例 C# 代码使用适用于 .NET 的 IoT 中心 SDK 中的 ModuleClient 类The sample C# code that comes with the project template uses the ModuleClient Class from the IoT Hub SDK for .NET.

  1. program.cs 文件中,找到 SetInputMessageHandlerAsync 方法。In the program.cs file, find the SetInputMessageHandlerAsync method.

  2. SetInputMessageHandlerAsync 方法会设置一个输入队列,用来接收传入消息。The SetInputMessageHandlerAsync method sets up an input queue to receive incoming messages. 查看此方法,并了解它如何初始化名为 input1 的输入队列。Review this method and see how it initializes an input queue called input1.

    在 SetInputMessageHandlserAsync 构造函数中找到输入名称

  3. 接下来,找到 SendEventAsync 方法。Next, find the SendEventAsync method.

  4. SendEventAsync 方法会处理收到的消息,并设置一个输出队列,用来传递这些消息。The SendEventAsync method processes received messages and sets up an output queue to pass them along. 查看此方法,可以看到它会初始化名为 output1 的输出队列。Review this method and see that it initializes an output queue called output1.

    在 SendEventAsync 构造函数中找到输出名称

  5. 打开 deployment.template.json 文件。Open the deployment.template.json file.

  6. 查找 $edgeAgent 所需属性的 modules 属性。Find the modules property of the $edgeAgent desired properties.

    此处应会列出两个模块。There should be two modules listed here. 第一个模块是 SimulatedTemperatureSensor,该模块默认包含在所有模板中,提供可用于测试模块的模拟温度数据。The first is SimulatedTemperatureSensor, which is included in all the templates by default to provide simulated temperature data that you can use to test your modules. 第二个模块是作为此项目的一部分创建的 IotEdgeModule1 模块。The second is the IotEdgeModule1 module that you created as part of this project.

    此模块属性声明要将哪些模块包含到设备部署中。This modules property declares which modules should be included in the deployment to your device or devices.

  7. 找到 $edgeHub 所需属性的 routes 属性。Find the routes property of the $edgeHub desired properties.

    IoT Edge 中心模块的某个函数可在部署中的所有模块之间路由消息。One of the functions if the IoT Edge hub module is to route messages between all the modules in a deployment. 查看 routes 属性中的值。Review the values in the routes property. 第一个路由 IotEdgeModule1ToIoTHub 使用通配符 ( * ) 将来自任何输出队列的任何消息包含到 IotEdgeModule1 模块中。The first route, IotEdgeModule1ToIoTHub, uses a wildcard character (*) to include any message coming from any output queue in the IotEdgeModule1 module. 这些消息进入 $upstream(用于指示 IoT 中心的保留名称)。These messages go into $upstream, which is a reserved name that indicates IoT Hub. 第二个路由 sensorToIotEdgeModule1 接收来自 SimulatedTemperatureSensor 模块的消息,并将其路由到 IotEdgeModule1 模块的 input1 输入队列 。The second route, sensorToIotEdgeModule1, takes messages coming from the SimulatedTemperatureSensor module and routes them to the input1 input queue of the IotEdgeModule1 module.

    在 deployment.template.json 中查看路由

生成并推送解决方案Build and push your solution

现已查看模块代码和部署模板,并了解了一些重要的部署概念。You've reviewed the module code and the deployment template to understand some key deployment concepts. 现在,已准备好生成 IotEdgeModule1 容器映像并将其推送到容器注册表。Now, you're ready to build the IotEdgeModule1 container image and push it to your container registry. 借助适用于 Visual Studio 的 IoT Tools 扩展,此步骤还会根据模板文件中的信息和解决方案文件中的模块信息生成部署清单。With the IoT tools extension for Visual Studio, this step also generates the deployment manifest based on the information in the template file and the module information from the solution files.

登录到 DockerSign in to Docker

向开发计算机上的 Docker 提供容器注册表凭据,以便它可以推送要存储在注册表中的容器映像。Provide your container registry credentials to Docker on your development machine so that it can push your container image to be stored in the registry.

  1. 打开 PowerShell 或命令提示符。Open PowerShell or a command prompt.

  2. 使用创建注册表后保存的 Azure 容器注册表凭据登录到 Docker。Sign in to Docker with the Azure container registry credentials that you saved after creating the registry.

    docker login -u <ACR username> -p <ACR password> <ACR login server>
    

    可能会出现一条安全警告,其中建议使用 --password-stdinYou may receive a security warning recommending the use of --password-stdin. 这条最佳做法是针对生产场景建议的,这超出了本教程的范畴。While that best practice is recommended for production scenarios, it's outside the scope of this tutorial. 有关详细信息,请参阅 docker login 参考。For more information, see the docker login reference.

生成并推送Build and push

现在,开发计算机以及 IoT Edge 设备都可以访问你的容器注册表。Your development machine now has access to your container registry, and your IoT Edge devices will too. 接下来,可将项目代码转换为容器映像。It's time to turn the project code into a container image.

  1. 右键单击 CSharpTutorialApp 项目文件夹,然后选择“生成并推送 IoT Edge 模块” 。Right-click the CSharpTutorialApp project folder and select Build and Push IoT Edge Modules.

    生成并推送 IoT Edge 模块

    “生成并推送”命令会启动三项操作。The build and push command starts three operations. 首先,它在解决方案中创建名为 config 的新文件夹,用于保存基于部署模板和其他解决方案文件中的信息生成的完整部署清单。First, it creates a new folder in the solution called config that holds the full deployment manifest, built out of information in the deployment template and other solution files. 其次,它会运行 docker build,以基于目标体系结构的相应 dockerfile 生成容器映像。Second, it runs docker build to build the container image based on the appropriate dockerfile for your target architecture. 然后,它会运行 docker push,以将映像存储库推送到容器注册表。Then, it runs docker push to push the image repository to your container registry.

    此过程在首次运行时可能需要花费几分钟时间,但下一次运行这些命令时可以更快地完成。This process may take several minutes the first time, but is faster the next time that you run the commands.

  2. 打开新建的 config 文件夹中的 deployment.windows-amd64.json 文件。Open the deployment.windows-amd64.json file in the newly created config folder. (config 文件夹可能未显示在 Visual Studio 中的解决方案资源管理器中。(The config folder may not appear in the Solution Explorer in Visual Studio. 如果是这样,请在解决方案资源管理器任务栏中选择“显示所有文件”图标。) If that's the case, select the Show all files icon in the Solution Explorer taskbar.)

  3. 找到 IotEdgeModule1 节的 image 参数。Find the image parameter of the IotEdgeModule1 section. 请注意,该映像包含完整的映像存储库,其中附带了来自 module.json 文件的名称、版本和体系结构标记。Notice that the image contains the full image repository with the name, version, and architecture tag from the module.json file.

  4. 打开 IotEdgeModule1 文件夹中的 module.json 文件。Open the module.json file in the IotEdgeModule1 folder.

  5. 更改模块映像的版本号。Change the version number for the module image. (是 version 而不是 $schema-version。)例如,将修补程序版本号递增为 0.0.2,就如同我们在模块代码中做了细微的修复一样。(The version, not the $schema-version.) For example, increment the patch version number to 0.0.2 as though we had made a small fix in the module code.

    Tip

    模块版本启用版本控制,并可让你在将更新部署到生产环境之前,在少量的设备上测试更改。Module versions enable version control, and allow you to test changes on a small set of devices before deploying updates to production. 如果在生成和推送之前不递增模块版本,则会覆盖容器注册表中的存储库。If you don't increment the module version before building and pushing, then you overwrite the repository in your container registry.

  6. 保存对 module.json 文件所做的更改。Save your changes to the module.json file.

  7. 再次右键单击 CSharpTutorialApp 项目文件夹,然后再次选择“生成并推送 IoT Edge 模块” 。Right-click the CSharpTutorialApp project folder again, and select Build and Push IoT Edge modules again.

  8. 再次打开 deployment.windows-amd64.json 文件。Open the deployment.windows-amd64.json file again. 请注意,再次运行“生成并推送”命令时未创建新文件,Notice that a new file wasn't created when you ran the build and push command again. 而是更新了同一文件以反映更改。Rather, the same file was updated to reflect the changes. IotEdgeModule1 映像现在指向容器的版本 0.0.2。The IotEdgeModule1 image now points to the 0.0.2 version of the container. 在部署清单中做出此项更改的目的是告知 IoT Edge 设备有新的模块版本可供提取。This change in the deployment manifest is how you tell the IoT Edge device that there's a new version of a module to pull.

  9. 若要进一步验证“生成并推送”命令执行了哪些操作,请转到 Azure 门户并导航到你的容器注册表。To further verify what the build and push command did, go to the Azure portal and navigate to your container registry.

  10. 在该容器注册表中,依次选择“存储库”、“iotedgemodule1”。 In your container registry, select Repositories then iotedgemodule1. 验证映像的两个版本是否已推送到注册表。Verify that both versions of the image were pushed to the registry.

    查看容器注册表中的两个映像版本

故障排除Troubleshoot

如果在生成和推送模块映像时遇到错误,这些错误往往与开发计算机上的 Docker 配置相关。If you encounter errors when building and pushing your module image, it often has to do with Docker configuration on your development machine. 使用以下提问来检查配置:Use the following checks to review your configuration:

  • 是否使用从容器注册表复制的凭据运行了 docker login 命令?Did you run the docker login command using the credentials that you copied from your container registry? 这些凭据不同于用来登录到 Azure 的凭据。These credentials are different than the ones that you use to sign in to Azure.
  • 你的容器存储库是否正确?Is your container repository correct? 存储库中是否包含正确的容器注册表名称和模块名称?Does it have your correct container registry name and your correct module name? 打开 IotEdgeModule1 文件夹中的 module.json 文件进行检查。Open the module.json file in the IotEdgeModule1 folder to check. 存储库值应类似于 <注册表名称>.azurecr.cn/iotedgemodule1The repository value should look like <registry name>.azurecr.cn/iotedgemodule1.
  • 如果为模块使用的名称不是 IotEdgeModule1,使用的名称是否在整个解决方案中一致?If you used a different name than IotEdgeModule1 for your module, is that name consistent throughout the solution?
  • 计算机运行的容器是否与正在生成的容器的类型相同?Is your machine running the same type of containers that you're building? 本教程适用于 Windows IoT Edge 设备,因此,Visual Studio 文件应包含 windows-amd64 扩展,Docker Desktop 应该运行 Windows 容器。This tutorial is for Windows IoT Edge devices, so your Visual Studio files should have the windows-amd64 extension, and Docker Desktop should be running Windows containers.

将模块部署到设备Deploy modules to device

确认生成的容器映像已存储在容器注册表中之后,现在可以将其部署到设备。You verified that the built container images are stored in your container registry, so it's time to deploy them to a device. 请确保 IoT Edge 设备已启动并正在运行。Make sure that your IoT Edge device is up and running.

  1. 在 Visual Studio 中打开 Cloud Explorer,并展开 IoT 中心的详细信息。Open the Cloud Explorer in Visual Studio and expand the details for your IoT hub.

  2. 选择要部署到的设备的名称。Select the name of the device that you want to deploy to. 在“操作”列表中,选择“创建部署”。 In the Actions list, select Create Deployment.

    为单个设备创建部署

  3. 在文件资源管理器,导航到项目的 config 文件夹,然后选择“deployment.windows-amd64.json”文件。 In the file explorer, navigate to the config folder of your project and select the deployment.windows-amd64.json file. 此文件通常位于 C:\Users\<username>\source\repos\CSharpTutorialApp\CSharpTutorialApp\config\deployment.windows-amd64.jsonThis file is often located at C:\Users\<username>\source\repos\CSharpTutorialApp\CSharpTutorialApp\config\deployment.windows-amd64.json

    不要使用 deployment.template.json 文件,因为其中不包含完整模块映像的值。Do not use the deployment.template.json file, which doesn't have the full module image values in it.

  4. 在 Cloud Explorer 中展开 IoT Edge 设备的详细信息,以查看设备上的模块。Expand the details for your IoT Edge device in the Cloud Explorer to see the modules on your device.

  5. 使用“刷新”按钮更新设备状态,以查看 SimulatedTemperatureSensor 和 IotEdgeModule1 模块是否已部署到设备 。Use the Refresh button to update the device status to see that the SimulatedTemperatureSensor and IotEdgeModule1 modules are deployed your device.

    查看 IoT Edge 设备上运行的模块

查看来自设备的消息View messages from device

IotEdgeModule1 代码通过其输入队列接收消息,然后通过其输出队列传递消息。The IotEdgeModule1 code receives messages through its input queue and passes them along through its output queue. 部署清单声明了将消息从 SimulatedTemperatureSensor 传递到 IotEdgeModule1,再将消息从 IotEdgeModule1 转发到 IoT 中心的路由。The deployment manifest declared routes that passed messages from SimulatedTemperatureSensor to IotEdgeModule1, and then forwarded messages from IotEdgeModule1 to IoT Hub. 使用适用于 Visual Studio 的 Azure IoT Edge Tools 可以查看单个设备发出的已抵达 IoT 中心的消息。The Azure IoT Edge tools for Visual Studio allow you to see messages as they arrive at IoT Hub from your individual devices.

  1. 在 Visual Studio Cloud Explorer 中,选择已部署到的 IoT Edge 设备的名称。In the Visual Studio cloud explorer, select the name of the IoT Edge device that you deployed to.

  2. 在“操作”菜单中,选择“开始监视内置事件终结点”。 In the Actions menu, select Start Monitoring Built-in Event Endpoint.

  3. 观察 Visual Studio 中的“输出”部分,以查看抵达 IoT 中心的消息。 Watch the Output section in Visual Studio to see messages arriving at your IoT hub.

    启动这两个模块可能需要几分钟时间。It may take a few minutes for both modules to start. IoT Edge 运行时需要接收其新部署清单、从容器运行时提取模块映像,然后启动每个新模块。The IoT Edge runtime needs to receive its new deployment manifest, pull down the module images from the container runtime, then start each new module. 如果你If you

    查看传入的设备到云消息

查看设备上的更改View changes on device

若要查看设备本身上发生的情况,请使用本部分所述的命令来检查设备上运行的 IoT Edge 运行时和模块。If you want to see what's happening on your device itself, use the commands in this section to inspect the IoT Edge runtime and modules running on your device.

本部分所述的命令适用于 IoT Edge 设备,而不适用于开发计算机。The commands in this section are for your IoT Edge device, not your development machine. 如果对 IoT Edge 设备使用了虚拟机,现在请连接到该虚拟机。If you're using a virtual machine for your IoT Edge device, connect to it now. 在 Azure 中,转到该虚拟机的概述页,并选择“连接”以访问远程桌面连接。 In Azure, go to the virtual machine's overview page and select Connect to access the remote desktop connection. 在设备上打开命令提示符或 PowerShell 窗口,以运行 iotedge 命令。On the device, open a command or PowerShell window to run the iotedge commands.

  • 查看已部署到设备的所有模块,并检查其状态:View all modules deployed to your device, and check their status:

    iotedge list
    

    应该看到四个模块:两个 IoT Edge 运行时模块、SimulatedTemperatureSensor 和 IotEdgeModule1。You should see four modules: the two IoT Edge runtime modules, SimulatedTemperatureSensor, and IotEdgeModule1. 所有四个模块应列为“正在运行”。All four should be listed as running.

  • 检查特定模块的日志:Inspect the logs for a specific module:

    iotedge logs <module name>
    

    IoT Edge 模块区分大小写。IoT Edge modules are case-sensitive.

    SimulatedTemperatureSensor 和 IotEdgeModule1 日志应显示其正在处理的消息。The SimulatedTemperatureSensor and IotEdgeModule1 logs should show the messages they're processing. edgeAgent 模块负责启动其他模块,因此,其日志将包含有关实现部署清单的信息。The edgeAgent module is responsible for starting the other modules, so its logs will have information about implementing the deployment manifest. 如有任一模块未列出或未运行,edgeAgent 日志可能会包含错误。If any module isn't listed or isn't running, the edgeAgent logs will probably have the errors. edgeHub 模块负责模块与 IoT 中心之间的通信。The edgeHub module is responsible for communications between the modules and IoT Hub. 如果模块已启动并正在运行,但消息未抵达 IoT 中心,edgeHub 日志可能会包含错误。If the modules are up and running, but the messages aren't arriving at your IoT hub, the edgeHub logs will probably have the errors.

后续步骤Next steps

在本教程中,在开发计算机上设置了 Visual Studio 2019 并从中部署了第一个 IoT Edge 模块。In this tutorial, you set up Visual Studio 2019 on your development machine and deployed your first IoT Edge module from it. 了解基本概念后,接下来请尝试将功能添加到模块,使它可以分析其中传递的数据。Now that you know the basic concepts, try adding functionality to a module so that it can analyze the data passing through it. 选择首选的语言:Choose your preferred language:

C C#C C#