Dapr的安装和配置,以及.NET5与其结合

微软文档:https://docs.microsoft.com/zh-cn/dotnet/architecture/dapr-for-net-developers/getting-started

官方文档:https://docs.dapr.io/zh-hans/getting-started/install-dapr-cli/

 

==================

接下来用CentOS7演示
==================

 

一、安装 Dapr CLI

1、进入官网快速入门,找到压缩包来安装(前面的命令我没成功过-.-//)

2、在github中找到最新稳定版,展开“Assets”,下载名为“dapr_linux_amd64.tar.gz”的压缩包

3、打开CentOS系统,并安装Docker环境,参考安装:https://www.cnblogs.com/shousiji/p/14918631.html

4、可以通过FTP工具,将dapr压缩包上传到CentOS的“/usr/local/bin”目录中,并且cd到这个目录,再执行解压命令

(先解压再上传,和先上传再解压,会导致这个文件的权限不一样,前者就可能会出现“权限不足的情况”)

tar -zvxf dapr_linux_amd64.tar.gz

 5、验证是否成功,执行命令

dapr

出现如图表示成功

 

二、本地初始化 Dapr

1、运行init CLI 命令

dapr init

#或者安装指定版本
dapr init --runtime-version 1.4.0

安装需要几分钟,如果这里一直在打转,取消后再搭个梯子重新来吧

2、验证Dapr 版本

dapr --version

像这样:

3、验证容器

docker ps

默认会装上这几个镜像:

 

三、安装.NET5 SDK

1、回到根目录

cd ~

2、将 Microsoft 包签名密钥添加到受信任密钥列表

sudo rpm -Uvh https://packages.microsoft.com/config/centos/7/packages-microsoft-prod.rpm

3、安装SDK

sudo yum install dotnet-sdk-5.0

4、验证SDK

dotnet --info

 

四、.NET5程序

1、创建一个.NET5 Web项目,命名为“SGZ.DepartmentService”,安装Nuget包“Dapr.AspNetCore”

2、创建控制器如下

[Route("[controller]/[action]")]
[ApiController]
public class DepartmentController : ControllerBase
{
    private static readonly List<DepartmentDto> _departments = new()
    {
        new DepartmentDto{ ID = "D001", Name = "部门1" },
        new DepartmentDto{ ID = "D002", Name = "部门2" },
        new DepartmentDto{ ID = "D003", Name = "部门3" },
        new DepartmentDto{ ID = "D004", Name = "部门4" },
        new DepartmentDto{ ID = "D005", Name = "部门5" }
    };

    [HttpGet]
    public IActionResult GetList()
    {
        return Ok(_departments);
    }
}

3、服务注册到Dapr,需Startup类加入

4、发布站点到CentOS的“/usr/web/DepartmentService”目录,并且cd到这个目录,执行命令

dapr run --app-id DepartmentService --app-port 680 --dapr-http-port 681 -- dotnet SGZ.DepartmentService.dll --urls "http://*:680"

出现如图即为成功

5、新开一个窗口,进行服务访问

格式:
curl http://localhost:<dapr-port>/v1.0/invoke/<application-id>/method/<method-name>

示例:
curl http://localhost:681/v1.0/invoke/DepartmentService/method/Department/GetList

成功返回结果

 

五、服务间的访问

1、整体结构

2、部门服务不变,就步骤四那样;这里设计人员服务访问部门服务,故控制器如下

[Route("[controller]/[action]")]
[ApiController]
public class PersonnelController : ControllerBase
{
    private readonly Dapr.Client.DaprClient _daprClient;

    private static readonly List<PersonnelDto> _personnels = new()
    {
        new PersonnelDto{ ID = "S001", Name = "人员1" },
        new PersonnelDto{ ID = "S002", Name = "人员2" },
        new PersonnelDto{ ID = "S003", Name = "人员3" }
    };

    public PersonnelController(Dapr.Client.DaprClient daprClient)
    {
        _daprClient = daprClient;
    }

    [HttpGet]
    public IActionResult GetList()
    {
        //var client = new Dapr.Client.DaprClientBuilder().Build();
        //参数二:要访问的服务(步骤四第4点,命令中配置的app-id名称)
        //参数三:要访问的action地址,根据你配置的路由格式来填写
        var dlist = _daprClient
            .InvokeMethodAsync<List<DepartmentDto>>(HttpMethod.Get, "DepartmentService", "Department/GetList");
        object obj = new
        {
            DepartmentList = dlist,
            PersonnelList = _personnels
        };
        return Ok(obj);
    }
}

3、服务注册到Dapr,需Startup类加入

4、新开一个窗口连接到CentOS,将部门服务发布到“/usr/web/DepartmentService”目录,并cd到这个目录,执行命令

dapr run --app-id DepartmentService --app-port 680 --dapr-http-port 681 -- dotnet SGZ.DepartmentService.dll --urls "http://*:680"

5、新开一个窗口连接到CentOS,将人员服务发布到“/usr/web/PersonnelService”目录,并cd到这个目录,执行命令

dapr run --app-id PersonnelService --app-port 690 --dapr-http-port 691 -- dotnet SGZ.PersonnelService.dll --urls "http://*:690"

6、新开一个窗口连接到CentOS,访问人员服务

curl http://localhost:691/v1.0/invoke/PersonnelService/method/Personnel/GetList

可以看到,连同部门信息也查询到了

 

六、发布订阅

默认使用的组件是Redis,可以改为其它组件,像Kafka、RabbitMQ等等,感兴趣的去查看文档,这里就不在叙述了

1、人员服务添加函数和特性,并部署到“/usr/web/PersonnelService”目录

[Route("[controller]/[action]")]
[ApiController]
public class PersonnelController : ControllerBase
{
    private readonly Dapr.Client.DaprClient _daprClient;

    private static readonly List<PersonnelDto> _personnels = new()
    {
        new PersonnelDto{ ID = "S001", Name = "人员1" },
        new PersonnelDto{ ID = "S002", Name = "人员2" },
        new PersonnelDto{ ID = "S003", Name = "人员3" }
    };

    public PersonnelController(Dapr.Client.DaprClient daprClient)
    {
        _daprClient = daprClient;
    }

    //参数一取值固定pubsub,参数二自定义
    [Topic("pubsub", "PersonnelAdd")]
    [HttpPost]
    public IActionResult Add(PersonnelDto dto)
    {
        Console.WriteLine("进行了人员添加操作");
        _personnels.Add(dto);
        return Ok(dto);
    }

    [HttpGet]
    public IActionResult GetList()
    {
        return Ok(_personnels);
    }
}

2、部门服务如法炮制,并部署到“/usr/web/DepartmentService”目录

[Route("[controller]/[action]")]
[ApiController]
public class DepartmentController : ControllerBase
{
    private static readonly List<DepartmentDto> _departments = new()
    {
        new DepartmentDto { ID = "D001", Name = "部门1" },
        new DepartmentDto { ID = "D002", Name = "部门2" },
        new DepartmentDto { ID = "D003", Name = "部门3" },
        new DepartmentDto { ID = "D004", Name = "部门4" },
        new DepartmentDto { ID = "D005", Name = "部门5" }
    };

    [Topic("pubsub", "DepartmentAdd")]
    [HttpPost]
    public IActionResult Add(DepartmentDto dto)
    {
        Console.WriteLine("进行了部门添加操作");
        Console.WriteLine($"ID:{dto.ID};Name:{dto.Name};aaa:{dto.aaa};BBB:{dto.BBB};");
        _departments.Add(dto);
        return Ok(dto);
    }

    [HttpGet]
    public IActionResult GetList()
    {
        return Ok(_departments);
    }
}

3、部门服务和人员服务是订阅者,需要各自加入:endpoints.MapSubscribeHandler();

4、创建一个聚合服务Web项目,命令为“SGZ.AggregationService”,需要注册到Dapr,Startup类加入

5、添加控制器,完后部署到“/usr/web/AggregationService”目录

[Route("[controller]/[action]")]
[ApiController]
public class AggregationController : ControllerBase
{
    private readonly Dapr.Client.DaprClient _daprClient;

    public AggregationController(Dapr.Client.DaprClient daprClient)
    {
        _daprClient = daprClient;
    }

    [HttpPost]
    public async Task<IActionResult> Add()
    {
        var dDto = new DepartmentDto
        {
            ID = Guid.NewGuid().ToString(),
            Name = "baoanke",
            aaa = "aaa",
            BBB = "bbb"
        };
        await _daprClient.PublishEventAsync("pubsub", "DepartmentAdd", dDto);
        var pDto = new PersonnelDto
        {
            ID = Guid.NewGuid().ToString(),
            Name = "zhangsan"
        };
        await _daprClient.PublishEventAsync("pubsub", "PersonnelAdd", pDto);
        return Content("OK");
    }

    [HttpGet]
    public async Task<IActionResult> GetList()
    {
        //var client = new Dapr.Client.DaprClientBuilder().Build();
        //参数二:要访问的服务(步骤四第4点,命令中配置的app-id名称)
        //参数三:要访问的action地址,根据你配置的路由格式来填写
        var dlist = await _daprClient
            .InvokeMethodAsync<List<DepartmentDto>>(HttpMethod.Get, "DepartmentService", "Department/GetList");
        var plist = await _daprClient
            .InvokeMethodAsync<List<PersonnelDto>>(HttpMethod.Get, "PersonnelService", "Personnel/GetList");
        object obj = new
        {
            DepartmentList = dlist,
            PersonnelList = plist
        };
        return Ok(obj);
    }
}

6、开启3个窗口,cd到各个服务的目录下,依次执行命令

#运行部门服务
dapr run --app-id DepartmentService --app-port 680 --dapr-http-port 681 -- dotnet SGZ.DepartmentService.dll --urls "http://*:680"
#运行人员服务
dapr run --app-id PersonnelService --app-port 690 --dapr-http-port 691 -- dotnet SGZ.PersonnelService.dll --urls "http://*:690"
#运行聚合服务
dapr run --app-id AggregationService --app-port 670 --dapr-http-port 671 -- dotnet SGZ.AggregationService.dll --urls "http://*:670"

7、打开postman,访问聚合服务的添加接口:http://192.168.134.130:670/Aggregation/Add,并成功返回OK信息(端口需要防火墙开启)

部门服务和人员服务窗口也打印出了相关信息

8、访问聚合服务的列表接口:http://192.168.134.130:670/Aggregation/GetList,可以看到返回的结果有新的数据

 不过奇怪的是只有id添加成功,其它字段都不行!

控制台打印也确实只有ID有值。后面试了多种方式都不行,等下个版本再看看了,本文Dapr版本是1.4.0 

 

本文发布订阅版代码:https://files.cnblogs.com/files/shousiji/net5_dapr.rar

posted @ 2021-09-20 00:10  水沽籽  阅读(816)  评论(1编辑  收藏  举报