ASP.NET Core 2.1的配置、AOP、缓存、部署、ORM、进程守护、Nginx、Polly【源码】

ps:废话不多说。直接上代码：源码地址：https://github.com/786744873/Asp.Net-Core-2.1-All-Demos/tree/master/src

Configuration的配置

说明：基于三种方式的读取配置文件以及自定义读取自定义配置文件

文件结构

代码

PropertiesConfigurationProvider.cs

public class PropertiesConfigurationProvider:ConfigurationProvider
{
    string _path = string.Empty;
    public PropertiesConfigurationProvider(string path)
    {
        this._path = path;
    }

    /// <summary>
    /// 用于解析1.properties
    /// </summary>
    public override void Load()
    {
        var lines = File.ReadAllLines(this._path);

        var dict = new Dictionary<string, string>();

        foreach (var line in lines)
        {
            var items = line.Split('=');
            dict.Add(items[], items[]);
        }

        this.Data = dict;
    }
}

PropertiesConfigurationSource.cs

public class PropertiesConfigurationSource : IConfigurationSource
{

    string _path = string.Empty;
    public PropertiesConfigurationSource(string path)
    {
        this._path = path;
    }

    public IConfigurationProvider Build(IConfigurationBuilder builder)
    {
        return new PropertiesConfigurationProvider(_path);
    }
}

PropertiesConfigurationExtensions.cs

public static class PropertiesConfigurationExtensions
{
    public static IConfigurationBuilder AddPropertiesFile(this IConfigurationBuilder builder, string path)
    {
        builder.Add(new PropertiesConfigurationSource(path));
        return builder;
    }
}

1.properties

port=
host=127.0.0.1

appsettings.json

{
  "mysql": {
    "host": "127.0.0.1",
    "port":
  },
  "shopidlist": [
    { "entid":  },
    { "entid":  }
  ]
}

Program.cs

class Program
{
    static void Main(string[] args)
    {
        IConfiguration Configuration = new ConfigurationBuilder()
            .SetBasePath(Environment.CurrentDirectory)
            .AddJsonFile("appsettings.json", optional:true,reloadOnChange:true)
            .AddPropertiesFile("1.properties")//加载自定义文件
            .Build();

        Appsettings appsettings = new Appsettings();
        Configuration.Bind(appsettings);

        Console.WriteLine(appsettings.mysql.port);

        Console.WriteLine(Configuration["mysql:port"]);

        Console.WriteLine(Configuration.GetValue<int>("mysql:port"));

        Console.WriteLine(Configuration.GetSection("mysql").GetSection("port").Value);
        //读取自定义文件
        Console.WriteLine(Configuration["host"]);

        Console.Read();
    }
}

public class Appsettings
{
    public Mysql mysql { get; set; }
    public Shopidlist[] shopidlist { get; set; }
}

public class Mysql
{
    public string host { get; set; }
    public int port { get; set; }
}

public class Shopidlist
{
    public int entid { get; set; }
}

CollectionService注入

文件结构

代码

Program.cs

class Program
{
    static void Main(string[] args)
    {
        //IOC容器
        ServiceCollection services = new ServiceCollection();

        //注册服务
        services.AddScoped<IFlay, Pig>();

        //注册日志服务
        services.AddLogging();

        var provider = services.BuildServiceProvider();

        provider.GetService<ILoggerFactory>().AddConsole(LogLevel.Debug);

        var fly = provider.GetService<IFlay>();

        fly.Flay();

    }
}

public interface IFlay
{
    void Flay();
}

public class Pig : IFlay
{
    ILogger<Pig> logger = null;

    public Pig(ILoggerFactory loggerFactory)
    {
        logger=loggerFactory.CreateLogger<Pig>();
    }

    public void Flay()
    {
        logger.LogInformation("这是Console日志");
        Console.WriteLine("风口来了，猪都会飞了！");
    }
}

AOP AspectCore

文件结构

代码

Program.cs

//https://github.com/dotnetcore/AspectCore-Framework
class Program
{
    static void Main(string[] args)
    {
        ServiceCollection services = new ServiceCollection();

        //注册AspectCore动态代理服务
        services.AddDynamicProxy();

        services.AddTransient<IMySql, MySql>();

        var provider= services.BuildDynamicProxyServiceProvider();

        var mysql = provider.GetService<IMySql>();

        //走业务逻辑
        var msg= mysql.GetData();
        Console.WriteLine(msg);

        //走缓存
        msg = mysql.GetData();
        Console.WriteLine(msg);

    }
}

public class MysqlInterceptorAttribute : AbstractInterceptorAttribute
{
    private Dictionary<string, string> cacheDict = new Dictionary<string, string>();

    public override Task Invoke(AspectContext context, AspectDelegate next)
    {

        //用id作为cachekey
        var cacheKey = string.Join(",", context.Parameters);
        if (cacheDict.ContainsKey(cacheKey))
        {
            context.ReturnValue = cacheDict[cacheKey];
            return Task.CompletedTask;
        }

        var task = next(context);
        //ReturnValue实际上就是一个传递值的媒介
        var cacheValue = context.ReturnValue;

        cacheDict.Add(cacheKey, $"from Cache：{cacheValue.ToString()}");

        return task;

        //Console.WriteLine("开始记录日志。。。。");
        //var task = next(context);
        //Console.WriteLine("结束记录日志。。。。");
        //return task;
    }
}

public interface IMySql
{
    [MysqlInterceptor]
    string GetData(int id);
}

public class MySql : IMySql
{
    public string GetData(int id)
    {
        var msg = $"已经获取到id={id}的数据";
        //Console.WriteLine(msg);
        return msg;
    }
}

MemoryCache

文件结构

代码

Program.cs

class Program
{
    static void Main(string[] args)
    {

        {//cache的最大限度为100

            MemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions()
            {
                SizeLimit =
            });

            for (int i = ; i < ; i++)
            {
                memoryCache.Set<string>(i.ToString(), i.ToString(), new MemoryCacheEntryOptions()
                {
                    Size =
                });

                Console.WriteLine(memoryCache.Count);
            }
        }

        {//被动过期，设置过期回调

            MemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions()
            {

            });

            var cacheOptions = new MemoryCacheEntryOptions
            {
                AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(),//3秒过期
            };
            cacheOptions.RegisterPostEvictionCallback((key, value, reason, obj) =>
            {
                Console.WriteLine(reason);
                Console.WriteLine("执行过期回调");
            });

            memoryCache.Set("key", "value", cacheOptions);

            Console.WriteLine("3秒后过期将执行回调");
            while (true)
            {
                Thread.Sleep();
                Console.WriteLine(memoryCache.Get<string>("key"));
            }
            Console.ReadKey();
        }

        {//主动过期(10秒被动过期，2秒主动使用token让他过期)

            CancellationTokenSource tokenSource = new CancellationTokenSource();
            MemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions()
            {

            });

            var cacheOptions = new MemoryCacheEntryOptions
            {
                AbsoluteExpiration = DateTimeOffset.Now.AddSeconds(),//10秒过期
            };
            cacheOptions.AddExpirationToken(new CancellationChangeToken(tokenSource.Token));//加入Token
            cacheOptions.RegisterPostEvictionCallback((key, value, reason, obj) =>
            {
                Console.WriteLine(reason);
                Console.WriteLine("执行过期回调");
            });

            memoryCache.Set("key", "value", cacheOptions);

            Console.WriteLine("10秒后过期将执行回调");

            tokenSource.CancelAfter(TimeSpan.FromSeconds());
            while (true)
            {
                Thread.Sleep();
                Console.WriteLine(memoryCache.Get<string>("key"));
            }
            Console.ReadKey();
        }
    }
}

Redis MongoDB

文件结构

代码

Program.cs

class Program
{
    static void Main(string[] args)
    {
        //Redis
        {
            RedisCache redisCache = new RedisCache(new RedisCacheOptions()
            {
                Configuration = "127.0.0.1:6379",
                InstanceName = "test"
            });

            //在Redis中是以Hash的模式存放的
            redisCache.SetString("username", "jack", new DistributedCacheEntryOptions
            {
                AbsoluteExpiration = DateTime.Now.AddDays(),
            });

            var info = redisCache.GetString("username");

            Console.WriteLine(info);
        }

        //MongoDB
        {
            MongoDBCache mongoDBCache = new MongoDBCache(new MongoDBCacheOptions()
            {
                ConnectionString = "mongodb://127.0.0.1:27017",
                DatabaseName = "mydb",
                CollectionName = "mytest"
            });

            mongoDBCache.Set("username", Encoding.UTF8.GetBytes("jack"), new DistributedCacheEntryOptions {
                AbsoluteExpiration = DateTime.Now.AddDays()
            });

            var info= Encoding.UTF8.GetString(mongoDBCache.Get("username"));
            Console.WriteLine(info);
        }

    }
}

Mysql.Data Dapper

文件结构

代码

class Program
{
    static void Main(string[] args)
    {
        //MySql.Data
        {
            var connectString = "server=127.0.0.1;por=3306;userid=root;pwd=123456;database=datamip;SslMode=none;";
            //MySqlConnection mySqlConnection = new MySqlConnection(connectString);

            //select
            var ds = MySqlHelper.ExecuteDataset(connectString, "select * from users");

            //select2
            var reader = MySqlHelper.ExecuteReader(connectString, "select * from users");
            var user = new Users();
            while (reader.Read())
            {
                user.UserId = reader.GetInt32("UserID");
                user.UserNick = reader.GetString("UserNick");
                user.LoginIP = reader.GetString("LoginIP");
                user.Email = reader.GetString("Email");
            }
            reader.Close();

            //update
            var result = MySqlHelper.ExecuteNonQuery(connectString, "update users set Email='786744873@qq.com' where UserID=1");
        }

        //Dapper
        {
            var connectString = "server=127.0.0.1;por=3306;userid=root;pwd=123456;database=datamip;SslMode=none;";
            MySqlConnection mySqlConnection = new MySqlConnection(connectString);

            //select
            var userList = mySqlConnection.Query<Users>("select * from users where UserID=@UserID",new { UserID= });

            //update
            var nums = mySqlConnection.Execute("update users set Email='786744873@qq.com' where UserID=1");
        }

    }

    class Users
    {
        public int UserId { get; set; }
        public string UserNick { get; set; }
        public string LoginIP { get; set; }
        public string Email { get; set; }
    }
}

nohup supervisord部署Unbuntu

不得不说Ubuntu18.04版本是个巨坑。还是老老实实用16.04吧，错了，是VirtualBox是个巨坑，这wtf软件各种问题，浪费我几天时间，艹

文件结构

代码

ConfigurationManager.cs

public class ConfigurationManager
{
    public static IConfigurationRoot Configuration
    {
        get
        {
            var configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile(string.Format("appsettings.{0}.json", Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")),optional:true,reloadOnChange:true)
                .AddJsonFile(string.Format("ops.{0}.json", Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT")),optional:true,reloadOnChange:true)
                .Build();
            return configuration;
        }
    }
}

Program.cs

class Program
{
    static void Main(string[] args)
    {
        var tokenSource = new CancellationTokenSource();

        Task.Factory.StartNew(() =>
        {
            while (!tokenSource.IsCancellationRequested)
            {
                Console.WriteLine($"{DateTime.Now}:业务逻辑处理中");
                Thread.Sleep();
            }
        }).ContinueWith(t =>
        {
            Console.WriteLine("服务安全退出！");
            Environment.Exit();//强制退出
        });

        Console.WriteLine("服务成功开启");

        while (!"Y".Equals(ConfigurationManager.Configuration["isquit"],StringComparison.InvariantCultureIgnoreCase))
        {
            Thread.Sleep();
        }

        tokenSource.Cancel();
    }
}

ops.Development.json  ||  ops.Production.json

{
  "isquit": "N"
}

部署过程

直接发布，发布以及虚拟机安装参照之前的博客：Virtual Box虚拟机Ubuntu18.X系统安装及Mysql基本开发配置，这里主要讲如何进行持久化

ubuntu16.04开机提示:检测到系统程序出现问题

打开终端，输入　sudo gedit /etc/default/apport 

把enabled=1改成enabled=

方案一：nohub部署

先执行 nohup dotnet 程序集名称 &

nohup dotnet ConsoleApp7.dll &  #（符号＆使程序在后台运行）
exit #（退出nohup模式）

然后输入 exit 进行退出，不然的话后台进程会被终结

启动后，会将程序运行输出记录在当前目录下的nohup.out文件下，如果当前目录不可写，则会被记录在Home目录下的nohup.out文件中

nohup dotnet ConsoleApp7.dll > my_nohup.log 2>&1 & #（将日志输出在my_nohup.log文件中，并将stderr重定向至stdout）

查看dotnet进程

ps -ef |grep dotnet

查看后10行nohup输出

tail /home/wyt/nohup.out

查看运行的后台进程

ps -ef | grep dotnet

停止程序

kill -  #(根据进程号关闭程序)

方案二：supervisord部署

安装

ubuntu安装：
sudo apt-get install supervisor
centos安装：
yum install -y supervisor 

安装成功后，会在 /etc/supervisor 目录下，生成 supervisord.conf 配置文件。

你也可以使用 echo_supervisord_conf > supervisord.conf 命令，生成默认的配置文件（不建议，内容比较多）。

supervisord.conf 示例配置：

; supervisor config file

[unix_http_server]
file=/var/run/supervisor.sock   ; (the path to the socket file)
chmod=                       ; sockef file mode (default )

[supervisord]
logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)

; the below section must remain in the config file for RPC
; (supervisorctl/web interface) to work, additional interfaces may be
; added by defining them in separate rpcinterface: sections
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

[supervisorctl]
serverurl=unix:///var/run/supervisor.sock ; use a unix:// URL  for a unix socket

; The [include] section can just contain the "files" setting.  This
; setting can list multiple files (separated by whitespace or
; newlines).  It can also contain wildcards.  The filenames are
; interpreted as relative to this file.  Included files *cannot*
; include files themselves.

[include]
files = /etc/supervisor/conf.d/*.conf

进程配置会读取 /etc/supervisor/conf.d 目录下的 *.conf 配置文件，我们在此目录下创建一个 ConsoleApp7.conf 进程配置文件：

[program:ConsoleApp7]
directory=/data/output
command=/usr/bin/dotnet /data/output/ConsoleApp7.dll
autostart=true
autorestart=true
startretries=
redirect_stderr=true
stdout_logfile=/data/output/logs/out.log
stderr_logfile=/data/output/logs/out.log
environment=ASPNETCORE_ENVIRONMENT="Development"

需要注意的是，如果不是 root 账号，需要对这些目录进行权限设置，要不然会报一些错误（一定要在 root 账号下进行配置，要不然一系列权限引起的问题