.NET6用起来-Quartz.NET-技术圈

Quartz.NET是一个功能齐全的开源作业调用系统，大大小小的应用程序都可使用。

创建一个asp.NET core web项目，使用quartz.NET的作业，定时调用远程接口是否能正常访问，发生异常调用飞书消息接口，把异常发送给指定的同事飞书。

1.准备工作

定义一个作业调用的服务接口ICheckService

    public interface ICheckService    {        Task ConnectRemoteApi(ConnectRemoteApiInput input);    }

实现类CheckService

public class CheckService : ICheckService    {        private readonly ILogger _logger;        private readonly IHttpClientFactory _httpClientFactory;        private readonly AppSetting _appSetting;        public CheckService(ILogger logger, IHttpClientFactory httpClientFactory            , IOptionsMonitor options)        {            _logger = logger;            _httpClientFactory = httpClientFactory;            _appSetting = options.CurrentValue;        }
        public async Task ConnectRemoteApi(ConnectRemoteApiInput input)        {
            var para = new SecurityCodeInput()            {                Code = input.InnerCode,                Inner = input.Inner            };
            HttpClient client = _httpClientFactory.CreateClient();            var paraContent = new StringContent(JsonSerializer.Serialize(para),                encoding: Encoding.UTF8,                mediaType: "application/json");
            try            {                using var httpResponse = await client.PostAsync(_appSetting.CheckUrl, paraContent);                var result = await httpResponse.Content.ReadAsStringAsync();                _logger.LogInformation(httpResponse.StatusCode.ToString());            }            catch (Exception ex)            {                //通过飞书发送消息给指定的人员                _logger.LogInformation(ex.Message);
            }        }    }

实现Ijob接口

public class CheckRemoteApiJob : IJob    {        private readonly ICheckService _checkService;        private readonly AppSetting _appSetting;        public CheckRemoteApiJob(ICheckService checkService, IOptionsMonitor options)        {            _checkService = checkService;            _appSetting = options.CurrentValue;        }
        public async Task Execute(IJobExecutionContext context)        {            await _checkService.ConnectRemoteApi(new ConnectRemoteApiInput            {                InnerCode = _appSetting.InnerCode,            });        }    }

请先安装Quartz.AspNetCore nuget包，我使用的是最新的版本3.4.0，Execute方法默认是异步的，如果你的业务没有异步，可以使用Task.CompletedTask。

2.Job和Trigger绑定

作业已经实现，何时进行触发呢，Quartz.NET提供了一个trigger的概念。job和trigger进行绑定，Quartz既可以调度我们的job了。触发器和job的绑定，可以通过代码的方式，也可以通过xml形式（可以通过设置参数ScanInterval支持定期去扫描最新的变动），以下代码演示代码配置的两种方式进行调度我们的作业CheckRemoteApiJob。

2.1.使用ScheduleJob方法，Job绑定到单个Trigger，代码如下：

builder.Services.Configure(builder.Configuration.GetSection("AppSetting"));builder.Services.AddHttpClient();builder.Services.AddScoped();
builder.Services.AddQuartz(q =>{    //支持DI，默认Ijob 实现不支持有参构造函数    q.UseMicrosoftDependencyInjectionJobFactory();
    q.ScheduleJob(trigger => trigger            .WithIdentity("ConnectionRemoteApiTrigger")            .StartAt(DateBuilder.EvenSecondDate(DateTimeOffset.UtcNow.AddSeconds(7)))            .WithDailyTimeIntervalSchedule(x => x.WithInterval(builder.Configuration.GetValue("AppSetting:CheckRemoteApiJobIntervalMinute"), IntervalUnit.Minute))            .WithDescription("定时访问远程接口")        );
});builder.Services.AddQuartzServer(options =>{    // when shutting down we want jobs to complete gracefully    options.WaitForJobsToComplete = true;});
builder.Services.AddTransient();

调用ScheduleJob方法，job默认只能绑定一个trigger。

运行代码，在控制台查看，每隔1分钟输出如下

2.2.job可以绑定到多个Trigger

builder.Services.AddQuartz(q =>{    //支持DI，默认Ijob 实现不支持有参构造函数    q.UseMicrosoftDependencyInjectionJobFactory();    //------sample    //q.ScheduleJob(trigger => trigger    //        .WithIdentity("ConnectionRemoteApiTrigger")    //        .StartAt(DateBuilder.EvenSecondDate(DateTimeOffset.UtcNow.AddSeconds(7)))    //        .WithDailyTimeIntervalSchedule(x => x.WithInterval(builder.Configuration.GetValue("AppSetting:CheckRemoteApiJobIntervalMinute"), IntervalUnit.Minute))    //        .WithDescription("定时访问远程接口")    //    );

    //---------cron
    var jobKey = new JobKey("ConnectionRemoteApi job", "ConnectionRemoteApi group");
    q.AddJob(jobKey, j => {        j.WithDescription("定时访问远程接口job");    });

    q.AddTrigger(t => t           .WithIdentity("ConnectionRemoteApi Cron Trigger")           .ForJob(jobKey)           .StartAt(DateBuilder.EvenSecondDate(DateTimeOffset.UtcNow.AddSeconds(3)))           .WithCronSchedule(builder.Configuration.GetValue<string>("AppSetting:CheckRemoteApiJobCron"))           .WithDescription("定时访问远程接口trigger")       );
});

如果不想使用cron表达式，也可以使用方法 WithSimpleSchedule替换如：

WithSimpleSchedule(x=> x.WithInterval(TimeSpan.FromMinutes(builder.Configuration.GetValue"AppSetting:CheckRemoteApiJobIntervalMinute"))).RepeatForever())

再次运行代码，跟上面的输出是一样的。

参考官网：https://www.quartz-scheduler.net/