C# IoC设计-动态代理服务的服务内参考服务定位器
我使用IoC容器(Unity)来注册接口和解析/实例化对象 它工作正常,所有依赖于接口的类都被注入到构造函数中,但是我遇到了一个设计问题 我有一个CronJob服务,它在特定时间调用注册的委托,它也由服务定位器实例化 因为可以注册作业,所以我从实例化的类中引用服务定位器Unity容器,因为我不知道在编译时哪些对象将被传递到构造函数中,因为作业可以动态注册 然而,尽管我对IoC和unity还不熟悉,但据我所知,从服务中引用静态服务定位器是不好的,所有依赖项都应该在构造函数中传递——因此我希望能够考虑其他方法来实现这一点,或者在这种情况下引用服务定位器可以吗 谢谢 克里斯 代码如下: 使用Unity的服务定位器C# IoC设计-动态代理服务的服务内参考服务定位器,c#,.net,inversion-of-control,ioc-container,C#,.net,Inversion Of Control,Ioc Container,我使用IoC容器(Unity)来注册接口和解析/实例化对象 它工作正常,所有依赖于接口的类都被注入到构造函数中,但是我遇到了一个设计问题 我有一个CronJob服务,它在特定时间调用注册的委托,它也由服务定位器实例化 因为可以注册作业,所以我从实例化的类中引用服务定位器Unity容器,因为我不知道在编译时哪些对象将被传递到构造函数中,因为作业可以动态注册 然而,尽管我对IoC和unity还不熟悉,但据我所知,从服务中引用静态服务定位器是不好的,所有依赖项都应该在构造函数中传递——因此我希望能够考
// ServiceManager provides service location facilities, logging facilities, and database access via IUnitOfWork interface
public class ServiceManager
{
private static readonly UnityContainer m_ServicesContainer = new UnityContainer();
private static readonly ServiceManager m_Manager = new ServiceManager();
public static ServiceManager Instance { get { return m_Manager; } }
private ILogger Logger { get { return Resolve<ILogger>(); } }
public T Resolve<T>()
{
return m_ServicesContainer.Resolve<T>();
}
private ServiceManager()
{
// register the unit of work class first!!
RegisterType<IUnitOfWork, UnitOfWork>();
// always register the logger (without logging)
RegisterType<ILogger, NLogForEntityFrameworkLogger>(true);
// always register the settings manager (without logging)
RegisterType<ISettingsService, SettingsService>();
RegisterType<IPluginManagerService, PluginManagerService>(true);
RegisterType<ICronJobService, CronJobService>(true);
RegisterType<IReminderGeneratorService, ReminderGeneratorService>();
RegisterType<IInvoiceService, InvoiceService>();
}
public void RegisterType<TFrom, TTo>(bool isSingleton = false)
{
if (isSingleton == false)
m_ServicesContainer.RegisterType(typeof(TFrom), typeof(TTo));
else
m_ServicesContainer.RegisterType(typeof(TFrom), typeof(TTo), new ContainerControlledLifetimeManager());
}
}
//ServiceManager通过IUnitOfWork接口提供服务位置工具、日志记录工具和数据库访问
公共类服务管理器
{
私有静态只读UnityContainer m_ServicesContainer=新UnityContainer();
私有静态只读ServiceManager m_Manager=新ServiceManager();
公共静态ServiceManager实例{get{return m_Manager;}}
专用ILogger记录器{get{return Resolve();}}
公共事务解决方案
{
返回m_ServicesContainer.Resolve();
}
私人服务经理()
{
//先注册工作班的单位!!
RegisterType();
//始终注册记录器(不记录日志)
RegisterType(true);
//始终注册设置管理器(不记录日志)
RegisterType();
RegisterType(true);
RegisterType(true);
RegisterType();
RegisterType();
}
公共无效注册表类型(bool-isSingleton=false)
{
如果(isSingleton==false)
m_ServicesContainer.RegisterType(类型of(TFrom),类型of(TTo));
其他的
m_ServicesContainer.RegisterType(typeof(TFrom)、typeof(TTo)、新的ContainerControlled LifetimeManager();
}
}
CronJob类
public static class CronJobDelegates
{
public static void SyncRecords(BusinessUnit businessUnit)
{
ISynchronisationService syncService = ServiceManager.Instance.Resolve<ISynchronisationService>();
syncService.Sync(businessUnit);
}
}
class CronJobService : ServiceBaseWithUnitOfWork, ICronJobService
{
public CronJobService(IUnitOfWork unitOfWork, ILogger logger, ISettingsService settings)
: base(unitOfWork, logger)
{
m_Settings = settings;
RegisterCronJob("SyncAccountRecords", CronJobDelegates.SyncRecords,"*1****");
}
ISettingsService m_Settings;
public class RegisteredCronJob
{
public RegisteredCronJob(string jobName, EventJobDelegate job)
{
JobName = jobName;
Job = job;
}
public string JobName { get; private set; }
public EventJobDelegate Job { get; private set; }
}
static object Lock = new object();
Dictionary<string, EventJobDelegate> CronJobs = new Dictionary<string, EventJobDelegate>();
public void RegisterCronJob(string jobName, EventJobDelegate jobCallback, string jobSetting)
{
lock(Lock)
{
if(CronJobs.ContainsKey(jobName))
{
LogMessage("Job '" + jobName + "' already registered", LogLevel.Warn);
// warning job already registered
}
else
{
CronJob cronJobRecord = UnitOfWork.CronJobRepository.GetByID(jobName);
if (cronJobRecord == null)
{
CronJob newCronJob = new CronJob()
{
JobName = jobName,
JobSetting = jobSetting
};
UnitOfWork.CronJobRepository.Insert(newCronJob);
}
else
jobSetting = cronJobRecord.JobSetting;
LogMessage("Job '" + jobName + "' registered using settings: " + jobSetting + ". Next run due on UTC " + NCrontab.CrontabSchedule.Parse(jobSetting).GetNextOccurrence(DateTime.UtcNow), LogLevel.Info);
CronJobs.Add(jobName, jobCallback);
UnitOfWork.Save();
}
}
}
public void ProcessEvents()
{
foreach(BusinessUnit businessUnit in UnitOfWork.BusinessUnitRepository.Get())
{
foreach (CronJob cronJob in UnitOfWork.CronJobRepository.Get())
{
lock(Lock)
{
NCrontab.CrontabSchedule schedule = NCrontab.CrontabSchedule.Parse(cronJob.JobSetting);
if (schedule.GetNextOccurrence(cronJob.LastRan) > DateTime.UtcNow.AddHours(businessUnit.GmtOffset))
{
EventJobDelegate jobDelegate;
if (CronJobs.TryGetValue(cronJob.JobName, out jobDelegate) == true )
{
jobDelegate(businessUnit);
cronJob.LastRan = DateTime.UtcNow;
UnitOfWork.CronJobRepository.Update(cronJob);
LogMessage("Job '" + cronJob.JobName + "' ran, next schedule on " + schedule.GetNextOccurrence(cronJob.LastRan));
}
}
}
}
}
UnitOfWork.Save();
}
}
公共静态类CronJobDelegates
{
公共静态无效同步记录(业务单元业务单元)
{
ISynchronisationService-syncService=ServiceManager.Instance.Resolve();
syncService.Sync(业务单元);
}
}
类CronJobService:ServiceBaseWithUnitOfWork,MicronJobService
{
公共CronJobService(IUnitOfWork、ILogger记录器、ISettingsService设置)
:底座(工作单元、记录器)
{
m_设置=设置;
RegisterCronJob(“SyncAccountRecords”,CronJobDelegates.SyncRecords,“*1****”);
}
i设置服务m_设置;
公共类RegisteredCronJob
{
公共RegisteredCronJob(字符串jobName,EventJobDelegate job)
{
JobName=JobName;
工作=工作;
}
公共字符串JobName{get;private set;}
public EventJobDelegate作业{get;private set;}
}
静态对象锁=新对象();
Dictionary CronJobs=新字典();
public void RegisterCronJob(字符串jobName、EventJobDelegate jobCallback、字符串jobSetting)
{
锁(锁)
{
if(CronJobs.ContainsKey(jobName))
{
LogMessage(“作业”’+jobName+“‘已注册’”,LogLevel.Warn);
//警告作业已注册
}
其他的
{
CronJob cronJobRecord=UnitOfWork.CronJobRepository.GetByID(作业名称);
if(cronJobRecord==null)
{
CronJob newCronJob=new CronJob()
{
JobName=JobName,
作业设置=作业设置
};
UnitOfWork.CronJobRepository.Insert(newCronJob);
}
其他的
jobSetting=cronJobRecord.jobSetting;
LogMessage(“作业”“+jobName+””使用设置注册:“+jobSetting+”。下一次运行将在UTC“+nContab.CrontabSchedule.Parse(jobSetting).GetNextOccurrence(DateTime.UtcNow),LogLevel.Info”到期;
添加(jobName,jobCallback);
UnitOfWork.Save();
}
}
}
public void ProcessEvents()
{
foreach(UnitOfWork.BusinessUnitRepository.Get()中的BusinessUnit BusinessUnit)
{
foreach(UnitOfWork.CronJobRepository.Get()中的CronJob CronJob)
{
锁(锁)
{
ncontab.CrontabSchedule schedule=ncontab.CrontabSchedule.Parse(cronJob.JobSetting);
if(schedule.GetNextOccurrence(cronJob.LastRan)>DateTime.UtcNow.AddHours(businessUnit.GmtOffset))
{
EventJobDelegate jobDelegate;
if(CronJobs.TryGetValue(cronJob.JobName,out jobDelegate)==true)
{
工作代表(业务单位);
cronJob.LastRan=DateTime.UtcNow;
UnitOfWork.CronJobRepository.Update(cronJob);
日志消息(“Job'”+cronJob.JobName+“”已运行,下一个计划位于“+schedule.GetNextOccurrence(cronJob.LastRan));
}
}
}
}
}
UnitOfWork.Save();
}
}
您可以注入一个工厂,然后像在SyncRecords中一样解析调用容器的ISynchronisationService实例
有关实施工厂方法的示例