using FastGithub.DomainResolve;

using System;

using System.Net.Http;

using System.Threading;

namespace FastGithub.Http

{

/// <summary>

/// 表示自主管理生命周期的的HttpMessageHandler

/// </summary>

sealed class LifetimeHttpHandler : DelegatingHandler

{

private readonly Timer timer;

public LifeTimeKey LifeTimeKey { get; }

/// <summary>

/// 具有生命周期的HttpHandler

/// </summary>

/// <param name="domainResolver"></param>

/// <param name="lifeTimeKey"></param>

/// <param name="lifeTime"></param>

/// <param name="deactivateAction"></param>

public LifetimeHttpHandler(IDomainResolver domainResolver, LifeTimeKey lifeTimeKey, TimeSpan lifeTime, Action<LifetimeHttpHandler> deactivateAction)

{

this.LifeTimeKey = lifeTimeKey;

this.InnerHandler = new HttpClientHandler(lifeTimeKey.DomainConfig, domainResolver);

this.timer = new Timer(this.OnTimerCallback, deactivateAction, lifeTime, Timeout.InfiniteTimeSpan);

}

/// <summary>

/// timer触发时

/// </summary>

/// <param name="state"></param>

private void OnTimerCallback(object? state)

{

this.timer.Dispose();

((Action<LifetimeHttpHandler>)(state!))(this);

}

/// <summary>

/// 这里不释放资源

/// </summary>

/// <param name="disposing"></param>

protected override void Dispose(bool disposing)

{

}

}

}