将取消令牌插入启动中的配置方法

Question

。net核心中是否可以在启动时向配置方法注入取消令牌？取消应用程序时会调用它吗？

public void Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceScopeFactory scopeFactory, ILogger<Startup> logger, CancellationToken ct)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    _foo = app.ApplicationServices.GetService<foo>();
    app._foo.load(ct);

    ...
}

Answer 1

您应该从IHostApplicationLifetime获得ApplicationServices并使用ApplicationStopping。

var hostApplicationLifetime = app.ApplicationServices.GetService<IHostApplicationLifetime>();

_foo = app.ApplicationServices.GetService<foo>();
app._foo.load(hostApplicationLifetime.ApplicationStopping);