/// <summary>
/// Demonstrates how to run (and stop) an infinite worker, using a dead man's switch
/// </summary>
public static async Task Main()
{
// This example uses NLog, but it only requires a trivial amount of code to use any other logging library
var loggerFactory = new NLoggerFactory();
var infiniteRunner = InfiniteDeadManSwitchRunner.Create(loggerFactory);
var worker = new ExampleInfiniteWorker();
using (var cancellationTokenSource = new CancellationTokenSource())
{
var options = new DeadManSwitchOptions
{
Timeout = TimeSpan.FromSeconds(60)
};
// do not await this, it will never complete until you cancel the token
var run = infiniteRunner.RunAsync(worker, options, cancellationTokenSource.Token);
// let it run for 10s.
await Task.Delay(TimeSpan.FromSeconds(10), cancellationTokenSource.Token).ConfigureAwait(false);
// now stop the infinite worker
cancellationTokenSource.Cancel();
// let it finish gracefully
await run.ConfigureAwait(false);
}
}
/// <summary>
/// Adds the dead man's switch to the provided <see cref="IServiceCollection"/>
/// </summary>
public static IServiceCollection AddDeadManSwitch(this IServiceCollection serviceCollection)
{
serviceCollection.AddSingleton <IDeadManSwitchLoggerFactory, DeadManSwitchLoggerFactory>();
serviceCollection.AddSingleton(sp => DeadManSwitchRunner.Create(sp.GetRequiredService <IDeadManSwitchLoggerFactory>()));
serviceCollection.AddSingleton(sp => InfiniteDeadManSwitchRunner.Create(sp.GetRequiredService <IDeadManSwitchLoggerFactory>()));
return(serviceCollection);
}
public DeadManSwitchBenchmarks()
{
_deadManSwitchRunner = DeadManSwitchRunner.Create();
_infiniteDeadManSwitchRunner = InfiniteDeadManSwitchRunner.Create();
_deadManSwitchOptions = new DeadManSwitchOptions
{
Timeout = TimeSpan.FromSeconds(1),
NumberOfNotificationsToKeep = 5
};
}
public TestsForInfiniteDeadManSwitchRunner(ITestOutputHelper testOutputHelper)
{
var logger = new LoggerConfiguration()
.MinimumLevel.Verbose()
.Enrich.FromLogContext()
.Enrich.WithThreadId()
.WriteTo.TestOutput(testOutputHelper,
outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff} [{Level:w5}] #{ThreadId,-3} {SourceContext} {Message}{NewLine}{Exception}")
.CreateLogger();
_loggerFactory = LoggerFactory.Create(builder => { builder.AddSerilog(logger); });
var loggerFactory = new TestLoggerFactory(_loggerFactory);
_logger = _loggerFactory.CreateLogger <TestsForInfiniteDeadManSwitchRunner>();
_sessionFactory = new CapturingDeadManSwitchSessionFactory(new DeadManSwitchSessionFactory(loggerFactory));
_runner = new InfiniteDeadManSwitchRunner(loggerFactory.CreateLogger <InfiniteDeadManSwitchRunner>(), _sessionFactory);
}
