private static async Task Run(AppOptions options)
{
Console.WriteLine($"Use '{options.SelectedStrategy}' strategy");
using var cts = new CancellationTokenSource();
Console.CancelKeyPress += (sender, eventArgs) =>
{
Console.WriteLine("Cancel event triggered");
cts.Cancel();
eventArgs.Cancel = true;
};
Console.WriteLine("Press Ctrl+C to exit...");
IResultFormatter resultFormatter = new SimpleResultFormatter();
IResultSaver resultSaver = new TextFileResultSaver(options.OutputFile, resultFormatter);
using var httpClientFactory = new HttpClientFactoryWithTimeoutHandle();
WebCrawlerStrategy crawlerStrategy = options.SelectedStrategy switch
{
AppOptions.Strategy.TasksDataflow => new TasksDataflowWebCrawlerStrategy(httpClientFactory, options,
resultSaver),
AppOptions.Strategy.ParallelLinq => new ParallelLinqWebCrawlerStrategy(httpClientFactory, options,
resultSaver),
AppOptions.Strategy.ParallelForEach => new ParallelForEachWebCrawlerStrategy(httpClientFactory, options,
resultSaver),
AppOptions.Strategy.Partitioner => new PartitionerWebCrawlerStrategy(httpClientFactory, options,
resultSaver),
AppOptions.Strategy.AsyncEnumerable => new AsyncEnumerableStrategy(httpClientFactory, options,
resultSaver),
_ => throw new NotImplementedException($"Not implemented strategy: {options.SelectedStrategy}")
};
await new App(crawlerStrategy)
.Run(cts.Token)
.ConfigureAwait(false);
Console.WriteLine("Finished...");
}
}
public App(WebCrawlerStrategy webCrawlerStrategy) => _webCrawlerStrategy = webCrawlerStrategy;
