public async Task RunWithoutChannelsButConcurrentAsync()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
// Get all posts
var generator = new ThumbnailGenerator();
var tasks = new List <Task>();
var postPaths = Directory.GetFiles(Constants.PostsDirectory);
foreach (var postPath in postPaths)
{
tasks.Add(new Func <Task>(async() =>
{
var frontMatter = await generator.ReadFrontMatterAsync(postPath);
if (frontMatter == null)
{
return;
}
var cardImage = await generator.CreateImageAsync(frontMatter);
await generator.SaveImageAsync(cardImage, Path.GetFileNameWithoutExtension(postPath) + ".png");
}).Invoke());
}
await Task.WhenAll(tasks);
stopwatch.Stop();
_outputHelper.WriteLine("Completed in {0}", stopwatch.Elapsed);
}
public async Task RunWithoutChannelsAsync()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
// Get all posts
var generator = new ThumbnailGenerator();
var postPaths = Directory.GetFiles(Constants.PostsDirectory);
foreach (var postPath in postPaths)
{
var frontMatter = await generator.ReadFrontMatterAsync(postPath);
if (frontMatter == null)
{
continue;
}
var cardImage = await generator.CreateImageAsync(frontMatter);
await generator.SaveImageAsync(cardImage, Path.GetFileName(postPath) + ".png");
}
stopwatch.Stop();
_outputHelper.WriteLine("Completed in {0}", stopwatch.Elapsed);
}
public async Task RunWithChannelsAsync()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
var generator = new ThumbnailGenerator();
await Channel
.CreateBounded <string>(50000)
.Source(Directory.GetFiles(Constants.PostsDirectory))
.PipeAsync(
maxConcurrency: 2,
capacity: 100,
transform: async postPath =>
{
var frontMatter = await generator.ReadFrontMatterAsync(postPath);
return(postPath, frontMatter);
})
.Filter(tuple => tuple.Item2 != null)
.PipeAsync(
maxConcurrency: 10,
capacity: 20,
transform: async tuple =>
{
var(postPath, frontMatter) = tuple;
var cardImage = await generator.CreateImageAsync(frontMatter !);
return(postPath, frontMatter, cardImage);
})
.ReadAllAsync(async tuple =>
{
var(postPath, _, cardImage) = tuple;
await generator.SaveImageAsync(cardImage, Path.GetFileName(postPath) + ".png");
});
stopwatch.Stop();
_outputHelper.WriteLine("Completed in {0}", stopwatch.Elapsed);
}
