public void Run(string uri)
{
// Declaration of all the pipeline blocks
GetTopStoriesBlock getTopStories = new GetTopStoriesBlock();
FilterTopStoriesBlock filterTopStories = new FilterTopStoriesBlock();
TraverseTopStoriesCommentsBlock traverseTopStoriesComments = new TraverseTopStoriesCommentsBlock();
ComputeTopCommentsPerStoryBlock computeTopCommentsPerStory = new ComputeTopCommentsPerStoryBlock();
// Links and interactions betwen each block
getTopStories.block.LinkTo(filterTopStories.block, this.linkOptions);
filterTopStories.bufferBlock.LinkTo(traverseTopStoriesComments.block, linkOptions);
traverseTopStoriesComments.bufferBlock.LinkTo(computeTopCommentsPerStory.block, linkOptions);
// Triggering the start of the pipeline
getTopStories.block.Post(uri);
getTopStories.block.Complete();
// Buffer at the end of the pipeline
var receiveAllStories = Task.Run(() =>
{
for (int i = 0; i <= Constants.NBSTORIES; i++)
{
this.topStories.Add(computeTopCommentsPerStory.bufferBlock.Receive()); // Wait for all the Top Story objects to arrive
}
});
Task.WaitAll(receiveAllStories);
computeTopCommentsPerStory.bufferBlock.Complete(); //End of the pipeline
commentsRegistry = traverseTopStoriesComments.commentsRegistry;
printResults();
}
public void GetTopStoriesBlock()
{
string uri = "https://hacker-news.firebaseio.com/v0/topstories.json";
var linkOptions = new DataflowLinkOptions {
PropagateCompletion = true
};
BufferBlock <Queue <string> > bufferBlock = new BufferBlock <Queue <string> >();
GetTopStoriesBlock getTopStoriesBlock = new GetTopStoriesBlock();
getTopStoriesBlock.block.LinkTo(bufferBlock, linkOptions);
getTopStoriesBlock.block.Post(uri);
getTopStoriesBlock.block.Complete();
var result = bufferBlock.ReceiveAsync().Result;
Assert.IsNotNull(result);
}
