public async Task <Possible <string, Failure> > ProduceFileAsync(
CasHash hash,
string filename,
FileState fileState,
UrgencyHint urgencyHint,
Guid activityId)
{
Contract.Requires(!IsClosed);
Contract.Requires(filename != null);
using (var counter = m_counters.ProduceFileCounter())
{
using (var eventing = new ProduceFileActivity(BasicFilesystemCache.EventSource, activityId, this))
{
eventing.Start(hash, filename, fileState, urgencyHint);
try
{
FileUtilities.CreateDirectory(Path.GetDirectoryName(filename));
await m_cache.CopyFromCasAsync(hash, filename);
counter.FileSize(new FileInfo(filename).Length);
}
catch (Exception e)
{
counter.Fail();
return(eventing.StopFailure(new ProduceFileFailure(CacheId, hash, filename, e)));
}
return(eventing.Returns(filename));
}
}
}