コード例 #1
0
        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));
                }
            }
        }