private IList<LocalRemotePair> PrepareSigPairs(SignatureManifest signatureManifest)
{
var remoteSignatures = signatureManifest.Signatures;
var localSignatures = localSignatureRepository.GetByFileName().ToList();
var length = Math.Min(remoteSignatures.Count, localSignatures.Count);
var remoteSignatureNames = remoteSignatures.Skip(remoteSignatures.Count - length).Take(length).Select(item => item.Name).ToList();
var localSignatureNames = localSignatures.Skip(localSignatures.Count - length).Take(length).Select(item => item.Name).ToList();
return localSignatureNames.Zip(remoteSignatureNames,
(local, remote) => new LocalRemotePair { Local = local, Remote = remote }).ToList();
}
public Task<SignatureManifest> GetSignatureManifestAsync(DataInfo dataInfo)
{
return Task.Factory.StartNew(() =>
{
signatureBuidInProgress.GetOrAdd(dataInfo.Name, new ReaderWriterLockSlim())
.EnterUpgradeableReadLock();
IEnumerable<SignatureInfo> signatureInfos = null;
try
{
var lastUpdate = _signatureRepository.GetLastUpdate();
if (lastUpdate == null || lastUpdate < dataInfo.LastModified)
{
signatureBuidInProgress.GetOrAdd(dataInfo.Name, new ReaderWriterLockSlim())
.EnterWriteLock();
try
{
signatureInfos = PrepareSignatures(dataInfo.Name);
}
finally
{
signatureBuidInProgress.GetOrAdd(dataInfo.Name, new ReaderWriterLockSlim())
.ExitWriteLock();
}
}
else
{
signatureInfos = _signatureRepository.GetByFileName();
}
}
finally
{
signatureBuidInProgress.GetOrAdd(dataInfo.Name, new ReaderWriterLockSlim())
.ExitUpgradeableReadLock();
}
var result = new SignatureManifest
{
FileLength = dataInfo.Length,
FileName = dataInfo.Name,
Signatures = SignatureInfosToSignatures(signatureInfos)
};
return result;
});
}
private async Task<SynchronizationReport> SynchronizeTo(ISynchronizationServerClient synchronizationServerClient,
ISignatureRepository localSignatureRepository,
ISignatureRepository remoteSignatureRepository,
SignatureManifest sourceSignatureManifest,
SignatureManifest destinationSignatureManifest)
{
var seedSignatureInfo = SignatureInfo.Parse(destinationSignatureManifest.Signatures.Last().Name);
var sourceSignatureInfo = SignatureInfo.Parse(sourceSignatureManifest.Signatures.Last().Name);
using (var localFile = StorageStream.Reading(Storage, FileName))
{
IList<RdcNeed> needList;
using (var needListGenerator = new NeedListGenerator(remoteSignatureRepository, localSignatureRepository))
{
needList = needListGenerator.CreateNeedsList(seedSignatureInfo, sourceSignatureInfo, Cts.Token);
}
return await PushByUsingMultipartRequest(synchronizationServerClient, localFile, needList);
}
}