public SynchronizationWorkItem DetermineWork(string file, RavenJObject localMetadata, RavenJObject destinationMetadata, string localServerUrl, out NoSyncReason reason)
{
reason = NoSyncReason.Unknown;
if (localMetadata == null)
{
reason = NoSyncReason.SourceFileNotExist;
return null;
}
if (destinationMetadata != null && destinationMetadata[SynchronizationConstants.RavenSynchronizationConflict] != null && destinationMetadata[SynchronizationConstants.RavenSynchronizationConflictResolution] == null)
{
reason = NoSyncReason.DestinationFileConflicted;
return null;
}
if (localMetadata[SynchronizationConstants.RavenSynchronizationConflict] != null)
{
reason = NoSyncReason.SourceFileConflicted;
return null;
}
if (localMetadata[SynchronizationConstants.RavenDeleteMarker] != null)
{
if (localMetadata.ContainsKey(SynchronizationConstants.RavenRenameFile))
{
var rename = localMetadata.Value<string>(SynchronizationConstants.RavenRenameFile);
if (destinationMetadata != null)
return new RenameWorkItem(file, rename, localServerUrl, storage);
return new ContentUpdateWorkItem(rename, localServerUrl, storage, sigGenerator);
// we have a rename tombstone but file does not exists on destination
}
return new DeleteWorkItem(file, localServerUrl, storage);
}
if (destinationMetadata != null && Historian.IsDirectChildOfCurrent(localMetadata, destinationMetadata))
{
reason = NoSyncReason.ContainedInDestinationHistory;
return null;
}
// file exists on dest and has the same content
if (destinationMetadata != null && localMetadata.Value<string>("Content-MD5") == destinationMetadata.Value<string>("Content-MD5"))
{
// check metadata to detect if any synchronization is needed
if (localMetadata.Keys.Except(new[] { Constants.MetadataEtagField, Constants.RavenLastModified, Constants.LastModified })
.Any(key => !destinationMetadata.ContainsKey(key) || localMetadata[key] != destinationMetadata[key]))
{
return new MetadataUpdateWorkItem(file, localServerUrl, destinationMetadata, storage);
}
reason = NoSyncReason.SameContentAndMetadata;
return null; // the same content and metadata - no need to synchronize
}
return new ContentUpdateWorkItem(file, localServerUrl, storage, sigGenerator);
}
public SynchronizationWorkItem DetermineWork(string file, RavenJObject localMetadata, RavenJObject destinationMetadata, string localServerUrl, out NoSyncReason reason)
{
reason = NoSyncReason.Unknown;
if (localMetadata == null)
{
reason = NoSyncReason.SourceFileNotExist;
return(null);
}
if (destinationMetadata != null && destinationMetadata[SynchronizationConstants.RavenSynchronizationConflict] != null && destinationMetadata[SynchronizationConstants.RavenSynchronizationConflictResolution] == null)
{
reason = NoSyncReason.DestinationFileConflicted;
return(null);
}
if (localMetadata[SynchronizationConstants.RavenSynchronizationConflict] != null)
{
reason = NoSyncReason.SourceFileConflicted;
return(null);
}
if (localMetadata[SynchronizationConstants.RavenDeleteMarker] != null)
{
if (localMetadata.ContainsKey(SynchronizationConstants.RavenRenameFile))
{
var rename = localMetadata.Value <string>(SynchronizationConstants.RavenRenameFile);
if (destinationMetadata != null)
{
return(new RenameWorkItem(file, rename, localServerUrl, storage));
}
return(new ContentUpdateWorkItem(rename, localServerUrl, storage, sigGenerator));
// we have a rename tombstone but file does not exists on destination
}
return(new DeleteWorkItem(file, localServerUrl, storage));
}
if (destinationMetadata != null && Historian.IsDirectChildOfCurrent(localMetadata, destinationMetadata))
{
reason = NoSyncReason.ContainedInDestinationHistory;
return(null);
}
// file exists on dest and has the same content
if (destinationMetadata != null && localMetadata.Value <string>("Content-MD5") == destinationMetadata.Value <string>("Content-MD5"))
{
// check metadata to detect if any synchronization is needed
if (localMetadata.Keys.Except(new[] { "ETag", "Last-Modified" })
.Any(key => !destinationMetadata.ContainsKey(key) || localMetadata[key] != destinationMetadata[key]))
{
return(new MetadataUpdateWorkItem(file, localServerUrl, destinationMetadata, storage));
}
reason = NoSyncReason.SameContentAndMetadata;
return(null); // the same content and metadata - no need to synchronize
}
return(new ContentUpdateWorkItem(file, localServerUrl, storage, sigGenerator));
}
