private void OnActionStart(SyncAction action)
{
if (this.ActionStart != null)
{
this.ActionStart(this, action);
}
}
public SyncActionType Choose(SyncAction action)
{
// With two way, the only way we can get a delete is if it's in
// a continuation state. Otherwise it's an initial scan and
// everything is real and new
if (action.Local != null && action.Local.IsDeleted && action.Remote != null && action.Remote.IsDeleted)
{
return(SyncActionType.None);
}
else if (action.Local != null && action.Local.IsDeleted)
{
return(SyncActionType.DeleteRemote);
}
else if (action.Remote != null && action.Remote.IsDeleted)
{
return(SyncActionType.DeleteLocal);
}
// Simple case of upload
if (action.Local != null && action.Remote == null)
{
return(SyncActionType.Upload);
}
// And download
if (action.Local == null && action.Remote != null)
{
return(SyncActionType.Download);
}
// To get here, both local and remote exist
if (action.Local.ServerRev == action.Remote.ServerRev)
{
return(SyncActionType.None);
}
// Conflict
switch (this.context.ConflictStrategy)
{
case ConflictStrategy.None:
return(SyncActionType.None);
case ConflictStrategy.LocalWin:
return(SyncActionType.Upload);
case ConflictStrategy.RemoteWin:
return(SyncActionType.Download);
case ConflictStrategy.LatestWin:
return(action.Local.LastModified > action.Remote.LastModified ?
SyncActionType.Upload :
SyncActionType.Download);
case ConflictStrategy.KeepBoth:
return(SyncActionType.KeepBoth);
}
throw new InvalidOperationException("Unknown");
}
public void ActionDelete(SyncAction action)
{
string sql = string.Format(@"delete from action where Type={0} and Path={1};",
DbController.ToParameter(action.Type.ToString()),
DbController.ToParameter(action.CommonPath));
this.dbController.ExecuteNonQuery(sql);
}
public void ActionWrite(SyncAction action)
{
this.ActionDelete(action);
string sql = string.Format(@"insert into action values ({0}, {1});",
DbController.ToParameter(action.Type.ToString()),
DbController.ToParameter(action.CommonPath));
this.dbController.ExecuteNonQuery(sql);
}
private void Add(FileItem file)
{
string key = this.Key(file);
if (this.IsExclusionMatch(key))
{
return;
}
lock (mutex)
{
SyncAction action = null;
if (this.ActionDictionary.ContainsKey(key))
{
action = this.ActionDictionary[key];
}
else
{
action = new SyncAction
{
CommonPath = this.Context.ToCommonPath(file),
LocalPath = this.Context.ToLocalPath(file),
RemotePath = this.Context.ToRemotePath(file)
};
this.ActionDictionary[action.Key] = action;
}
if (file.Source == FileService.Local)
{
if (action.Local != null)
{
throw new InvalidOperationException(
string.Format("Cannot add local file twice: {0}", action.LocalPath));
}
action.Local = file;
this.LocalFileCount++;
}
else
{
if (action.Remote != null)
{
throw new InvalidOperationException(
string.Format("Cannot add remote file twice: {0}", action.RemotePath));
}
action.Remote = file;
this.RemoteFileCount++;
}
}
}
private void OnActionComplete(SyncAction action)
{
this.ActionsCompleteCount++;
if (action.Type != SyncActionType.None)
{
if (action.Type == SyncActionType.Download)
{
this.DownloadedBytes += action.Size;
}
else if (action.Type == SyncActionType.Upload)
{
this.UploadedBytes += action.Size;
}
if (this.ActionComplete != null)
{
this.ActionComplete(this, action);
}
}
}
private async Task DoActionAsync(SyncAction action)
{
log.Debug("DoAction(" + action.Key + ")");
if (action.IsUnconstructed)
{
await action.Reconstruct(this.Context);
}
this.OnActionStart(action);
switch (action.Type)
{
case SyncActionType.DeleteLocal:
await this.Context.LocalFilesystem.DeleteAsync(action.LocalPath);
this.Context.LocalStorage.IndexDelete(action.LocalPath);
break;
case SyncActionType.Download:
if (action.Remote != null)
{
await this.Context.CloudService.DownloadAsync(action.Remote);
var item = this.Context.LocalFilesystem.ToFileItem(action.LocalPath);
if (item != null)
{
item.ServerRev = action.Remote.ServerRev;
this.Context.LocalStorage.IndexWrite(item);
}
}
else
{
log.WarnFormat("Remote file ({0}) no longer exists. Ignoring.", action.RemotePath);
}
break;
case SyncActionType.DeleteRemote:
await this.Context.CloudService.DeleteAsync(action.RemotePath);
this.Context.LocalStorage.IndexDelete(action.LocalPath);
break;
case SyncActionType.Upload:
if (action.Local != null)
{
await this.Context.CloudService.UploadAsync(action.Local);
this.Context.LocalStorage.IndexWrite(action.Local);
}
else
{
log.WarnFormat("Local file ({0}) no longer exists. Ignoring.", action.LocalPath);
this.Context.LocalStorage.IndexDelete(action.LocalPath);
}
break;
default:
throw new NotImplementedException();
}
this.Context.LocalStorage.ActionDelete(action);
this.OnActionComplete(action);
}
