public static async Task InitDrive(
CancellationToken ct = default(CancellationToken),
DriveProgressHandler inprogress = null,
DriveProgressHandler done = null)
{
try
{
inprogress?.Invoke("Loading Cache...");
using (await DriveLock.LockAsync())
{
DriveTree.Clear();
RecordData cache = null;
await Task.Run(() =>
{
cache = LoadFromBinaryFile(cachefile);
}, ct);
inprogress?.Invoke("Restore tree...");
await Task.Run(() =>
{
ConstructDriveTree(cache);
}, ct);
}
await GetChanges(checkpoint : checkpoint, ct : ct, inprogress : inprogress, done : done);
done?.Invoke("Changes Loaded.");
}
catch
{
// Load Root
await GetChanges(ct : ct, inprogress : inprogress, done : done);
}
}
public static async Task <FileMetadata_Info[]> GetChanges(
string checkpoint = null,
CancellationToken ct = default(CancellationToken),
DriveProgressHandler inprogress = null,
DriveProgressHandler done = null)
{
List <FileMetadata_Info> ret = new List <FileMetadata_Info>();
inprogress?.Invoke("Loading Changes...");
using (await DriveLock.LockAsync())
{
if (checkpoint == null)
{
DriveTree.Clear();
}
historydata.Clear();
while (!ct.IsCancellationRequested)
{
Changes_Info[] history = null;
int retry = 6;
while (--retry > 0)
{
try
{
history = await Drive.changes(checkpoint : checkpoint, ct : ct);
break;
}
catch (Exception ex)
{
Config.Log.LogOut("[GetChanges] " + ex.Message);
}
}
if (history == null)
{
break;
}
foreach (var h in history)
{
if (!(h.end ?? false))
{
if (h.nodes.Count() > 0)
{
ConstructDriveTree(h.nodes);
ret.AddRange(h.nodes);
historydata.AddRange(h.nodes);
}
DriveData.checkpoint = h.checkpoint;
checkpoint = h.checkpoint;
}
}
if ((history.FirstOrDefault()?.nodes.Count() ?? 0) == 0 &&
(history.LastOrDefault()?.end ?? false))
{
break;
}
}
done?.Invoke("Changes Loaded.");
return(ret.ToArray());
}
}