public void BackupCurrentDb(Dictionary <string, MixerClip> db, ClipMine adder, int currentDbVersion)
{
adder.SetStatus("Backing up to historian...");
try
{
// Convert the current map to a list.
List <MixerClip> clips = new List <MixerClip>();
foreach (KeyValuePair <string, MixerClip> k in db)
{
clips.Add(k.Value);
}
// Seralize our current database.
HistorianBackup backup = new HistorianBackup()
{
database = clips,
Version = currentDbVersion
};
string json = JsonConvert.SerializeObject(backup);
// Try to get the history file
CloudBlockBlob blob = GetHistoryFile();
if (blob == null)
{
Logger.Info("Failed to get history blob.");
return;
}
// Write the json to the file.
blob.UploadText(json);
}
catch (Exception e)
{
Logger.Error("Exception in historian write db", e);
}
}
public void AttemptToRestore(ClipMine adder, int currentDbVersion)
{
adder.SetStatus("Attempting to restore from historian...");
DateTime start = DateTime.Now;
try
{
// Look for a history file
CloudBlockBlob cloudBlockBlob = GetHistoryFile();
if (cloudBlockBlob == null)
{
adder.SetStatus("Failed to get history file...");
Logger.Info($"Failed to get history file.");
return;
}
if (!cloudBlockBlob.Exists())
{
Logger.Info($"No history file exits.");
return;
}
adder.SetStatus("Found history, downloading...");
// Download and deseralize.
HistorianBackup backup = null;
using (var stream = new MemoryStream())
{
cloudBlockBlob.DownloadToStream(stream);
stream.Position = 0;
var serializer = new JsonSerializer();
using (var sr = new StreamReader(stream))
{
using (var jsonTextReader = new JsonTextReader(sr))
{
backup = serializer.Deserialize <HistorianBackup>(jsonTextReader);
}
}
}
if (backup == null)
{
Logger.Info("Failed to get or deseralize old history file.");
return;
}
if (backup.Version != currentDbVersion)
{
Logger.Info("History file found, but the verison doesn't match ours.");
return;
}
adder.SetStatus("History is good, restoring...");
// Push the database in!
adder.AddToClipMine(backup.database, (DateTime.Now - start), true);
}
catch (Exception e)
{
Logger.Error("Exception thrown in historian restore.", e);
}
}