/// <inheritdoc />
protected override BoolResult RestoreCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
var nextActiveSlot = GetNextSlot(_activeSlot);
var newStoreLocation = GetStoreLocation(nextActiveSlot);
Tracer.Info(context.TracingContext, $"Loading content location database checkpoint from '{checkpointDirectory}' into '{newStoreLocation}'.");
if (Directory.Exists(newStoreLocation))
{
FileUtilities.DeleteDirectoryContents(newStoreLocation, deleteRootDirectory: true);
}
Directory.Move(checkpointDirectory.ToString(), newStoreLocation);
var possiblyLoaded = Load(context, nextActiveSlot);
if (possiblyLoaded.Succeeded)
{
SaveActiveSlot(context.TracingContext);
}
return(possiblyLoaded);
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Restore checkpoint failed."));
}
}
protected override BoolResult RestoreCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
var activeSlot = _activeSlot;
var newActiveSlot = GetNextSlot(activeSlot);
var newStoreLocation = GetStoreLocation(newActiveSlot);
Tracer.Info(context.TracingContext, $"Loading content location database checkpoint from '{checkpointDirectory}' into '{newStoreLocation}'.");
if (Directory.Exists(newStoreLocation))
{
FileUtilities.DeleteDirectoryContents(newStoreLocation, deleteRootDirectory: true);
}
Directory.Move(checkpointDirectory.ToString(), newStoreLocation);
var possiblyLoaded = Load(context, newActiveSlot, clean: false);
if (possiblyLoaded.Succeeded)
{
SaveActiveSlot(context.TracingContext);
}
// At this point in time, we have unloaded the old database and loaded the new one. This means we're
// free to backup the old one's logs.
var oldStoreLocation = GetStoreLocation(activeSlot);
return(possiblyLoaded);
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Restore checkpoint failed."));
}
}
protected override BoolResult SaveCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
if (IsStoredEpochInvalid(out var storedEpoch))
{
SetGlobalEntry(nameof(GlobalKeys.StoredEpoch), _configuration.Epoch);
Tracer.Info(context.TracingContext, $"Updated stored epoch from '{storedEpoch}' to '{_configuration.Epoch}'.");
}
var targetDirectory = checkpointDirectory.ToString();
Tracer.Info(context.TracingContext, $"Saving content location database checkpoint to '{targetDirectory}'.");
if (Directory.Exists(targetDirectory))
{
FileUtilities.DeleteDirectoryContents(targetDirectory, deleteRootDirectory: true);
}
return(_keyValueStore.Use(store => store.SaveCheckpoint(targetDirectory)).ToBoolResult());
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Save checkpoint failed."));
}
}
/// <inheritdoc />
protected override BoolResult SaveCheckpointCore(OperationContext context, AbsolutePath checkpointDirectory)
{
try
{
var targetDirectory = checkpointDirectory.ToString();
Tracer.Info(context.TracingContext, $"Saving content location database checkpoint to '{targetDirectory}'.");
if (Directory.Exists(targetDirectory))
{
FileUtilities.DeleteDirectoryContents(targetDirectory, deleteRootDirectory: true);
}
return(_keyValueStore.Use(store => store.SaveCheckpoint(targetDirectory)).ToBoolResult());
}
catch (Exception ex) when(ex.IsRecoverableIoException())
{
return(new BoolResult(ex, "Save checkpoint failed."));
}
}