OnOpenPhysicalLogAsync(
string pathToCommonContainer,
Guid physicalLogId,
bool isStagingLog,
CancellationToken cancellationToken)
{
Requires.Argument("pathToCommonContainer", pathToCommonContainer).NotNull();
IPhysicalLog result = null;
await _Lock.WaitUntilSetAsync(cancellationToken).ConfigureAwait(false);
try
{
PhysicalLog subjectLog;
if (_Logs.TryGetValue(physicalLogId, out subjectLog) == false)
{
// P.Log has not been opened yet- attempt to open its underpinnings
var underlyingContainer = await _AppDomainPhysLogManager.OpenLogContainerAsync(
pathToCommonContainer,
isStagingLog?Guid.Empty : physicalLogId,
cancellationToken).ConfigureAwait(false);
Exception caughtException = null;
try
{
subjectLog = new PhysicalLog(physicalLogId, underlyingContainer);
_Logs.Add(physicalLogId, subjectLog);
subjectLog.IsOpen = true;
result = await subjectLog.OnCreateHandle(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
// Cause clean up failed create
caughtException = ex;
}
if (caughtException != null)
{
// clean up failed create and forward the causing exception
if (subjectLog != null)
{
subjectLog.IsOpen = false;
_Logs.Remove(physicalLogId);
}
try
{
await underlyingContainer.CloseAsync(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
AppTrace.TraceSource.WriteInfo(TraceType, "OnOpenPhysicalLogAsync - CloseAsync: Exception {0}", ex);
}
throw caughtException;
}
}
else
{
// Already open - just alias with another handle
result = await subjectLog.OnCreateHandle(cancellationToken).ConfigureAwait(false);
}
}
finally
{
_Lock.Set();
}
return(result);
}
OnCreatePhysicalLogAsync(
string pathToCommonContainer,
Guid physicalLogId,
long containerSize,
uint maximumNumberStreams,
uint maximumLogicalLogBlockSize,
LogManager.LogCreationFlags CreationFlags,
CancellationToken cancellationToken)
{
Requires.Argument("pathToCommonContainer", pathToCommonContainer).NotNull();
IPhysicalLog result = null;
await _Lock.WaitUntilSetAsync(cancellationToken).ConfigureAwait(false);
try
{
PhysicalLog subjectLog;
if (_Logs.TryGetValue(physicalLogId, out subjectLog) == false)
{
// P.Log has not been opened or created - attempt to create it
var underlyingContainer = await _AppDomainPhysLogManager.CreateContainerAsync(
pathToCommonContainer,
physicalLogId,
containerSize,
maximumNumberStreams,
maximumLogicalLogBlockSize,
CreationFlags,
cancellationToken).ConfigureAwait(false);
Exception caughtException = null;
try
{
// Make and "open" PhysicalLog representing the underlying IPhysicalLogContainer
subjectLog = new PhysicalLog(physicalLogId, underlyingContainer);
_Logs.Add(physicalLogId, subjectLog);
subjectLog.IsOpen = true;
result = await subjectLog.OnCreateHandle(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
// Cause clean up failed create
caughtException = ex;
}
if (caughtException != null)
{
// clean up failed - create and forward the causing exception
if (subjectLog != null)
{
subjectLog.IsOpen = false;
_Logs.Remove(physicalLogId);
}
try
{
await underlyingContainer.CloseAsync(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
AppTrace.TraceSource.WriteInfo(TraceType, "OnCreatePhysicalLogAsync - CloseAsync: Exception {0}", ex);
}
try
{
await underlyingContainer.DeletePhysicalLogStreamAsync(physicalLogId, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
AppTrace.TraceSource.WriteInfo(TraceType, "OnCreatePhysicalLogAsync - DeletePhysicalLogStreamAsync: Exception {0}", ex);
}
throw caughtException;
}
}
else
{
// Have an existing physical log with this id already - fault
throw new UnauthorizedAccessException(SR.Error_PhysicalLog_Exists);
}
}
finally
{
_Lock.Set();
}
return(result);
}
