private bool TryCreateEsentStorage(string workingFolderPath, string solutionPath, out AbstractPersistentStorage esentStorage)
{
esentStorage = null;
EsentPersistentStorage esent = null;
try
{
esent = new EsentPersistentStorage(_optionService, workingFolderPath, solutionPath, this.Release);
esent.Initialize();
esentStorage = esent;
return(true);
}
catch (EsentAccessDeniedException ex)
{
// esent db is already in use by someone.
if (esent != null)
{
esent.Close();
}
EsentLogger.LogException(ex);
return(false);
}
catch (Exception ex)
{
if (esent != null)
{
esent.Close();
}
EsentLogger.LogException(ex);
}
try
{
if (esent != null)
{
Directory.Delete(esent.EsentDirectory, recursive: true);
}
}
catch
{
// somehow, we couldn't delete the directory.
}
return(false);
}
private IPersistentStorage GetStorage(Solution solution, string workingFolderPath)
{
lock (_lookupAccessLock)
{
// see whether we have something we can use
AbstractPersistentStorage storage;
if (_lookup.TryGetValue(solution.FilePath, out storage))
{
// previous attempt to create esent storage failed.
if (storage == null && !SolutionSizeAboveThreshold(solution))
{
return(NoOpPersistentStorageInstance);
}
// everything seems right, use what we have
if (storage?.WorkingFolderPath == workingFolderPath)
{
storage.AddRefUnsafe();
return(storage);
}
}
// either this is the first time, or working folder path has changed.
// remove existing one
_lookup.Remove(solution.FilePath);
var dbFile = EsentPersistentStorage.GetDatabaseFile(workingFolderPath);
if (!File.Exists(dbFile) && !SolutionSizeAboveThreshold(solution))
{
_lookup.Add(solution.FilePath, storage);
return(NoOpPersistentStorageInstance);
}
// try create new one
storage = TryCreateEsentStorage(workingFolderPath, solution.FilePath);
_lookup.Add(solution.FilePath, storage);
if (storage != null)
{
RegisterPrimarySolutionStorageIfNeeded(solution, storage);
storage.AddRefUnsafe();
return(storage);
}
return(NoOpPersistentStorageInstance);
}
}
