public IStore CreateStore(string storeLocation, PersistenceType storePersistenceType, bool readOnly)
{
Logging.LogInfo("Create Store {0} with persistence type {1}", storeLocation, storePersistenceType);
if (_persistenceManager.DirectoryExists(storeLocation))
{
throw new StoreManagerException(storeLocation, "Store already exists");
}
_persistenceManager.CreateDirectory(storeLocation);
var dataFilePath = Path.Combine(storeLocation, DataFileName);
_persistenceManager.CreateFile(dataFilePath);
var resourceFilePath = Path.Combine(storeLocation, ResourceFileName);
_persistenceManager.CreateFile(resourceFilePath);
MasterFile.Create(_persistenceManager, storeLocation, _storeConfiguration, Guid.NewGuid());
IPageStore dataPageStore = null;
switch (storePersistenceType)
{
case PersistenceType.AppendOnly:
dataPageStore = new AppendOnlyFilePageStore(_persistenceManager, dataFilePath, PageSize, false, _storeConfiguration.DisableBackgroundWrites);
break;
case PersistenceType.Rewrite:
dataPageStore = new BinaryFilePageStore(_persistenceManager, dataFilePath, PageSize, false, 0);
break;
}
IPageStore resourcePageStore = new AppendOnlyFilePageStore(_persistenceManager, resourceFilePath, PageSize, false, _storeConfiguration.DisableBackgroundWrites);
var resourceTable = new ResourceTable(resourcePageStore);
using (var store = new Store(storeLocation, dataPageStore, resourceTable))
{
store.Commit(Guid.Empty);
}
Logging.LogInfo("Store created at {0}", storeLocation);
return OpenStore(storeLocation, readOnly);
}
public IStore OpenStore(string storeLocation, bool readOnly)
{
Logging.LogInfo("Open Store {0}", storeLocation);
var masterFile = MasterFile.Open(_persistenceManager, storeLocation);
var latestCommitPoint = masterFile.GetLatestCommitPoint();
var dataFilePath = Path.Combine(storeLocation, DataFileName);
var resourceFilePath = Path.Combine(storeLocation, ResourceFileName);
if (_persistenceManager.FileExists(dataFilePath))
{
IPageStore dataPageStore = null;
switch (masterFile.PersistenceType)
{
case PersistenceType.AppendOnly:
dataPageStore = new AppendOnlyFilePageStore(_persistenceManager, dataFilePath, PageSize, readOnly, _storeConfiguration.DisableBackgroundWrites);
break;
case PersistenceType.Rewrite:
dataPageStore = new BinaryFilePageStore(_persistenceManager, dataFilePath, PageSize, readOnly, latestCommitPoint.CommitNumber);
break;
}
var resourcePageStore = new AppendOnlyFilePageStore(_persistenceManager, resourceFilePath, PageSize, readOnly, _storeConfiguration.DisableBackgroundWrites);
var resourceTable = new ResourceTable(resourcePageStore);
var store = new Store(storeLocation, dataPageStore, resourceTable, latestCommitPoint.LocationOffset, null);
Logging.LogInfo("Store {0} opened successfully", storeLocation);
return store;
}
throw new StoreManagerException(storeLocation, "Data file not found");
}
/// <summary>
/// Opens the store at the specified commit point (always read-only)
/// </summary>
/// <param name="storeLocation"></param>
/// <param name="commitPointId"></param>
/// <returns></returns>
public IStore OpenStore(string storeLocation, ulong commitPointId)
{
if (_storeConfiguration.PersistenceType == PersistenceType.Rewrite)
{
throw new InvalidOperationException("Rewrite page store does not support opening at a previous commit point");
}
Logging.LogInfo("Open Store {0} at commit point {1}", storeLocation, commitPointId);
var dataFilePath = Path.Combine(storeLocation, DataFileName);
var resourceFilePath = Path.Combine(storeLocation, ResourceFileName);
var commitPoint = GetMasterFile(storeLocation).GetCommitPoints().FirstOrDefault(cp => cp.LocationOffset == commitPointId);
if (commitPoint != null)
{
if (!_persistenceManager.FileExists(resourceFilePath))
{
throw new StoreManagerException(storeLocation, "Resource file not found");
}
if (!_persistenceManager.FileExists(dataFilePath))
{
throw new StoreManagerException(storeLocation, "Data file not found");
}
var pageStore = new AppendOnlyFilePageStore(_persistenceManager, dataFilePath, PageSize, true, _storeConfiguration.DisableBackgroundWrites);
var resourceStore = new AppendOnlyFilePageStore(_persistenceManager, resourceFilePath, PageSize, true, _storeConfiguration.DisableBackgroundWrites);
var resourceTable = new ResourceTable(resourceStore);
var store = new Store(storeLocation, pageStore, resourceTable, commitPointId, null);
return store;
}
throw new StoreManagerException(storeLocation, "Commit point not found");
}
