/// <summary>
/// Performs the LSM operation on the source shard.
/// </summary>
/// <param name="ts">Transaction scope.</param>
/// <returns>Result of the operation.</returns>
public override IStoreResults DoLocalSourceExecute(IStoreTransactionScope ts)
{
IStoreResults result;
if (_updateLocation)
{
result = ts.ExecuteOperation(
StoreOperationRequestBuilder.SpBulkOperationShardMappingsLocal,
StoreOperationRequestBuilder.RemoveShardMappingLocal(
this.Id,
false,
_shardMap,
_mappingSource));
}
else
{
result = ts.ExecuteOperation(
StoreOperationRequestBuilder.SpBulkOperationShardMappingsLocal,
StoreOperationRequestBuilder.UpdateShardMappingLocal(
this.Id,
false,
_shardMap,
_mappingSource,
_mappingTarget));
}
// We need to treat the kill connection operation separately, the reason
// being that we cannot perform kill operations within a transaction.
if (result.Result == StoreResult.Success && _fromOnlineToOffline)
{
this.KillConnectionsOnSourceShard();
}
return(result);
}
/// <summary>
/// Performs the undo of LSM operation on the source shard.
/// </summary>
/// <param name="ts">Transaction scope.</param>
/// <returns>Result of the operation.</returns>
public override IStoreResults UndoLocalSourceExecute(IStoreTransactionScope ts)
{
DefaultStoreMapping dsmSource = new DefaultStoreMapping(
_mappingSource.Id,
_shardMap.Id,
new DefaultStoreShard(
_mappingSource.StoreShard.Id,
this.OriginalShardVersionRemoves,
_shardMap.Id,
_mappingSource.StoreShard.Location,
_mappingSource.StoreShard.Status),
_mappingSource.MinValue,
_mappingSource.MaxValue,
_mappingSource.Status,
_lockOwnerId);
if (_updateLocation)
{
return(ts.ExecuteOperation(
StoreOperationRequestBuilder.SpBulkOperationShardMappingsLocal,
StoreOperationRequestBuilder.AddShardMappingLocal(
this.Id,
true,
_shardMap,
dsmSource)));
}
else
{
DefaultStoreMapping dsmTarget = new DefaultStoreMapping(
_mappingTarget.Id,
_shardMap.Id,
new DefaultStoreShard(
_mappingTarget.StoreShard.Id,
this.OriginalShardVersionRemoves,
_shardMap.Id,
_mappingTarget.StoreShard.Location,
_mappingTarget.StoreShard.Status),
_mappingTarget.MinValue,
_mappingTarget.MaxValue,
_mappingTarget.Status,
_lockOwnerId);
return(ts.ExecuteOperation(
StoreOperationRequestBuilder.SpBulkOperationShardMappingsLocal,
StoreOperationRequestBuilder.UpdateShardMappingLocal(
this.Id,
true,
_shardMap,
dsmTarget,
dsmSource)));
}
}
