/// <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)
{
// Now actually update the shard.
return(ts.ExecuteOperation(
StoreOperationRequestBuilder.SpUpdateShardLocal,
StoreOperationRequestBuilder.UpdateShardLocal(this.Id, _shardMap, _shardNew)));
}
/// <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)
{
// Adds back the removed shard entries.
return(ts.ExecuteOperation(
StoreOperationRequestBuilder.SpUpdateShardLocal,
StoreOperationRequestBuilder.UpdateShardLocal(this.Id, _shardMap, _shardOld)));
}
/// <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)
{
// There should already be some version of LSM at this location as RecoveryMAnager.AttachShard() first reads existing shard maps from this location.
IStoreResults checkResult = ts.ExecuteCommandSingle(SqlUtils.CheckIfExistsLocalScript.Single());
Debug.Assert(checkResult.StoreVersion != null);
// Upgrade local shard map to latest version before attaching.
ts.ExecuteCommandBatch(SqlUtils.FilterUpgradeCommands(SqlUtils.UpgradeLocalScript, GlobalConstants.LsmVersionClient, checkResult.StoreVersion.Version));
// Now update the shards table in LSM.
return(ts.ExecuteOperation(
StoreOperationRequestBuilder.SpUpdateShardLocal,
StoreOperationRequestBuilder.UpdateShardLocal(this.Id, _shardMap, _shard)));
}
