// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License.  Citrix Systems, Inc.
// reserves all rights not expressly granted by the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.vm;

import com.cloud.utils.Pair;
import com.cloud.vm.SystemVmLoadScanner.AfterScanAction;

public interface SystemVmLoadScanHandler<T> {
	String getScanHandlerName();
	boolean canScan();

	void onScanStart();
	
	T[] getScannablePools();
	boolean isPoolReadyForScan(T pool);
	Pair<AfterScanAction, Object> scanPool(T pool);
	void expandPool(T pool, Object actionArgs);
	void shrinkPool(T pool, Object actionArgs);
	
	void onScanEnd();
}