FirstFitRoutingAllocator.java

// 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.agent.manager.allocator.impl;

import java.util.ArrayList;
import java.util.List;
import javax.ejb.Local;
import org.apache.log4j.NDC;
import com.cloud.agent.manager.allocator.HostAllocator;
import com.cloud.deploy.DeploymentPlan;
import com.cloud.deploy.DeploymentPlanner.ExcludeList;
import com.cloud.host.Host;
import com.cloud.host.Host.Type;
import com.cloud.vm.VirtualMachine;
import com.cloud.vm.VirtualMachineProfile;

@Local(value={HostAllocator.class})
public class FirstFitRoutingAllocator extends FirstFitAllocator {
    @Override
    public List<Host> allocateTo(VirtualMachineProfile<? extends VirtualMachine> vmProfile, DeploymentPlan plan, Type type,
			ExcludeList avoid, int returnUpTo) {
        try {
            NDC.push("FirstFitRoutingAllocator");
            if (type != Host.Type.Routing) {
                // FirstFitRoutingAllocator is to find space on routing capable hosts only
                return new ArrayList<Host>();
            }
            //all hosts should be of type routing anyway.
            return super.allocateTo(vmProfile, plan, type, avoid, returnUpTo);
        } finally {
            NDC.pop();
        }
    }
}