// 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.hypervisor.xen.resource;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import javax.ejb.Local;

import org.apache.log4j.Logger;
import org.apache.xmlrpc.XmlRpcException;

import com.cloud.agent.api.Answer;
import com.cloud.agent.api.Command;
import com.cloud.agent.api.NetworkUsageAnswer;
import com.cloud.agent.api.NetworkUsageCommand;
import com.cloud.resource.ServerResource;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.utils.script.Script;
import com.xensource.xenapi.Connection;
import com.xensource.xenapi.VM;
import com.xensource.xenapi.Types.XenAPIException;

@Local(value=ServerResource.class)
public class XcpServerResource extends CitrixResourceBase {
	  private final static Logger s_logger = Logger.getLogger(XcpServerResource.class);
	  
    public XcpServerResource() {
        super();
    }
    
    @Override
    public Answer executeRequest(Command cmd) {
        if (cmd instanceof NetworkUsageCommand) {
            return execute((NetworkUsageCommand) cmd);
        } else {
            return super.executeRequest(cmd);
        }
    }
    
    @Override
    protected String getGuestOsType(String stdType, boolean bootFromCD) {
        return CitrixHelper.getXcpGuestOsType(stdType);
    }

    @Override
    protected List<File> getPatchFiles() {
        List<File> files = new ArrayList<File>();
        String patch = "scripts/vm/hypervisor/xenserver/xcpserver/patch";
        String patchfilePath = Script.findScript("", patch);
        if (patchfilePath == null) {
            throw new CloudRuntimeException("Unable to find patch file " + patch);
        }
        File file = new File(patchfilePath);
        files.add(file);
        return files;
    }

    @Override
    protected void setMemory(Connection conn, VM vm, long memsize) throws XmlRpcException, XenAPIException {

        vm.setMemoryStaticMin(conn, 33554432L);
        vm.setMemoryDynamicMin(conn, 33554432L);
        vm.setMemoryDynamicMax(conn, 33554432L);
        vm.setMemoryStaticMax(conn, 33554432L);

        vm.setMemoryStaticMax(conn, memsize);
        vm.setMemoryDynamicMax(conn, memsize);
        vm.setMemoryDynamicMin(conn, memsize);
        vm.setMemoryStaticMin(conn, memsize);
    }
    

    protected NetworkUsageAnswer execute(NetworkUsageCommand cmd) {
        try {
            Connection conn = getConnection();
            if(cmd.getOption()!=null && cmd.getOption().equals("create") ){
                String result = networkUsage(conn, cmd.getPrivateIP(), "create", null);
                NetworkUsageAnswer answer = new NetworkUsageAnswer(cmd, result, 0L, 0L);
                return answer;
            }
            long[] stats = getNetworkStats(conn, cmd.getPrivateIP());
            NetworkUsageAnswer answer = new NetworkUsageAnswer(cmd, "", stats[0], stats[1]);
            return answer;
        } catch (Exception ex) {
            s_logger.warn("Failed to get network usage stats due to ", ex);
            return new NetworkUsageAnswer(cmd, ex); 
        }
    }

    
}