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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with 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. */
/* -------------------------------------------------------------------------- */
#ifndef VIRTUAL_MACHINE_MANAGER_DRIVER_H_
#define VIRTUAL_MACHINE_MANAGER_DRIVER_H_
#include <map>
#include <string>
#include <sstream>
#include "Mad.h"
#include "VirtualMachinePool.h"
using namespace std;
/**
* VirtualMachineManagerDriver provides a base class to implement VM Manager
* Drivers. This class implements the protocol and recover functions
* from the Mad interface. Classes derived from the VirtualMachineManagerDriver
* must implement the deployment function to generate specific VM
* deployment information for the unerlying MAD.
*/
class VirtualMachineManagerDriver : public Mad
{
public:
VirtualMachineManagerDriver(
int userid,
const map<string,string>& attrs,
bool sudo,
VirtualMachinePool * pool);
virtual ~VirtualMachineManagerDriver(){};
/**
* Implements the VM Manager driver protocol.
* @param message the string read from the driver
*/
void protocol(
string& message);
/**
* TODO: What do we need here? just poll the active VMs to recover
* connections? Or an specific recover action from the MAD?
*/
void recover();
/**
* Generates a driver-specific deployment file:
* @param vm pointer to a virtual machine
* @param file_name to generate the deployment description
* @return 0 on success
*/
virtual int deployment_description(
const VirtualMachine * vm,
const string& file_name) const = 0;
protected:
/**
* Gets a configuration attr from driver configuration file (single
* version)
* @param name of config attribute
* @param value of the attribute
*/
void get_default(
const char * name,
string& value) const
{
string sn = name;
driver_conf.get(sn,value);
}
/**
* Gets a configuration attr from driver configuration file (vector
* version)
* @param name of config vector attribute for the domain
* @param vname of the attribute
* @param value of the attribute
*/
void get_default(
const char * name,
const char * vname,
string& value) const;
private:
/**
* Configuration file for the driver
*/
Template driver_conf;
/**
* Pointer to the Virtual Machine Pool, to access VMs
*/
VirtualMachinePool * vmpool;
friend class VirtualMachineManager;
/**
* Sends a deploy request to the MAD: "DEPLOY ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void deploy (
const int oid,
const string& drv_msg) const;
/**
* Sends a shutdown request to the MAD: "SHUTDOWN ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void shutdown (
const int oid,
const string& drv_msg) const;
/**
* Sends a reboot request to the MAD: "REBOOT ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void reboot (
const int oid,
const string& drv_msg) const;
/**
* Sends a cancel request to the MAD: "CANCEL ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void cancel (
const int oid,
const string& drv_msg) const;
/**
* Sends a checkpoint request to the MAD: "CHECKPOINT ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void checkpoint (
const int oid,
const string& drv_msg) const;
/**
* Sends a save request to the MAD: "SAVE ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void save (
const int oid,
const string& drv_msg) const;
/**
* Sends a save request to the MAD: "RESTORE ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void restore (
const int oid,
const string& drv_msg) const;
/**
* Sends a migrate request to the MAD: "MIGRATE ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void migrate (
const int oid,
const string& drv_msg) const;
/**
* Sends a poll request to the MAD: "POLL ID XML_DRV_MSG"
* @param oid the virtual machine id.
* @param drv_msg xml data for the mad operation
*/
void poll (
const int oid,
const string& drv_msg) const;
};
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
#endif /*VIRTUAL_MACHINE_MANAGER_DRIVER_H_*/
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