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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 TRANSFER_MANAGER_H_
#define TRANSFER_MANAGER_H_
#include "MadManager.h"
#include "ActionManager.h"
#include "VirtualMachinePool.h"
#include "LifeCycleManager.h"
#include "TransferManagerDriver.h"
using namespace std;
extern "C" void * tm_action_loop(void *arg);
class TransferManager : public MadManager, public ActionListener
{
public:
TransferManager(
VirtualMachinePool * _vmpool,
HostPool * _hpool,
vector<const Attribute*>& _mads):
MadManager(_mads),
vmpool(_vmpool),
hpool(_hpool)
{
am.addListener(this);
};
~TransferManager(){};
enum Actions
{
PROLOG,
PROLOG_MIGR,
PROLOG_RESUME,
EPILOG,
EPILOG_STOP,
EPILOG_DELETE,
EPILOG_DELETE_PREVIOUS,
CHECKPOINT,
DRIVER_CANCEL,
FINALIZE
};
/**
* Triggers specific actions to the Information Manager. This function
* wraps the ActionManager trigger function.
* @param action the IM action
* @param vid VM unique id. This is the argument of the passed to the
* invoked action.
*/
virtual void trigger(
Actions action,
int vid);
/**
* This functions starts the associated listener thread, and creates a
* new thread for the Information Manager. This thread will wait in
* an action loop till it receives ACTION_FINALIZE.
* @return 0 on success.
*/
int start();
/**
* Loads Virtual Machine Manager Mads defined in configuration file
* @param uid of the user executing the driver. When uid is 0 the nebula
* identity will be used. Otherwise the Mad will be loaded through the
* sudo application.
*/
void load_mads(int uid);
/**
* Gets the thread identification.
* @return pthread_t for the manager thread (that in the action loop).
*/
pthread_t get_thread_id() const
{
return tm_thread;
};
private:
/**
* Thread id for the Transfer Manager
*/
pthread_t tm_thread;
/**
* Pointer to the Virtual Machine Pool, to access VMs
*/
VirtualMachinePool * vmpool;
/**
* Pointer to the Host Pool, to access hosts
*/
HostPool * hpool;
/**
* Action engine for the Manager
*/
ActionManager am;
/**
* Generic name for the TransferManager driver
*/
static const char * transfer_driver_name;
/**
* Returns a pointer to a Transfer Manager driver.
* @param name of an attribute of the driver (e.g. its type)
* @param value of the attribute
* @return the TM driver owned by uid with attribute name equal to value
* or 0 in not found
*/
const TransferManagerDriver * get(
const string& name,
const string& value)
{
return static_cast<const TransferManagerDriver *>
(MadManager::get(0,name,value));
};
/**
* Returns a pointer to a Transfer Manager driver. The driver is
* searched by its name.
* @param name the name of the driver
* @return the TM driver owned by uid with attribute name equal to value
* or 0 in not found
*/
const TransferManagerDriver * get(
const string& name)
{
string _name("NAME");
return static_cast<const TransferManagerDriver *>
(MadManager::get(0,_name,name));
};
/**
* Returns a pointer to a Transfer Manager driver. The driver is
* searched by its name.
* @return the TM driver for the Transfer Manager
*/
const TransferManagerDriver * get()
{
string _name("NAME");
return static_cast<const TransferManagerDriver *>
(MadManager::get(0,_name,transfer_driver_name));
};
/**
* Function to execute the Manager action loop method within a new pthread
* (requires C linkage)
*/
friend void * tm_action_loop(void *arg);
/**
* The action function executed when an action is triggered.
* @param action the name of the action
* @param arg arguments for the action function
*/
void do_action(
const string & action,
void * arg);
/**
* This function starts the prolog sequence
*/
void prolog_action(int vid);
/**
* This function starts the prolog migration sequence
*/
void prolog_migr_action(int vid);
/**
* This function starts the prolog resume sequence
*/
void prolog_resume_action(int vid);
/**
* This function starts the epilog sequence
*/
void epilog_action(int vid);
/**
* This function starts the epilog_stop sequence
*/
void epilog_stop_action(int vid);
/**
* This function starts the epilog_delete sequence
*/
void epilog_delete_action(int vid);
/**
* This function starts the epilog_delete sequence on the previous host
*/
void epilog_delete_previous_action(int vid);
/**
* This function starts the epilog sequence
*/
void checkpoint_action(int vid);
/**
* This function cancels the operation being performed by the driver
*/
void driver_cancel_action(int vid);
};
#endif /*TRANSFER_MANAGER_H*/
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