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138 lines
4.1 KiB
C++
138 lines
4.1 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2008, Distributed Systems Architecture Group, Universidad */
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/* Complutense de Madrid (dsa-research.org) */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef TRANSFER_MANAGER_H_
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#define TRANSFER_MANAGER_H_
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#include "MadManager.h"
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#include "ActionManager.h"
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#include "VirtualMachinePool.h"
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#include "LifeCycleManager.h"
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using namespace std;
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extern "C" void * tm_action_loop(void *arg);
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class TransferManager : public MadManager, public ActionListener
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{
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public:
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TransferManager(
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VirtualMachinePool * pool,
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vector<const Attribute*>& _mads):
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MadManager(_mads),
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hpool(pool)
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{
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am.addListener(this);
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};
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~TransferManager(){};
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enum Actions
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{
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PROLOG,
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EPILOG,
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CHECKPOINT,
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FINALIZE
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};
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/**
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* Triggers specific actions to the Information Manager. This function
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* wraps the ActionManager trigger function.
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* @param action the IM action
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* @param vid VM unique id. This is the argument of the passed to the
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* invoked action.
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*/
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void trigger(
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Actions action,
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int vid);
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/**
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* This functions starts the associated listener thread, and creates a
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* new thread for the Information Manager. This thread will wait in
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* an action loop till it receives ACTION_FINALIZE.
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* @return 0 on success.
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*/
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int start();
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/**
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* Loads Virtual Machine Manager Mads defined in configuration file
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* @param uid of the user executing the driver. When uid is 0 the nebula
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* identity will be used. Otherwise the Mad will be loaded through the
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* sudo application.
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*/
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void load_mads(int uid){};
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/**
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* Gets the thread identification.
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* @return pthread_t for the manager thread (that in the action loop).
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*/
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pthread_t get_thread_id() const
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{
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return tm_thread;
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};
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private:
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/**
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* Thread id for the Transfer Manager
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*/
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pthread_t tm_thread;
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/**
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* Pointer to the VM Pool, to access virtual machines
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*/
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VirtualMachinePool * hpool;
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/**
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* Action engine for the Manager
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*/
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ActionManager am;
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/**
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* Function to execute the Manager action loop method within a new pthread
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* (requires C linkage)
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*/
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friend void * tm_action_loop(void *arg);
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/**
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* The action function executed when an action is triggered.
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* @param action the name of the action
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* @param arg arguments for the action function
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*/
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void do_action(
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const string & action,
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void * arg);
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/**
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* This function starts the prolog sequence
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*/
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void prolog_action(int vid);
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/**
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* This function starts the epilog sequence
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*/
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void epilog_action(int vid);
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/**
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* This function starts the epilog sequence
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*/
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void checkpoint_action(int vid);
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};
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#endif /*TRANSFER_MANAGER_H*/
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