mirror of
https://github.com/OpenNebula/one.git
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92b17d4eef
Solved some history timer issues Improved life-cycle (address ticket #4) Solved a couple of deadlocks in some RequestManager methods git-svn-id: http://svn.opennebula.org/trunk@9 3034c82b-c49b-4eb3-8279-a7acafdc01c0
232 lines
6.8 KiB
C++
232 lines
6.8 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 VIRTUAL_MACHINE_MANAGER_H_
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#define VIRTUAL_MACHINE_MANAGER_H_
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#include "MadManager.h"
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#include "ActionManager.h"
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#include "VirtualMachineManagerDriver.h"
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#include "VirtualMachinePool.h"
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#include "HostPool.h"
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#include "NebulaTemplate.h"
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using namespace std;
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extern "C" void * vmm_action_loop(void *arg);
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class VirtualMachineManager : public MadManager, public ActionListener
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{
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public:
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VirtualMachineManager(
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VirtualMachinePool * _vmpool,
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HostPool * _hpool,
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time_t _timer_period,
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time_t _poll_period,
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vector<const Attribute*>& _mads);
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~VirtualMachineManager(){};
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enum Actions
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{
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DEPLOY,
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SAVE,
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SHUTDOWN,
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CANCEL,
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MIGRATE,
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RESTORE,
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POLL,
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TIMER,
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FINALIZE
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};
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/**
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* Triggers specific actions to the Virtual Machine Manager. This function
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* wraps the ActionManager trigger function.
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* @param action the VMM 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 Virtual Machine 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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* 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 vmm_thread;
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};
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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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private:
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/**
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* Thread id for the Virtual Machine Manager
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*/
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pthread_t vmm_thread;
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/**
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* Pointer to the Virtual Machine Pool, to access VMs
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*/
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VirtualMachinePool * vmpool;
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/**
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* Pointer to the Host Pool, to access hosts
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*/
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HostPool * hpool;
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/**
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* Timer period for the Virtual Machine Manager.
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*/
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time_t timer_period;
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/**
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* Virtual Machine polling interval
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*/
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time_t poll_period;
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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 * vmm_action_loop(void *arg);
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/**
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* Returns a pointer to a Virtual Machine Manager driver.
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* @param uid of the owner of the driver
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* @param name of an attribute of the driver (e.g. its type)
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* @param value of the attribute
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* @return the VM driver owned by uid with attribute name equal to value
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* or 0 in not found
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*/
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const VirtualMachineManagerDriver * get(
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int uid,
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const string& name,
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const string& value)
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{
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return static_cast<const VirtualMachineManagerDriver *>
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(MadManager::get(uid,name,value));
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};
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/**
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* Returns a pointer to a Virtual Machine Manager driver. The driver is
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* searched by its name.
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* @param uid of the owner of the driver
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* @param name the name of the driver
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* @return the VM driver owned by uid with attribute name equal to value
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* or 0 in not found
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*/
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const VirtualMachineManagerDriver * get(
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int uid,
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const string& name)
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{
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string _name("NAME");
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return static_cast<const VirtualMachineManagerDriver *>
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(MadManager::get(uid,_name,name));
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};
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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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* Function executed when a DEPLOY action is received. It deploys a VM on
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* a Host.
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* @param vid the id of the VM to be deployed.
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*/
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void deploy_action(
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int vid);
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/**
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* Function to stop a running VM and generate a checkpoint file. This
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* function is executed when a SAVE action is triggered.
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* @param vid the id of the VM.
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*/
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void save_action(
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int vid);
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/**
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* Shutdowns a VM when a SHUTDOWN action is received.
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* @param vid the id of the VM.
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*/
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void shutdown_action(
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int vid);
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/**
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* Cancels a VM when a CANCEL action is received.
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* @param vid the id of the VM.
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*/
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void cancel_action(
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int vid);
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/**
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* Function to migrate (live) a VM (MIGRATE action).
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* @param vid the id of the VM.
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*/
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void migrate_action(
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int vid);
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/**
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* Restores a VM from a checkpoint file.
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* @param vid the id of the VM.
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*/
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void restore_action(
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int vid);
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/**
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* Polls a VM.
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* @param vid the id of the VM.
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*/
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void poll_action(
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int vid);
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/**
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* This function is executed periodically to poll the running VMs
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*/
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void timer_action();
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};
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#endif /*VIRTUAL_MACHINE_MANAGER_H*/
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