mirror of
https://github.com/OpenNebula/one.git
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343 lines
9.9 KiB
C++
343 lines
9.9 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2013, OpenNebula Project (OpenNebula.org), C12G Labs */
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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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int _vm_limit,
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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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CANCEL_PREVIOUS,
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CLEANUP,
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CLEANUP_BOTH,
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CLEANUP_PREVIOUS,
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MIGRATE,
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RESTORE,
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REBOOT,
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RESET,
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POLL,
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TIMER,
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DRIVER_CANCEL,
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FINALIZE,
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ATTACH,
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DETACH
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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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virtual 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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* Virtual Machine polling limit
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*/
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int vm_limit;
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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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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(0,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 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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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(0,_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 to format a VMM Driver message in the form:
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* <VMM_DRIVER_ACTION_DATA>
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* <HOST> hostname </HOST>
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* <NET_DRV> net_drv </NET_DRV>
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* <MIGR_HOST> m_hostname </MIGR_HOST>
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* <MIGR_NET_DRV> m_net_drv </MIGR_NET_DRV>
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* <DOMAIN> domain_id </DOMAIN>
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* <DEPLOYMENT_FILE> dfile </DEPLOYMENT_FILE>
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* <CHECKPOINT_FILE> cfile </CHECKPOINT_FILE>
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* <VM>
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* VM representation in XML
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* </VM>
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* </VMM_DRIVER_ACTION_DATA>
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*
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* @param hostname of the host to perform the action
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* @param net_drv name of the vlan driver
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* @param m_hostname name of the host to migrate the VM
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* @param m_net_drv name of the vlan driver
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* @param domain domain id as returned by the hypervisor
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* @param dfile deployment file to boot the VM
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* @param cfile checkpoint file to save the VM
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* @param disk_id Disk to attach/detach, if any
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* @param tm_command Transfer Manager command to attach/detach, if any
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* @param disk_target_path Path of the disk to attach, if any
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* @param tmpl the VM information in XML
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*/
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string * format_message(
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const string& hostname,
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const string& net_drv,
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const string& m_hostname,
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const string& m_net_drv,
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const string& domain,
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const string& ldfile,
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const string& rdfile,
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const string& cfile,
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const string& tm_command,
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const string& disk_target_path,
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const string& tmpl);
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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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* Cancels a VM (in the previous host) when a CANCEL action is received.
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* Note that the domain-id is the last one returned by a boot action
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* @param vid the id of the VM.
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*/
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void cancel_previous_action(
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int vid);
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/**
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* Cleanups a host (cancel VM + delete disk images).
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* @param vid the id of the VM.
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* @param cancel_previous if true the VM will be canceled in the previous
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* host (only relevant to delete VM's in MIGRATE state)
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*/
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void cleanup_action(
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int vid, bool cancel_previous);
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/**
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* Cleanups the previous host (cancel VM + delete disk images).
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* @param vid the id of the VM.
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*/
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void cleanup_previous_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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* Reboots a running VM.
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* @param vid the id of the VM.
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*/
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void reboot_action(
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int vid);
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/**
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* Resets a running VM.
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* @param vid the id of the VM.
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*/
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void reset_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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* Attaches a new disk to a VM. The VM must have a disk with the
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* attribute ATTACH = YES
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* @param vid the id of the VM.
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*/
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void attach_action(
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int vid);
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/**
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* Detaches a disk from a VM. The VM must have a disk with the
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* attribute ATTACH = YES
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* @param vid the id of the VM.
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*/
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void detach_action(
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int vid);
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/**
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* This function cancels the current driver operation
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*/
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void driver_cancel_action(
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int vid);
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};
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#endif /*VIRTUAL_MACHINE_MANAGER_H*/
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