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125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.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 HOOK_MANAGER_H_
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#define HOOK_MANAGER_H_
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#include "MadManager.h"
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#include "ActionManager.h"
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#include "HookManagerDriver.h"
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#include "VirtualMachinePool.h"
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using namespace std;
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extern "C" void * hm_action_loop(void *arg);
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class HookManager : public MadManager, public ActionListener
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{
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public:
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HookManager(vector<const Attribute*>& _mads, VirtualMachinePool * _vmpool)
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:MadManager(_mads),vmpool(_vmpool)
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{
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am.addListener(this);
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};
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~HookManager(){};
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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 Hook 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 HookManager 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 hm_thread;
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};
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/**
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*
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*/
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void load_mads(int uid=0);
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/**
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*
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*/
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void finalize()
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{
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am.trigger(ACTION_FINALIZE,0);
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};
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/**
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* Returns a pointer to a Information Manager MAD. The driver is
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* searched by its name and owned by oneadmin with uid=0.
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* @param name of the driver
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* @return the Hook driver owned by uid 0, with attribute "NAME" equal to
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* name or 0 in not found
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*/
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const HookManagerDriver * get()
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{
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string name("NAME");
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return static_cast<const HookManagerDriver *>
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(MadManager::get(0,name,hook_driver_name));
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};
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private:
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/**
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* Generic name for the Hook driver
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*/
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static const char * hook_driver_name;
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/**
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* Pointer to the VirtualMachine Pool
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*/
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VirtualMachinePool * vmpool;
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/**
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* Thread id for the HookManager
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*/
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pthread_t hm_thread;
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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 * hm_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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#endif /*HOOK_MANAGER_H*/
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