mirror of
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195 lines
5.3 KiB
C++
195 lines
5.3 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2015, OpenNebula Project, OpenNebula Systems */
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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 INFORMATION_MANAGER_H_
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#define INFORMATION_MANAGER_H_
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#include "MadManager.h"
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#include "ActionManager.h"
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#include "InformationManagerDriver.h"
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#include "MonitorThread.h"
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using namespace std;
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extern "C" void * im_action_loop(void *arg);
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class HostPool;
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class ClusterPool;
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class InformationManager : public MadManager, public ActionListener
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{
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public:
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InformationManager(
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HostPool * _hpool,
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ClusterPool * _clpool,
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time_t _timer_period,
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time_t _monitor_period,
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int _host_limit,
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int _monitor_threads,
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const string& _remotes_location,
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vector<const Attribute*>& _mads)
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:MadManager(_mads),
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hpool(_hpool),
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clpool(_clpool),
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timer_period(_timer_period),
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monitor_period(_monitor_period),
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host_limit(_host_limit),
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remotes_location(_remotes_location),
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mtpool(_monitor_threads)
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{
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am.addListener(this);
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};
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~InformationManager(){};
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enum Actions
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{
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STOPMONITOR /** Sent by the RM when a host is deleted **/
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};
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/**
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* Triggers specific actions to the Information Manager.
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* @param action the IM action
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* @param hid Host 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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* 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 im_thread;
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};
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/**
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*
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*/
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int 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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void stop_monitor(int hid);
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private:
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/**
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* Thread id for the Information Manager
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*/
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pthread_t im_thread;
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/**
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* Pointer to the Host Pool
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*/
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HostPool * hpool;
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/**
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* Pointer to the Cluster Pool
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*/
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ClusterPool * clpool;
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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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* Host monitoring interval
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*/
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time_t monitor_period;
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/**
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* Host monitoring limit
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*/
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int host_limit;
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/**
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* Path for the remote action programs
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*/
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string remotes_location;
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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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* Pool of threads to process each monitor message
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*/
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MonitorThreadPool mtpool;
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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 * im_action_loop(void *arg);
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/**
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* Time in seconds to expire a monitoring action (5 minutes)
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*/
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static const time_t monitor_expire;
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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 gwadmin with uid=0.
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* @param name of the driver
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* @return the VM 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 InformationManagerDriver * 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 InformationManagerDriver *>
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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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* This function is executed periodically to monitor Nebula hosts.
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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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