mirror of
https://github.com/OpenNebula/one.git
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138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
/* ------------------------------------------------------------------------ */
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/* Copyright 2002-2011, 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 HOST_SHARE_H_
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#define HOST_SHARE_H_
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#include "ObjectXML.h"
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#include <time.h>
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using namespace std;
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/* ------------------------------------------------------------------------ */
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/* ------------------------------------------------------------------------ */
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/**
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* The HostShare class. It represents a logical partition of a host...
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*/
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class HostShare : public ObjectXML
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{
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public:
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HostShare(
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int _max_disk=0,
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int _max_mem=0,
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int _max_cpu=0);
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~HostShare(){};
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/**
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* Add a new VM to this share
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* @param cpu requested by the VM
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* @param mem requested by the VM
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* @param disk requested by the VM
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*/
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void add(int cpu, int mem, int disk)
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{
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cpu_usage += cpu;
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mem_usage += mem;
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disk_usage += disk;
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running_vms++;
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}
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/**
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* Delete a VM from this share
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* @param cpu requested by the VM
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* @param mem requested by the VM
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* @param disk requested by the VM
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*/
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void del(int cpu, int mem, int disk)
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{
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cpu_usage -= cpu;
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mem_usage -= mem;
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disk_usage -= disk;
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running_vms--;
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}
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/**
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* Check if this share can host a VM.
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* @param cpu requested by the VM
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* @param mem requested by the VM
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* @param disk requested by the VM
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*
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* @return true if the share can host the VM or it is the only one
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* configured
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*/
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bool test(int cpu, int mem, int disk) const
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{
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return (((max_cpu - cpu_usage ) >= cpu) &&
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((max_mem - mem_usage ) >= mem) &&
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((max_disk - disk_usage) >= disk));
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}
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/**
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* Function to write a HostShare to an output stream
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*/
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friend ostream& operator<<(ostream& os, HostShare& hs);
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/**
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* Function to print the HostShare object into a string in
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* XML format
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* @param xml the resulting XML string
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* @return a reference to the generated string
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*/
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string& to_xml(string& xml) const;
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private:
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int disk_usage; /**< Disk allocated to VMs (in Mb). */
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int mem_usage; /**< Memory allocated to VMs (in Mb) */
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int cpu_usage; /**< CPU allocated to VMs (in percentage) */
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int max_disk; /**< Total disk capacity (in Mb) */
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int max_mem; /**< Total memory capacity (in Mb) */
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int max_cpu; /**< Total cpu capacity (in percentage) */
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int free_disk; /**< Free disk from the IM monitor */
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int free_mem; /**< Free memory from the IM monitor */
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int free_cpu; /**< Free cpu from the IM monitor */
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int used_disk; /**< Used disk from the IM monitor */
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int used_mem; /**< Used memory from the IM monitor */
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int used_cpu; /**< Used cpu from the IM monitor */
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int running_vms;/**< Number of running VMs in this Host */
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// ----------------------------------------
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// Friends
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// ----------------------------------------
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friend class Host;
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friend class HostPool;
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/**
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* Rebuilds the object from an xml node
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* @param node The xml node pointer
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*
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* @return 0 on success, -1 otherwise
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*/
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int from_xml_node(const xmlNodePtr node);
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};
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#endif /*HOST_SHARE_H_*/
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