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one/include/QuotaVirtualMachine.h
2012-06-22 01:33:48 +02:00

97 lines
3.2 KiB
C++

/* -------------------------------------------------------------------------- */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with the License. You may obtain */
/* a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* -------------------------------------------------------------------------- */
#ifndef QUOTA_VIRTUALMACHINE_H_
#define QUOTA_VIRTUALMACHINE_H_
#include "Quota.h"
/**
* VM Quotas, defined as:
* VM = [
* VMS = <Max. number of VMs>
* MEMORY = <Max. number of MB requested by VMs>
* CPU = <Max. number of CPU units requested by VMs>
* VMS_USED = Current number of VMs
* MEMORY_USED = Overall Memory requested
* CPU_USED = Overall CPU requested
* ]
*
* 0 = unlimited, default if missing
*/
class QuotaVirtualMachine : public Quota
{
public:
QuotaVirtualMachine():Quota("VM_QUOTA",
"VM",
VM_METRICS,
NUM_VM_METRICS)
{};
~QuotaVirtualMachine(){};
/**
* Check if the resource allocation will exceed the quota limits. If not
* the usage counters are updated
* @param tmpl template for the resource
* @param error string
* @return true if the operation can be performed
*/
bool check(Template* tmpl, string& error);
/**
* Decrement usage counters when deallocating image
* @param tmpl template for the resource
*/
void del(Template* tmpl);
protected:
/**
* Gets a quota, overrides base to not to use ID.
* @param id of the quota, ignored
* @param va The quota
*
* @return a pointer to the quota or 0 if not found
*/
int get_quota(const string& id, VectorAttribute **va);
/**
* Gets a quota, overrides base to not to use ID.
*
* @param id of the quota, ignored
* @param va The quota
* @param it The quota iterator, if it is found
*
* @return 0 on success, -1 if not found
*/
int get_quota(
const string& id,
VectorAttribute **va,
map<string, Attribute *>::iterator& it)
{
it = attributes.begin();
return get_quota(id, va);
}
static const char * VM_METRICS[];
static const int NUM_VM_METRICS;
};
#endif /*QUOTA_VIRTUALMACHINE_H_*/