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127 lines
4.3 KiB
C++
127 lines
4.3 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2014, 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 QUOTA_VIRTUALMACHINE_H_
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#define QUOTA_VIRTUALMACHINE_H_
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#include "Quota.h"
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/**
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* VM Quotas, defined as:
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* VM = [
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* VMS = <Max. number of VMs>
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* MEMORY = <Max. number of MB requested by VMs>
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* CPU = <Max. number of CPU units requested by VMs>
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* VOLATILE_SIZE = <Max. number of volatile disk MB>
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* VMS_USED = Current number of VMs
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* MEMORY_USED = Overall Memory requested
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* CPU_USED = Overall CPU requested
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* VOLATILE_SIZE_USED = <Max. number of volatile disk MB>
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* ]
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*
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* 0 = unlimited, default if missing
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*/
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class QuotaVirtualMachine : public Quota
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{
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public:
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QuotaVirtualMachine(bool is_default):
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Quota("VM_QUOTA",
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"VM",
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VM_METRICS,
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NUM_VM_METRICS,
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is_default)
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{};
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~QuotaVirtualMachine(){};
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/**
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* Check if the resource allocation will exceed the quota limits. If not
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* the usage counters are updated
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* @param tmpl template for the resource
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* @param default_quotas Quotas that contain the default limits
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* @param error string
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* @return true if the operation can be performed
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*/
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bool check(Template* tmpl, Quotas& default_quotas, string& error);
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/**
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* Check if the resource update (change in MEMORY or CPU) will exceed the
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* quota limits. If not the usage counters are updated
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* @param tmpl with increments in MEMORY and CPU
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* @param default_quotas Quotas that contain the default limits
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* @param error string
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* @return true if the operation can be performed
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*/
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bool update(Template * tmpl, Quotas& default_quotas, string& error);
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/**
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* Decrement usage counters when deallocating image
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* @param tmpl template for the resource
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*/
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void del(Template* tmpl);
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/**
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* Gets a quota, overrides base to not to use ID.
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* @param id of the quota, ignored
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* @param va The quota
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*
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* @return a pointer to the quota or 0 if not found
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*/
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int get_quota(const string& id, VectorAttribute **va);
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protected:
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/**
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* Gets a quota, overrides base to not to use ID.
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*
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* @param id of the quota, ignored
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* @param va The quota
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* @param it The quota iterator, if it is found
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*
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* @return 0 on success, -1 if not found
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*/
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int get_quota(
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const string& id,
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VectorAttribute **va,
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map<string, Attribute *>::iterator& it)
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{
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it = attributes.begin();
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return get_quota(id, va);
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}
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/**
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* Gets the default quota identified by its ID.
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*
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* @param id of the quota
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* @param default_quotas Quotas that contain the default limits
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* @param va The quota, if it is found
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*
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* @return 0 on success, -1 if not found
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*/
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int get_default_quota(
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const string& id,
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Quotas& default_quotas,
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VectorAttribute **va);
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static const char * VM_METRICS[];
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static const int NUM_VM_METRICS;
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};
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#endif /*QUOTA_VIRTUALMACHINE_H_*/
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