mirror of
https://github.com/OpenNebula/one.git
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116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2008, Distributed Systems Architecture Group, Universidad */
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/* Complutense de Madrid (dsa-research.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 FIXED_LEASES_H_
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#define FIXED_LEASES_H_
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#include "Leases.h"
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using namespace std;
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/**
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* The FixedLeases class represents a pool of fixed IP-MAC leases. A lease can
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* be either a IP (the MAC is then PREFIX:IP) or the IP and MAC addresses. The
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* pool is read from a template file, each lease is in the form:
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* LEASE = [ IP = "<the ip>", MAC = "<the mac>"]
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*/
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class FixedLeases : public Leases
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{
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public:
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/**
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* Create a FixedLeases from template
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*/
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FixedLeases(SqliteDB * db,
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int _oid,
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unsigned int _mac_prefix,
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vector<const Attribute*>& vector_leases);
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/**
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* Create a plain FixedLeases, you can populate the lease pool using
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* select()
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*/
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FixedLeases(SqliteDB * db,
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int _oid,
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unsigned int _mac_prefix):
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Leases(db,_oid,0),
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mac_prefix(_mac_prefix),
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current(leases.begin()){};
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~FixedLeases(){};
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/**
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* Returns an unused lease, which becomes used
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* @param vid identifier of the VM getting this lease
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* @param ip ip of the returned lease
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* @param mac mac of the returned lease
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* @return 0 if success
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*/
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int get(int vid, string& ip, string& mac);
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/**
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* Release an used lease, which becomes unused
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* @param ip of the lease in use
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*/
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void release(const string& ip)
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{
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del(ip);
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}
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/**
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* Loads the leases from the DB.
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*/
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int select(SqliteDB * db)
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{
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//Read the leases from the DB
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int rc = Leases::select(db);
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//Update the size
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size = leases.size();
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return rc;
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}
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private:
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/**
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* The default MAC prefix for the OpenNebula cluster
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*/
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unsigned int mac_prefix;
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/**
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* Current lease pointer
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*/
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map<unsigned int, Lease *>::iterator current;
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/**
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* Add a lease, from the Lease interface
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* @param ip ip of the lease
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* @param mac mac of the lease
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* @param vid identifier of the VM getting this lease
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* @return 0 if success
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*/
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int add(const string& ip, const string& mac, int vid, bool used=true);
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/**
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* Remove a lease, from the Lease interface
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* @param db pointer to DB
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* @param ip ip of the lease to be deleted
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* @return 0 if success
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*/
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int del(const string& ip);
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};
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#endif /*FIXED_LEASES_H_*/
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