one/include/QuotaNetwork.h

/* -------------------------------------------------------------------------- */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org)             */
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/* 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                                                   */
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/* 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,          */
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/* limitations under the License.                                             */
/* -------------------------------------------------------------------------- */

#ifndef QUOTA_NETWORK_H_
#define QUOTA_NETWORK_H_

#include "Quota.h"

/**
 *  DataStore Quotas, defined as:
 *    NETWORK = [
 *        ID     = <ID of the datastore>
 *        LEASES = <Max. number of IPs that can be leased from net>
 *        LEASES_USED = Current number of IPs
 *    ]
 *
 *   0 = unlimited, default if missing
 */

class QuotaNetwork :  public Quota
{
public:
    
    QuotaNetwork():Quota("NETWORK_QUOTA",
                         "NETWORK",
                         NET_METRICS, 
                         NUM_NET_METRICS)
    {};

    ~QuotaNetwork(){};

    /**
     *  Check if the resource allocation will exceed the quota limits. If not 
     *  the usage counters are updated
     *    @param tmpl template for the resource
     *    @param default_quotas Quotas that contain the default limits
     *    @param error string 
     *    @return true if the operation can be performed
     */
    bool check(Template* tmpl, Quotas& default_quotas, string& error);

    /**
     *  Decrement usage counters when deallocating image
     *    @param tmpl template for the resource
     */
    void del(Template* tmpl);

protected:

    /**
     * Gets the default quota identified by its ID.
     *
     *    @param id of the quota
     *    @param default_quotas Quotas that contain the default limits
     *    @param va The quota, if it is found
     *
     *    @return 0 on success, -1 if not found
     */
    int get_default_quota(const string& id,
                        Quotas& default_quotas,
                        VectorAttribute **va);

    static const char * NET_METRICS[];

    static const int NUM_NET_METRICS;
};

#endif /*QUOTA_NETWORK_H_*/