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one/include/VirtualNetwork.h

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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2011, 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 VIRTUAL_NETWORK_H_
#define VIRTUAL_NETWORK_H_
#include "PoolSQL.h"
#include "Leases.h"
#include "VirtualNetworkTemplate.h"
#include <vector>
#include <string>
#include <map>
#include <time.h>
#include <sstream>
using namespace std;
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
/**
* The Virtual Network class. It represents a Virtual Network at manages its
* leases. One lease is formed by one IP and one MAC address.
* MAC address are derived from IP addresses.
*/
class VirtualNetwork : public PoolObjectSQL
{
public:
/**
* Possible types of networks
*/
enum NetworkType
{
UNINITIALIZED = -1,
RANGED = 0,
FIXED = 1
};
// *************************************************************************
// Virtual Network Public Methods
// *************************************************************************
/**
* Publish or unpublish a virtual network
* @param pub true to publish the image
* @return 0 on success
*/
void publish(bool pub)
{
if (pub == true)
{
public_obj = 1;
}
else
{
public_obj = 0;
}
}
/**
* Factory method for virtual network templates
*/
Template * get_new_template()
{
return new VirtualNetworkTemplate;
}
/**
* Adds Leases to the virtual network (Only implemented for FIXED networks)
* @param leases template in the form LEASES = [IP=XX, MAC=XX].
* MAC is optional. The template can only contain one LEASE
* definition.
* @param error_msg If the action fails, this message contains the reason.
* @return 0 on success
*/
int add_leases(VirtualNetworkTemplate * leases, string& error_msg);
/**
* Removes Leases from the virtual network; if they are not used.(Only
* implemented for FIXED networks)
* @param leases template in the form LEASES = [IP=XX].
* The template can only contain one LEASE definition.
* @param error_msg If the action fails, this message contains
* the reason.
* @return 0 on success
*/
int remove_leases(VirtualNetworkTemplate* leases, string& error_msg);
/**
* Holds a Lease, marking it as used
* @param leases template in the form LEASES = [IP=XX].
* The template can only contain one LEASE definition.
* @param error_msg If the action fails, this message contains the reason.
* @return 0 on success
*/
int hold_leases(VirtualNetworkTemplate * leases, string& error_msg);
/**
* Releases a Lease on hold
* @param leases template in the form LEASES = [IP=XX].
* The template can only contain one LEASE definition.
* @param error_msg If the action fails, this message contains
* the reason.
* @return 0 on success
*/
int free_leases(VirtualNetworkTemplate* leases, string& error_msg);
/**
* Gets a new lease for a specific VM
* @param vid VM identifier
* @param _ip pointer to string for IP to be stored into
* @param _mac pointer to string for MAC to be stored into
* @param _bridge name of the physical bridge this VN binds to
* @return 0 if success
*/
int get_lease(int vid, string& _ip, string& _mac, string& _bridge)
{
_bridge = bridge;
return leases->get(vid,_ip,_mac);
};
/**
* Asks for an specific lease of the given virtual network
* @param vid VM identifier
* @param _ip the ip of the requested lease
* @param _mac pointer to string for MAC to be stored into
* @param _bridge name of the physical bridge this VN binds to
* @return 0 if success
*/
int set_lease(int vid, const string& _ip, string& _mac, string& _bridge)
{
_bridge = bridge;
return leases->set(vid,_ip,_mac);
};
/**
* Release previously given lease
* @param _ip IP identifying the lease
* @return 0 if success
*/
void release_lease(const string& ip)
{
return leases->release(ip);
};
/**
* Gets size of the network (used + free)
* @return number of hosts that can be fitted in this network
*/
unsigned int get_size()
{
return leases->size;
};
/**
* Function to print the VirtualNetwork object into a string in
* XML format
* @param xml the resulting XML string
* @return a reference to the generated string
*/
string& to_xml(string& xml) const;
/**
* Function to print the VirtualNetwork object into a string in
* XML format. The extended XML includes the LEASES
* @param xml the resulting XML string
* @return a reference to the generated string
*/
string& to_xml_extended(string& xml) const;
/**
* Modifies the given nic attribute adding the following attributes:
* * IP: leased from network
* * MAC: leased from network
* * BRIDGE: for this virtual network
* @param nic attribute for the VM template
* @param vid of the VM getting the lease
* @return 0 on success
*/
int nic_attribute(VectorAttribute * nic, int vid);
private:
// -------------------------------------------------------------------------
// Friends
// -------------------------------------------------------------------------
friend class VirtualNetworkPool;
// *************************************************************************
// Virtual Network Private Attributes
// *************************************************************************
// -------------------------------------------------------------------------
// Binded physical attributes
// -------------------------------------------------------------------------
/**
* Name of the bridge this VNW binds to
*/
string bridge;
/**
* Name of the physical device the bridge should be attached to
*/
string phydev;
/**
* VLAN ID of the NIC
*/
string vlan_id;
/**
* Whether or not to isolate this network with the vnm driver
*/
int vlan;
// -------------------------------------------------------------------------
// Virtual Network Description
// -------------------------------------------------------------------------
/**
* Holds the type of this network
*/
NetworkType type;
/**
* Pointer to leases class, can be fixed or ranged.
* Holds information on given (and, optionally, possible) leases
*/
Leases * leases;
unsigned int ip_start;
unsigned int ip_end;
// *************************************************************************
// DataBase implementation (Private)
// *************************************************************************
/**
* Execute an INSERT or REPLACE Sql query.
* @param db The SQL DB
* @param replace Execute an INSERT or a REPLACE
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int insert_replace(SqlDB *db, bool replace, string& error_str);
/**
* Bootstraps the database table(s) associated to the Virtual Network
* @return 0 on success
*/
static int bootstrap(SqlDB * db)
{
int rc;
ostringstream oss_vnet(VirtualNetwork::db_bootstrap);
ostringstream oss_lease(Leases::db_bootstrap);
rc = db->exec(oss_vnet);
rc += db->exec(oss_lease);
return rc;
};
/**
* Function to print the VirtualNetwork object into a string in
* XML format
* @param xml the resulting XML string
* @param extended If true, leases are included
* @return a reference to the generated string
*/
string& to_xml_extended(string& xml, bool extended) const;
/**
* Rebuilds the object from an xml formatted string
* @param xml_str The xml-formatted string
*
* @return 0 on success, -1 otherwise
*/
int from_xml(const string &xml_str);
//**************************************************************************
// Constructor
//**************************************************************************
VirtualNetwork(int uid,
int gid,
const string& _uname,
const string& _gname,
VirtualNetworkTemplate * _vn_template = 0);
~VirtualNetwork();
// *************************************************************************
// DataBase implementation
// *************************************************************************
static const char * table;
static const char * db_names;
static const char * db_bootstrap;
/**
* Reads the Virtual Network (identified with its OID) from the database.
* @param db pointer to the db
* @return 0 on success
*/
int select(SqlDB * db);
/**
* Reads the Virtual Network (identified with its OID) from the database.
* @param db pointer to the db
* @param name of the network
* @param uid of the owner
*
* @return 0 on success
*/
int select(SqlDB * db, const string& name, int uid);
/**
* Reads the Virtual Network leases from the database.
* @param db pointer to the db
* @return 0 on success
*/
int select_leases(SqlDB * db);
/**
* Writes the Virtual Network and its associated template and leases in the database.
* @param db pointer to the db
* @return 0 on success
*/
int insert(SqlDB * db, string& error_str);
/**
* Writes/updates the Virtual Network data fields in the database.
* @param db pointer to the db
* @return 0 on success
*/
int update(SqlDB * db)
{
string error_str;
return insert_replace(db, true, error_str);
}
/**
* Deletes a VNW from the database and all its associated information:
* - VNW template
* - given leases
* @param db pointer to the db
* @return 0 on success
*/
int drop(SqlDB * db);
};
#endif /*VIRTUAL_NETWORK_H_*/
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