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/* ------------------------------------------------------------------------ */
/* 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 DATASTORE_H_
#define DATASTORE_H_
#include "PoolSQL.h"
#include "ObjectCollection.h"
#include "DatastoreTemplate.h"
#include "Clusterable.h"
/**
* The Datastore class.
*/
class Datastore : public PoolObjectSQL, ObjectCollection, public Clusterable
{
public:
/**
* Function to print the Datastore 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;
/**
* 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);
/**
* Adds this image's ID to the set.
* @param id of the image to be added to the Datastore
* @return 0 on success
*/
int add_image(int id)
{
return add_collection_id(id);
};
/**
* Deletes this image's ID from the set.
* @param id of the image to be deleted from the Datastore
* @return 0 on success
*/
int del_image(int id)
{
return del_collection_id(id);
};
/**
* Retrieves TM mad name
* @return string tm mad name
*/
const string& get_tm_mad() const
{
return tm_mad;
};
/**
* Retrieves the base path
* @return base path string
*/
const string& get_base_path() const
{
return base_path;
};
/**
* Modifies the given VM disk attribute adding the relevant datastore
* attributes
*
* @param disk
* @return 0 on success
*/
int disk_attribute(VectorAttribute * disk);
/**
* Replace template for this object. Object should be updated
* after calling this method
* @param tmpl string representation of the template
*/
int replace_template(const string& tmpl_str, string& error);
private:
// -------------------------------------------------------------------------
// Friends
// -------------------------------------------------------------------------
friend class DatastorePool;
// *************************************************************************
// Datastore Private Attributes
// *************************************************************************
/**
* Name of the datastore driver used to register new images
*/
string ds_mad;
/**
* Name of the TM driver used to transfer file to and from the hosts
*/
string tm_mad;
/**
* Base path for the storage
*/
string base_path;
// *************************************************************************
// Constructor
// *************************************************************************
Datastore(
int uid,
int gid,
const string& uname,
const string& gname,
DatastoreTemplate* ds_template,
int cluster_id,
const string& cluster_name);
virtual ~Datastore(){};
// *************************************************************************
// DataBase implementation (Private)
// *************************************************************************
static const char * db_names;
static const char * db_bootstrap;
static const char * table;
/**
* 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 one success
*/
int insert_replace(SqlDB *db, bool replace, string& error_str);
/**
* Bootstraps the database table(s) associated to the Datastore
* @return 0 on success
*/
static int bootstrap(SqlDB * db)
{
ostringstream oss(Datastore::db_bootstrap);
return db->exec(oss);
};
/**
* Writes the Datastore in the database.
* @param db pointer to the db
* @return 0 on success
*/
int insert(SqlDB *db, string& error_str);
/**
* Writes/updates the Datastore's 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);
}
/**
* Factory method for virtual network templates
*/
Template * get_new_template() const
{
return new DatastoreTemplate;
}
};
#endif /*DATASTORE_H_*/
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