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133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
/* ------------------------------------------------------------------------ */
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/* Copyright 2002-2010, OpenNebula Project Leads (OpenNebula.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 CLUSTER_H_
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#define CLUSTER_H_
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#include "PoolSQL.h"
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#include "Host.h"
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using namespace std;
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/**
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* The Cluster class.
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*/
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class Cluster : public PoolObjectSQL
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{
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public:
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/**
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* Adds the host to this cluster
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* @param host The host to add
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*
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* @return 0 on success
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*/
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/*
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int add_host(Host * host)
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{
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return host->set_cluster(name);
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};
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*/
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/**
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* Removes the host from this cluster
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* @param host The host to add
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*
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* @return 0 on success
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*/
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// May be needed in a future
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// int remove_host(Host * host);
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/**
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* Function to write a Cluster on an output stream
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*/
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friend ostream& operator<<(ostream& os, Cluster& cluster);
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/**
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* Function to print the Cluster object into a string in XML format
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* @param xml the resulting XML string
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* @return a reference to the generated string
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*/
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string& to_xml(string& xml) const;
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/**
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* Rebuilds the object from an xml formatted string
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* @param xml_str The xml-formatted string
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*
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* @return 0 on success, -1 otherwise
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*/
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int from_xml(const string &xml_str);
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private:
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// -------------------------------------------------------------------------
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// Friends
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// -------------------------------------------------------------------------
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friend class ClusterPool;
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// *************************************************************************
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// Constructor
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// *************************************************************************
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Cluster(int id, const string& name);
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virtual ~Cluster();
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// *************************************************************************
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// DataBase implementation (Private)
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// *************************************************************************
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static const char * db_names;
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static const char * db_bootstrap;
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static const char * table;
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/**
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* Execute an INSERT or REPLACE Sql query.
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* @param db The SQL DB
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* @param replace Execute an INSERT or a REPLACE
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* @return 0 one success
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*/
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int insert_replace(SqlDB *db, bool replace);
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/**
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* Bootstraps the database table(s) associated to the Cluster
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*/
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static void bootstrap(SqlDB * db)
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{
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ostringstream oss_cluster(Cluster::db_bootstrap);
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db->exec(oss_cluster);
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};
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/**
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* Writes the Cluster in the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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int insert(SqlDB *db, string& error_str);
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/**
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* Writes/updates the Cluster's data fields in the database.
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* @param db pointer to the db
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* @return 0 on success
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*/
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int update(SqlDB *db);
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};
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#endif /*CLUSTER_H_*/
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