mirror of
https://github.com/OpenNebula/one.git
synced 2024-12-22 13:33:52 +03:00
385 lines
10 KiB
C++
385 lines
10 KiB
C++
/* ------------------------------------------------------------------------ */
|
|
/* Copyright 2002-2018, OpenNebula Project, OpenNebula Systems */
|
|
/* */
|
|
/* 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 CLUSTER_H_
|
|
#define CLUSTER_H_
|
|
|
|
#include "PoolSQL.h"
|
|
#include "ObjectCollection.h"
|
|
#include "DatastorePool.h"
|
|
#include "ClusterTemplate.h"
|
|
#include "BitMap.h"
|
|
|
|
using namespace std;
|
|
|
|
/**
|
|
* The Cluster class.
|
|
*/
|
|
class Cluster : public PoolObjectSQL
|
|
{
|
|
public:
|
|
// *************************************************************************
|
|
// Object Collections (Public)
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Adds this host ID to the set.
|
|
* @param id to be added to the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int add_host(int id, string& error_msg)
|
|
{
|
|
int rc = hosts.add(id);
|
|
|
|
if ( rc < 0 )
|
|
{
|
|
error_msg = "Host ID is already in the cluster set.";
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Deletes this host ID from the set.
|
|
* @param id to be deleted from the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int del_host(int id, string& error_msg)
|
|
{
|
|
int rc = hosts.del(id);
|
|
|
|
if ( rc < 0 )
|
|
{
|
|
error_msg = "Host ID is not part of the cluster set.";
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Adds this datastore ID to the set.
|
|
* @param id to be added to the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int add_datastore(int id, string& error_msg);
|
|
|
|
/**
|
|
* Deletes this datastore ID from the set.
|
|
* @param id to be deleted from the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int del_datastore(int id, string& error_msg);
|
|
|
|
/**
|
|
* Returns a copy of the datastore IDs set
|
|
*/
|
|
set<int> get_datastores()
|
|
{
|
|
return datastores.clone();
|
|
};
|
|
|
|
/**
|
|
* Returns a system DS for the cluster when none is set at the API level
|
|
* @return the ID of the System
|
|
*/
|
|
static int get_default_system_ds(const set<int>& ds_collection);
|
|
|
|
/**
|
|
* Adds this vnet ID to the set.
|
|
* @param id to be added to the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int add_vnet(int id, string& error_msg)
|
|
{
|
|
int rc = vnets.add(id);
|
|
|
|
if ( rc < 0 )
|
|
{
|
|
error_msg = "Network ID is already in the cluster set.";
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Deletes this vnet ID from the set.
|
|
* @param id to be deleted from the cluster
|
|
* @param error_msg Error message, if any
|
|
* @return 0 on success
|
|
*/
|
|
int del_vnet(int id, string& error_msg)
|
|
{
|
|
int rc = vnets.del(id);
|
|
|
|
if ( rc < 0 )
|
|
{
|
|
error_msg = "Network ID is not part of the cluster set.";
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Returns a copy of the host IDs set
|
|
*/
|
|
set<int> get_host_ids()
|
|
{
|
|
return hosts.clone();
|
|
}
|
|
|
|
/**
|
|
* Returns a copy of the datastore IDs set
|
|
*/
|
|
set<int> get_datastore_ids()
|
|
{
|
|
return datastores.clone();
|
|
}
|
|
|
|
/**
|
|
* Returns a copy of the vnet IDs set
|
|
*/
|
|
set<int> get_vnet_ids()
|
|
{
|
|
return vnets.clone();
|
|
}
|
|
|
|
/**
|
|
* Get the default reserved capacity for hosts in the cluster. It can be
|
|
* overridden if defined in the host template.
|
|
* @param cpu reserved cpu (percentage, or absolute)
|
|
* @param mem reserved mem (in KB)
|
|
*/
|
|
void get_reserved_capacity(string& cpu, string& mem)
|
|
{
|
|
get_template_attribute("RESERVED_CPU", cpu);
|
|
|
|
get_template_attribute("RESERVED_MEM", mem);
|
|
}
|
|
|
|
// *************************************************************************
|
|
// VNC Port management function
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Returns a free VNC port, it will try first to allocate base_port + vmid.
|
|
* If this port is not free the first lower port from the VNC_PORT/START
|
|
* port is returned.
|
|
* @param vmid of the VM
|
|
* @param port reserved
|
|
* @return 0 on success
|
|
*/
|
|
int get_vnc_port(int vmid, unsigned int& port)
|
|
{
|
|
unsigned int base_port = vnc_bitmap.get_start_bit();
|
|
unsigned int hint_port = base_port + (vmid % (65535 - base_port));
|
|
|
|
return vnc_bitmap.get(hint_port,port);
|
|
}
|
|
|
|
void release_vnc_port(int port)
|
|
{
|
|
vnc_bitmap.reset(port);
|
|
}
|
|
|
|
int set_vnc_port(int port)
|
|
{
|
|
return vnc_bitmap.set(port);
|
|
}
|
|
|
|
// *************************************************************************
|
|
// DataBase implementation (Public)
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Function to print the Cluster 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);
|
|
|
|
private:
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Friends
|
|
// -------------------------------------------------------------------------
|
|
|
|
friend class ClusterPool;
|
|
|
|
// *************************************************************************
|
|
// Constructor
|
|
// *************************************************************************
|
|
Cluster(int id, const string& name, ClusterTemplate* cl_template,
|
|
const VectorAttribute& vnc_conf);
|
|
|
|
virtual ~Cluster(){};
|
|
|
|
// *************************************************************************
|
|
// Attributes (Private)
|
|
// *************************************************************************
|
|
ObjectCollection hosts;
|
|
ObjectCollection datastores;
|
|
ObjectCollection vnets;
|
|
|
|
BitMap<65536> vnc_bitmap;
|
|
|
|
// *************************************************************************
|
|
// DataBase implementation (Private)
|
|
// *************************************************************************
|
|
static const char * db_names;
|
|
static const char * db_bootstrap;
|
|
static const char * table;
|
|
|
|
static const char * datastore_table;
|
|
static const char * datastore_db_names;
|
|
static const char * datastore_db_bootstrap;
|
|
|
|
static const char * network_table;
|
|
static const char * network_db_names;
|
|
static const char * network_db_bootstrap;
|
|
|
|
static const char * bitmap_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 Cluster
|
|
* @return 0 on success
|
|
*/
|
|
static int bootstrap(SqlDB * db)
|
|
{
|
|
int rc;
|
|
ostringstream oss;
|
|
|
|
oss.str(Cluster::db_bootstrap);
|
|
rc = db->exec_local_wr(oss);
|
|
|
|
oss.str(Cluster::datastore_db_bootstrap);
|
|
rc += db->exec_local_wr(oss);
|
|
|
|
oss.str(Cluster::network_db_bootstrap);
|
|
rc += db->exec_local_wr(oss);
|
|
|
|
return rc;
|
|
};
|
|
|
|
/**
|
|
* Writes the Cluster in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int insert(SqlDB *db, string& error_str)
|
|
{
|
|
int rc;
|
|
|
|
rc = insert_replace(db, false, error_str);
|
|
|
|
if ( rc != 0 )
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
return vnc_bitmap.insert(oid, db);
|
|
}
|
|
|
|
/**
|
|
* Writes/updates the Cluster's data fields in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int update(SqlDB *db)
|
|
{
|
|
string error_str;
|
|
|
|
int rc = insert_replace(db, true, error_str);
|
|
|
|
rc += vnc_bitmap.update(db);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* Reads the PoolObjectSQL (identified by its OID) from the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int select(SqlDB *db)
|
|
{
|
|
int rc = PoolObjectSQL::select(db);
|
|
|
|
if ( rc != 0 )
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
return vnc_bitmap.select(oid, db);
|
|
}
|
|
|
|
/**
|
|
* Reads the PoolObjectSQL (identified by its OID) from the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int select(SqlDB *db, const string& _name, int _uid)
|
|
{
|
|
int rc = PoolObjectSQL::select(db, _name, _uid);
|
|
|
|
if ( rc != 0 )
|
|
{
|
|
return rc;
|
|
}
|
|
|
|
return vnc_bitmap.select(oid, db);
|
|
}
|
|
|
|
/**
|
|
* Checks if all the collections are empty, and therefore this cluster
|
|
* can be dropped.
|
|
*
|
|
* @param error_msg Error message, if any.
|
|
* @return 0 if cluster can be dropped, -1 otherwise
|
|
*/
|
|
int check_drop(string& error_msg);
|
|
|
|
/**
|
|
* Factory method for cluster templates
|
|
*/
|
|
Template * get_new_template() const
|
|
{
|
|
return new ClusterTemplate;
|
|
}
|
|
};
|
|
|
|
#endif /*CLUSTER_H_*/
|