mirror of
https://github.com/OpenNebula/one.git
synced 2024-12-25 23:21:29 +03:00
304 lines
8.6 KiB
C++
304 lines
8.6 KiB
C++
/* -------------------------------------------------------------------------- */
|
|
/* Copyright 2002-2014, OpenNebula Project (OpenNebula.org), C12G Labs */
|
|
/* */
|
|
/* 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 HOST_POOL_H_
|
|
#define HOST_POOL_H_
|
|
|
|
#include "PoolSQL.h"
|
|
#include "Host.h"
|
|
|
|
#include <time.h>
|
|
#include <sstream>
|
|
|
|
#include <iostream>
|
|
|
|
#include <vector>
|
|
|
|
using namespace std;
|
|
|
|
/**
|
|
* The Host Pool class.
|
|
*/
|
|
class HostPool : public PoolSQL
|
|
{
|
|
public:
|
|
HostPool(SqlDB * db,
|
|
vector<const Attribute *> hook_mads,
|
|
const string& hook_location,
|
|
const string& remotes_location,
|
|
time_t expire_time);
|
|
|
|
~HostPool(){};
|
|
|
|
/**
|
|
* Function to allocate a new Host object
|
|
* @param oid the id assigned to the Host
|
|
* @return the oid assigned to the object or -1 in case of failure
|
|
*/
|
|
int allocate (
|
|
int * oid,
|
|
const string& hostname,
|
|
const string& im_mad_name,
|
|
const string& vmm_mad_name,
|
|
const string& vnm_mad_name,
|
|
int cluster_id,
|
|
const string& cluster_name,
|
|
string& error_str);
|
|
|
|
/**
|
|
* Function to get a Host from the pool, if the object is not in memory
|
|
* it is loaded from the DB
|
|
* @param oid Host unique id
|
|
* @param lock locks the Host mutex
|
|
* @return a pointer to the Host, 0 if the Host could not be loaded
|
|
*/
|
|
Host * get(
|
|
int oid,
|
|
bool lock)
|
|
{
|
|
return static_cast<Host *>(PoolSQL::get(oid,lock));
|
|
};
|
|
|
|
/**
|
|
* Function to get a Host from the pool, if the object is not in memory
|
|
* it is loaded from the DB
|
|
* @param hostname
|
|
* @param lock locks the Host mutex
|
|
* @return a pointer to the Host, 0 if the Host could not be loaded
|
|
*/
|
|
Host * get(string name, bool lock)
|
|
{
|
|
// The owner is set to -1, because it is not used in the key() method
|
|
return static_cast<Host *>(PoolSQL::get(name,-1,lock));
|
|
};
|
|
|
|
/**
|
|
* Generate an index key for the object
|
|
* @param name of the object
|
|
* @param uid owner of the object, only used if needed
|
|
*
|
|
* @return the key, a string
|
|
*/
|
|
string key(const string& name, int uid)
|
|
{
|
|
// Name is enough key because Hosts can't repeat names.
|
|
return name;
|
|
};
|
|
|
|
/**
|
|
* Bootstraps the database table(s) associated to the Host pool
|
|
* @return 0 on success
|
|
*/
|
|
static int bootstrap(SqlDB *_db)
|
|
{
|
|
return Host::bootstrap(_db);
|
|
};
|
|
|
|
/**
|
|
* Get the least monitored hosts
|
|
* @param discovered hosts
|
|
* @param host_limit max. number of hosts to monitor at a time
|
|
* @param target_time Filters hosts with last_mon_time <= target_time
|
|
* @return int 0 if success
|
|
*/
|
|
int discover(set<int> * discovered_hosts, int host_limit, time_t target_time);
|
|
|
|
/**
|
|
* Allocates a given capacity to the host
|
|
* @param oid the id of the host to allocate the capacity
|
|
* @param vm_id id of the vm to add to the host
|
|
* @param cpu amount of CPU, in percentage
|
|
* @param mem amount of main memory, in KB
|
|
* @param disk amount of disk
|
|
*
|
|
* @return 0 on success -1 in case of failure
|
|
*/
|
|
int add_capacity(int oid, int vm_id, int cpu, int mem, int disk)
|
|
{
|
|
int rc = 0;
|
|
Host * host = get(oid, true);
|
|
|
|
if ( host != 0 )
|
|
{
|
|
host->add_capacity(vm_id, cpu, mem, disk);
|
|
|
|
update(host);
|
|
|
|
host->unlock();
|
|
}
|
|
else
|
|
{
|
|
rc = -1;
|
|
}
|
|
|
|
return rc;
|
|
};
|
|
|
|
/**
|
|
* De-Allocates a given capacity to the host
|
|
* @param oid the id of the host to allocate the capacity
|
|
* @param vm_id id of the vm to add to the host
|
|
* @param cpu amount of CPU
|
|
* @param mem amount of main memory
|
|
* @param disk amount of disk
|
|
*/
|
|
void del_capacity(int oid, int vm_id, int cpu, int mem, int disk)
|
|
{
|
|
Host * host = get(oid, true);
|
|
|
|
if ( host != 0 )
|
|
{
|
|
host->del_capacity(vm_id, cpu, mem, disk);
|
|
|
|
update(host);
|
|
|
|
host->unlock();
|
|
}
|
|
};
|
|
|
|
int drop(PoolObjectSQL * objsql, string& error_msg)
|
|
{
|
|
Host * host = static_cast<Host *>(objsql);
|
|
|
|
if ( host->get_share_running_vms() > 0 )
|
|
{
|
|
error_msg = "Can not remove a host with running VMs";
|
|
return -1;
|
|
}
|
|
|
|
return PoolSQL::drop(objsql, error_msg);
|
|
};
|
|
|
|
/**
|
|
* Dumps the HOST pool in XML format. A filter can be also added to the
|
|
* query
|
|
* @param oss the output stream to dump the pool contents
|
|
* @param where filter for the objects, defaults to all
|
|
* @param limit parameters used for pagination
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int dump(ostringstream& oss, const string& where, const string& limit)
|
|
{
|
|
return PoolSQL::dump(oss, "HOST_POOL", Host::table, where, limit);
|
|
};
|
|
|
|
/**
|
|
* Finds a set objects that satisfies a given condition
|
|
* @param oids a vector with the oids of the objects.
|
|
* @param the name of the DB table.
|
|
* @param where condition in SQL format.
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int search(vector<int>& oids, const string& where)
|
|
{
|
|
return PoolSQL::search(oids, Host::table, where);
|
|
};
|
|
|
|
/**
|
|
* Dumps the host monitoring information entries in XML format. A filter
|
|
* can be also added to the query.
|
|
*
|
|
* @param oss the output stream to dump the pool contents
|
|
* @param where filter for the objects, defaults to all
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int dump_monitoring(ostringstream& oss,
|
|
const string& where);
|
|
|
|
/**
|
|
* Dumps the HOST monitoring information for a single HOST
|
|
*
|
|
* @param oss the output stream to dump the pool contents
|
|
* @param hostid id of the target HOST
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int dump_monitoring(ostringstream& oss,
|
|
int hostid)
|
|
{
|
|
ostringstream filter;
|
|
|
|
filter << "oid = " << hostid;
|
|
|
|
return dump_monitoring(oss, filter.str());
|
|
}
|
|
|
|
/**
|
|
* Inserts the last monitoring, and deletes old monitoring entries for this
|
|
* host
|
|
*
|
|
* @param host pointer to the host object
|
|
* @return 0 on success
|
|
*/
|
|
int update_monitoring(Host * host)
|
|
{
|
|
if ( _monitor_expiration <= 0 )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
return host->update_monitoring(db);
|
|
};
|
|
|
|
/**
|
|
* Deletes the expired monitoring entries for all hosts
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int clean_expired_monitoring();
|
|
|
|
private:
|
|
|
|
/**
|
|
* Factory method to produce Host objects
|
|
* @return a pointer to the new Host
|
|
*/
|
|
PoolObjectSQL * create()
|
|
{
|
|
return new Host(-1,"","","","",-1,"");
|
|
};
|
|
|
|
/**
|
|
* Callback function to get the IDs of the hosts to be monitored
|
|
* (Host::discover)
|
|
*
|
|
* @param _set the set<int>* of host ids
|
|
* @param num the number of columns read from the DB
|
|
* @param values the column values
|
|
* @param names the column names
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int discover_cb(void * _set, int num, char **values, char **names);
|
|
|
|
/**
|
|
* Deletes all monitoring entries for all hosts
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int clean_all_monitoring();
|
|
|
|
/**
|
|
* Size, in seconds, of the historical monitoring information
|
|
*/
|
|
static time_t _monitor_expiration;
|
|
};
|
|
|
|
#endif /*HOST_POOL_H_*/
|