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one/include/VirtualMachinePool.h

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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2015, 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 VIRTUAL_MACHINE_POOL_H_
#define VIRTUAL_MACHINE_POOL_H_
#include "PoolSQL.h"
#include "VirtualMachine.h"
#include <time.h>
using namespace std;
/**
* The Virtual Machine Pool class. ...
*/
class VirtualMachinePool : public PoolSQL
{
public:
VirtualMachinePool(SqlDB * db,
vector<const Attribute *> hook_mads,
const string& hook_location,
const string& remotes_location,
vector<const Attribute *>& restricted_attrs,
time_t expire_time,
bool on_hold,
float default_cpu_cost,
float default_mem_cost,
float default_disk_cost);
~VirtualMachinePool(){};
/**
* Function to allocate a new VM object
* @param uid user id (the owner of the VM)
* @param gid the id of the group this object is assigned to
* @param uname user name
* @param gname group name
* @param umask permissions umask
* @param vm_template a VM Template object describing the VM
* @param oid the id assigned to the VM (output)
* @param error_str Returns the error reason, if any
* @param on_hold flag to submit on hold
*
* @return oid on success, -1 error inserting in DB or -2 error parsing
* the template
*/
int allocate (
int uid,
int gid,
const string& uname,
const string& gname,
int umask,
VirtualMachineTemplate * vm_template,
int * oid,
string& error_str,
bool on_hold = false);
/**
* Function to get a VM from the pool, if the object is not in memory
* it is loade from the DB
* @param oid VM unique id
* @param lock locks the VM mutex
* @return a pointer to the VM, 0 if the VM could not be loaded
*/
VirtualMachine * get(
int oid,
bool lock)
{
return static_cast<VirtualMachine *>(PoolSQL::get(oid,lock));
};
/**
* Function to get a VM from the pool, string version for VM ID
*/
VirtualMachine * get(
const string& oid_s,
bool lock)
{
istringstream iss(oid_s);
int oid;
iss >> oid;
if ( iss.fail() )
{
return 0;
}
return static_cast<VirtualMachine *>(PoolSQL::get(oid,lock));
};
/**
* Updates a VM in the data base. The VM SHOULD be locked. It also updates
* the previous state after executing the hooks.
* @param objsql a pointer to the VM
*
* @return 0 on success.
*/
virtual int update(
VirtualMachine * objsql)
{
do_hooks(objsql, Hook::UPDATE);
objsql->set_prev_state();
return objsql->update(db);
};
/**
* Gets a VM ID by its deploy_id, the dedploy_id - VM id mapping is keep
* in the import_table.
* @param deploy_id to search the id for
* @return -1 if not found or VMID
*
*/
int get_vmid(const string& deploy_id);
/**
* Function to get the IDs of running VMs
* @param oids a vector that contains the IDs
* @param vm_limit Max. number of VMs returned
* @param last_poll Return only VMs which last_poll is less than or equal
* to this value.
* @return 0 on success
*/
int get_running(
vector<int>& oids,
int vm_limit,
time_t last_poll);
/**
* Function to get the IDs of pending VMs
* @param oids a vector that contains the IDs
* @return 0 on success
*/
int get_pending(
vector<int>& oids);
/**
* Gets the IDs of VMs matching the given SQL where string.
* @param oids a vector that contains the IDs
* @param where SQL clause
* @return 0 on success
*/
int search(vector<int>& oids, const string& where)
{
return PoolSQL::search(oids, VirtualMachine::table, where);
};
//--------------------------------------------------------------------------
// Virtual Machine DB access functions
//--------------------------------------------------------------------------
/**
* Updates the history record of a VM, the vm's mutex SHOULD be locked
* @param vm pointer to the virtual machine object
* @return 0 on success
*/
int update_history(
VirtualMachine * vm)
{
return vm->update_history(db);
}
/**
* Updates the previous history record, the vm's mutex SHOULD be locked
* @param vm pointer to the virtual machine object
* @return 0 on success
*/
int update_previous_history(
VirtualMachine * vm)
{
return vm->update_previous_history(db);
}
/**
* Inserts the last monitoring, and deletes old monitoring entries for this
* VM
*
* @param vm pointer to the virtual machine object
* @return 0 on success
*/
int update_monitoring(
VirtualMachine * vm)
{
if ( _monitor_expiration <= 0 )
{
return 0;
}
return vm->update_monitoring(db);
};
/**
* Deletes the expired monitoring entries for all VMs
*
* @return 0 on success
*/
int clean_expired_monitoring();
/**
* Deletes all monitoring entries for all VMs
*
* @return 0 on success
*/
int clean_all_monitoring();
/**
* Bootstraps the database table(s) associated to the VirtualMachine pool
* @return 0 on success
*/
static int bootstrap(SqlDB * _db)
{
int rc;
ostringstream oss_import(import_db_bootstrap);
rc = VirtualMachine::bootstrap(_db);
rc += _db->exec(oss_import);
return rc;
};
/**
* Dumps the VM pool in XML format. A filter can be also added to the query
* Also the hostname where the VirtualMachine is running is added to the
* pool
* @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, "VM_POOL", VirtualMachine::table, where,
limit);
};
/**
* Dumps the VM accounting information in XML format. A filter can be also
* added to the query as well as a time frame.
* @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_acct(ostringstream& oss,
const string& where,
int time_start,
int time_end);
/**
* Dumps the VM showback information in XML format. A filter can be also
* added to the query as well as a time frame.
* @param oss the output stream to dump the pool contents
* @param where filter for the objects, defaults to all
* @param start_month First month (+year) to include. January is 1.
* Use -1 to unset
* @param start_year First year (+month) to include. e.g. 2014.
* Use -1 to unset
* @param end_month Last month (+year) to include. January is 1.
* Use -1 to unset
* @param end_year Last year (+month) to include. e.g. 2014.
* Use -1 to unset
*
* @return 0 on success
*/
int dump_showback(ostringstream& oss,
const string& where,
int start_month,
int start_year,
int end_month,
int end_year);
/**
* Dumps the VM 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 VM monitoring information for a single VM
*
* @param oss the output stream to dump the pool contents
* @param vmid id of the target VM
*
* @return 0 on success
*/
int dump_monitoring(ostringstream& oss,
int vmid)
{
ostringstream filter;
filter << "oid = " << vmid;
return dump_monitoring(oss, filter.str());
}
/**
* Processes all the history records, and stores the monthly cost for each
* VM
* @param start_month First month (+year) to process. January is 1.
* Use -1 to unset
* @param start_year First year (+month) to process. e.g. 2014.
* Use -1 to unset
* @param end_month Last month (+year) to process. January is 1.
* Use -1 to unset
* @param end_year Last year (+month) to process. e.g. 2014.
* Use -1 to unset
* @param error_str Returns the error reason, if any
*
* @return 0 on success
*/
int calculate_showback(
int start_month,
int start_year,
int end_month,
int end_year,
string &error_str);
/**
* Deletes the DISK that was in the process of being attached. Releases
* Images and updates usage quotas
*
* @param vid VM id
*/
void delete_attach_disk(int vid);
/**
* Deletes the NIC that was in the process of being attached
*
* @param vid VM id
*/
void delete_attach_nic(int vid);
/**
* Deletes an entry in the HV-2-vmid mapping table for imported VMs
* @param deploy_id of the VM
*/
void drop_index(const string& deploy_id);
private:
/**
* Factory method to produce VM objects
* @return a pointer to the new VM
*/
PoolObjectSQL * create()
{
return new VirtualMachine(-1,-1,-1,"","",0,0);
};
/**
* Size, in seconds, of the historical monitoring information
*/
static time_t _monitor_expiration;
/**
* True or false whether to submit new VM on HOLD or not
*/
static bool _submit_on_hold;
/**
* Default values for cpu and memory cost
*/
static float _default_cpu_cost;
static float _default_mem_cost;
static float _default_disk_cost;
/**
* Callback used to get an int in the DB it is used by VM Pool in:
* - calculate_showback (min_stime)
* - get_vmid (vmid)
*/
int db_int_cb(void * _min_stime, int num, char **values, char **names);
// -------------------------------------------------------------------------
// Virtual Machine ID - Deploy ID index for imported VMs
// The index is managed by the VirtualMachinePool
// -------------------------------------------------------------------------
static const char * import_table;
static const char * import_db_names;
static const char * import_db_bootstrap;
/**
* Insert deploy_id - vmid index.
* @param replace will replace and not insert
* @return 0 on success
*/
int insert_index(const string& deploy_id, int vm_id, bool replace);
};
#endif /*VIRTUAL_MACHINE_POOL_H_*/
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