mirror of
https://github.com/OpenNebula/one.git
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261 lines
7.9 KiB
C++
261 lines
7.9 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2012, 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 VIRTUAL_MACHINE_POOL_H_
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#define VIRTUAL_MACHINE_POOL_H_
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#include "PoolSQL.h"
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#include "VirtualMachine.h"
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#include <time.h>
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using namespace std;
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/**
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* The Virtual Machine Pool class. ...
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*/
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class VirtualMachinePool : public PoolSQL
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{
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public:
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VirtualMachinePool(SqlDB * db,
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vector<const Attribute *> hook_mads,
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const string& hook_location,
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const string& remotes_location,
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vector<const Attribute *>& restricted_attrs,
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time_t expire_time);
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~VirtualMachinePool(){};
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/**
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* Function to allocate a new VM object
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* @param uid user id (the owner of the VM)
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* @param gid the id of the group this object is assigned to
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* @param vm_template a VM Template object describing the VM
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* @param oid the id assigned to the VM (output)
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* @param error_str Returns the error reason, if any
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* @param on_hold flag to submit on hold
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* @return oid on success, -1 error inserting in DB or -2 error parsing
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* the template
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*/
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int allocate (
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int uid,
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int gid,
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const string& uname,
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const string& gname,
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VirtualMachineTemplate * vm_template,
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int * oid,
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string& error_str,
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bool on_hold = false);
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/**
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* Function to get a VM from the pool, if the object is not in memory
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* it is loade from the DB
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* @param oid VM unique id
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* @param lock locks the VM mutex
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* @return a pointer to the VM, 0 if the VM could not be loaded
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*/
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VirtualMachine * get(
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int oid,
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bool lock)
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{
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return static_cast<VirtualMachine *>(PoolSQL::get(oid,lock));
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};
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/**
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* Function to get a VM from the pool, string version for VM ID
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*/
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VirtualMachine * get(
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const string& oid_s,
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bool lock)
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{
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istringstream iss(oid_s);
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int oid;
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iss >> oid;
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if ( iss.fail() )
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{
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return 0;
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}
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return static_cast<VirtualMachine *>(PoolSQL::get(oid,lock));
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};
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/**
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* Function to get the IDs of running VMs
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* @param oids a vector that contains the IDs
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* @param vm_limit Max. number of VMs returned
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* @param last_poll Return only VMs which last_poll is less than or equal
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* to this value.
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* @return 0 on success
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*/
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int get_running(
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vector<int>& oids,
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int vm_limit,
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time_t last_poll);
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/**
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* Function to get the IDs of pending VMs
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* @param oids a vector that contains the IDs
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* @return 0 on success
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*/
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int get_pending(
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vector<int>& oids);
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//--------------------------------------------------------------------------
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// Virtual Machine DB access functions
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//--------------------------------------------------------------------------
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/**
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* Updates the history record of a VM, the vm's mutex SHOULD be locked
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* @param vm pointer to the virtual machine object
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* @return 0 on success
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*/
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int update_history(
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VirtualMachine * vm)
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{
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return vm->update_history(db);
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}
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/**
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* Updates the previous history record, the vm's mutex SHOULD be locked
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* @param vm pointer to the virtual machine object
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* @return 0 on success
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*/
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int update_previous_history(
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VirtualMachine * vm)
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{
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return vm->update_previous_history(db);
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}
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/**
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* Inserts the last monitoring, and deletes old monitoring entries for this
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* VM
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*
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* @param vm pointer to the virtual machine object
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* @return 0 on success
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*/
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int update_monitoring(
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VirtualMachine * vm)
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{
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if ( _monitor_expiration <= 0 )
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{
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return 0;
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}
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return vm->update_monitoring(db);
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};
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/**
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* Deletes the expired monitoring entries for all VMs
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*
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* @return 0 on success
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*/
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int clean_expired_monitoring();
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/**
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* Deletes all monitoring entries for all VMs
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*
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* @return 0 on success
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*/
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int clean_all_monitoring();
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/**
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* Bootstraps the database table(s) associated to the VirtualMachine pool
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* @return 0 on success
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*/
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static int bootstrap(SqlDB * _db)
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{
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return VirtualMachine::bootstrap(_db);
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};
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/**
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* Dumps the VM pool in XML format. A filter can be also added to the query
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* Also the hostname where the VirtualMachine is running is added to the
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* pool
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* @param oss the output stream to dump the pool contents
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* @param where filter for the objects, defaults to all
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*
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* @return 0 on success
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*/
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int dump(ostringstream& oss, const string& where)
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{
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return PoolSQL::dump(oss, "VM_POOL", VirtualMachine::table, where);
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};
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/**
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* Dumps the VM accounting information in XML format. A filter can be also
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* added to the query as well as a time frame.
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* @param oss the output stream to dump the pool contents
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* @param where filter for the objects, defaults to all
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*
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* @return 0 on success
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*/
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int dump_acct(ostringstream& oss,
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const string& where,
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int time_start,
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int time_end);
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/**
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* Dumps the VM monitoring information entries in XML format. A filter
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* can be also added to the query.
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*
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* @param oss the output stream to dump the pool contents
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* @param where filter for the objects, defaults to all
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*
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* @return 0 on success
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*/
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int dump_monitoring(ostringstream& oss,
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const string& where);
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/**
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* Dumps the VM monitoring information for a single VM
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*
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* @param oss the output stream to dump the pool contents
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* @param vmid id of the target VM
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*
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* @return 0 on success
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*/
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int dump_monitoring(ostringstream& oss,
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int vmid)
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{
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ostringstream filter;
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filter << "oid = " << vmid;
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return dump_monitoring(oss, filter.str());
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}
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private:
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/**
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* Factory method to produce VM objects
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* @return a pointer to the new VM
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*/
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PoolObjectSQL * create()
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{
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return new VirtualMachine(-1,-1,-1,"","",0);
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};
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/**
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* Size, in seconds, of the historical monitoring information
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*/
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static time_t _monitor_expiration;
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};
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#endif /*VIRTUAL_MACHINE_POOL_H_*/
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