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one/include/VirtualMachine.h

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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2013, 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_H_
#define VIRTUAL_MACHINE_H_
#include "VirtualMachineTemplate.h"
#include "PoolSQL.h"
#include "History.h"
#include "Image.h"
#include "Log.h"
#include "NebulaLog.h"
#include "NebulaUtil.h"
#include <time.h>
#include <set>
#include <sstream>
using namespace std;
class AuthRequest;
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
/**
* The Virtual Machine class. It represents a VM...
*/
class VirtualMachine : public PoolObjectSQL
{
public:
// -------------------------------------------------------------------------
// VM States
// -------------------------------------------------------------------------
/**
* Global Virtual Machine state
*/
enum VmState
{
INIT = 0,
PENDING = 1,
HOLD = 2,
ACTIVE = 3,
STOPPED = 4,
SUSPENDED = 5,
DONE = 6,
FAILED = 7,
POWEROFF = 8,
UNDEPLOYED = 9
};
static int vm_state_from_str(string& st, VmState& state)
{
one_util::toupper(st);
if ( st == "INIT" ) { state = INIT; }
else if ( st == "PENDING" ) { state = PENDING; }
else if ( st == "HOLD" ) { state = HOLD; }
else if ( st == "ACTIVE" ) { state = ACTIVE; }
else if ( st == "STOPPED" ) { state = STOPPED; }
else if ( st == "SUSPENDED" ) { state = SUSPENDED; }
else if ( st == "DONE" ) { state = DONE; }
else if ( st == "FAILED" ) { state = FAILED; }
else if ( st == "POWEROFF" ) { state = POWEROFF; }
else if ( st == "UNDEPLOYED" ) { state = UNDEPLOYED; }
else {return -1;}
return 0;
}
static string& vm_state_to_str(string& st, VmState state)
{
switch (state)
{
case INIT : st = "INIT"; break;
case PENDING : st = "PENDING"; break;
case HOLD : st = "HOLD"; break;
case ACTIVE : st = "ACTIVE"; break;
case STOPPED : st = "STOPPED"; break;
case SUSPENDED : st = "SUSPENDED"; break;
case DONE : st = "DONE"; break;
case FAILED : st = "FAILED"; break;
case POWEROFF : st = "POWEROFF"; break;
case UNDEPLOYED: st = "UNDEPLOYED"; break;
}
return st;
}
/**
* Virtual Machine state associated to the Life-cycle Manager
*/
enum LcmState
{
LCM_INIT = 0,
PROLOG = 1,
BOOT = 2,
RUNNING = 3,
MIGRATE = 4,
SAVE_STOP = 5,
SAVE_SUSPEND = 6,
SAVE_MIGRATE = 7,
PROLOG_MIGRATE = 8,
PROLOG_RESUME = 9,
EPILOG_STOP = 10,
EPILOG = 11,
SHUTDOWN = 12,
CANCEL = 13,
FAILURE = 14,
CLEANUP_RESUBMIT = 15,
UNKNOWN = 16,
HOTPLUG = 17,
SHUTDOWN_POWEROFF = 18,
BOOT_UNKNOWN = 19,
BOOT_POWEROFF = 20,
BOOT_SUSPENDED = 21,
BOOT_STOPPED = 22,
CLEANUP_DELETE = 23,
HOTPLUG_SNAPSHOT = 24,
HOTPLUG_NIC = 25,
HOTPLUG_SAVEAS = 26,
HOTPLUG_SAVEAS_POWEROFF = 27,
HOTPLUG_SAVEAS_SUSPENDED = 28,
SHUTDOWN_UNDEPLOY = 29,
EPILOG_UNDEPLOY = 30,
PROLOG_UNDEPLOY = 31,
BOOT_UNDEPLOY = 32
};
static int lcm_state_from_str(string& st, LcmState& state)
{
one_util::toupper(st);
if ( st == "LCM_INIT" ){ state = LCM_INIT; }
else if ( st == "PROLOG") { state = PROLOG; }
else if ( st == "BOOT") { state = BOOT; }
else if ( st == "RUNNING") { state = RUNNING; }
else if ( st == "MIGRATE") { state = MIGRATE; }
else if ( st == "SAVE_STOP") { state = SAVE_STOP; }
else if ( st == "SAVE_SUSPEND") { state = SAVE_SUSPEND; }
else if ( st == "SAVE_MIGRATE") { state = SAVE_MIGRATE; }
else if ( st == "PROLOG_MIGRATE") { state = PROLOG_MIGRATE; }
else if ( st == "PROLOG_RESUME") { state = PROLOG_RESUME; }
else if ( st == "EPILOG_STOP") { state = EPILOG_STOP; }
else if ( st == "EPILOG") { state = EPILOG; }
else if ( st == "SHUTDOWN") { state = SHUTDOWN; }
else if ( st == "CANCEL") { state = CANCEL; }
else if ( st == "FAILURE") { state = FAILURE; }
else if ( st == "CLEANUP_RESUBMIT") { state = CLEANUP_RESUBMIT; }
else if ( st == "UNKNOWN") { state = UNKNOWN; }
else if ( st == "HOTPLUG") { state = HOTPLUG; }
else if ( st == "SHUTDOWN_POWEROFF") { state = SHUTDOWN_POWEROFF; }
else if ( st == "BOOT_UNKNOWN") { state = BOOT_UNKNOWN; }
else if ( st == "BOOT_POWEROFF") { state = BOOT_POWEROFF; }
else if ( st == "BOOT_SUSPENDED") { state = BOOT_SUSPENDED; }
else if ( st == "BOOT_STOPPED") { state = BOOT_STOPPED; }
else if ( st == "CLEANUP_DELETE") { state = CLEANUP_DELETE; }
else if ( st == "HOTPLUG_SNAPSHOT") { state = HOTPLUG_SNAPSHOT; }
else if ( st == "HOTPLUG_NIC") { state = HOTPLUG_NIC; }
else if ( st == "HOTPLUG_SAVEAS") { state = HOTPLUG_SAVEAS; }
else if ( st == "HOTPLUG_SAVEAS_POWEROFF") { state = HOTPLUG_SAVEAS_POWEROFF; }
else if ( st == "HOTPLUG_SAVEAS_SUSPENDED") { state = HOTPLUG_SAVEAS_SUSPENDED; }
else if ( st == "SHUTDOWN_UNDEPLOY") { state = SHUTDOWN_UNDEPLOY; }
else if ( st == "EPILOG_UNDEPLOY") { state = EPILOG_UNDEPLOY; }
else if ( st == "PROLOG_UNDEPLOY") { state = PROLOG_UNDEPLOY; }
else if ( st == "BOOT_UNDEPLOY") { state = BOOT_UNDEPLOY; }
else {return -1;}
return 0;
}
static string& lcm_state_to_str(string& st, LcmState& state)
{
switch (state)
{
case LCM_INIT: st = "LCM_INIT"; break;
case PROLOG: st = "PROLOG"; break;
case BOOT: st = "BOOT"; break;
case RUNNING: st = "RUNNING"; break;
case MIGRATE: st = "MIGRATE"; break;
case SAVE_STOP: st = "SAVE_STOP"; break;
case SAVE_SUSPEND: st = "SAVE_SUSPEND"; break;
case SAVE_MIGRATE: st = "SAVE_MIGRATE"; break;
case PROLOG_MIGRATE: st = "PROLOG_MIGRATE"; break;
case PROLOG_RESUME: st = "PROLOG_RESUME"; break;
case EPILOG_STOP: st = "EPILOG_STOP"; break;
case EPILOG: st = "EPILOG"; break;
case SHUTDOWN: st = "SHUTDOWN"; break;
case CANCEL: st = "CANCEL"; break;
case FAILURE: st = "FAILURE"; break;
case CLEANUP_RESUBMIT: st = "CLEANUP_RESUBMIT"; break;
case UNKNOWN: st = "UNKNOWN"; break;
case HOTPLUG: st = "HOTPLUG"; break;
case SHUTDOWN_POWEROFF: st = "SHUTDOWN_POWEROFF"; break;
case BOOT_UNKNOWN: st = "BOOT_UNKNOWN"; break;
case BOOT_POWEROFF: st = "BOOT_POWEROFF"; break;
case BOOT_SUSPENDED: st = "BOOT_SUSPENDED"; break;
case BOOT_STOPPED: st = "BOOT_STOPPED"; break;
case CLEANUP_DELETE: st = "CLEANUP_DELETE"; break;
case HOTPLUG_SNAPSHOT: st = "HOTPLUG_SNAPSHOT"; break;
case HOTPLUG_NIC: st = "HOTPLUG_NIC"; break;
case HOTPLUG_SAVEAS: st = "HOTPLUG_SAVEAS"; break;
case HOTPLUG_SAVEAS_POWEROFF: st = "HOTPLUG_SAVEAS_POWEROFF"; break;
case HOTPLUG_SAVEAS_SUSPENDED: st = "HOTPLUG_SAVEAS_SUSPENDED"; break;
case SHUTDOWN_UNDEPLOY: st = "SHUTDOWN_UNDEPLOY"; break;
case EPILOG_UNDEPLOY: st = "EPILOG_UNDEPLOY"; break;
case PROLOG_UNDEPLOY: st = "PROLOG_UNDEPLOY"; break;
case BOOT_UNDEPLOY: st = "BOOT_UNDEPLOY"; break;
}
return st;
}
// -------------------------------------------------------------------------
// Log & Print
// -------------------------------------------------------------------------
/**
* writes a log message in vm.log. The class lock should be locked and
* the VM MUST BE obtained through the VirtualMachinePool get() method.
*/
void log(
const char * module,
const Log::MessageType type,
const ostringstream& message) const
{
if (_log != 0)
{
_log->log(module,type,message.str().c_str());
}
};
/**
* writes a log message in vm.log. The class lock should be locked and
* the VM MUST BE obtained through the VirtualMachinePool get() method.
*/
void log(
const char * module,
const Log::MessageType type,
const char * message) const
{
if (_log != 0)
{
_log->log(module,type,message);
}
};
/**
* Function to print the VirtualMachine 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
{
return to_xml_extended(xml, 1);
}
/**
* Function to print the VirtualMachine object into a string in
* XML format, with extended information (full history records)
* @param xml the resulting XML string
* @return a reference to the generated string
*/
string& to_xml_extended(string& xml) const
{
return to_xml_extended(xml, 2);
}
/**
* 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);
// ------------------------------------------------------------------------
// Dynamic Info
// ------------------------------------------------------------------------
/**
* Updates VM dynamic information (id).
* @param _deploy_id the VMM driver specific id
*/
void update_info(
const string& _deploy_id)
{
deploy_id = _deploy_id;
};
/**
* Updates VM dynamic information (usage counters), and updates last_poll
* @param _memory Kilobytes used by the VM (total)
* @param _cpu used by the VM (rate)
* @param _net_tx transmitted bytes (total)
* @param _net_rx received bytes (total)
*/
void update_info(
const int _memory,
const int _cpu,
const long long _net_tx,
const long long _net_rx,
const map<string, string> &custom);
/**
* Returns the deployment ID
* @return the VMM driver specific ID
*/
const string& get_deploy_id() const
{
return deploy_id;
};
/**
* Sets the VM exit time
* @param _et VM exit time (when it arrived DONE/FAILED states)
*/
void set_exit_time(time_t et)
{
etime = et;
};
/**
* Sets the KERNEL OS attribute (path to the kernel file). Used when
* the template is using a FILE Datastore for it
* @param path to the kernel (in the remote host)
*/
void set_kernel(const string& kernel)
{
vector<Attribute *> os_attr;
VectorAttribute * os;
int num = obj_template->get("OS", os_attr);
if ( num == 0 )
{
return;
}
os = dynamic_cast<VectorAttribute *>(os_attr[0]);
os->replace("KERNEL", kernel);
};
/**
* Sets the INITRD OS attribute (path to the initrd file). Used when
* the template is using a FILE Datastore for it
* @param path to the initrd (in the remote host)
*/
void set_initrd(const string& initrd)
{
vector<Attribute *> os_attr;
VectorAttribute * os;
int num = obj_template->get("OS", os_attr);
if ( num == 0 )
{
return;
}
os = dynamic_cast<VectorAttribute *>(os_attr[0]);
os->replace("INITRD", initrd);
};
// ------------------------------------------------------------------------
// Access to VM locations
// ------------------------------------------------------------------------
/**
* Returns the remote VM directory. The VM remote dir is in the form:
* $DATASTORE_LOCATION/$SYSTEM_DS_ID/$VM_ID. The remote system_dir stores
* disks for a running VM in the target host.
* @return the remote system directory for the VM
*/
const string& get_remote_system_dir() const
{
return history->rsystem_dir;
}
/**
* Returns the local VM directory. The VM local dir is in the form:
* $SYSTEM_DS_BASE_PATH/$VM_ID. Temporary stores VM disks.
* @return the system directory for the VM
*/
string get_system_dir() const;
// ------------------------------------------------------------------------
// History
// ------------------------------------------------------------------------
/**
* Adds a new history record an writes it in the database.
*/
void add_history(
int hid,
int cid,
const string& hostname,
const string& vmm_mad,
const string& vnm_mad,
const string& tm_mad,
const string& ds_location,
int ds_id);
/**
* Duplicates the last history record. Only the host related fields are
* affected (i.e. no counter is copied nor initialized).
* @param reason explaining the new addition.
*/
void cp_history();
/**
* Duplicates the previous history record. Only the host related fields are
* affected (i.e. no counter is copied nor initialized).
* @param reason explaining the new addition.
*/
void cp_previous_history();
/**
* Checks if the VM has a valid history record. This function
* MUST be called before using any history related function.
* @return true if the VM has a record
*/
bool hasHistory() const
{
return (history!=0);
};
/**
* Checks if the VM has a valid previous history record. This function
* MUST be called before using any previous_history related function.
* @return true if the VM has a previous record
*/
bool hasPreviousHistory() const
{
return (previous_history!=0);
};
/**
* Returns the VMM driver name for the current host. The hasHistory()
* function MUST be called before this one.
* @return the VMM mad name
*/
const string & get_vmm_mad() const
{
return history->vmm_mad_name;
};
/**
* Returns the VMM driver name for the previous host. The hasPreviousHistory()
* function MUST be called before this one.
* @return the VMM mad name
*/
const string & get_previous_vmm_mad() const
{
return previous_history->vmm_mad_name;
};
/**
* Returns the VNM driver name for the current host. The hasHistory()
* function MUST be called before this one.
* @return the VNM mad name
*/
const string & get_vnm_mad() const
{
return history->vnm_mad_name;
};
/**
* Returns the VNM driver name for the previous host. The hasPreviousHistory()
* function MUST be called before this one.
* @return the VNM mad name
*/
const string & get_previous_vnm_mad() const
{
return previous_history->vnm_mad_name;
};
/**
* Returns the datastore ID of the system DS for the host. The hasHistory()
* function MUST be called before this one.
* @return the ds id
*/
string get_ds_id() const
{
ostringstream oss;
oss << history->ds_id;
return oss.str();
};
/**
* Returns the datastore ID of the system DS for the previous host.
* The hasPreviousHistory() function MUST be called before this one.
* @return the TM mad name
*/
string get_previous_ds_id() const
{
ostringstream oss;
oss << previous_history->ds_id;
return oss.str();
};
/**
* Returns the TM driver name for the current host. The hasHistory()
* function MUST be called before this one.
* @return the TM mad name
*/
const string & get_tm_mad() const
{
return history->tm_mad_name;
};
/**
* Returns the TM driver name for the previous host. The
* hasPreviousHistory() function MUST be called before this one.
* @return the TM mad name
*/
const string & get_previous_tm_mad() const
{
return previous_history->tm_mad_name;
};
/**
* Returns the transfer filename. The transfer file is in the form:
* $ONE_LOCATION/var/vms/$VM_ID/transfer.$SEQ
* or, in case that OpenNebula is installed in root
* /var/lib/one/vms/$VM_ID/transfer.$SEQ
* The hasHistory() function MUST be called before this one.
* @return the transfer filename
*/
const string & get_transfer_file() const
{
return history->transfer_file;
};
/**
* Returns the deployment filename. The deployment file is in the form:
* $ONE_LOCATION/var/vms/$VM_ID/deployment.$SEQ
* or, in case that OpenNebula is installed in root
* /var/lib/one/vms/$VM_ID/deployment.$SEQ
* The hasHistory() function MUST be called before this one.
* @return the deployment file path
*/
const string & get_deployment_file() const
{
return history->deployment_file;
};
/**
* Returns the context filename. The context file is in the form:
* $ONE_LOCATION/var/vms/$VM_ID/context.sh
* or, in case that OpenNebula is installed in root
* /var/lib/one/vms/$VM_ID/context.sh
* The hasHistory() function MUST be called before this one.
* @return the context file path
*/
const string & get_context_file() const
{
return history->context_file;
}
/**
* Returns the token filename. The token file is in the form:
* $ONE_LOCATION/var/vms/$VM_ID/token.txt
* or, in case that OpenNebula is installed in root
* /var/lib/one/vms/$VM_ID/token.txt
* The hasHistory() function MUST be called before this one.
* @return the token file path
*/
const string & get_token_file() const
{
return history->token_file;
}
/**
* Returns the remote deployment filename. The file is in the form:
* $DS_LOCATION/$SYSTEM_DS/$VM_ID/deployment.$SEQ
* The hasHistory() function MUST be called before this one.
* @return the deployment filename
*/
const string & get_remote_deployment_file() const
{
return history->rdeployment_file;
};
/**
* Returns the checkpoint filename for the current host. The checkpoint file
* is in the form:
* $DS_LOCATION/$SYSTEM_DS/$VM_ID/checkpoint
* The hasHistory() function MUST be called before this one.
* @return the checkpoint filename
*/
const string & get_checkpoint_file() const
{
return history->checkpoint_file;
};
/**
* Returns the hostname for the current host. The hasHistory()
* function MUST be called before this one.
* @return the hostname
*/
const string & get_hostname() const
{
return history->hostname;
};
/**
* Updates the current hostname. The hasHistory()
* function MUST be called before this one.
* @param hostname New hostname
*/
void set_hostname(const string& hostname)
{
history->hostname = hostname;
};
/**
* Returns the hostname for the previous host. The hasPreviousHistory()
* function MUST be called before this one.
* @return the hostname
*/
const string & get_previous_hostname() const
{
return previous_history->hostname;
};
/**
* Returns the reason that closed the history record in the previous host
* @return the reason to close the history record in the previous host
*/
const History::EndReason get_previous_reason() const
{
return previous_history->reason;
};
/**
* Returns the action that closed the history record in the previous host
* @return the action that closed the history record in the previous host
*/
const History::VMAction get_previous_action() const
{
return previous_history->action;
};
/**
* Get host id where the VM is or is going to execute. The hasHistory()
* function MUST be called before this one.
*/
int get_hid()
{
return history->hid;
}
/**
* Get host id where the VM was executing. The hasPreviousHistory()
* function MUST be called before this one.
*/
int get_previous_hid()
{
return previous_history->hid;
}
/**
* Sets start time of a VM.
* @param _stime time when the VM started
*/
void set_stime(time_t _stime)
{
history->stime=_stime;
};
/**
* Sets VM info (with monitoring info) in the history record
*/
void set_vm_info()
{
to_xml_extended(history->vm_info, 0);
};
/**
* Sets VM info (with monitoring info) in the previous history record
*/
void set_previous_vm_info()
{
to_xml_extended(previous_history->vm_info, 0);
};
/**
* Sets end time of a VM.
* @param _etime time when the VM finished
*/
void set_etime(time_t _etime)
{
history->etime=_etime;
};
/**
* Sets end time of a VM in the previous Host.
* @param _etime time when the VM finished
*/
void set_previous_etime(time_t _etime)
{
previous_history->etime=_etime;
};
/**
* Sets start time of VM prolog.
* @param _stime time when the prolog started
*/
void set_prolog_stime(time_t _stime)
{
history->prolog_stime=_stime;
};
/**
* Sets end time of VM prolog.
* @param _etime time when the prolog finished
*/
void set_prolog_etime(time_t _etime)
{
history->prolog_etime=_etime;
};
/**
* Sets start time of VM running state.
* @param _stime time when the running state started
*/
void set_running_stime(time_t _stime)
{
history->running_stime=_stime;
};
/**
* Gets the running start time for the VM
*/
time_t get_running_stime()
{
return history->running_stime;
}
/**
* Sets end time of VM running state.
* @param _etime time when the running state finished
*/
void set_running_etime(time_t _etime)
{
history->running_etime=_etime;
};
/**
* Sets end time of VM running state in the previous host.
* @param _etime time when the running state finished
*/
void set_previous_running_etime(time_t _etime)
{
previous_history->running_etime=_etime;
};
/**
* Sets start time of VM epilog.
* @param _stime time when the epilog started
*/
void set_epilog_stime(time_t _stime)
{
history->epilog_stime=_stime;
};
/**
* Sets end time of VM epilog.
* @param _etime time when the epilog finished
*/
void set_epilog_etime(time_t _etime)
{
history->epilog_etime=_etime;
};
/**
* Sets the reason that closed the history record
* @param _reason reason to close the history record
*/
void set_reason(History::EndReason _reason)
{
history->reason=_reason;
};
/**
* Sets the reason that closed the history record in the previous host
* @param _reason reason to close the history record in the previous host
*/
void set_previous_reason(History::EndReason _reason)
{
previous_history->reason=_reason;
};
/**
* Sets the action that closed the history record
* @param action that closed the history record
*/
void set_action(History::VMAction action)
{
history->action = action;
};
/**
* Sets the action that closed the history record in the previous host
* @param action that closed the history record in the previous host
*/
void set_previous_action(History::VMAction action)
{
previous_history->action = action;
};
// ------------------------------------------------------------------------
// Template
// ------------------------------------------------------------------------
/**
* Parse a string and substitute variables (e.g. $NAME) using the VM
* template values:
* @param attribute, the string to be parsed
* @param parsed, the resulting parsed string
* @param error description in case of failure
* @return 0 on success.
*/
int parse_template_attribute(const string& attribute,
string& parsed,
string& error);
/**
* Parse a file string variable (i.e. $FILE) using the FILE_DS datastores.
* It should be used for OS/DS_KERNEL, OS/DS_INITRD, CONTEXT/DS_FILES.
* @param attribute the string to be parsed
* @param img_ids ids of the FILE images in the attribute
* @param error description in case of failure
* @return 0 on success.
*/
int parse_file_attribute(string attribute,
vector<int>& img_ids,
string& error);
/**
* Factory method for virtual machine templates
*/
Template * get_new_template() const
{
return new VirtualMachineTemplate;
}
/**
* Returns a copy of the VirtualMachineTemplate
* @return A copy of the VirtualMachineTemplate
*/
VirtualMachineTemplate * clone_template() const
{
return new VirtualMachineTemplate(
*(static_cast<VirtualMachineTemplate *>(obj_template)));
};
/**
* This function replaces the *user template*.
* @param tmpl_str new contents
* @param keep_restricted If true, the restricted attributes of the
* current template will override the new template
* @param error string describing the error if any
* @return 0 on success
*/
int replace_template(const string& tmpl_str, bool keep_restricted, string& error);
/**
* Append new attributes to the *user template*.
* @param tmpl_str new contents
* @param keep_restricted If true, the restricted attributes of the
* current template will override the new template
* @param error string describing the error if any
* @return 0 on success
*/
int append_template(const string& tmpl_str, bool keep_restricted, string& error);
/**
* This function gets an attribute from the user template
* @param name of the attribute
* @param value of the attribute
*/
void get_user_template_attribute(const char * name, string& value) const
{
user_obj_template->get(name,value);
}
/**
* Sets an error message with timestamp in the template
* @param message Message string
*/
void set_template_error_message(const string& message);
/**
* Sets an error message with timestamp in the template
* @param name of the error attribute
* @param message Message string
*/
void set_template_error_message(const string& name, const string& message);
/**
* Deletes the error message from the template
*/
void clear_template_error_message();
/**
* Sets an error message with timestamp in the template (ERROR_MONITOR)
* @param message Message string
*/
void set_template_monitor_error(const string& message);
/**
* Deletes the error message from the template (ERROR_MONITOR)
* @param message Message string
*/
void clear_template_monitor_error();
// ------------------------------------------------------------------------
// States
// ------------------------------------------------------------------------
/**
* Returns the VM state (Dispatch Manager)
* @return the VM state
*/
VmState get_state() const
{
return state;
};
/**
* Returns the VM state (life-cycle Manager)
* @return the VM state
*/
LcmState get_lcm_state() const
{
return lcm_state;
};
/**
* Sets VM state
* @param s state
*/
void set_state(VmState s)
{
state = s;
};
/**
* Sets VM LCM state
* @param s state
*/
void set_state(LcmState s)
{
lcm_state = s;
};
/**
* Sets the re-scheduling flag
* @param set or unset the re-schedule flag
*/
void set_resched(bool do_sched)
{
if ( do_sched == true )
{
resched = 1;
}
else
{
resched = 0;
}
};
// ------------------------------------------------------------------------
// Timers & Requirements
// ------------------------------------------------------------------------
/**
* Gets time from last information polling.
* @return time of last poll (epoch) or 0 if never polled
*/
time_t get_last_poll() const
{
return last_poll;
};
/**
* Sets time of last information polling.
* @param poll time in epoch, normally time(0)
*/
void set_last_poll(time_t poll)
{
last_poll = poll;
};
/**
* Get the VM physical requirements for the host.
* @param cpu
* @param memory
* @param disk
*/
void get_requirements (int& cpu, int& memory, int& disk);
/**
* Checks if the resize parameters are valid
* @param cpu New CPU. 0 means unchanged.
* @param memory New MEMORY. 0 means unchanged.
* @param vcpu New VCPU. 0 means unchanged.
* @param error_str Error reason, if any
*
* @return 0 on success
*/
int check_resize (float cpu, int memory, int vcpu, string& error_str);
/**
* Resize the VM capacity
* @param cpu
* @param memory
* @param vcpu
* @param error_str Error reason, if any
*
* @return 0 on success
*/
int resize (float cpu, int memory, int vcpu, string& error_str);
// ------------------------------------------------------------------------
// Network Leases & Disk Images
// ------------------------------------------------------------------------
/**
* Get all network leases for this Virtual Machine
* @return 0 if success
*/
int get_network_leases(string &error_str);
/**
* Releases all network leases taken by this Virtual Machine
*/
void release_network_leases();
/**
* Releases the network lease taken by this NIC
*
* @param nic NIC to be released
* @param vmid Virtual Machine oid
*
* @return 0 on success, -1 otherwise
*/
static int release_network_leases(VectorAttribute const * nic, int vmid);
/**
* Get all disk images for this Virtual Machine
* @param error_str Returns the error reason, if any
* @return 0 if success
*/
int get_disk_images(string &error_str);
/**
* Releases all disk images taken by this Virtual Machine
*/
void release_disk_images();
/**
* Check if the given disk is volatile
*/
static bool isVolatile(const VectorAttribute * disk);
/**
* Check if the template contains a volatile disk
*/
static bool isVolatile(const Template * tmpl);
/**
* Return the total SIZE of volatile disks
*/
static long long get_volatile_disk_size(Template * tmpl);
// ------------------------------------------------------------------------
// Context related functions
// ------------------------------------------------------------------------
/**
* Writes the context file for this VM, and gets the paths to be included
* in the context block device (CBD)
* @param files space separated list of paths to be included in the CBD
* @param disk_id CONTEXT/DISK_ID attribute value
* @param token_password Password to encrypt the token, if it is set
* @return -1 in case of error, 0 if the VM has no context, 1 on success
*/
int generate_context(string &files, int &disk_id, string& token_password);
// -------------------------------------------------------------------------
// Datastore related functions
// -------------------------------------------------------------------------
/**
* Gest the associated image to the given disk_id
* @param disk_id of the VM
* @param hot is this a save_as hot operation
* @param err_str describing the error
* @return -1 if the image cannot saveas
*/
int get_image_from_disk(int disk_id, bool hot, string& err_str);
/**
* Sets the corresponding SAVE_AS state.
* @param disk_id Index of the disk to save
* @param hot is this a save_as hot operation
* @return 0 if the VM can be saved as
*/
int set_saveas_state(int disk_id, bool hot);
/**
* Clears the SAVE_AS state, moving the VM to the original state.
* @param disk_id Index of the disk to save
* @param hot is this a save_as hot operation
* @return 0 if the VM was in a SAVE_AS state
*/
int clear_saveas_state(int disk_id, bool hot);
/**
* Set the SAVE_AS attribute for the "disk_id"th disk.
* @param disk_id Index of the disk to save
* @param source to save the disk (SAVE_AS_SOURCE)
* @param img_id ID of the image this disk will be saved to (SAVE_AS).
*/
int save_disk(int disk_id,
const string& source,
int img_id);
/**
* Set the SAVE_AS attribute for the "disk_id"th disk.
* @param disk_id Index of the disk to save
* @param source to save the disk (SAVE_AS_SOURCE)
* @param img_id ID of the image this disk will be saved to (SAVE_AS).
*/
int save_disk_hot(int disk_id,
const string& source,
int img_id);
/**
* Get the original image id of the disk. It also checks that the disk can
* be saved_as.
* @param disk_id Index of the disk to save
* @param error_str describes the error
* @return -1 if failure
*/
int get_saveas_disk_hot(int& disk_id, string& source, int& image_id);
/**
* Clears the save_as attributes of the disk being (hot) saved as
*
* @param img_id ID of the image this disk will be saved to. Can be
* -1 if it is not found
* @return 0 if a disk with (HOTPLUG_)SAVE_AS was cleaned
*/
int cancel_saveas_disk(int& image_id);
// ------------------------------------------------------------------------
// Authorization related functions
// ------------------------------------------------------------------------
/**
* Sets an authorization request for a VirtualMachine template based on
* the images and networks used
* @param uid for template owner
* @param ar the AuthRequest object
* @param tmpl the virtual machine template
*/
static void set_auth_request(int uid,
AuthRequest& ar,
VirtualMachineTemplate *tmpl);
// -------------------------------------------------------------------------
// Hotplug related functions
// -------------------------------------------------------------------------
/**
* Collects information about VM DISKS
* @param max_disk_id of the VM
* @param used_targets by the DISKS of the VM
*/
void get_disk_info(int& max_disk_id, set<string>& used_targets);
/**
* Get the IMAGE_ID of the image that's being saved as hot
* @param disk_id of the DISK
* @param image_id id of the image being saved
* @return IMAGE_ID on success, -1 otherwise
*/
int get_disk_hot_info(int& image_id, int& disk_id, string& source);
/**
* Generate a DISK attribute to be attached to the VM.
* @param tmpl Template containing a single DISK vector attribute.
* @param used_targets targets in use by current DISKS
* @param max_disk_id Max DISK/DISK_ID of the VM
* @param uid of the VM owner
* @param image_id returns the id of the acquired image
* @param error_str describes the error
*
* @return a new VectorAttribute with the DISK (should be freed if not
* added to the template), 0 in case of error;
*/
static VectorAttribute * set_up_attach_disk(
int vm_id,
VirtualMachineTemplate * tmpl,
set<string>& used_targets,
int max_disk_id,
int uid,
int& image_id,
string& error_str);
/**
* Returns the disk that is waiting for an attachment action
*
* @return the disk waiting for an attachment action, or 0
*/
VectorAttribute* get_attach_disk();
/**
* Cleans the ATTACH = YES attribute from the disks
*/
void clear_attach_disk();
/**
* Deletes the DISK that was in the process of being attached
*
* @return the DISK or 0 if no disk was deleted
*/
VectorAttribute * delete_attach_disk();
/**
* Adds a new disk to the virtual machine template. The disk should be
* generated by the build_attach_disk
* @param new_disk must be allocated in the heap
*/
void set_attach_disk(VectorAttribute * new_disk)
{
new_disk->replace("ATTACH", "YES");
obj_template->set(new_disk);
}
/**
* Sets the attach attribute to the given disk
* @param disk_id of the DISK
* @return 0 if the disk_id was found -1 otherwise
*/
int set_attach_disk(int disk_id);
// ------------------------------------------------------------------------
// NIC Hotplug related functions
// ------------------------------------------------------------------------
/**
* Collects information about VM DISKS
* @param max_disk_id of the VM
*/
void get_nic_info(int& max_nic_id);
/**
* Generates a NIC attribute to be attached to the VM.
* @param tmpl Template containing a single NIC vector attribute.
* @param max_nic_id Max NIC/NIC_ID of the VM
* @param uid of the VM owner
* @param network_id returns the id of the acquired network
* @param error_str describes the error
*
* @return a new VectorAttribute with the DISK (should be freed if not
* added to the template), 0 in case of error
*/
static VectorAttribute * set_up_attach_nic(
int vm_id,
VirtualMachineTemplate * tmpl,
int max_nic_id,
int uid,
int& network_id,
string& error_str);
/**
* Cleans the ATTACH = YES attribute from the NICs
*/
void clear_attach_nic();
/**
* Deletes the NIC that was in the process of being attached
*
* @return the deleted NIC or 0 if none was deleted
*/
VectorAttribute * delete_attach_nic();
/**
* Adds a new NIC to the virtual machine template. The NIC should be
* generated by the build_attach_nic
* @param new_nic must be allocated in the heap
*/
void set_attach_nic(VectorAttribute * new_nic)
{
new_nic->replace("ATTACH", "YES");
obj_template->set(new_nic);
}
/**
* Sets the attach attribute to the given NIC
* @param nic_id of the NIC
* @return 0 if the nic_id was found, -1 otherwise
*/
int set_attach_nic(int nic_id);
// ------------------------------------------------------------------------
// Snapshot related functions
// ------------------------------------------------------------------------
/**
* Creates a new Snapshot attribute, and sets it to ACTIVE=YES
*
* @param name for the new Snapshot. If it is empty, the generated name
* will be placed in this param
* @param snap_id Id of the new snapshot
*
* @return 0 on success
*/
int new_snapshot(string& name, int& snap_id);
/**
* Sets the given Snapshot as ACTIVE=YES
*
* @param snap_id the snapshow ID
*
* @return 0 on success
*/
int set_active_snapshot(int snap_id);
/**
* Replaces HYPERVISOR_ID for the active SNAPSHOT
*
* @param hypervisor_id Id returned by the hypervisor for the newly
* created snapshot
*/
void update_snapshot_id(string& hypervisor_id);
/**
* Cleans the ACTIVE = YES attribute from the snapshots
*/
void clear_active_snapshot();
/**
* Deletes the SNAPSHOT that was in the process of being created
*/
void delete_active_snapshot();
/**
* Deletes all SNAPSHOT attributes
*/
void delete_snapshots();
private:
// -------------------------------------------------------------------------
// Friends
// -------------------------------------------------------------------------
friend class VirtualMachinePool;
// *************************************************************************
// Virtual Machine Attributes
// *************************************************************************
// -------------------------------------------------------------------------
// VM Scheduling & Managing Information
// -------------------------------------------------------------------------
/**
* Last time (in epoch) that the VM was polled to get its status
*/
time_t last_poll;
// -------------------------------------------------------------------------
// Virtual Machine Description
// -------------------------------------------------------------------------
/**
* The state of the virtual machine.
*/
VmState state;
/**
* The state of the virtual machine (in the Life-cycle Manager).
*/
LcmState lcm_state;
/**
* Marks the VM as to be re-scheduled
*/
int resched;
/**
* Start time, the VM enter the nebula system (in epoch)
*/
time_t stime;
/**
* Exit time, the VM leave the nebula system (in epoch)
*/
time_t etime;
/**
* Deployment specific identification string, as returned by the VM driver
*/
string deploy_id;
/**
* Memory in Kilobytes used by the VM
*/
int memory;
/**
* CPU usage (percent)
*/
int cpu;
/**
* Network usage, transmitted bytes
*/
long long net_tx;
/**
* Network usage, received bytes
*/
long long net_rx;
/**
* History record, for the current host
*/
History * history;
/**
* History record, for the previous host
*/
History * previous_history;
/**
* Complete set of history records for the VM
*/
vector<History *> history_records;
// -------------------------------------------------------------------------
// Logging & Dirs
// -------------------------------------------------------------------------
/**
* Log class for the virtual machine, it writes log messages in
* $ONE_LOCATION/var/$VID/vm.log
* or, in case that OpenNebula is installed in root
* /var/log/one/$VM_ID.log
* For the syslog... TODO
*/
Log * _log;
/**
* User template to store custom metadata. This template can be updated
*
*/
VirtualMachineTemplate * user_obj_template;
// *************************************************************************
// DataBase implementation (Private)
// *************************************************************************
/**
* Bootstraps the database table(s) associated to the VirtualMachine
* @return 0 on success
*/
static int bootstrap(SqlDB * db)
{
int rc;
ostringstream oss_vm(VirtualMachine::db_bootstrap);
ostringstream oss_monit(VirtualMachine::monit_db_bootstrap);
ostringstream oss_hist(History::db_bootstrap);
rc = db->exec(oss_vm);
rc += db->exec(oss_monit);
rc += db->exec(oss_hist);
return rc;
};
/**
* Callback function to unmarshall a VirtualMachine object
* (VirtualMachine::select)
* @param num the number of columns read from the DB
* @param names the column names
* @param vaues the column values
* @return 0 on success
*/
int select_cb(void *nil, int num, char **names, char ** values);
/**
* 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);
/**
* Updates the VM history record
* @param db pointer to the db
* @return 0 on success
*/
int update_history(SqlDB * db)
{
if ( history != 0 )
{
return history->update(db);
}
else
return -1;
};
/**
* Updates the previous history record
* @param db pointer to the db
* @return 0 on success
*/
int update_previous_history(SqlDB * db)
{
if ( previous_history != 0 )
{
return previous_history->update(db);
}
else
return -1;
};
/**
* Inserts the last monitoring, and deletes old monitoring entries.
*
* @param db pointer to the db
* @return 0 on success
*/
int update_monitoring(SqlDB * db);
// -------------------------------------------------------------------------
// Attribute Parser
// -------------------------------------------------------------------------
/**
* Mutex to perform just one attribute parse at a time
*/
static pthread_mutex_t lex_mutex;
/**
* Generates image attributes (DS_ID, TM_MAD, SOURCE...) for KERNEL and
* INITRD files.
* @param os attribute of the VM template
* @param base_name of the attribute "KERNEL", or "INITRD"
* @param base_type of the image attribute KERNEL, RAMDISK
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int set_os_file(VectorAttribute * os,
const string& base_name,
Image::ImageType base_type,
string& error_str);
/**
* Parse the "OS" attribute of the template by substituting
* $FILE variables
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int parse_os(string& error_str);
/**
* Parse the "CONTEXT" attribute of the template by substituting
* $VARIABLE, $VARIABLE[ATTR] and $VARIABLE[ATTR, ATTR = VALUE]
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int parse_context(string& error_str);
/**
* Parse the "SCHED_REQUIREMENTS" attribute of the template by substituting
* $VARIABLE, $VARIABLE[ATTR] and $VARIABLE[ATTR, ATTR = VALUE]
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int parse_requirements(string& error_str);
/**
* Adds automatic placement requirements: Datastore and Cluster
*
* @param error_str Returns the error reason, if any
* @return 0 on success
*/
int automatic_requirements(string& error_str);
/**
* Parse the "GRAPHICS" attribute and generates a default PORT if not
* defined
*/
void parse_graphics();
/**
* Searches the meaningful attributes and moves them from the user template
* to the internal template
*/
void parse_well_known_attributes();
/**
* Function that renders the VM in XML format optinally including
* extended information (all history records)
* @param xml the resulting XML string
* @param n_history Number of history records to include:
* 0: none
* 1: the last one
* 2: all
* @return a reference to the generated string
*/
string& to_xml_extended(string& xml, int n_history) const;
protected:
//**************************************************************************
// Constructor
//**************************************************************************
VirtualMachine(int id,
int uid,
int gid,
const string& uname,
const string& gname,
int umask,
VirtualMachineTemplate * _vm_template);
virtual ~VirtualMachine();
// *************************************************************************
// DataBase implementation
// *************************************************************************
static const char * table;
static const char * db_names;
static const char * db_bootstrap;
static const char * monit_table;
static const char * monit_db_names;
static const char * monit_db_bootstrap;
/**
* Reads the Virtual Machine (identified with its OID) from the database.
* @param db pointer to the db
* @return 0 on success
*/
int select(SqlDB * db);
/**
* Writes the Virtual Machine and its associated template in the database.
* @param db pointer to the db
* @return 0 on success
*/
int insert(SqlDB * db, string& error_str);
/**
* Writes/updates the Virtual Machine data fields in the database.
* @param db pointer to the db
* @return 0 on success
*/
int update(SqlDB * db)
{
string error_str;
return insert_replace(db, true, error_str);
}
/**
* Deletes a VM from the database and all its associated information
* @param db pointer to the db
* @return -1
*/
int drop(SqlDB * db)
{
NebulaLog::log("ONE",Log::ERROR, "VM Drop not implemented!");
return -1;
}
// *************************************************************************
// Helpers
// *************************************************************************
VectorAttribute* get_disk(int disk_id);
};
#endif /*VIRTUAL_MACHINE_H_*/
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