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<?php
/*
** Zabbix
** Copyright (C) 2001-2014 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/*
* Function: get_service_status
*
* Description:
* Retrieve true status
*
* Author:
* Aly
*
* Comments:
* Don't forget to sync code with C!!!!
*/
function get_service_status($serviceid, $algorithm, $triggerid = null, $status = 0) {
if (is_numeric($triggerid)) {
$status = ($serv_status = get_service_status_of_trigger($triggerid)) ? $serv_status : $status;
}
if ($algorithm == SERVICE_ALGORITHM_MAX || $algorithm == SERVICE_ALGORITHM_MIN) {
$sort_order = ($algorithm == SERVICE_ALGORITHM_MAX) ? ' DESC' : '';
$result = DBselect(
'SELECT s.status'.
' FROM services s,services_links l'.
' WHERE l.serviceupid='.zbx_dbstr($serviceid).
' AND s.serviceid=l.servicedownid'.
' ORDER BY s.status'.$sort_order
);
if ($row = DBfetch($result)) {
$status = $row['status'];
}
}
return $status;
}
function serviceAlgorythm($algorythm = null) {
$algorythms = array(
SERVICE_ALGORITHM_MAX => _('Problem, if at least one child has a problem'),
SERVICE_ALGORITHM_MIN => _('Problem, if all children have problems'),
SERVICE_ALGORITHM_NONE => _('Do not calculate')
);
if ($algorythm === null) {
return $algorythms;
}
elseif (isset($algorythms[$algorythm])) {
return $algorythms[$algorythm];
}
else {
return false;
}
}
function get_service_childs($serviceid, $soft = 0) {
$childs = array();
$result = DBselect(
'SELECT sl.servicedownid'.
' FROM services_links sl'.
' WHERE sl.serviceupid='.zbx_dbstr($serviceid).
($soft ? '' : ' AND sl.soft=0')
);
while ($row = DBfetch($result)) {
$childs[] = $row['servicedownid'];
$childs = array_merge($childs, get_service_childs($row['servicedownid']));
}
return $childs;
}
/**
* Creates nodes that can be used to display the service configuration tree using the CTree class.
*
* @see CTree
*
* @param array $services
* @param array $parentService
* @param array $service
* @param array $dependency
* @param array $tree
*/
function createServiceConfigurationTree(array $services, &$tree, array $parentService = array(), array $service = array(), array $dependency = array()) {
if (!$service) {
$caption = new CLink(_('root'), '#');
$caption->setMenuPopup(CMenuPopupHelper::getServiceConfiguration(null, _('root'), false));
$serviceNode = array(
'id' => 0,
'parentid' => 0,
'caption' => $caption,
'trigger' => array(),
'algorithm' => SPACE,
'description' => SPACE
);
$service = $serviceNode;
$service['serviceid'] = 0;
$service['dependencies'] = array();
$service['trigger'] = array();
// add all top level services as children of "root"
foreach ($services as $topService) {
if (!$topService['parent']) {
$service['dependencies'][] = array(
'servicedownid' => $topService['serviceid'],
'soft' => 0,
'linkid' => 0
);
}
}
$tree = array($serviceNode);
}
else {
// caption
$caption = new CLink($service['name'], '#');
// service is deletable only if it has no hard dependency
$deletable = true;
foreach ($service['dependencies'] as $dep) {
if ($dep['soft'] == 0) {
$deletable = false;
break;
}
}
$caption->setMenuPopup(CMenuPopupHelper::getServiceConfiguration($service['serviceid'], $service['name'], $deletable));
$serviceNode = array(
'id' => $service['serviceid'],
'caption' => $caption,
'description' => $service['trigger'] ? $service['trigger']['description'] : '-',
'parentid' => $parentService ? $parentService['serviceid'] : 0,
'algorithm' => serviceAlgorythm($service['algorithm'])
);
}
if (!$dependency || !$dependency['soft']) {
$tree[$serviceNode['id']] = $serviceNode;
foreach ($service['dependencies'] as $dependency) {
$childService = $services[$dependency['servicedownid']];
createServiceConfigurationTree($services, $tree, $service, $childService, $dependency);
}
}
else {
$serviceNode['caption'] = new CSpan($serviceNode['caption'], 'service-caption-soft');
$tree[$serviceNode['id'].'.'.$dependency['linkid']] = $serviceNode;
}
}
/**
* Creates nodes that can be used to display the SLA report tree using the CTree class.
*
* @see CTree
*
* @param array $services an array of services to display in the tree
* @param array $slaData sla report data, see CService::getSla()
* @param $period
* @param array $parentService
* @param array $service
* @param array $dependency
* @param array $tree
*/
function createServiceMonitoringTree(array $services, array $slaData, $period, &$tree, array $parentService = array(), array $service = array(), array $dependency = array()) {
// if no parent service is given, start from the root
if (!$service) {
$serviceNode = array(
'id' => 0,
'parentid' => 0,
'caption' => _('root'),
'status' => SPACE,
'sla' => SPACE,
'sla2' => SPACE,
'trigger' => array(),
'reason' => SPACE,
'graph' => SPACE,
);
$service = $serviceNode;
$service['serviceid'] = 0;
$service['dependencies'] = array();
$service['trigger'] = array();
// add all top level services as children of "root"
foreach ($services as $topService) {
if (!$topService['parent']) {
$service['dependencies'][] = array(
'servicedownid' => $topService['serviceid'],
'soft' => 0,
'linkid' => 0
);
}
}
$tree = array($serviceNode);
}
// create a not from the given service
else {
$serviceSla = $slaData[$service['serviceid']];
$slaValues = reset($serviceSla['sla']);
// caption
// remember the selected time period when following the bar link
$periods = array(
'today' => 'daily',
'week' => 'weekly',
'month' => 'monthly',
'year' => 'yearly',
24 => 'daily',
24 * 7 => 'weekly',
24 * 30 => 'monthly',
24 * DAY_IN_YEAR => 'yearly'
);
$caption = array(new CLink(
$service['name'],
'report3.php?serviceid='.$service['serviceid'].'&year='.date('Y').'&period='.$periods[$period]
));
$trigger = $service['trigger'];
if ($trigger) {
$url = new CLink($trigger['description'],
'events.php?filter_set=1&source='.EVENT_SOURCE_TRIGGERS.'&triggerid='.$trigger['triggerid']
);
$caption[] = ' - ';
$caption[] = $url;
}
// reason
$problemList = '-';
if ($serviceSla['problems']) {
$problemList = new CList(null, 'service-problems');
foreach ($serviceSla['problems'] as $problemTrigger) {
$problemList->addItem(new CLink($problemTrigger['description'],
'events.php?filter_set=1&source='.EVENT_SOURCE_TRIGGERS.'&triggerid='.$problemTrigger['triggerid']
));
}
}
// sla
$sla = '-';
$sla2 = '-';
if ($service['showsla'] && $slaValues['sla'] !== null) {
$slaGood = $slaValues['sla'];
$slaBad = 100 - $slaValues['sla'];
$p = min($slaBad, 20);
$width = 160;
$widthRed = $width * $p / 20;
$widthGreen = $width - $widthRed;
$chart1 = null;
if ($widthGreen > 0) {
$chart1 = new CDiv(null, 'sla-bar-part sla-green');
$chart1->setAttribute('style', 'width: '.$widthGreen.'px;');
}
$chart2 = null;
if ($widthRed > 0) {
$chart2 = new CDiv(null, 'sla-bar-part sla-red');
$chart2->setAttribute('style', 'width: '.$widthRed.'px;');
}
$bar = new CLink(array(
$chart1,
$chart2,
new CDiv('80%', 'sla-bar-legend sla-bar-legend-start'),
new CDiv('100%', 'sla-bar-legend sla-bar-legend-end')
), 'srv_status.php?serviceid='.$service['serviceid'].'&showgraph=1'.url_param('path'));
$bar = new CDiv($bar, 'sla-bar');
$bar->setAttribute('title', _s('Only the last 20%% of the indicator is displayed.'));
$slaBar = array(
$bar,
new CSpan(sprintf('%.4f', $slaBad), 'sla-value '.(($service['goodsla'] > $slaGood) ? 'red' : 'green'))
);
$sla = new CDiv($slaBar, 'invisible');
$sla2 = array(
new CSpan(sprintf('%.4f', $slaGood), 'sla-value '.(($service['goodsla'] > $slaGood) ? 'red' : 'green')),
'/',
new CSpan(sprintf('%.4f', $service['goodsla']), 'sla-value')
);
}
$serviceNode = array(
'id' => $service['serviceid'],
'caption' => $caption,
'description' => ($service['trigger']) ? $service['trigger']['description'] : _('None'),
'reason' => $problemList,
'sla' => $sla,
'sla2' => $sla2,
'parentid' => ($parentService) ? $parentService['serviceid'] : 0,
'status' => ($serviceSla['status'] !== null) ? $serviceSla['status'] : '-'
);
}
// hard dependencies and dependencies for the "root" node
if (!$dependency || $dependency['soft'] == 0) {
$tree[$serviceNode['id']] = $serviceNode;
foreach ($service['dependencies'] as $dependency) {
$childService = $services[$dependency['servicedownid']];
createServiceMonitoringTree($services, $slaData, $period, $tree, $service, $childService, $dependency);
}
}
// soft dependencies
else {
$serviceNode['caption'] = new CSpan($serviceNode['caption'], 'service-caption-soft');
$tree[$serviceNode['id'].'.'.$dependency['linkid']] = $serviceNode;
}
}
/**
* Recalculates the status of the given service and it's parents.
*
* Note: this function does not update the status based on the status of the linked trigger,
* the status is calculated only based on the status of the child services.
*
* @param $serviceid
*
* @return bool
*/
function update_services_rec($serviceid) {
$result = DBselect(
'SELECT l.serviceupid,s.algorithm'.
' FROM services_links l,services s'.
' WHERE s.serviceid=l.serviceupid'.
' AND l.servicedownid='.zbx_dbstr($serviceid)
);
while ($row = DBfetch($result)) {
$serviceupid = $row['serviceupid'];
$algorithm = $row['algorithm'];
if ($algorithm == SERVICE_ALGORITHM_MAX || $algorithm == SERVICE_ALGORITHM_MIN) {
$status = get_service_status($serviceupid, $algorithm);
add_service_alarm($serviceupid, $status, time());
DBexecute('UPDATE services SET status='.$status.' WHERE serviceid='.zbx_dbstr($serviceupid));
}
elseif ($algorithm != SERVICE_ALGORITHM_NONE) {
error(_('Unknown calculation algorithm of service status').SPACE.'['.$algorithm.']');
return false;
}
}
$result = DBselect('SELECT sl.serviceupid FROM services_links sl WHERE sl.servicedownid='.zbx_dbstr($serviceid));
while ($row = DBfetch($result)) {
$serviceupid = $row['serviceupid'];
update_services_rec($serviceupid); // ATTENTION: recursion!!!
}
}
/**
* Retrieves the service linked to given trigger, sets it's status to $status and propagates the status change
* to the parent services.
*
* @param string $triggerId
* @param int $status
*/
function updateServices($triggerId, $status) {
DBexecute('UPDATE services SET status='.zbx_dbstr($status).' WHERE triggerid='.zbx_dbstr($triggerId));
$result = DBselect('SELECT s.serviceid FROM services s WHERE s.triggerid='.zbx_dbstr($triggerId));
while ($row = DBfetch($result)) {
add_service_alarm($row['serviceid'], $status, time());
update_services_rec($row['serviceid']);
}
}
/*
* Function: update_services_status_all
*
* Description:
* Cleaning parent nodes from triggers, updating ALL services status.
*
* Comments: !!! Don't forget sync code with C !!!
*
*/
function update_services_status_all() {
$result = DBselect(
'SELECT s.serviceid,s.algorithm,s.triggerid'.
' FROM services s'.
' WHERE s.serviceid NOT IN ('.
'SELECT DISTINCT sl.serviceupid'.
' FROM services_links sl'.
')'
);
while ($row = DBfetch($result)) {
$status = get_service_status($row['serviceid'], $row['algorithm'], $row['triggerid']);
DBexecute('UPDATE services SET status='.$status.' WHERE serviceid='.$row['serviceid']);
add_service_alarm($row['serviceid'], $status, time());
}
$result = DBselect(
'SELECT MAX(sl.servicedownid) AS serviceid,sl.serviceupid'.
' FROM services_links sl'.
' WHERE sl.servicedownid NOT IN ('.
'SELECT DISTINCT sl.serviceupid FROM services_links sl'.
')'.
' GROUP BY sl.serviceupid'
);
while ($row = DBfetch($result)) {
update_services_rec($row['serviceid']);
}
}
/******************************************************************************
* *
* Comments: !!! Don't forget sync code with C !!! *
* *
******************************************************************************/
function latest_service_alarm($serviceid, $status) {
$result = DBselect(
'SELECT sa.servicealarmid,sa.value'.
' FROM service_alarms sa'.
' WHERE sa.serviceid='.zbx_dbstr($serviceid).
' ORDER BY sa.servicealarmid DESC', 1
);
$row = DBfetch($result);
return ($row && $row['value'] == $status);
}
/******************************************************************************
* *
* Comments: !!! Don't forget sync code with C !!! *
* *
******************************************************************************/
function add_service_alarm($serviceid, $status, $clock) {
if (latest_service_alarm($serviceid, $status)) {
return true;
}
return DBexecute('INSERT INTO service_alarms (servicealarmid,serviceid,clock,value) VALUES ('.get_dbid('service_alarms', 'servicealarmid').','.zbx_dbstr($serviceid).','.zbx_dbstr($clock).','.zbx_dbstr($status).')');
}
/**
* Validate the new service time. Validation is implemented as a separate function to be available directly from the
* frontend.
*
* @throws APIException if the given service time is invalid
*
* @param array $serviceTime
*
* @return void
*/
function checkServiceTime(array $serviceTime) {
// type validation
$serviceTypes = array(
SERVICE_TIME_TYPE_DOWNTIME,
SERVICE_TIME_TYPE_ONETIME_DOWNTIME,
SERVICE_TIME_TYPE_UPTIME
);
if (!isset($serviceTime['type']) || !in_array($serviceTime['type'], $serviceTypes)) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Incorrect service time type.'));
}
// one-time downtime validation
if ($serviceTime['type'] == SERVICE_TIME_TYPE_ONETIME_DOWNTIME) {
if (!isset($serviceTime['ts_from']) || !validateUnixTime($serviceTime['ts_from'])) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Incorrect service start time.'));
}
if (!isset($serviceTime['ts_to']) || !validateUnixTime($serviceTime['ts_to'])) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Incorrect service end time.'));
}
}
// recurring downtime validation
else {
if (!isset($serviceTime['ts_from']) || !zbx_is_int($serviceTime['ts_from']) || $serviceTime['ts_from'] < 0 || $serviceTime['ts_from'] > SEC_PER_WEEK) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Incorrect service start time.'));
}
if (!isset($serviceTime['ts_to']) || !zbx_is_int($serviceTime['ts_to']) || $serviceTime['ts_to'] < 0 || $serviceTime['ts_to'] > SEC_PER_WEEK) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Incorrect service end time.'));
}
}
if ($serviceTime['ts_from'] >= $serviceTime['ts_to']) {
throw new APIException(ZBX_API_ERROR_PARAMETERS, _('Service start time must be less than end time.'));
}
}
|