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<?php
/*
** Zabbix
** Copyright (C) 2001-2018 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 serviceAlgorithm($algorithm = null) {
$algorithms = [
SERVICE_ALGORITHM_MAX => _('Problem, if at least one child has a problem'),
SERVICE_ALGORITHM_MIN => _('Problem, if all children have problems'),
SERVICE_ALGORITHM_NONE => _('Do not calculate')
];
if ($algorithm === null) {
return $algorithms;
}
elseif (isset($algorithms[$algorithm])) {
return $algorithms[$algorithm];
}
else {
return false;
}
}
function get_service_children($serviceid, $soft = 0) {
$children = [];
$result = DBselect(
'SELECT sl.servicedownid'.
' FROM services_links sl'.
' WHERE sl.serviceupid='.zbx_dbstr($serviceid).
($soft ? '' : ' AND sl.soft=0')
);
while ($row = DBfetch($result)) {
$children[] = $row['servicedownid'];
$children = array_merge($children, get_service_children($row['servicedownid']));
}
return $children;
}
/**
* 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 $service = [], array $dependency = []) {
if (!$service) {
$serviceNode = [
'id' => 0,
'parentid' => 0,
'caption' => _('root'),
'trigger' => [],
'action' => new CHorList([
(new CLink(_('Add child'), 'services.php?form=1&parentname='._('root')))
->addClass(ZBX_STYLE_LINK_ACTION)
]),
'algorithm' => SPACE,
'description' => SPACE
];
$service = $serviceNode;
$service['serviceid'] = 0;
$service['dependencies'] = [];
$service['trigger'] = [];
// add all top level services as children of "root"
foreach ($services as $topService) {
if (!$topService['parent']) {
$service['dependencies'][] = [
'servicedownid' => $topService['serviceid'],
'soft' => 0,
'linkid' => 0
];
}
}
$tree = [$serviceNode];
}
else {
// service is deletable only if it has no hard dependency
$deletable = true;
foreach ($service['dependencies'] as $dep) {
if ($dep['soft'] == 0) {
$deletable = false;
break;
}
}
$serviceNode = [
'id' => $service['serviceid'],
'caption' => new CLink($service['name'], 'services.php?form=1&serviceid='.$service['serviceid']),
'action' => new CHorList([
(new CLink(_('Add child'),
'services.php?form=1&parentid='.$service['serviceid'].'&parentname='.urlencode($service['name'])
))->addClass(ZBX_STYLE_LINK_ACTION),
$deletable
? (new CLink(_('Delete'), 'services.php?delete=1&serviceid='.$service['serviceid']))
->addClass(ZBX_STYLE_LINK_ACTION)
->addConfirmation(_s('Delete service "%1$s"?', $service['name']))
->addSID()
: null
]),
'description' => $service['trigger'] ? $service['trigger']['description'] : '',
'parentid' => $parentService ? $parentService['serviceid'] : 0,
'algorithm' => serviceAlgorithm($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']))->addClass('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 $service = [], array $dependency = []) {
// if no parent service is given, start from the root
if (!$service) {
$serviceNode = [
'id' => 0,
'caption' => _('root'),
'reason' => '',
'sla' => '',
'sla2' => '',
'sla3' => '',
'parentid' => 0,
'status' => ''
];
$service = $serviceNode;
$service['serviceid'] = 0;
$service['dependencies'] = [];
$service['trigger'] = [];
// add all top level services as children of "root"
foreach ($services as $topService) {
if (!$topService['parent']) {
$service['dependencies'][] = [
'servicedownid' => $topService['serviceid'],
'soft' => 0,
'linkid' => 0
];
}
}
$tree = [$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 = [
'today' => 'daily',
'week' => 'weekly',
'month' => 'monthly',
'year' => 'yearly',
24 => 'daily',
24 * 7 => 'weekly',
24 * 30 => 'monthly',
24 * DAY_IN_YEAR => 'yearly'
];
$caption = new CLink($service['name'],
'zabbix.php?action=report.services'.'&serviceid='.$service['serviceid'].'&period='.$periods[$period]
);
$trigger = $service['trigger'];
if ($trigger) {
$caption = [
$caption,
' - ',
new CLink($trigger['description'],
(new CUrl('zabbix.php'))
->setArgument('action', 'problem.view')
->setArgument('filter_triggerids[]', $trigger['triggerid'])
->setArgument('filter_set', '1')
)
];
}
// reason
$reason = [];
foreach ($serviceSla['problems'] as $problemTrigger) {
if ($reason) {
$reason[] = ', ';
}
$reason[] = new CLink($problemTrigger['description'],
(new CUrl('zabbix.php'))
->setArgument('action', 'problem.view')
->setArgument('filter_triggerids[]', $problemTrigger['triggerid'])
->setArgument('filter_set', '1')
);
}
// sla
$sla = '';
$sla2 = '';
$sla3 = '';
if ($service['showsla'] && $slaValues['sla'] !== null) {
$sla_good = $slaValues['sla'];
$sla_bad = 100 - $slaValues['sla'];
$width = 160;
$width_red = $width * min($sla_bad, 20) / 20;
$width_green = $width - $width_red;
$sla = (new CDiv(
new CLink([
(new CSpan([new CSpan('80%'), new CSpan('100%')]))->addClass(ZBX_STYLE_PROGRESS_BAR_LABEL),
$width_green > 0
? (new CSpan(' '))
->addClass(ZBX_STYLE_PROGRESS_BAR_BG)
->addClass(ZBX_STYLE_GREEN_BG)
->setAttribute('style', 'width: '.$width_green.'px;')
: null,
$width_red > 0
? (new CSpan(' '))
->addClass(ZBX_STYLE_PROGRESS_BAR_BG)
->addClass(ZBX_STYLE_RED_BG)
->setAttribute('style', 'width: '.$width_red.'px;')
: null
], 'srv_status.php?serviceid='.$service['serviceid'].'&showgraph=1'.url_param('path'))
))
->addClass(ZBX_STYLE_PROGRESS_BAR_CONTAINER)
->setTitle(_s('Only the last 20%% of the indicator is displayed.'));
$sla2 = (new CSpan(sprintf('%.4f', $sla_bad)))
->addClass($service['goodsla'] > $sla_good ? ZBX_STYLE_RED : ZBX_STYLE_GREEN);
$sla3 = [
(new CSpan(sprintf('%.4f', $sla_good)))
->addClass($service['goodsla'] > $sla_good ? ZBX_STYLE_RED : ZBX_STYLE_GREEN),
' / ',
sprintf('%.4f', $service['goodsla'])
];
}
$serviceNode = [
'id' => $service['serviceid'],
'caption' => $caption,
'reason' => $reason,
'sla' => $sla,
'sla2' => $sla2,
'sla3' => $sla3,
'parentid' => ($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']))->addClass('service-caption-soft');
$tree[$serviceNode['id'].'.'.$dependency['linkid']] = $serviceNode;
}
}
/**
* Calculates the current service status based on it's child services.
*
* The new statuses are written to the $services array in the "newStatus" property.
*
* @param string $rootServiceId id of the service to start calculation from
* @param array $servicesLinks array with service IDs as keys and arrays of child service IDs as values
* @param array $services array of services with IDs as keys
* @param array $triggers array of triggers with trigger IDs as keys
*/
function calculateItServiceStatus($rootServiceId, array $servicesLinks, array &$services, array $triggers) {
$service = &$services[$rootServiceId];
// don't calculate a thread if it is already calculated
// it can be with soft links
if (isset($service['newStatus'])) {
return;
}
$newStatus = SERVICE_STATUS_OK;
// leaf service with a trigger
if ($service['triggerid'] != 0) {
if ($service['algorithm'] != SERVICE_ALGORITHM_NONE) {
$trigger = $triggers[$service['triggerid']];
$newStatus = calculateItServiceStatusByTrigger($trigger['status'], $trigger['value'], $trigger['priority']);
}
}
elseif (isset($servicesLinks[$rootServiceId])) {
// calculate status depending on children status
$statuses = [];
foreach ($servicesLinks[$rootServiceId] as $rootServiceId) {
calculateItServiceStatus($rootServiceId, $servicesLinks, $services, $triggers);
$statuses[] = $services[$rootServiceId]['newStatus'];
}
if ($statuses && $service['algorithm'] != SERVICE_ALGORITHM_NONE) {
$maxSeverity = max($statuses);
// always return the maximum status of child services
if ($service['algorithm'] == SERVICE_ALGORITHM_MAX && $maxSeverity != SERVICE_STATUS_OK) {
$newStatus = $maxSeverity;
}
elseif (min($statuses) != SERVICE_STATUS_OK) {
$newStatus = $maxSeverity;
}
}
}
$service['newStatus'] = $newStatus;
}
/**
* Checks the status of the trigger and returns the corresponding service status.
*
* @param int $triggerStatus
* @param int $triggerValue
* @param int $triggerPriority
*
* @return int
*/
function calculateItServiceStatusByTrigger($triggerStatus, $triggerValue, $triggerPriority) {
if ($triggerStatus == TRIGGER_STATUS_DISABLED || $triggerValue == TRIGGER_VALUE_FALSE) {
return SERVICE_STATUS_OK;
}
return $triggerPriority;
}
/**
* Updates the status of all services
*/
function updateItServices() {
$servicesLinks = [];
$services = [];
$rootServiceIds = [];
$triggers = [];
// auxiliary arrays
$triggerIds = [];
$servicesLinksDown = [];
$result = DBselect('SELECT sl.serviceupid,sl.servicedownid FROM services_links sl');
while ($row = DBfetch($result)) {
$servicesLinks[$row['serviceupid']][] = $row['servicedownid'];
$servicesLinksDown[$row['servicedownid']] = true;
}
$result = DBselect('SELECT s.serviceid,s.algorithm,s.triggerid,s.status FROM services s ORDER BY s.serviceid');
while ($row = DBfetch($result)) {
$services[$row['serviceid']] = [
'serviceid' => $row['serviceid'],
'algorithm' => $row['algorithm'],
'triggerid' => $row['triggerid'],
'status' => $row['status']
];
if (!isset($servicesLinksDown[$row['serviceid']])) {
$rootServiceIds[] = $row['serviceid'];
}
if ($row['triggerid'] != 0) {
$triggerIds[$row['triggerid']] = true;
}
}
if ($triggerIds) {
$result = DBselect(
'SELECT t.triggerid,t.priority,t.status,t.value'.
' FROM triggers t'.
' WHERE '.dbConditionInt('t.triggerid', array_keys($triggerIds))
);
while ($row = DBfetch($result)) {
$triggers[$row['triggerid']] = [
'priority' => $row['priority'],
'status' => $row['status'],
'value' => $row['value']
];
}
}
// clearing auxiliary variables
unset($triggerIds, $servicesLinksDown);
// calculating data
foreach ($rootServiceIds as $rootServiceId) {
calculateItServiceStatus($rootServiceId, $servicesLinks, $services, $triggers);
}
// updating changed data
$updates = [];
$inserts = [];
$clock = time();
foreach ($services as $service) {
if ($service['newStatus'] != $service['status']) {
$updates[] = [
'values' => ['status' => $service['newStatus']],
'where' => ['serviceid' => $service['serviceid']]
];
$inserts[] = [
'serviceid' => $service['serviceid'],
'clock' => $clock,
'value' => $service['newStatus']
];
}
}
if ($updates) {
DB::update('services', $updates);
DB::insert('service_alarms', $inserts);
}
}
/**
* 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
*/
function checkServiceTime(array $serviceTime) {
// type validation
$serviceTypes = [
SERVICE_TIME_TYPE_DOWNTIME,
SERVICE_TIME_TYPE_ONETIME_DOWNTIME,
SERVICE_TIME_TYPE_UPTIME
];
if (!isset($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.'));
}
}
/**
* Method to sort list of Services by 'sortorder' field and then by 'name' field if more entries has same 'sortorder'
* value. Separate method is needed because entries make multilevel hierarchy and branches also must be sorted according
* fields 'sortorder' and 'name'.
*
* @param array $services
*
* @return void
*/
function sortServices(array &$services) {
$sort_options = [
['field' => 'sortorder', 'order' => ZBX_SORT_UP],
['field' => 'name', 'order' => ZBX_SORT_UP]
];
// Sort first level entries.
CArrayHelper::sort($services, $sort_options);
// Sort dependencies.
foreach ($services as &$service) {
if ($service['dependencies']) {
foreach ($service['dependencies'] as &$dependent_item) {
$dependent_item['name'] = $services[$dependent_item['serviceid']]['name'];
$dependent_item['sortorder'] = $services[$dependent_item['serviceid']]['sortorder'];
}
unset($dependent_item);
CArrayHelper::sort($service['dependencies'], $sort_options);
}
}
unset($service);
}
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