/**
* Deletes triggers from DB that are missing in XML.
*
* @return null
*/
protected function deleteMissingTriggers()
{
if (!$this->options['triggers']['deleteMissing']) {
return;
}
$processedHostIds = $this->importedObjectContainer->getHostIds();
$processedTemplateIds = $this->importedObjectContainer->getTemplateIds();
$processedHostIds = array_merge($processedHostIds, $processedTemplateIds);
// no hosts or templates have been processed
if (!$processedHostIds) {
return;
}
$triggersXML = array();
$allTriggers = $this->getFormattedTriggers();
if ($allTriggers) {
foreach ($allTriggers as $trigger) {
$triggerId = $this->referencer->resolveTrigger($trigger['description'], $trigger['expression']);
if ($triggerId) {
$triggersXML[$triggerId] = $triggerId;
}
}
}
$dbTriggerIds = API::Trigger()->get(array('output' => array('triggerid'), 'hostids' => $processedHostIds, 'selectHosts' => array('hostid'), 'preservekeys' => true, 'nopermissions' => true, 'inherited' => false, 'filter' => array('flags' => ZBX_FLAG_DISCOVERY_NORMAL)));
// check that potentially deletable trigger belongs to same hosts that are in XML
// if some triggers belong to more hosts than current XML contains, don't delete them
$triggersToDelete = array_diff_key($dbTriggerIds, $triggersXML);
$triggerIdsToDelete = array();
$processedHostIds = array_flip($processedHostIds);
foreach ($triggersToDelete as $triggerId => $trigger) {
$triggerHostIds = array_flip(zbx_objectValues($trigger['hosts'], 'hostid'));
if (!array_diff_key($triggerHostIds, $processedHostIds)) {
$triggerIdsToDelete[] = $triggerId;
}
}
if ($triggerIdsToDelete) {
API::Trigger()->delete($triggerIdsToDelete);
}
// refresh triggers because template triggers can be inherited to host and used in maps
$this->referencer->refreshTriggers();
}
/**
* Import triggers.
*/
protected function processTriggers()
{
$allTriggers = $this->getFormattedTriggers();
if (empty($allTriggers)) {
return;
}
$triggersToCreate = array();
$triggersToUpdate = array();
$triggersToCreateDependencies = array();
foreach ($allTriggers as $trigger) {
$triggerId = $this->referencer->resolveTrigger($trigger['description'], $trigger['expression']);
if ($triggerId) {
$deps = array();
foreach ($trigger['dependencies'] as $dependency) {
$depTriggerId = $this->referencer->resolveTrigger($dependency['name'], $dependency['expression']);
if (!$depTriggerId) {
throw new Exception(_s('Trigger "%1$s" depends on trigger "%2$s", which does not exist.', $trigger['description'], $dependency['name']));
}
$deps[] = array('triggerid' => $depTriggerId);
}
$trigger['dependencies'] = $deps;
$trigger['triggerid'] = $triggerId;
$triggersToUpdate[] = $trigger;
} else {
$triggersToCreateDependencies[] = $trigger['dependencies'];
unset($trigger['dependencies']);
$triggersToCreate[] = $trigger;
}
}
$triggerDependencies = array();
$newTriggers = array();
if ($this->options['triggers']['createMissing'] && $triggersToCreate) {
$newTriggerIds = API::Trigger()->create($triggersToCreate);
foreach ($newTriggerIds['triggerids'] as $tnum => $triggerId) {
$trigger = $triggersToCreate[$tnum];
$this->referencer->addTriggerRef($trigger['description'], $trigger['expression'], $triggerId);
$newTriggers[$triggerId] = $trigger;
}
}
// if we have new triggers with dependencies and they were created, create their dependencies
if ($triggersToCreateDependencies && isset($newTriggerIds)) {
foreach ($newTriggerIds['triggerids'] as $tnum => $triggerId) {
$deps = array();
foreach ($triggersToCreateDependencies[$tnum] as $dependency) {
$depTriggerId = $this->referencer->resolveTrigger($dependency['name'], $dependency['expression']);
if (!$depTriggerId) {
$trigger = $newTriggers[$triggerId];
throw new Exception(_s('Trigger "%1$s" depends on trigger "%2$s", which does not exist.', $trigger['description'], $dependency['name']));
}
$deps[] = array('triggerid' => $depTriggerId);
}
if (!empty($deps)) {
$triggerDependencies[] = array('triggerid' => $triggerId, 'dependencies' => $deps);
}
}
}
if ($this->options['triggers']['updateExisting'] && $triggersToUpdate) {
API::Trigger()->update($triggersToUpdate);
}
if ($triggerDependencies) {
API::Trigger()->update($triggerDependencies);
}
// refresh triggers because template triggers can be inherited to host and used in maps
$this->referencer->refreshTriggers();
}
