function update_template_dependencies_for_host($hostid)
{
$db_triggers = get_triggers_by_hostid($hostid);
while ($trigger_data = DBfetch($db_triggers)) {
$db_chd_triggers = get_triggers_by_templateid($trigger_data['triggerid']);
while ($chd_trigger_data = DBfetch($db_chd_triggers)) {
update_trigger($chd_trigger_data['triggerid'], NULL, NULL, NULL, NULL, NULL, NULL, NULL, replace_template_dependencies(get_trigger_dependencies_by_triggerid($trigger_data['triggerid']), $hostid), $trigger_data['triggerid']);
}
}
}
/**
* Updates the child of the templated trigger on the given host. Trigger inheritance will not propagate to
* child hosts.
*
* @param array $trigger a templated trigger
* @param array $chdHost the target host
* @param array $triggerTemplates the templates, to which the templated trigger belongs
*
* @return array|mixed the updated child trigger
*/
protected function inheritOnHost(array $trigger, array $chdHost, array $triggerTemplates)
{
$newTrigger = $trigger;
$newTrigger['templateid'] = $trigger['triggerid'];
unset($newTrigger['triggerid']);
if (isset($trigger['dependencies'])) {
$deps = zbx_objectValues($trigger['dependencies'], 'triggerid');
$newTrigger['dependencies'] = replace_template_dependencies($deps, $chdHost['hostid']);
}
$expressionData = new CTriggerExpression();
$expressionData->parse($trigger['expression']);
$newTrigger['expression'] = $trigger['expression'];
// replace template separately in each expression, only in beginning (host part)
$exprPart = end($expressionData->expressions);
do {
foreach ($triggerTemplates as $triggerTemplate) {
if ($triggerTemplate['host'] == $exprPart['host']) {
$exprPart['host'] = $chdHost['host'];
break;
}
}
$newTrigger['expression'] = substr_replace($newTrigger['expression'], '{' . $exprPart['host'] . ':' . $exprPart['item'] . '.' . $exprPart['function'] . '}', $exprPart['pos'], strlen($exprPart['expression']));
} while ($exprPart = prev($expressionData->expressions));
// check if a child trigger already exists on the host
$childTriggers = $this->get(array('filter' => array('templateid' => $newTrigger['templateid']), 'output' => array('triggerid'), 'hostids' => $chdHost['hostid']));
// yes we have a child trigger, just update it
if ($childTrigger = reset($childTriggers)) {
$newTrigger['triggerid'] = $childTrigger['triggerid'];
} else {
// look for a trigger with the same description and expression
$childTriggers = $this->get(array('filter' => array('description' => $newTrigger['description'], 'flags' => null), 'output' => array('triggerid', 'expression'), 'nopermissions' => true, 'hostids' => $chdHost['hostid']));
foreach ($childTriggers as $childTrigger) {
$tmpExp = explode_exp($childTrigger['expression']);
if (strcmp($tmpExp, $newTrigger['expression']) == 0) {
// we have a trigger with the same description and expression as the parent
// convert it to a template trigger
$newTrigger['triggerid'] = $childTrigger['triggerid'];
break;
}
}
}
$this->checkIfExistsOnHost($newTrigger, $chdHost['hostid']);
if (isset($newTrigger['triggerid'])) {
$this->updateReal($newTrigger);
} else {
$oldTrigger = $this->get(array('triggerids' => $trigger['triggerid'], 'output' => API_OUTPUT_EXTEND, 'preservekeys' => true));
$oldTrigger = reset($oldTrigger);
unset($oldTrigger['triggerid']);
foreach ($oldTrigger as $key => $value) {
if (!isset($newTrigger[$key])) {
$newTrigger[$key] = $oldTrigger[$key];
}
}
$this->createReal($newTrigger);
$newTrigger = reset($newTrigger);
}
return $newTrigger;
}
function update_trigger($triggerid, $expression = NULL, $description = NULL, $type = NULL, $priority = NULL, $status = NULL, $comments = NULL, $url = NULL, $deps = array(), $templateid = 0)
{
$trigger = get_trigger_by_triggerid($triggerid);
$trig_hosts = get_hosts_by_triggerid($triggerid);
$trig_host = DBfetch($trig_hosts);
$event_to_unknown = false;
if (is_null($expression)) {
/* Restore expression */
$expression = explode_exp($trigger['expression'], 0);
} else {
if ($expression != explode_exp($trigger['expression'], 0)) {
$event_to_unknown = true;
}
}
if (!validate_expression($expression)) {
return false;
}
if (!validate_trigger_dependency($expression, $deps)) {
return false;
}
$exp_hosts = get_hosts_by_expression($expression);
if ($exp_hosts) {
$chd_hosts = get_hosts_by_templateid($trig_host['hostid']);
if (DBfetch($chd_hosts)) {
$exp_host = DBfetch($exp_hosts);
$db_chd_triggers = get_triggers_by_templateid($triggerid);
while ($db_chd_trigger = DBfetch($db_chd_triggers)) {
$chd_trig_hosts = get_hosts_by_triggerid($db_chd_trigger['triggerid']);
$chd_trig_host = DBfetch($chd_trig_hosts);
$newexpression = str_replace('{' . $exp_host['host'] . ':', '{' . $chd_trig_host['host'] . ':', $expression);
// recursion
update_trigger($db_chd_trigger['triggerid'], $newexpression, $description, $type, $priority, NULL, $comments, $url, replace_template_dependencies($deps, $chd_trig_host['hostid']), $triggerid);
}
}
}
$result = delete_function_by_triggerid($triggerid);
if (!$result) {
return $result;
}
$expression = implode_exp($expression, $triggerid);
/* errors can be ignored cose function must return NULL */
if ($event_to_unknown) {
add_event($triggerid, TRIGGER_VALUE_UNKNOWN);
}
reset_items_nextcheck($triggerid);
$sql = 'UPDATE triggers SET ';
if (!is_null($expression)) {
$sql .= ' expression=' . zbx_dbstr($expression) . ',';
}
if (!is_null($description)) {
$sql .= ' description=' . zbx_dbstr($description) . ',';
}
if (!is_null($type)) {
$sql .= ' type=' . $type . ',';
}
if (!is_null($priority)) {
$sql .= ' priority=' . $priority . ',';
}
if (!is_null($status)) {
$sql .= ' status=' . $status . ',';
}
if (!is_null($comments)) {
$sql .= ' comments=' . zbx_dbstr($comments) . ',';
}
if (!is_null($url)) {
$sql .= ' url=' . zbx_dbstr($url) . ',';
}
if (!is_null($templateid)) {
$sql .= ' templateid=' . $templateid . ',';
}
$sql .= ' value=2 WHERE triggerid=' . $triggerid;
$result = DBexecute($sql);
delete_dependencies_by_triggerid($triggerid);
foreach ($deps as $id => $triggerid_up) {
if (!($result2 = add_trigger_dependency($triggerid, $triggerid_up))) {
error(S_INCORRECT_DEPENDENCY . ' [' . expand_trigger_description($triggerid_up) . ']');
}
$result &= $result2;
}
if ($result) {
$trig_hosts = get_hosts_by_triggerid($triggerid);
$msg = 'Trigger "' . $trigger['description'] . '" updated';
$trig_host = DBfetch($trig_hosts);
if ($trig_host) {
$msg .= ' for host "' . $trig_host['host'] . '"';
}
info($msg);
}
if ($result) {
$trigger_new = get_trigger_by_triggerid($triggerid);
add_audit_ext(AUDIT_ACTION_UPDATE, AUDIT_RESOURCE_TRIGGER, $triggerid, $trigger['description'], 'triggers', $trigger, $trigger_new);
}
$result = $result ? $triggerid : $result;
return $result;
}
/**
* Synchronizes the templated trigger dependencies on the given hosts inherited from the given
* templates.
* Update dependencies, do it after all triggers that can be dependent were created/updated on
* all child hosts/templates. Starting from highest level template triggers select triggers from
* one level lower, then for each lower trigger look if it's parent has dependencies, if so
* find this dependency trigger child on dependent trigger host and add new dependency.
*
* @param array $data
*
* @return void
*/
public function syncTemplateDependencies(array $data)
{
$templateIds = zbx_toArray($data['templateids']);
$hostIds = zbx_toArray($data['hostids']);
$parentTriggers = $this->get(['output' => ['triggerid'], 'hostids' => $templateIds, 'preservekeys' => true, 'selectDependencies' => ['triggerid']]);
if ($parentTriggers) {
$childTriggers = $this->get(['output' => ['triggerid', 'templateid'], 'hostids' => $hostIds ? $hostIds : null, 'filter' => ['templateid' => array_keys($parentTriggers)], 'nopermissions' => true, 'preservekeys' => true, 'selectHosts' => ['hostid']]);
if ($childTriggers) {
$newDependencies = [];
foreach ($childTriggers as $childTrigger) {
$parentDependencies = $parentTriggers[$childTrigger['templateid']]['dependencies'];
if ($parentDependencies) {
$dependencies = [];
foreach ($parentDependencies as $depTrigger) {
$dependencies[] = $depTrigger['triggerid'];
}
$host = reset($childTrigger['hosts']);
$dependencies = replace_template_dependencies($dependencies, $host['hostid']);
foreach ($dependencies as $depTriggerId) {
$newDependencies[] = ['triggerid' => $childTrigger['triggerid'], 'dependsOnTriggerid' => $depTriggerId];
}
}
}
$this->deleteDependencies($childTriggers);
if ($newDependencies) {
$this->addDependencies($newDependencies);
}
}
}
}
function update_trigger($triggerid, $expression = NULL, $description = NULL, $type = NULL, $priority = NULL, $status = NULL, $comments = NULL, $url = NULL, $deps = array(), $templateid = 0)
{
$trigger = get_trigger_by_triggerid($triggerid);
$trig_hosts = get_hosts_by_triggerid($triggerid);
$trig_host = DBfetch($trig_hosts);
$event_to_unknown = false;
// Restore expression
if (is_null($expression)) {
$expression = explode_exp($trigger['expression'], 0);
$expr = new CTriggerExpression(array('expression' => $expression));
} else {
$expr = new CTriggerExpression(array('expression' => $expression));
$event_to_unknown = empty($expr->errors) && $expression != explode_exp($trigger['expression'], 0);
}
if (!empty($expr->errors)) {
foreach ($expr->errors as $error) {
error($error);
}
return false;
}
if (!is_null($deps) && !validate_trigger_dependency($expression, $deps)) {
error(S_WRONG_DEPENDENCY_ERROR);
return false;
}
if (is_null($description)) {
$description = $trigger['description'];
}
if (CTrigger::exists(array('description' => $description, 'expression' => $expression))) {
$host = reset($expr->data['hosts']);
$options = array('filter' => array('description' => $description, 'host' => $host), 'output' => API_OUTPUT_EXTEND, 'editable' => 1);
$triggers_exist = CTrigger::get($options);
$trigger_exist = false;
foreach ($triggers_exist as $tnum => $tr) {
$tmp_exp = explode_exp($tr['expression'], false);
if (strcmp($tmp_exp, $expression) == 0) {
$trigger_exist = $tr;
break;
}
}
if ($trigger_exist && $trigger_exist['triggerid'] != $trigger['triggerid']) {
error('Trigger with name "' . $trigger['description'] . '" and expression "' . $expression . '" already exists.');
return false;
} else {
if (!$trigger_exist) {
error('No Permissions');
return false;
}
}
}
$exp_hosts = $expr->data['hosts'];
if (!empty($exp_hosts)) {
$chd_hosts = get_hosts_by_templateid($trig_host['hostid']);
if (DBfetch($chd_hosts)) {
$expHostName = reset($exp_hosts);
$db_chd_triggers = get_triggers_by_templateid($triggerid);
while ($db_chd_trigger = DBfetch($db_chd_triggers)) {
$chd_trig_hosts = get_hosts_by_triggerid($db_chd_trigger['triggerid']);
$chd_trig_host = DBfetch($chd_trig_hosts);
$newexpression = str_replace('{' . $expHostName . ':', '{' . $chd_trig_host['host'] . ':', $expression);
// recursion
update_trigger($db_chd_trigger['triggerid'], $newexpression, $description, $type, $priority, $status, $comments, $url, is_null($deps) ? null : replace_template_dependencies($deps, $chd_trig_host['hostid']), $triggerid);
}
}
}
$result = delete_function_by_triggerid($triggerid);
if (!$result) {
return $result;
}
$expression = implode_exp($expression, $triggerid);
if (is_null($expression)) {
return false;
}
$update_values = array();
if (!is_null($expression)) {
$update_values['expression'] = $expression;
}
if (!is_null($description)) {
$update_values['description'] = $description;
}
if (!is_null($type)) {
$update_values['type'] = $type;
}
if (!is_null($priority)) {
$update_values['priority'] = $priority;
}
if (!is_null($status)) {
$update_values['status'] = $status;
}
if (!is_null($comments)) {
$update_values['comments'] = $comments;
}
if (!is_null($url)) {
$update_values['url'] = $url;
}
if (!is_null($templateid)) {
$update_values['templateid'] = $templateid;
}
if ($event_to_unknown || !is_null($status) && $status != TRIGGER_STATUS_ENABLED) {
if ($trigger['value'] != TRIGGER_VALUE_UNKNOWN) {
addEvent($triggerid, TRIGGER_VALUE_UNKNOWN);
$update_values['value'] = TRIGGER_VALUE_UNKNOWN;
$update_values['lastchange'] = time();
}
}
DB::update('triggers', array('values' => $update_values, 'where' => array('triggerid=' . $triggerid)));
if (!is_null($deps)) {
delete_dependencies_by_triggerid($triggerid);
foreach ($deps as $id => $triggerid_up) {
if (!($result2 = add_trigger_dependency($triggerid, $triggerid_up))) {
error(S_INCORRECT_DEPENDENCY . ' [' . expand_trigger_description($triggerid_up) . ']');
}
$result &= $result2;
}
}
if ($result) {
$trig_hosts = get_hosts_by_triggerid($triggerid);
$msg = S_TRIGGER . SPACE . '"' . $trigger['description'] . '"' . SPACE . S_UPDATED_SMALL;
$trig_host = DBfetch($trig_hosts);
if ($trig_host) {
$msg .= SPACE . S_FOR_HOST_SMALL . SPACE . '"' . $trig_host['host'] . '"';
}
info($msg);
}
if ($result) {
$trigger_new = get_trigger_by_triggerid($triggerid);
add_audit_ext(AUDIT_ACTION_UPDATE, AUDIT_RESOURCE_TRIGGER, $triggerid, $trig_host['host'] . ':' . $trigger['description'], 'triggers', $trigger, $trigger_new);
}
$result = $result ? $triggerid : $result;
return $result;
}
