/**
* Parses a trigger expression and returns an array of used hosts and items.
*
* @param string $expression
*
* @return array
*
* @throws Exception
*/
protected function parseTriggerExpression($expression)
{
$expressions = array();
$result = $this->triggerExpression->parse($expression);
if (!$result) {
throw new Exception($this->triggerExpression->error);
}
foreach ($result->getTokensByType(CTriggerExpressionParserResult::TOKEN_TYPE_FUNCTION_MACRO) as $token) {
$expressions[] = array('host' => $token['data']['host'], 'item' => $token['data']['item']);
}
return $expressions;
}
/**
* Break a trigger expression generated by the constructor.
*
* To be successfully parsed, each item function macro must be wrapped in additional parentheses, for example,
* (({item.item.regex(param)})=0)
*
* Most of this function was left unchanged to preserve the current behavior of the constructor.
* Feel free to rewrite and correct it if necessary.
*
* @param string $expression trigger expression
*
* @return array an array of expression parts, see self::getExpressionFromParts() for the structure of the part
* array
*/
public function getPartsFromExpression($expression)
{
// strip extra parentheses
$expression = preg_replace('/\\(\\(\\((.+?)\\)\\) and/i', '(($1) and', $expression);
$expression = preg_replace('/\\(\\(\\((.+?)\\)\\)$/i', '(($1)', $expression);
$parseResult = $this->triggerExpression->parse($expression);
$expressions = array();
$splitTokens = $this->splitTokensByFirstLevel($parseResult->getTokens());
foreach ($splitTokens as $key => $tokens) {
$expr = array();
// replace whole function macros with their functions
foreach ($tokens as $token) {
$value = $token['value'];
switch ($token['type']) {
case CTriggerExpressionParserResult::TOKEN_TYPE_FUNCTION_MACRO:
$value = $token['data']['function'];
break;
case CTriggerExpressionParserResult::TOKEN_TYPE_OPERATOR:
if ($token['value'] === 'and' || $token['value'] === 'or' || $token['value'] === 'not') {
$value = ' ' . $token['value'] . ' ';
}
break;
}
$expr[] = $value;
}
$expr = implode($expr);
// trim surrounding parentheses
$expr = preg_replace('/^\\((.*)\\)$/u', '$1', $expr);
// trim parentheses around item function macros
$value = preg_replace('/\\((.*)\\)(=|<>)0/U', '$1', $expr);
// trim surrounding parentheses
$value = preg_replace('/^\\((.*)\\)$/u', '$1', $value);
$expressions[$key]['value'] = trim($value);
$expressions[$key]['type'] = strpos($expr, '<>0', mb_strlen($expr) - 4) === false ? self::EXPRESSION_TYPE_NO_MATCH : self::EXPRESSION_TYPE_MATCH;
}
return $expressions;
}
function get_item_function_info($expr)
{
$value_type = array(ITEM_VALUE_TYPE_UINT64 => _('Numeric (integer 64bit)'), ITEM_VALUE_TYPE_FLOAT => _('Numeric (float)'), ITEM_VALUE_TYPE_STR => _('Character'), ITEM_VALUE_TYPE_LOG => _('Log'), ITEM_VALUE_TYPE_TEXT => _('Text'));
$type_of_value_type = array(ITEM_VALUE_TYPE_UINT64 => T_ZBX_INT, ITEM_VALUE_TYPE_FLOAT => T_ZBX_DBL, ITEM_VALUE_TYPE_STR => T_ZBX_STR, ITEM_VALUE_TYPE_LOG => T_ZBX_STR, ITEM_VALUE_TYPE_TEXT => T_ZBX_STR);
$function_info = array('band' => array('value_type' => _('Numeric (integer 64bit)'), 'type' => T_ZBX_INT, 'validation' => NOT_EMPTY), 'abschange' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'avg' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'change' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'count' => array('value_type' => _('Numeric (integer 64bit)'), 'type' => T_ZBX_INT, 'validation' => NOT_EMPTY), 'date' => array('value_type' => 'YYYYMMDD', 'type' => T_ZBX_INT, 'validation' => '{}>=19700101&&{}<=99991231'), 'dayofmonth' => array('value_type' => '1-31', 'type' => T_ZBX_INT, 'validation' => '{}>=1&&{}<=31'), 'dayofweek' => array('value_type' => '1-7', 'type' => T_ZBX_INT, 'validation' => IN('1,2,3,4,5,6,7')), 'delta' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'diff' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'fuzzytime' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'iregexp' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'last' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'logeventid' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'logseverity' => array('value_type' => _('Numeric (integer 64bit)'), 'type' => T_ZBX_INT, 'validation' => NOT_EMPTY), 'logsource' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'max' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'min' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'nodata' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'now' => array('value_type' => _('Numeric (integer 64bit)'), 'type' => T_ZBX_INT, 'validation' => NOT_EMPTY), 'prev' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'regexp' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'str' => array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1')), 'strlen' => array('value_type' => _('Numeric (integer 64bit)'), 'type' => T_ZBX_INT, 'validation' => NOT_EMPTY), 'sum' => array('value_type' => $value_type, 'type' => $type_of_value_type, 'validation' => NOT_EMPTY), 'time' => array('value_type' => 'HHMMSS', 'type' => T_ZBX_INT, 'validation' => 'zbx_strlen({})==6'));
$expressionData = new CTriggerExpression();
if ($expressionData->parse($expr)) {
if (isset($expressionData->macros[0])) {
$result = array('value_type' => _('0 or 1'), 'type' => T_ZBX_INT, 'validation' => IN('0,1'));
} elseif (isset($expressionData->usermacros[0]) || isset($expressionData->lldmacros[0])) {
$result = array('value_type' => $value_type[ITEM_VALUE_TYPE_FLOAT], 'type' => T_ZBX_STR, 'validation' => 'preg_match("/^' . ZBX_PREG_NUMBER . '$/u", {})');
} elseif (isset($expressionData->expressions[0])) {
$exprPart = reset($expressionData->expressions);
if (!isset($function_info[$exprPart['functionName']])) {
return EXPRESSION_FUNCTION_UNKNOWN;
}
$hostFound = API::Host()->get(array('filter' => array('host' => array($exprPart['host'])), 'templated_hosts' => true));
if (!$hostFound) {
return EXPRESSION_HOST_UNKNOWN;
}
$itemFound = API::Item()->get(array('output' => array('value_type'), 'hostids' => zbx_objectValues($hostFound, 'hostid'), 'filter' => array('key_' => array($exprPart['item'])), 'webitems' => true));
if (!$itemFound) {
$itemFound = API::ItemPrototype()->get(array('output' => array('value_type'), 'hostids' => zbx_objectValues($hostFound, 'hostid'), 'filter' => array('key_' => array($exprPart['item']))));
if (!$itemFound) {
return EXPRESSION_HOST_ITEM_UNKNOWN;
}
}
$itemFound = reset($itemFound);
$result = $function_info[$exprPart['functionName']];
if (is_array($result['value_type'])) {
$result['value_type'] = $result['value_type'][$itemFound['value_type']];
$result['type'] = $result['type'][$itemFound['value_type']];
if ($result['type'] == T_ZBX_INT || $result['type'] == T_ZBX_DBL) {
$result['type'] = T_ZBX_STR;
$result['validation'] = 'preg_match("/^' . ZBX_PREG_NUMBER . '$/u",{})';
}
}
} else {
return EXPRESSION_NOT_A_MACRO_ERROR;
}
}
return $result;
}
define('ZBX_PAGE_NO_MENU', 1);
define('COMBO_PATTERN', 'str_in_array({},array(');
define('COMBO_PATTERN_LENGTH', strlen(COMBO_PATTERN));
$definedErrorPhrases = [EXPRESSION_HOST_UNKNOWN => _('Unknown host, no such host present in system'), EXPRESSION_HOST_ITEM_UNKNOWN => _('Unknown host item, no such item in selected host'), EXPRESSION_NOT_A_MACRO_ERROR => _('Given expression is not a macro'), EXPRESSION_FUNCTION_UNKNOWN => _('Incorrect function is used')];
require_once dirname(__FILE__) . '/include/page_header.php';
// expression analyze
$expression = getRequest('expression', '');
define('NO_LINK_IN_TESTING', true);
list($outline, $eHTMLTree) = analyzeExpression($expression);
// test data (create table, create check fields)
$dataTable = (new CTable())->setAttribute('style', 'width: 100%;')->setHeader([_('Expression Variable Elements'), _('Result type'), _('Value')]);
$datas = [];
$fields = [];
$rplcts = [];
$allowedTesting = true;
$expressionData = new CTriggerExpression();
$result = $expressionData->parse($expression);
if ($result) {
$macrosData = [];
$supportedTokenTypes = [CTriggerExpressionParserResult::TOKEN_TYPE_FUNCTION_MACRO => 1, CTriggerExpressionParserResult::TOKEN_TYPE_MACRO => 1, CTriggerExpressionParserResult::TOKEN_TYPE_USER_MACRO => 1, CTriggerExpressionParserResult::TOKEN_TYPE_LLD_MACRO => 1];
foreach ($result->getTokens() as $token) {
if (!isset($supportedTokenTypes[$token['type']]) || isset($macrosData[$token['value']])) {
continue;
}
$row = (new CRow())->addItem($token['value']);
$fname = 'test_data_' . md5($token['value']);
$macrosData[$token['value']] = getRequest($fname, '');
$info = get_item_function_info($token['value']);
if (!is_array($info) && isset($definedErrorPhrases[$info])) {
$allowedTesting = false;
$row->addItem((new CCol($definedErrorPhrases[$info]))->addClass(ZBX_STYLE_RED)->setColspan(2));
/**
* Checks that no trigger with the same description and expression as $trigger exist on the given host.
* Assumes the given trigger is valid.
*
* @throws APIException if at least one trigger exists
*
* @param array $trigger a trigger with an exploded expression
* @param null $hostid
*
* @return void
*/
protected function checkIfExistsOnHost(array $trigger, $hostId = null)
{
// skip the check if the description and expression haven't been changed
if (!isset($trigger['description']) && !isset($trigger['expression'])) {
return;
}
// make sure we have all the required data
if (!isset($trigger['description']) || !isset($trigger['expression'])) {
$explodeExpression = !isset($trigger['expression']);
$trigger = $this->extendObject($this->tableName(), $trigger, array('description', 'expression'));
if ($explodeExpression) {
$trigger['expression'] = explode_exp($trigger['expression']);
}
}
$filter = array('description' => $trigger['description']);
if ($hostId) {
$filter['hostid'] = $hostId;
} else {
$expressionData = new CTriggerExpression($trigger['expression']);
$expressionData->parse($trigger['expression']);
$expressionHosts = $expressionData->getHosts();
$filter['host'] = reset($expressionHosts);
}
$triggers = $this->get(array('filter' => $filter, 'output' => array('expression', 'triggerid'), 'nopermissions' => true));
foreach ($triggers as $dbTrigger) {
$tmpExp = explode_exp($dbTrigger['expression']);
// check if the expressions are also equal and that this is a different trigger
$differentTrigger = !isset($trigger['triggerid']) || !idcmp($trigger['triggerid'], $dbTrigger['triggerid']);
if (strcmp($tmpExp, $trigger['expression']) == 0 && $differentTrigger) {
$options = array('output' => array('name'), 'templated_hosts' => true, 'nopermissions' => true, 'limit' => 1);
if (isset($filter['host'])) {
$options['filter'] = array('host' => $filter['host']);
} else {
$options['hostids'] = $hostId;
}
$host = API::Host()->get($options);
$host = reset($host);
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Trigger "%1$s" already exists on "%2$s".', $trigger['description'], $host['name']));
}
}
}
/**
* Returns true if the given expression contains templates.
*
* @param CTriggerExpression $exp
*
* @return bool
*/
protected function expressionHasTemplates(CTriggerExpression $expressionData)
{
$hosts = API::Host()->get(['output' => ['status'], 'filter' => ['name' => $expressionData->getHosts()], 'templated_hosts' => true]);
foreach ($hosts as $host) {
if ($host['status'] == HOST_STATUS_TEMPLATE) {
return true;
}
}
return false;
}
protected function updateReal(array $triggers)
{
$triggers = zbx_toArray($triggers);
$dbTriggers = $this->get(array('triggerids' => zbx_objectValues($triggers, 'triggerid'), 'output' => API_OUTPUT_EXTEND, 'selectHosts' => array('name'), 'preservekeys' => true, 'nopermissions' => true));
$descriptionChanged = $expressionChanged = false;
foreach ($triggers as &$trigger) {
$dbTrigger = $dbTriggers[$trigger['triggerid']];
$hosts = zbx_objectValues($dbTrigger['hosts'], 'name');
if (isset($trigger['description']) && strcmp($dbTrigger['description'], $trigger['description']) != 0) {
$descriptionChanged = true;
}
$expressionFull = explode_exp($dbTrigger['expression']);
if (isset($trigger['expression']) && strcmp($expressionFull, $trigger['expression']) != 0) {
$expressionChanged = true;
$expressionFull = $trigger['expression'];
}
if ($descriptionChanged || $expressionChanged) {
$expressionData = new CTriggerExpression();
if (!$expressionData->parse($expressionFull)) {
self::exception(ZBX_API_ERROR_PARAMETERS, $expressionData->error);
}
if (!isset($expressionData->expressions[0])) {
self::exception(ZBX_API_ERROR_PARAMETERS, _('Trigger expression must contain at least one host:key reference.'));
}
}
if ($expressionChanged) {
DB::delete('functions', array('triggerid' => $trigger['triggerid']));
try {
$trigger['expression'] = implode_exp($expressionFull, $trigger['triggerid'], $hosts);
} catch (Exception $e) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Cannot implode expression "%s".', $expressionFull) . ' ' . $e->getMessage());
}
}
$triggerUpdate = $trigger;
if (!$descriptionChanged) {
unset($triggerUpdate['description']);
}
if (!$expressionChanged) {
unset($triggerUpdate['expression']);
}
// skip updating read only values
unset($triggerUpdate['state'], $triggerUpdate['value'], $triggerUpdate['lastchange'], $triggerUpdate['error']);
DB::update('triggers', array('values' => $triggerUpdate, 'where' => array('triggerid' => $trigger['triggerid'])));
$description = isset($trigger['description']) ? $trigger['description'] : $dbTrigger['description'];
info(_s('Updated: Trigger prototype "%1$s" on "%2$s".', $description, implode(', ', $hosts)));
}
unset($trigger);
}
$param1_sec_count = array(array('C' => _('Last of') . ' (T)', 'T' => T_ZBX_INT, 'M' => $metrics), array('C' => _('Time shift') . ' ', 'T' => T_ZBX_INT));
$param1_sec = array(array('C' => _('Last of') . ' (T)', 'T' => T_ZBX_INT));
$param1_str = array(array('C' => 'T', 'T' => T_ZBX_STR));
$param2_sec_count = array(array('C' => 'V', 'T' => T_ZBX_STR), array('C' => _('Last of') . ' (T)', 'T' => T_ZBX_INT, 'M' => $metrics));
$param3_sec_val = array(array('C' => _('Last of') . ' (T)', 'T' => T_ZBX_INT, 'M' => $metrics), array('C' => 'V', 'T' => T_ZBX_STR), array('C' => 'O', 'T' => T_ZBX_STR), array('C' => _('Time shift') . ' ', 'T' => T_ZBX_INT));
$allowed_types_any = array(ITEM_VALUE_TYPE_FLOAT => 1, ITEM_VALUE_TYPE_STR => 1, ITEM_VALUE_TYPE_LOG => 1, ITEM_VALUE_TYPE_UINT64 => 1, ITEM_VALUE_TYPE_TEXT => 1);
$allowed_types_numeric = array(ITEM_VALUE_TYPE_FLOAT => 1, ITEM_VALUE_TYPE_UINT64 => 1);
$allowed_types_str = array(ITEM_VALUE_TYPE_STR => 1, ITEM_VALUE_TYPE_LOG => 1, ITEM_VALUE_TYPE_TEXT => 1);
$allowed_types_log = array(ITEM_VALUE_TYPE_LOG => 1);
$functions = array('abschange[<]' => array('description' => _('Absolute difference between last and previous value is < N'), 'allowed_types' => $allowed_types_any), 'abschange[>]' => array('description' => _('Absolute difference between last and previous value is > N'), 'allowed_types' => $allowed_types_any), 'abschange[=]' => array('description' => _('Absolute difference between last and previous value is = N'), 'allowed_types' => $allowed_types_any), 'abschange[#]' => array('description' => _('Absolute difference between last and previous value is NOT N'), 'allowed_types' => $allowed_types_any), 'avg[<]' => array('description' => _('Average value of a period T is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'avg[>]' => array('description' => _('Average value of a period T is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'avg[=]' => array('description' => _('Average value of a period T is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'avg[#]' => array('description' => _('Average value of a period T is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'delta[<]' => array('description' => _('Difference between MAX and MIN value of a period T is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'delta[>]' => array('description' => _('Difference between MAX and MIN value of a period T is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'delta[=]' => array('description' => _('Difference between MAX and MIN value of a period T is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'delta[#]' => array('description' => _('Difference between MAX and MIN value of a period T is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'change[<]' => array('description' => _('Difference between last and previous value is < N'), 'allowed_types' => $allowed_types_any), 'change[>]' => array('description' => _('Difference between last and previous value is > N'), 'allowed_types' => $allowed_types_any), 'change[=]' => array('description' => _('Difference between last and previous value is = N'), 'allowed_types' => $allowed_types_any), 'change[#]' => array('description' => _('Difference between last and previous value is NOT N'), 'allowed_types' => $allowed_types_any), 'count[<]' => array('description' => _('Number of successfully retrieved values V (which fulfill operator O) for period T is < N'), 'params' => $param3_sec_val, 'allowed_types' => $allowed_types_any), 'count[>]' => array('description' => _('Number of successfully retrieved values V (which fulfill operator O) for period T is > N'), 'params' => $param3_sec_val, 'allowed_types' => $allowed_types_any), 'count[=]' => array('description' => _('Number of successfully retrieved values V (which fulfill operator O) for period T is = N'), 'params' => $param3_sec_val, 'allowed_types' => $allowed_types_any), 'count[#]' => array('description' => _('Number of successfully retrieved values V (which fulfill operator O) for period T is NOT N'), 'params' => $param3_sec_val, 'allowed_types' => $allowed_types_any), 'diff[=]' => array('description' => _('Difference between last and preceding values, then N = 1, 0 - otherwise'), 'allowed_types' => $allowed_types_any), 'diff[#]' => array('description' => _('Difference between last and preceding values, then N NOT 1, 0 - otherwise'), 'allowed_types' => $allowed_types_any), 'last[<]' => array('description' => _('Last (most recent) T value is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_any), 'last[>]' => array('description' => _('Last (most recent) T value is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_any), 'last[=]' => array('description' => _('Last (most recent) T value is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_any), 'last[#]' => array('description' => _('Last (most recent) T value is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_any), 'max[<]' => array('description' => _('Maximum value for period T is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'max[>]' => array('description' => _('Maximum value for period T is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'max[=]' => array('description' => _('Maximum value for period T is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'max[#]' => array('description' => _('Maximum value for period T is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'min[<]' => array('description' => _('Minimum value for period T is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'min[>]' => array('description' => _('Minimum value for period T is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'min[=]' => array('description' => _('Minimum value for period T is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'min[#]' => array('description' => _('Minimum value for period T is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'prev[<]' => array('description' => _('Previous value is < N'), 'allowed_types' => $allowed_types_any), 'prev[>]' => array('description' => _('Previous value is > N'), 'allowed_types' => $allowed_types_any), 'prev[=]' => array('description' => _('Previous value is = N'), 'allowed_types' => $allowed_types_any), 'prev[#]' => array('description' => _('Previous value is NOT N'), 'allowed_types' => $allowed_types_any), 'str[=]' => array('description' => _('Find string V in last (most recent) value. N = 1 - if found, 0 - otherwise'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'str[#]' => array('description' => _('Find string V in last (most recent) value. N NOT 1 - if found, 0 - otherwise'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'strlen[<]' => array('description' => _('Length of last (most recent) T value in characters is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_str), 'strlen[>]' => array('description' => _('Length of last (most recent) T value in characters is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_str), 'strlen[=]' => array('description' => _('Length of last (most recent) T value in characters is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_str), 'strlen[#]' => array('description' => _('Length of last (most recent) T value in characters is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_str), 'sum[<]' => array('description' => _('Sum of values of a period T is < N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'sum[>]' => array('description' => _('Sum of values of a period T is > N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'sum[=]' => array('description' => _('Sum of values of a period T is = N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'sum[#]' => array('description' => _('Sum of values of a period T is NOT N'), 'params' => $param1_sec_count, 'allowed_types' => $allowed_types_numeric), 'date[<]' => array('description' => _('Current date is < N'), 'allowed_types' => $allowed_types_any), 'date[>]' => array('description' => _('Current date is > N'), 'allowed_types' => $allowed_types_any), 'date[=]' => array('description' => _('Current date is = N'), 'allowed_types' => $allowed_types_any), 'date[#]' => array('description' => _('Current date is NOT N'), 'allowed_types' => $allowed_types_any), 'dayofweek[<]' => array('description' => _('Day of week is < N'), 'allowed_types' => $allowed_types_any), 'dayofweek[>]' => array('description' => _('Day of week is > N'), 'allowed_types' => $allowed_types_any), 'dayofweek[=]' => array('description' => _('Day of week is = N'), 'allowed_types' => $allowed_types_any), 'dayofweek[#]' => array('description' => _('Day of week is NOT N'), 'allowed_types' => $allowed_types_any), 'dayofmonth[<]' => array('description' => _('Day of month is < N'), 'allowed_types' => $allowed_types_any), 'dayofmonth[>]' => array('description' => _('Day of month is > N'), 'allowed_types' => $allowed_types_any), 'dayofmonth[=]' => array('description' => _('Day of month is = N'), 'allowed_types' => $allowed_types_any), 'dayofmonth[#]' => array('description' => _('Day of month is NOT N'), 'allowed_types' => $allowed_types_any), 'fuzzytime[=]' => array('description' => _('Timestamp not different from Zabbix server time for more than T seconds, then N = 1, 0 - otherwise'), 'params' => $param1_sec, 'allowed_types' => $allowed_types_any), 'fuzzytime[#]' => array('description' => _('Timestamp not different from Zabbix server time for more than T seconds, then N NOT 1, 0 - otherwise'), 'params' => $param1_sec, 'allowed_types' => $allowed_types_any), 'regexp[=]' => array('description' => _('Regular expression V matching last value in period T, then N = 1, 0 - otherwise'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'regexp[#]' => array('description' => _('Regular expression V matching last value in period T, then N NOT 1, 0 - otherwise'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'iregexp[=]' => array('description' => _('Regular expression V matching last value in period T, then N = 1, 0 - otherwise (non case-sensitive)'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'iregexp[#]' => array('description' => _('Regular expression V matching last value in period T, then N NOT 1, 0 - otherwise (non case-sensitive)'), 'params' => $param2_sec_count, 'allowed_types' => $allowed_types_any), 'logeventid[=]' => array('description' => _('Event ID of last log entry matching regular expression T, then N = 1, 0 - otherwise'), 'params' => $param1_str, 'allowed_types' => $allowed_types_log), 'logeventid[#]' => array('description' => _('Event ID of last log entry matching regular expression T, then N NOT 1, 0 - otherwise'), 'params' => $param1_str, 'allowed_types' => $allowed_types_log), 'logseverity[<]' => array('description' => _('Log severity of the last log entry is < N'), 'allowed_types' => $allowed_types_log), 'logseverity[>]' => array('description' => _('Log severity of the last log entry is > N'), 'allowed_types' => $allowed_types_log), 'logseverity[=]' => array('description' => _('Log severity of the last log entry is = N'), 'allowed_types' => $allowed_types_log), 'logseverity[#]' => array('description' => _('Log severity of the last log entry is NOT N'), 'allowed_types' => $allowed_types_log), 'logsource[=]' => array('description' => _('Log source of the last log entry matching parameter T, then N = 1, 0 - otherwise'), 'params' => $param1_str, 'allowed_types' => $allowed_types_log), 'logsource[#]' => array('description' => _('Log source of the last log entry matching parameter T, then N NOT 1, 0 - otherwise'), 'params' => $param1_str, 'allowed_types' => $allowed_types_log), 'now[<]' => array('description' => _('Number of seconds since the Epoch is < N'), 'allowed_types' => $allowed_types_any), 'now[>]' => array('description' => _('Number of seconds since the Epoch is > N'), 'allowed_types' => $allowed_types_any), 'now[=]' => array('description' => _('Number of seconds since the Epoch is = N'), 'allowed_types' => $allowed_types_any), 'now[#]' => array('description' => _('Number of seconds since the Epoch is NOT N'), 'allowed_types' => $allowed_types_any), 'time[<]' => array('description' => _('Current time is < N'), 'allowed_types' => $allowed_types_any), 'time[>]' => array('description' => _('Current time is > N'), 'allowed_types' => $allowed_types_any), 'time[=]' => array('description' => _('Current time is = N'), 'allowed_types' => $allowed_types_any), 'time[#]' => array('description' => _('Current time is NOT N'), 'allowed_types' => $allowed_types_any), 'nodata[=]' => array('description' => _('No data received during period of time T, then N = 1, 0 - otherwise'), 'params' => $param1_sec, 'allowed_types' => $allowed_types_any), 'nodata[#]' => array('description' => _('No data received during period of time T, then N NOT 1, 0 - otherwise'), 'params' => $param1_sec, 'allowed_types' => $allowed_types_any));
// VAR TYPE OPTIONAL FLAGS VALIDATION EXCEPTION
$fields = array('dstfrm' => array(T_ZBX_STR, O_MAND, P_SYS, NOT_EMPTY, null), 'dstfld1' => array(T_ZBX_STR, O_MAND, P_SYS, NOT_EMPTY, null), 'expression' => array(T_ZBX_STR, O_OPT, null, null, null), 'itemid' => array(T_ZBX_INT, O_OPT, null, null, 'isset({insert})'), 'parent_discoveryid' => array(T_ZBX_INT, O_OPT, null, null, null), 'expr_type' => array(T_ZBX_STR, O_OPT, null, NOT_EMPTY, 'isset({insert})'), 'param' => array(T_ZBX_STR, O_OPT, null, 0, 'isset({insert})'), 'paramtype' => array(T_ZBX_INT, O_OPT, null, IN(PARAM_TYPE_SECONDS . ',' . PARAM_TYPE_COUNTS), 'isset({insert})'), 'value' => array(T_ZBX_STR, O_OPT, null, NOT_EMPTY, 'isset({insert})'), 'insert' => array(T_ZBX_STR, O_OPT, P_SYS | P_ACT, null, null), 'cancel' => array(T_ZBX_STR, O_OPT, P_SYS, null, null));
check_fields($fields);
if (isset($_REQUEST['expression']) && $_REQUEST['dstfld1'] == 'expr_temp') {
$_REQUEST['expression'] = utf8RawUrlDecode($_REQUEST['expression']);
$expressionData = new CTriggerExpression();
if ($expressionData->parse($_REQUEST['expression']) && count($expressionData->expressions) == 1) {
$exprPart = reset($expressionData->expressions);
preg_match('/\\}([=><#]{1})([0-9]+)$/', $_REQUEST['expression'], $exprSymbols);
if (isset($exprSymbols[1])) {
$_REQUEST['expr_type'] = $exprPart['functionName'] . '[' . $exprSymbols[1] . ']';
}
$_REQUEST['description'] = $exprPart['host'] . ':' . $exprPart['item'];
$_REQUEST['param'] = $exprPart['functionParamList'];
$param_no = in_array($exprPart['functionName'], array('regexp', 'iregexp', 'str')) ? 1 : 0;
if (isset($_REQUEST['param'][$param_no][0]) && $_REQUEST['param'][$param_no][0] == '#') {
$_REQUEST['paramtype'] = PARAM_TYPE_COUNTS;
$_REQUEST['param'][$param_no] = substr($_REQUEST['param'][$param_no], 1);
} else {
$_REQUEST['paramtype'] = PARAM_TYPE_SECONDS;
}
/**
* Expand functional macros in given map label.
*
* @param string $label label to expand
* @param array $replaceHosts list of hosts in order which they appear in trigger expression if trigger label is given,
* or single host when host label is given
*
* @return string
*/
public function resolveMapLabelMacros($label, $replaceHosts = null)
{
$functionsPattern = '(last|max|min|avg)\\(([0-9]+[' . ZBX_TIME_SUFFIXES . ']?)?\\)';
// Find functional macro pattern.
$pattern = $replaceHosts === null ? '/{' . ZBX_PREG_HOST_FORMAT . ':.+\\.' . $functionsPattern . '}/Uu' : '/{(' . ZBX_PREG_HOST_FORMAT . '|{HOSTNAME[0-9]?}|{HOST\\.HOST[0-9]?}):.+\\.' . $functionsPattern . '}/Uu';
preg_match_all($pattern, $label, $matches);
// For each functional macro.
foreach ($matches[0] as $expr) {
$macro = $expr;
if ($replaceHosts !== null) {
// Search for macros with all possible indices.
foreach ($replaceHosts as $i => $host) {
$macroTmp = $macro;
// Replace only macro in first position.
$macro = preg_replace('/{({HOSTNAME' . $i . '}|{HOST\\.HOST' . $i . '}):(.*)}/U', '{' . $host['host'] . ':$2}', $macro);
// Only one simple macro possible inside functional macro.
if ($macro !== $macroTmp) {
break;
}
}
}
// Try to create valid expression.
$expressionData = new CTriggerExpression();
if (!$expressionData->parse($macro) || !isset($expressionData->expressions[0])) {
continue;
}
// Look in DB for corresponding item.
$itemHost = $expressionData->expressions[0]['host'];
$key = $expressionData->expressions[0]['item'];
$function = $expressionData->expressions[0]['functionName'];
$item = API::Item()->get(['output' => ['itemid', 'value_type', 'units', 'valuemapid', 'lastvalue', 'lastclock'], 'webitems' => true, 'filter' => ['host' => $itemHost, 'key_' => $key]]);
$item = reset($item);
// If no corresponding item found with functional macro key and host.
if (!$item) {
$label = str_replace($expr, UNRESOLVED_MACRO_STRING, $label);
continue;
}
// Do function type (last, min, max, avg) related actions.
if ($function === 'last') {
$value = $item['lastclock'] ? formatHistoryValue($item['lastvalue'], $item) : UNRESOLVED_MACRO_STRING;
} else {
$value = getItemFunctionalValue($item, $function, $expressionData->expressions[0]['functionParamList'][0]);
}
if (isset($value)) {
$label = str_replace($expr, $value, $label);
}
}
return $label;
}
/**
* Expand functional macros in given map label.
*
* @param string $label label to expand
* @param array $replaceHosts list of hosts in order which they appear in trigger expression if trigger label is given,
* or single host when host label is given
*
* @return string expanded label
*/
function resolveMapLabelMacros($label, $replaceHosts = null)
{
// find functional macro pattern
$pattern = null === $replaceHosts ? '/{' . ZBX_PREG_HOST_FORMAT . ":.+\\.(last|max|min|avg)\\([0-9]+[smhdwKMGT]?\\)}/Uu" : '/{(' . ZBX_PREG_HOST_FORMAT . "|{HOSTNAME[0-9]?}|{HOST\\.HOST[0-9]?}):.+\\.(last|max|min|avg)\\([0-9]+[smhdwKMGT]?\\)}/Uu";
preg_match_all($pattern, $label, $matches);
// for each functional macro
foreach ($matches[0] as $expr) {
$macro = $expr;
if ($replaceHosts !== null) {
// search for macros with all possible indecies
foreach ($replaceHosts as $i => $host) {
$macroTmp = $macro;
// repalce only macro in first position
$macro = preg_replace('/{({HOSTNAME' . $i . '}|{HOST\\.HOST' . $i . '}):(.*)}/U', '{' . $host['host'] . ':$2}', $macro);
// only one simple macro possible inside functional macro
if ($macro != $macroTmp) {
break;
}
}
}
// try to create valid expression
$expressionData = new CTriggerExpression();
if (!$expressionData->parse($macro) || !isset($expressionData->expressions[0])) {
continue;
}
// look in DB for coressponding item
$itemHost = $expressionData->expressions[0]['host'];
$key = $expressionData->expressions[0]['item'];
$function = $expressionData->expressions[0]['functionName'];
$parameter = convertFunctionValue($expressionData->expressions[0]['functionParamList'][0]);
$item = API::Item()->get(array('webitems' => true, 'filter' => array('host' => $itemHost, 'key_' => $key), 'output' => array('lastclock', 'value_type', 'lastvalue', 'units', 'valuemapid')));
$item = reset($item);
// if no corresponding item found with functional macro key and host
if (!$item) {
$label = str_replace($expr, '???', $label);
continue;
}
// do function type (last, min, max, avg) related actions
if (0 == strcmp($function, 'last')) {
$value = $item['lastclock'] ? formatHistoryValue($item['lastvalue'], $item) : UNRESOLVED_MACRO_STRING;
} elseif (0 == strcmp($function, 'min') || 0 == strcmp($function, 'max') || 0 == strcmp($function, 'avg')) {
$value = getItemFunctionalValue($item, $function, $parameter);
}
if (isset($value)) {
$label = str_replace($expr, $value, $label);
}
}
return $label;
}
/**
* Checks if trigger prototype is in valid state. Checks trigger expression.
*
* @param array $triggerPrototype
*
* @return void
*/
protected function validateTriggerPrototypeExpression(array $triggerPrototype)
{
$triggerExpression = new CTriggerExpression();
if (!$triggerExpression->parse($triggerPrototype['expression'])) {
self::exception(ZBX_API_ERROR_PARAMETERS, $triggerExpression->error);
}
$expressionHostnames = $triggerExpression->getHosts();
$this->checkTemplatesAndHostsTogether($expressionHostnames);
$triggerExpressionItems = getExpressionItems($triggerExpression);
$this->checkDiscoveryRuleCount($triggerPrototype, $triggerExpressionItems);
}
$ctb = new CTextBox('expression', '', 80);
$ctb->setAttribute('id', 'logexpr');
$cb = new CButton('add_exp', _('Add'), 'javascript: add_logexpr();');
$cbAdd = new CButton('add_key_and', _('AND'), 'javascript: add_keyword_and();');
$cbOr = new CButton('add_key_or', _('OR'), 'javascript: add_keyword_or();');
$cbIregexp = new CCheckBox('iregexp', 'no', null, 1);
$frmTRLog->addRow(_('Expression'), array($ctb, BR(), $cbIregexp, 'iregexp', SPACE, $cbAdd, SPACE, $cbOr, SPACE, $exp_select, SPACE, $cb));
$keyTable = new CTableInfo(null);
$keyTable->setAttribute('id', 'key_list');
$keyTable->setHeader(array(_('Keyword'), _('Type'), _('Action')));
$table = new CTableInfo(null);
$table->setAttribute('id', 'exp_list');
$table->setHeader(array(_('Expression'), _('Type'), _('Position'), _('Action')));
$maxid = 0;
$bExprResult = true;
$expressionData = new CTriggerExpression();
if (isset($_REQUEST['triggerid']) && !isset($_REQUEST['save_trigger']) && !$expressionData->parse(empty($expressions) ? '' : construct_expression($itemid, $expressions)) && !isset($_REQUEST['form_refresh'])) {
info($expressionData->error);
unset($expressions);
$expressions[0]['value'] = $expr_incase;
$expressions[0]['type'] = 0;
$expressions[0]['view'] = $expr_incase;
$bExprResult = false;
}
foreach ($expressions as $id => $expr) {
$imgup = new CImg('images/general/arrow_up.png', 'up', 12, 14);
$imgup->setAttribute('onclick', 'javascript: element_up("logtr' . $id . '");');
$imgup->setAttribute('onmouseover', 'javascript: this.style.cursor = "pointer";');
$imgdn = new CImg('images/general/arrow_down.png', 'down', 12, 14);
$imgdn->setAttribute('onclick', 'javascript: element_down("logtr' . $id . '");');
$imgdn->setAttribute('onmouseover', 'javascript: this.style.cursor = "pointer";');
/**
* Substitute macros in the expression with the given values and evaluate it's result.
*
* @param string $expression a trigger expression
* @param array $replaceFunctionMacros an array of macro - value pairs
*
* @return bool the calculated value of the expression
*/
function evalExpressionData($expression, $replaceFunctionMacros)
{
// replace function macros with their values
$expression = str_replace(array_keys($replaceFunctionMacros), array_values($replaceFunctionMacros), $expression);
$parser = new CTriggerExpression();
$parseResult = $parser->parse($expression);
// The $replaceFunctionMacros array may contain string values which after substitution
// will result in an invalid expression. In such cases we should just return false.
if (!$parseResult) {
return false;
}
// turn the expression into valid PHP code
$evStr = '';
$replaceOperators = array('not' => '!', '=' => '==');
foreach ($parseResult->getTokens() as $token) {
$value = $token['value'];
switch ($token['type']) {
case CTriggerExpressionParserResult::TOKEN_TYPE_OPERATOR:
// replace specific operators with their PHP analogues
if (isset($replaceOperators[$token['value']])) {
$value = $replaceOperators[$token['value']];
}
break;
case CTriggerExpressionParserResult::TOKEN_TYPE_NUMBER:
// convert numeric values with suffixes
if ($token['data']['suffix'] !== null) {
$value = convert($value);
}
$value = '((float) "' . $value . '")';
break;
}
$evStr .= ' ' . $value;
}
// execute expression
eval('$result = (' . trim($evStr) . ');');
return $result;
}
require_once dirname(__FILE__) . '/include/page_header.php';
//----------------------------------------------------------------------
// expression analyze
$expression = get_request('expression', '');
define('NO_LINK_IN_TESTING', true);
list($outline, $eHTMLTree) = analyzeExpression($expression);
// test data (create table, create check fields)
$data_table = new CTable(null, 'tableinfo');
$data_table->setAttribute('id', 'data_list');
$data_table->setHeader(array(_('Expression Variable Elements'), _('Result type'), _('Value')));
$octet = false;
$datas = array();
$fields = array();
$rplcts = array();
$allowedTesting = true;
$expressionData = new CTriggerExpression();
if ($expressionData->parse($expression)) {
$macrosData = array();
$expressions = array_merge($expressionData->expressions, $expressionData->macros, $expressionData->usermacros);
foreach ($expressions as $exprPart) {
if (isset($macrosData[$exprPart['expression']])) {
continue;
}
$fname = 'test_data_' . md5($exprPart['expression']);
$macrosData[$exprPart['expression']] = get_request($fname, '');
$info = get_item_function_info($exprPart['expression']);
if (!is_array($info) && isset($definedErrorPhrases[$info])) {
$allowedTesting = false;
$control = new CTextBox($fname, $macrosData[$exprPart['expression']], 30);
$control->setAttribute('disabled', 'disabled');
} else {
/**
* Check if trigger prototype has a correct trigger expression and has at least one item prototype and belongs to
* one discovery rule, does not belong to a host and a template simultaneously and has permissions to all hosts and
* templates in the expression.
*
* @param array $triggerPrototype
* @param string $triggerPrototype['description']
* @param string $triggerPrototype['expression']
*
* @throws APIException
*
* @return void
*/
protected function checkExpression(array $triggerPrototype)
{
$triggerExpression = new CTriggerExpression();
if (!$triggerExpression->parse($triggerPrototype['expression'])) {
self::exception(ZBX_API_ERROR_PARAMETERS, $triggerExpression->error);
}
$lld_rules = [];
if ($triggerExpression->expressions) {
$expressions = [];
$hosts = [];
$has_host = false;
$has_template = false;
foreach ($triggerExpression->expressions as $expression) {
if (!array_key_exists($expression['host'], $expressions)) {
$expressions[$expression['host']] = ['hostid' => null, 'items' => []];
}
$expressions[$expression['host']]['items'][$expression['item']] = true;
$hosts[$expression['host']] = true;
}
$db_hosts = API::Host()->get(['output' => ['hostid', 'host'], 'filter' => ['host' => array_keys($hosts)]]);
foreach ($db_hosts as $db_host) {
$expressions[$db_host['host']]['hostid'] = $db_host['hostid'];
$has_host = true;
unset($hosts[$db_host['host']]);
}
if ($hosts) {
$db_templates = API::Template()->get(['output' => ['templateid', 'host'], 'filter' => ['host' => array_keys($hosts)]]);
foreach ($db_templates as $db_template) {
$expressions[$db_template['host']]['hostid'] = $db_template['templateid'];
$has_template = true;
}
}
if ($has_host && $has_template) {
self::exception(ZBX_API_ERROR_PARAMETERS, _('Incorrect trigger prototype expression.' . ' Trigger prototype expression elements should not belong to a template and a host simultaneously.'));
}
foreach ($expressions as $host => $expression) {
if ($expression['hostid'] === null) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Incorrect trigger prototype expression.' . ' Host "%1$s" does not exist or you have no access to this host.', $host));
}
$db_item_prototypes = API::ItemPrototype()->get(['output' => [], 'selectDiscoveryRule' => ['itemid'], 'hostids' => [$expression['hostid']], 'filter' => ['key_' => array_keys($expression['items'])], 'nopermissions' => true]);
foreach ($db_item_prototypes as $db_item_prototype) {
$lld_rules[$db_item_prototype['discoveryRule']['itemid']] = true;
}
}
if (count($lld_rules) > 1) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Trigger prototype "%1$s" contains item prototypes from multiple discovery rules.', $triggerPrototype['description']));
}
}
if (!$lld_rules) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Trigger prototype "%1$s" must contain at least one item prototype.', $triggerPrototype['description']));
}
}
if ($data['description']) {
if ($data['paramtype'] == PARAM_TYPE_COUNTS) {
$paramNumber = in_array($function, ['regexp', 'iregexp', 'str']) ? 1 : 0;
$data['params'][$paramNumber] = '#' . $data['params'][$paramNumber];
}
if ($data['paramtype'] == PARAM_TYPE_TIME && in_array($function, ['last', 'band', 'strlen'])) {
$data['params'][0] = '';
}
// quote function param
$quotedParams = [];
foreach ($data['params'] as $param) {
$quotedParams[] = quoteFunctionParam($param);
}
$data['expression'] = sprintf('{%s:%s.%s(%s)}%s%s', $itemHostData['host'], $data['item_key'], $function, rtrim(implode(',', $quotedParams), ','), $operator, $data['value']);
// validate trigger expression
$triggerExpression = new CTriggerExpression();
if ($triggerExpression->parse($data['expression'])) {
$expressionData = reset($triggerExpression->expressions);
// validate trigger function
$triggerFunctionValidator = new CFunctionValidator();
$isValid = $triggerFunctionValidator->validate(['function' => $expressionData['function'], 'functionName' => $expressionData['functionName'], 'functionParamList' => $expressionData['functionParamList'], 'valueType' => $data['itemValueType']]);
if (!$isValid) {
unset($data['insert']);
throw new Exception($triggerFunctionValidator->getError());
}
} else {
unset($data['insert']);
throw new Exception($triggerExpression->error);
}
// quote function param
if (isset($data['insert'])) {
/**
* Expand functional macros in given map label.
*
* @param string $label label to expand
* @param array $replaceHosts list of hosts in order which they appear in trigger expression if trigger label is given,
* or single host when host label is given
*
* @return string expanded label
*/
function resolveMapLabelMacros($label, $replaceHosts = null)
{
// find functional macro pattern
$pattern = null === $replaceHosts ? '/{' . ZBX_PREG_HOST_FORMAT . ":.+\\.(last|max|min|avg)\\([0-9]+[smhdwKMGT]?\\)}/Uu" : '/{(' . ZBX_PREG_HOST_FORMAT . "|{HOSTNAME[0-9]?}|{HOST.HOST[0-9]?}):.+\\.(last|max|min|avg)\\([0-9]+[smhdwKMGT]?\\)}/Uu";
preg_match_all($pattern, $label, $matches);
// for each functional macro
foreach ($matches[0] as $expr) {
$macro = $expr;
if ($replaceHosts !== null) {
// search for macros with all possible indecies
foreach ($replaceHosts as $i => $host) {
$macroTmp = $macro;
// repalce only macro in first position
$macro = preg_replace('/{({HOSTNAME' . $i . '}|{HOST.HOST' . $i . '}):(.*)}/U', '{' . $host['host'] . ':$2}', $macro);
// only one simple macro possible inside functional macro
if ($macro != $macroTmp) {
break;
}
}
}
// try to create valid expression
$expressionData = new CTriggerExpression();
if (!$expressionData->parse($macro) || !isset($expressionData->expressions[0])) {
continue;
}
// look in DB for coressponding item
$itemHost = $expressionData->expressions[0]['host'];
$key = $expressionData->expressions[0]['item'];
$function = $expressionData->expressions[0]['functionName'];
$parameter = convertFunctionValue($expressionData->expressions[0]['functionParamList'][0]);
$item = API::Item()->get(array('webitems' => true, 'filter' => array('host' => $itemHost, 'key_' => $key), 'output' => array('lastclock', 'value_type', 'lastvalue', 'units', 'valuemapid')));
$item = reset($item);
// if no corresponding item found with functional macro key and host
if (!$item) {
$label = str_replace($expr, '???', $label);
continue;
}
// do function type (last, min, max, avg) related actions
if (0 == strcmp($function, 'last')) {
if ($item['lastclock'] == 0) {
$label = str_replace($expr, '(' . _('no data') . ')', $label);
} else {
$mapping = false;
$value = formatItemValueType($item);
switch ($item['value_type']) {
case ITEM_VALUE_TYPE_STR:
$mapping = getMappedValue($value, $item['valuemapid']);
// break; is not missing here
// break; is not missing here
case ITEM_VALUE_TYPE_TEXT:
case ITEM_VALUE_TYPE_LOG:
if ($mapping !== false) {
$value = $mapping . ' (' . $value . ')';
}
break;
default:
$value = applyValueMap($value, $item['valuemapid']);
}
}
if (isset($value)) {
$label = str_replace($expr, $value, $label);
}
} elseif (0 == strcmp($function, 'min') || 0 == strcmp($function, 'max') || 0 == strcmp($function, 'avg')) {
// allowed item types for min, max and avg function
$history_table = array(ITEM_VALUE_TYPE_FLOAT => 'history', ITEM_VALUE_TYPE_UINT64 => 'history_uint');
if (!isset($history_table[$item['value_type']])) {
$label = str_replace($expr, '???', $label);
continue;
}
// search for item function data in DB corresponding history tables
$result = DBselect('SELECT ' . $function . '(value) AS value' . ' FROM ' . $history_table[$item['value_type']] . ' WHERE clock>' . (time() - $parameter) . ' AND itemid=' . zbx_dbstr($item['itemid']));
if (null === ($row = DBfetch($result))) {
$label = str_replace($expr, '(' . _('no data') . ')', $label);
} else {
$label = str_replace($expr, convert_units($row['value'], $item['units']), $label);
}
}
}
return $label;
}
