Получение информации о пороговых значениях из предупреждений
Значения предела, максимума, минимума и т. д. сохраняются в таблице данных alertAttributes, возвращаемой сервисом GetAlertDefinition.
Для доступа к определенным значениям в таблице данных требуется сервис оболочки.
Пример
Сервис получает предельное значение из предупреждения типа Выше в свойстве INTEGER:
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Входные данные
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Выходные данные
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||
|---|---|---|---|
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propertyName: STRING
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результат: INTEGER
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alertName: STRING
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Пример сценария
// These parameters have been parameterized into "alertName" and
// "propertyName" parameters at the service level. If these values
// will not change, they can be hard coded instead.
var params = {
alertName: alertName /* STRING */,
property: propertyName /* STRING */
};
// Retrieve the Alert Definition
var alertDef = me.GetAlertDefinition(params)
// Safety check on result from GetAlertDefinition()
if (alertDef != null && alertDef.rows.length > 0) {
// There should only be one row returned by GetAlertDefinition()
var alertProps = alertDef.rows[0];
// Safety check on alertAttributes infotable.
if (alertProps.alertAttributes != null && alertProps.alertAttributes.rows.length > 0) {
// Return the "limit" property from the alertAttributes table.
var result = alertProps.alertAttributes.rows[0].limit;
} else {
// The alertAttributes infotable was undefined or empty. This logs an error, but
// does not change the value returned. (Service returns no value.)
logger.error("AlertAttributes was null/empty!");
}
} else {
// The Alert Definition was empty.
// This is most commonly caused by invalid alertName/propertyName.
logger.error("Result from GetAlertDefinition was null/empty!");
// "propertyName" parameters at the service level. If these values
// will not change, they can be hard coded instead.
var params = {
alertName: alertName /* STRING */,
property: propertyName /* STRING */
};
// Retrieve the Alert Definition
var alertDef = me.GetAlertDefinition(params)
// Safety check on result from GetAlertDefinition()
if (alertDef != null && alertDef.rows.length > 0) {
// There should only be one row returned by GetAlertDefinition()
var alertProps = alertDef.rows[0];
// Safety check on alertAttributes infotable.
if (alertProps.alertAttributes != null && alertProps.alertAttributes.rows.length > 0) {
// Return the "limit" property from the alertAttributes table.
var result = alertProps.alertAttributes.rows[0].limit;
} else {
// The alertAttributes infotable was undefined or empty. This logs an error, but
// does not change the value returned. (Service returns no value.)
logger.error("AlertAttributes was null/empty!");
}
} else {
// The Alert Definition was empty.
// This is most commonly caused by invalid alertName/propertyName.
logger.error("Result from GetAlertDefinition was null/empty!");
См. также