GetActiveAlarms filtering on a custom property

204 viewsautomation scripts filtering get Alarms SLNet
4
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Hello,

I tried to use the GetActiveAlarmsMessage to fetch all alarms and filter them by a custom property. I found how to implement filtering by various fields through other dojo questions, but I'm struggling getting the filter to work for my custom property.

Here's how it looks:

var alarmFilterItem = new AlarmFilterItemString(AlarmFilterField.PropertyValue, "Alarm.CMDB System", AlarmFilterCompareType.Equality, new[] { "SNOW", "Automatic" });
var message = new GetActiveAlarmsMessage(-1)
{
Filter = new AlarmFilter(alarmFilterItem),
};

I read in the answers of this question that I need a prefix before the property name to specify it's source. I'm not sure if the prefix for custom properties is different, or it's not possible at all as I get a result with 0 alarms with the displayed request.

Any help is appreciated!

Xander Warszawski [SLC] [DevOps Advocate] Answered question 31st July 2025

2 Answers

2
236 1 Comment

Hi Benjamin,

I tried doing this using your code and this seems to work fine on my system.
What database are you using? This could be a clue as to why it isn't working for you.

Kind regards,

Xander

Benjamin Hodžić [SLC] [DevOps Advocate] Posted new comment 1st August 2025
Benjamin Hodžić [SLC] [DevOps Advocate] commented

Hello Xander, thanks for replying.

I figured it out in the meanwhile, explained in the other comment.

Best regards!
2
20.13K 1 Comment

Hi Benjamin,

I performed a small test using a modified version of this ad-hoc data source SLC-GQIDS-ActiveAlarmsUsingFilter, and I was able to successfully retrieve an active alarm that matches the specified filter criteria. Below is a snippet of the modified version for your reference:

string propertyName = "Alarm.ClassAlarm";
string propertyValue = "Gold";

var alarmFilterByProperty = new AlarmFilterItemString(AlarmFilterField.PropertyValue, propertyName, AlarmFilterCompareType.Equality, new[] {propertyValue} );

var filter = new AlarmFilter(filterItems: new AlarmFilterItem[] { alarmFilterByProperty });
var msg = new GetActiveAlarmsMessage() { Filter = filter };

var alarmsResponse = engine.SendSLNetSingleResponseMessage(msg) as ActiveAlarmsResponseMessage;
if (alarmsResponse != null)
{
return alarmsResponse.ActiveAlarms.WhereNotNull().ToList();
}

The alarm that I am using for my test:

And the result:

Hope it helps.

Benjamin Hodžić [SLC] [DevOps Advocate] Posted new comment 1st August 2025
Benjamin Hodžić [SLC] [DevOps Advocate] commented

Hi Miguel, thanks for taking the time to test this.

By displaying my property in the alarm console, just like you did, I found out that the alarm inherited it from the service, which means that my filter should have started with the prefix "Service.". That way it works.

Thank you!