Onprem Gateway Webhook stopped working

Products

• DX Operational Intelligence

Issue/Introduction

 

Onprem gateway fails when calling webhook intermittently with following error... 

MessageProcesser.processIncomingMessages:64:    failed to publish metrics
java.lang.NullPointerException
        at com.doi.alarms.integration.outbound.webhook.JsonPublisher.match(JsonPublisher.java:188)
        at com.doi.alarms.integration.outbound.webhook.JsonPublisher.publish(JsonPublisher.java:162)
        at com.doi.alarms.integration.outbound.webhook.JsonPublisher.publish(JsonPublisher.java:147)
        at com.doi.alarms.integration.outbound.webhook.MessageProcesser.publishEvent(MessageProcesser.java:81)
        at com.doi.alarms.integration.outbound.webhook.MessageProcesser.processIncomingMessages(MessageProcesser.java:64)
        at com.doi.alarms.integration.outbound.webhook.MessageProcesser.run(MessageProcesser.java:196)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
 

Environment

Release : 20.2

Component : CA DOI Foundations

Cause

 

The webhook_gtw.cfg contained filters that were not present in the alarm record.

Specifically there was a filter on alarm_description but this field was not present in the alarm.

The source alarm was an APM summary alert

 

Resolution

 

A fix will be introduced to the on-premise gateway so that even if the field is missing, the exception will not be raised and the alarm will still be processed.