Event Grid - No failure case when publishing events

Hi,

I am using nodejs library for Event Grid (azure-eventgrid).

If I provide wrong values for Topic Endpoint or Access Key parts, publishing events doesn’t fail as expected. It doesn’t output anything for neither then or catch part.

I am using this in a Azure Functions component.

let topicCreds = new msRestAzure.TopicCredentials(EVENT_GRID_ACCESS_KEY);
let egClient = new eventGrid(topicCreds);
let topicUrl = url.parse(EVENT_GRID_TOPIC_ENDPOINT, true);
let topicHostName = topicUrl.host;

egClient.publishEvents(topicHostName, events).then((result) => {
    context.log.info('Published all events to Event Grid!')
}).catch((err) => {
    context.log.error('Event Grid publishing events error: ' + err);
});

How can I fetch failure cases?

[mustafababil]

Thank you @chradek. Now I got what I expect. Thanks for your time. @ramya-rao-a I am closing the issue as @chradek helped me a lot.

[chradek]

@mustafababil I believe the issue is because you’re calling context.done() at the bottom of your function outside of your publishEvents call. Since publishEvents is non-blocking, execution will continue to the end of your function before your then or catch handlers are invoked.

Since you’re already using an async function, you can use await with publishEvents instead to get the affect you want:

try {
  const result  = await egClient.publishEvents(topicHostName, events);
  let message = `Published all events to Event Grid with Event Type '${EVENT_GRID_PUBLISH_EVENT_TYPE}'.`;
  context.log.info(message);
} catch (error) {
  let message = `Error in publishing events to Event Grid: ${error}`;
  context.done(message);
}