Issue fetching EventHubDroppedEvents using Generic metric declaration.

[agmimidi]

Hi.

I am trying to fetch the Dropped events from an ApiManagementService resource. Using the following configuration. (resource group is inherited from the block AzureMetadata).

  - name: azApiDroppedEvents
    description: "Number of events skipped because of queue size limit reached"
    resourceType: Generic
    azureMetricConfiguration:
      metricName: EventHubDroppedEvents
      aggregation:
        type: Total
    resources:
    - resourceUri: Microsoft.ApiManagement/service/{confidential}

But I keep getting the following error:

promitor-agent-scraper-5bd6b57b89-4vf5h:System.ArgumentException: [details cannot be Null, empty or white-space. (Parameter 'details')
promitor-agent-scraper-5bd6b57b89-4vf5h:   at GuardNet.Guard.For[TException(Func`1 predicate, TException exception)
promitor-agent-scraper-5bd6b57b89-4vf5h:   at GuardNet.Guard.NotNullOrWhitespace[TException(String param, TException exception)
promitor-agent-scraper-5bd6b57b89-4vf5h:   at GuardNet.Guard.NotNullOrWhitespace(String param, String paramName, String message)
promitor-agent-scraper-5bd6b57b89-4vf5h:   at GuardNet.Guard.NotNullOrWhitespace(String param, String paramName)
promitor-agent-scraper-5bd6b57b89-4vf5h:   at Promitor.Integrations.AzureMonitor.Exceptions.MetricInformationNotFoundException..ctor(String name, String details, String dimension) in /src/Promitor.Integrations.AzureMonitor/MetricInformationNotFoundException.cs:line 33
promitor-agent-scraper-5bd6b57b89-4vf5h:   at Promitor.Integrations.AzureMonitor.AzureMonitorClient.QueryMetricAsync(String metricName, String metricDimension, AggregationType aggregationType, TimeSpan aggregationInterval, String resourceId, String metricFilter) in /src/Promitor.Integrations.AzureMonitor/AzureMonitorClient.cs:line 85
promitor-agent-scraper-5bd6b57b89-4vf5h:   at Promitor.Core.Scraping.AzureMonitorScraper`1.ScrapeResourceAsync(String subscriptionId, ScrapeDefinition`1 scrapeDefinition, TResourceDefinition resourceDefinition, AggregationType aggregationType, TimeSpan aggregationInterval) in /src/Promitor.Core.Scraping/AzureMonitorScraper.cs:line 51
promitor-agent-scraper-5bd6b57b89-4vf5h:   at Promitor.Core.Scraping.Scraper`1.ScrapeAsync(ScrapeDefinition`1 scrapeDefinition) in /src/Promitor.Core.Scraping/Scraper.cs:line 70

The Promitor deployment is on a k8s cluster and has been deployed using Helm .
Container version is v2.1.0
I am also collecting other metrics (Generic and targeted) without any issues. So (I think) the configuration of Promitor is correct.

Cheers and thanks for a great product
Angelos

[tomkerkhove]

Sorry about this.

Can you share the graph in the Azure portal please? That would help me better understand.

Do you have more info if you enable Azure Monitor logging?

[agmimidi]

Hi Tom,

No need to apologize 👍

I have attached the Azure graph as well as a screenshot from the Azure list of metrics. Hope that helps!

Unfortunately I do not have full access to the portal to enable logging.

Cheers, Angelos

[tomkerkhove]

A-ha, it's not reporting any metrics so that might be it - I'll try to ship out a new fix asap.

Sorry about this.

[tomkerkhove]

This is a bug that I'm tracking in #1545

[Charlotte-br560]

It seems like there's an issue with the metric configuration for fetching EventHubDroppedEvents. The error indicates that there's a problem with the details parameter being null or empty.

Make sure that the metricName, dimension, and other necessary parameters are correctly set in your configuration. Double-check your configuration against the documentation to ensure everything is in place. If everything seems correct, you might want to debug further to pinpoint the exact cause of the issue.

Hope this helps! Let me know if you need further assistance.