Counters for specific use-cases

[AbhishekBose]

Hello Team, I want to create a counter and increment it only when a certain event occurs. How can I do that? In the example given for http_requested_languages_total , the counter is incremented for every request.

Can you selectively only call the increment function? What would be the best way to go about this?

[oysteins10]

I assume you can do something like this:

def instrumentator(info: Info):
     if some_condition:
          # Dont do anything
          return
     # Otherwise we increment
     COUNT_METRIC.inc()

[AbhishekBose]

@oysteins10 @trallnag I have created a metric in this manner

@staticmethod
    def invalid_doc_type_counter():
        METRIC = Counter(
            "invalid_doc_type_count",
            "Number of times invalid doc type issue came up",
            labelnames=("handler",)
                         )
        METRIC.labels("info.modified_handler").inc()

And I am trying to call it in another function in this manner

        if not filtered_det:
            #Invalid doc type counter
            Counters.invalid_doc_type_counter()
            raise ValueError("Invalid Doc Type")

When I hit the /metrics endpoint invalid_doc_type_count_total{handler="info.modified_handler"} 1.0 <---This value remains at one and doesn't change