Example of using multiple labels with client_java:
// Declaration for job counts with labels for status=success|fail and
type=PDF|HTML|TEXT|RTF"
private static final Counter jobTotals = Counter.build() ...
labelNames("status", "type") ... ;
// statsData contains the data
String [] statsData = statsLine.split("\\t");
if (statsData[0].contains("true")) {
jobTotals.labels("success", statsData[1]).inc();
} else {
// When the job fails there is no valid job type
jobTotals.labels("fail", "").inc();
}
On Tuesday, February 15, 2022 at 12:23:39 PM UTC William Walsh wrote:
> I have coded a Prometheus client_java collector/exporter for a proprietary
> server that counts the number of its jobs and observes elapsed times and
> data lengths. This works fine. But, the requirement now is to expand on
> that, adding labels to the count of jobs; notionally:
>
> type="PDF|HTML|TEXT|RTF"
> status="fail|success"
>
> Unfortunately, the labels example in
> https://github.com/prometheus/client_java#labels isn't enough for me to
> bridge my lack of Prometheus understanding. Is that example indicating that
> by coding labelNames("method") in the Counter declaration and then
> calling requests.labels("get").inc() that the get method count is being
> incremented? If so, that sounds like Prometheus dynamically use that
> method label to store the count for get or post or any other method name
> passed, is that correct?
>
> In my experience, as soon as I add labelNames to a Counter declaration
> like this:
> private static final Counter jobsSuccessful =
> Counter.build().namespace("curam_xmlserver").name("job_successes").help("Successful
>
> xmlserver jobs").labelNames("type").register();
>
> it breaks the Counter. That is, without labelNames coded I get this
> output (no activity):
> curl -s http://localhost:8080/metrics | grep job_successes
> # HELP curam_xmlserver_job_successes_total Successful xmlserver jobs
> # TYPE curam_xmlserver_job_successes_total counter
> curam_xmlserver_job_successes_total 0.0
>
> And after adding labelNames there is no longer the zero counter
> (curam_xmlserver_job_successes_total
> 0.0) and the collector doesn't count or observe anything.
>
> Is this a bug that I should create an issue for, or what am I doing wrong,
> please? This is with release 0.15.0.
>
> Thank you,
> www
>
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