On Tue, 6 Oct 2020 at 12:17, John Dexter <[email protected]> wrote:
> I've been looking at examples in the Java and C++ client libs, and it > doesn't mirror my understanding of label rules: > https://github.com/prometheus/client_java#labels > > I thought: > > 1. each metric could have zero or more named labels > 2. each label must have a pre-determined set of allowed values > > This is a should, not a must. Sometimes you just can't know in advance what the label values would be. > > 1. when setting a metric value, all label dimensions *must* be > specified from these allowed values > > And accordingly here this is also a should. > But the examples don't work that way: > Counter calculationsCounter = Counter.build() > .name("my_library_calculations_total").help("Total calls.") > .labelNames("key").register(); > ... > void processThatCalculates(String key) { > calculationsCounter.labels(key).inc(); // Run calculations. } } > > In this example, I don't see where "key" allowed values are enumerated. I > also don't see how labels(key) knows which label it is referring to. I > might have multiple labels. > labels takes a varidic of strings, which matches the order of labels you passed to labelNames. Brian > > I wish I could find a non-trivial example which shows what the output > scrape would look like. Can anyone help? > > -- > You received this message because you are subscribed to the Google Groups > "Prometheus Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/prometheus-users/f221c413-04cf-495b-9ae5-2d825477bab7n%40googlegroups.com > <https://groups.google.com/d/msgid/prometheus-users/f221c413-04cf-495b-9ae5-2d825477bab7n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Brian Brazil www.robustperception.io -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CAHJKeLrL03o5qpY69U0JZb0sc%3DgKXoiDKnQBj10k0SPByHGYQg%40mail.gmail.com.
