So NewMetricWithTimestamp() returns a Metric interface object that you can then emit from a Collector's Collect() method. See this example from cadvisor: https://github.com/google/cadvisor/blob/19df107fd64fa31efc90e186af91b97f38d205e9/metrics/prometheus.go#L1931-L1934
You can see more usage example here: https://sourcegraph.com/search?q=context:global+prometheus.NewMetricWithTimestamp&patternType=literal In general, it seems like you are building an exporter (a process that proxies/translates existing values into the Prometheus format, in your case those existing values are coming from a file), so you are not instrumenting the exporting process itself, and thus you probably don't want to use the "NewGauge()" / "mygauge.WithLabelValues().Set()" functions that are for direct instrumentation of a process. Instead, you'll want to implement a Collector interface that just returns a set of proxied metrics, as outlined here: * https://pkg.go.dev/github.com/prometheus/client_golang/prometheus#hdr-Custom_Collectors_and_constant_Metrics * https://prometheus.io/docs/instrumenting/writing_exporters/#collectors On Tue, Aug 24, 2021 at 7:43 PM Prince <[email protected]> wrote: > Thank you, As I understood the NewMetricWithTimestamp() takes two > parameters one the time and the other one is metric. So as my metric name > is go_duration, so I did this : > > *1st way:* > *go func(){* > go_duration.WithLabelValues("type").Set(12345.678) > prometheus.NewMetricWithTimestamp(time_var, go_duration ) > *}()* > > *2nd way: * > *go func(){* > > prometheus.NewMetricWithTimestamp(time_var,go_duration.WithLabelValues("type").Set(12345.678)) > *}()* > > > Using 1st way not getting the timestamp only values are getting scarped. > Using 2nd way getting error as: > "go_duration.WithLabelValues("type").Set(12345.678) > used as a value" > On Tuesday, August 24, 2021 at 10:15:57 PM UTC+5:30 [email protected] > wrote: > >> Hi, >> >> You should be able to use the NewMetricWithTimestamp() function for this: >> https://pkg.go.dev/github.com/prometheus/client_golang/prometheus?utm_source=godoc#NewMetricWithTimestamp >> >> Note that client-side timestamps should only be used in exceptional >> circumstances, and if you still expect those timestamps to be regularly >> updated (because otherwise Prometheus will just collect a dot here and >> there and mostly show empty graphs). If that is not the case, consider >> omitting the client-side timestamp and instead sending a metric that >> includes the last-update timestamp in its sample value (like the >> node_exporter does for the mtime metric in its "textfile" collector module: >> https://github.com/prometheus/node_exporter/blob/b6215e649cdfc0398ca98df8e63f3773f1725840/collector/textfile.go#L38 >> ) >> >> Regards, >> Julius >> >> On Mon, Aug 23, 2021 at 2:03 PM Prince <[email protected]> wrote: >> >>> Hi everyone, I am new to prometheus. I am using type Gauge. I wanted to >>> get the timestamp along with the value. It will be great if anyone can help >>> on this. >>> example: >>> go_duration.WithLabelValues("type").Set(12345.678) >>> >>> so here collector is getting only 12345.678, I am reading this data from >>> a file where along with the vale there is a corresponding timestamp is >>> there. I want that too. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Prometheus Developers" 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-developers/f365ad0c-75b0-4bad-a75d-3980f0f61669n%40googlegroups.com >>> <https://groups.google.com/d/msgid/prometheus-developers/f365ad0c-75b0-4bad-a75d-3980f0f61669n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> >> >> -- >> Julius Volz >> PromLabs - promlabs.com >> > -- > You received this message because you are subscribed to the Google Groups > "Prometheus Developers" 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-developers/a69144c4-cfe1-42d8-9a46-a9fd1230f421n%40googlegroups.com > <https://groups.google.com/d/msgid/prometheus-developers/a69144c4-cfe1-42d8-9a46-a9fd1230f421n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Julius Volz PromLabs - promlabs.com -- You received this message because you are subscribed to the Google Groups "Prometheus Developers" 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-developers/CAObpH5y%3DoStT5kBJ%2BKKWnTFB3M4zbnu635XfT3f7moDxiLm-Jg%40mail.gmail.com.
