Hello Jawad, Metrics are to be chosen from a drop-down list in Stackdriver. The usual interest is to get notified if the value of the metric crosses a certain chosen threshold. There is also an alert for missing metrics, but not for present metrics. This is very likely due to the fact that a present metric has a value. If you set it to zero (or a very small number, for that matter), then you get notified if a metric is present.
To further clarify your requirement: what do you mean exactly by a present metric and how do you imagine the most interesting use case for that situation, step by step? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/28beb046-e930-42dc-894a-e2a10053dbe1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
