Using Grafana backed by an InfluxDB data source, how can I visualize the average response times observed by a HTTP client that exposes metrics in a Prometheus style endpoint with a Summary type metric? What I want is a graph that shows the mean response times (sum / count) for a configured interval, say 1 minute.
An example metric from the endpoint looks like this:
http_client_response_time_millis_count{http_client_method="GET",http_client_url="http://localhost:5555/foobar",http_client_response_status_code="200",} 2.0
http_client_response_time_millis_sum{http_client_method="GET",http_client_url="http://localhost:5555/foobar",http_client_response_status_code="200",} 34.0
And in InfluxDB this gets imported to this type of structure:
In PromQL I would use the expression rate(http_client_response_time_millis_sum[1m]) / rate(http_client_response_time_millis_count[1m]).
The query needs to be expressed in InfluxQL since this is an existing Grafana + InfluxDB setup that I don't control.
Thanks!