Communication with prom-aggregation-gateway about promjs HOT 3 CLOSED

Hi there @benbenedek, joining you on the group of people thankful for this great lib being open-sourced :)

About the communication with the prom agg gateway, I'm having no trouble with using a very simple post request using the registry.metrics() output as the payload:

  var xhr = new XMLHttpRequest()
  let metricsEndpoint = promGatewayURL + `/api/ui/metrics`;
  xhr.open('POST', metricsEndpoint, true)
  xhr.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
  xhr.addEventListener('load', () => {
    console.log(metricsEndpoint, "prometheus-gateway response", xhr.status, xhr.responseText);
  });
  xhr.send(promRegistry.metrics());

from promjs.

@mrzacarias , @benbenedek ,

What's promGatewayURL in the above code. Can you clarify if PromGateway should be running on server to make it work? I am using promjs library in Angular application. Not sure how to export these metrics so that they are available in "/metrics" endpoint. Please let me know how to do it.

from promjs.

@ngrkishore Yes the gateway needs to be running on the server. Prometheus does a request as an HTTP client, so it will not be able to scrape metrics in a browser.

Please see my response here: #24

Closing this issue.

from promjs.