yotam-js-metrics-test

This topic includes instructions on how to send custom metrics to Logz.io from your Node.js application.

The included example uses the OpenTelemetry JS SDK and its based on OpenTelemetry exporter collector proto.

Quick start

Before you begin, you'll need: Node 8 or higher

Add instruments to your application:

Set the variables in the following code snippet:

Environment variable	Description
url	The Logz.io Listener URL for for your region, configured to use port 8052 for http traffic, or port 8053 for https traffic.
token	Your Logz.io Prometheus Metrics account token.

Types of metric instruments

For more information, see the OpenTelemetry documentation.

Name	Behavior	Default aggregation
Counter	Metric value can only go up or be reset to 0, calculated per counter.Add(context,value,labels) request.	Sum
UpDownCounter	Metric value can arbitrarily increment or decrement, calculated per updowncounter.Add(context,value,labels) request.	Sum
ValueRecorder	Metric values captured by the valuerecorder.Record(context,value,labels) function, calculated per request.	TBD
SumObserver	Metric value can only go up or be reset to 0, calculated per push interval.	Sum
UpDownSumObserver	Metric value can arbitrarily increment or decrement, calculated per push interval.	Sum
ValueObserver	Metric values captured by the callback function, calculated per push interval.	LastValue