<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient</artifactId>
<version>0.13.0</version>
</dependency>
import io.prometheus.client.Gauge;
//...
public class MyLibraryMetrics {
private static final Gauge methodExecutionTime = Gauge.build()
.name("mylibrary_method_execution_time")
.help("Execution time of my library methods")
.register();
public static void recordMethodExecutionTime(double time) {
methodExecutionTime.set(time);
}
}
import io.prometheus.client.exporter.HTTPServer;
//...
public class MyLibraryMetricsExporter {
public static void main(String[] args) throws IOException {
HTTPServer server = new HTTPServer(1234);
System.out.println("Prometheus Metrics Exporter started");
}
}
yaml
scrape_configs:
- job_name: 'my_library'
static_configs:
- targets: ['localhost:1234']
bash
./prometheus
mylibrary_method_execution_time
max(mylibrary_method_execution_time)
count_over_time(mylibrary_method_execution_time{le="1"}[1m])
