我已经使用Dropwizard实现了一个Java Web服务。现在我希望它也能公开Prometheus指标。
我遵循了this非常简单的例子。然而,http://localhost:9090/metrics端点仍未公开。
这是相关代码:
pom.xml
中的依赖项:
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_dropwizard</artifactId>
<version>0.5.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_servlet -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_servlet</artifactId>
<version>0.5.0</version>
</dependency>
Java代码:
import io.dropwizard.Application;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
import io.prometheus.client.CollectorRegistry;
import io.prometheus.client.dropwizard.DropwizardExports;
import io.prometheus.client.exporter.MetricsServlet;
[...]
public class MyApplication extends Application<MyServiceConfiguration> {
@Override
public void run(final MyServiceConfiguration configuration,
final Environment environment) {
final MyServiceResource resource = createResource(configuration);
environment.jersey().register(resource);
registerHealthChecks(environment, resource);
registerMetrics(environment);
}
private void registerMetrics(Environment environment) {
CollectorRegistry collectorRegistry = new CollectorRegistry();
collectorRegistry.register(new DropwizardExports(environment.metrics()));
environment.admin().addServlet("metrics", new MetricsServlet(collectorRegistry))
.addMapping("/metrics");
}
有什么指针可以告诉我我做错了什么吗?