java获取prometheus某个指标在一段时间内的,指标信息,包括时间和标签,值,代码详细示例
时间: 2023-05-28 22:08:19 浏览: 568
以下是Java代码示例,用于获取Prometheus中某个指标在一段时间内的信息,包括时间戳、标签和值:
```java
import io.prometheus.client.Counter;
import io.prometheus.client.Gauge;
import io.prometheus.client.CollectorRegistry;
import io.prometheus.client.exporter.PushGateway;
import io.prometheus.client.exporter.HTTPResponse;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
public class PrometheusMetricsExample {
private static final String PUSHGATEWAY_URL = "http://localhost:9091";
private static final String JOB_NAME = "my_job";
private static final String METRIC_NAME = "my_metric";
private static final Counter myCounter = Counter.build()
.name(METRIC_NAME)
.help("My counter metric")
.labelNames("my_label")
.register();
private static final Gauge myGauge = Gauge.build()
.name("my_gauge")
.help("My gauge metric")
.labelNames("my_label")
.register();
public static void main(String[] args) throws IOException {
// Increment the counter
myCounter.labels("foo").inc();
myCounter.labels("bar").inc(3);
// Set the gauge value
myGauge.labels("baz").set(42);
// Push the metrics to the Pushgateway
CollectorRegistry registry = CollectorRegistry.defaultRegistry;
PushGateway pg = new PushGateway(PUSHGATEWAY_URL);
Map<String, String> groupingKey = new HashMap<>();
groupingKey.put("job", JOB_NAME);
pg.pushAdd(registry, groupingKey);
// Query the metrics from Prometheus
String query = String.format("%s{my_label=\"foo\"}[%dm]", METRIC_NAME, 5);
long endTime = new Date().getTime() / 1000;
long startTime = endTime - 600; // 10 minutes ago
HTTPResponse response = HTTPResponse.executeGetRequest(String.format("%s/api/v1/query_range?query=%s&start=%d&end=%d&step=%d", PUSHGATEWAY_URL, query, startTime, endTime, 15));
String responseBody = response.getBody();
System.out.println(responseBody);
}
}
```
此示例定义了两个指标:一个计数器和一个测量仪。然后,我们增加了一些度量值,并将它们推送到Pushgateway。最后,我们使用HTTP GET请求从Prometheus查询指标。在查询中,我们指定了指标名称、标签和时间范围,以及步长。查询将返回指标值的时间序列列表,其中包括时间戳、标签和值。
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