JarCastingXQBase Metric
A lightweight metric framework for aggregating, collecting and showing metric data.
For basic concepts of metric, see Metric and Dashboard in SlideShare, or download here.
How to use Metric in server codes?
Import the metric-client library as a maven dependency:
<dependency>
<groupId>com.xqbase</groupId>
<artifactId>xqbase-metric-client</artifactId>
<version>0.2.5</version>
</dependency>
For a webapp project, add a filter into web.xml:
<filter>
<filter-name>MetricFilter</filter-name>
<filter-class>com.xqbase.metric.client.MetricFilter</filter-class>
<init-param>
<param-name>addresses</param-name>
<param-value>${metric.collectors}</param-value>
</init-param>
<init-param>
<param-name>prefix</param-name>
<param-value>${metric.prefix}</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>MetricFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
For a standalone application, use the following codes:
// Start aggregating metrics
MetricClient.startup(collectors);
...
// Log an event
Metric.put(metricName, metricValue, tagName1, tagValue1, tagName2, tagValue2, ...);
...
// Stop aggregating metrics
MetricClient.shutdown();
How to deploy a Metric server?
- Install MongoDB
- Deploy Metric Collector
- Deploy and Configure Dashboard
