| Database-Monitoring |
| =================== |
| |
| JavaMelody supports out of the box JNDI DataSource in Web container (Tomcat). |
| Because Gerrit instantiates its data source on its own, JavaMelody can not |
| intercept it and therefore no SQL statistic reports can be gathered. |
| |
| To overcome that problem a data source proxy must be installed. |
| |
| Datasource interceptor JAR (that creates the data source proxy) must be |
| available in the bootstrap classpath for Gerrit core to load it. Moreover, |
| because the interceptor depends on javamelody core library, it must be |
| provided in the bootstrap classpath too. In this case the plugin must |
| not contain the javamelody core library (shaded jar). |
| |
| Thus the javamelody dependencies must not be packaged in the plugin itself. |
| |
| Add the following line to `$gerrit_site/etc/gerrit.config` under `database` section: |
| |
| ``` |
| dataSourceInterceptorClass = com.googlesource.gerrit.plugins.javamelody.MonitoringDataSourceInterceptor |
| ``` |
| |
| Compile the plugin according to the instructions in the [build](build.md) page. |
| |
| Deploy the plugin dependencies with datasource-interceptor to `$gerrit_site/lib`: |
| |
| ``` |
| cp bazel-bin/plugins/javamelody/javamelody-deps_deploy.jar `$gerrit_site/lib` |
| ``` |
| |
| Deploy the plugin without dependencies: |
| |
| ``` |
| cp bazel-bin/plugins/javamelody/javamelody.jar `$gerrit_site/plugins` |
| ``` |
| |
| Run Gerrit@Jetty and enjoy SQL statistics, a lรก: |
| |
| http://i.imgur.com/8EyAA9u.png |
