softwaremill-debug

Debug utilities

Maven dependency:

<dependency>
    <groupId>com.softwaremill.common</groupId>
    <artifactId>softwaremill-debug</artifactId>
</dependency>

Uses code from Seam forum by Tobias Hill.

Timing interceptor

Times method calls. The results can be displayed using the filter or printed manually using TimingResults.dumpCurrent().

To enable, annotate desired classes/methdods with @Timed and enable the interceptor in beans.xml:

<interceptors>
    <class>com.softwaremill.common.debug.timing.TimingInterceptor</class>
</interceptors>

Timing proxy

Times calls to methods on an object. The results can be displayed in the same way as for the interceptor. To create run:

SomeInterface proxied = TimingProxy.createFor(interceptedInstanceImplementingSomeInterface, SomeInterface.class);
// Now all invocations on proxied will be timed

Timing extension

Automatically adds the interceptor to all beans for which the fully qualified class name contains one of the strings in the comma-separated list given in the timed.autoadd system property.

E.g. if you add -Dtimed.autoadd=package1,UserFinderImpl to the Java startup options, the interceptor will be added to all beans which contain package1 or UserFinderImpl in their fully qualified class name.

Note that you also need to enable the interceptor in your beans.xml.

Timing filter

The filter shows the summarized results of all timings done through the interceptor or through the proxy after a request completes.

To enable, add to web.xml:

<filter>
    <filter-name>Debug</filter-name>
    <filter-class>com.softwaremill.common.debug.timing.TimingOutputFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>Debug</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>