Maven Shade Plugin

To use metrics-spring in a project which uses the maven-shade-plugin, it is necessary to configure several resource transformers to instruct shade on how to merge resources.

Without this Spring will not work correctly and reporters will not be detected.

Sample shade plugin configuration:

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-shade-plugin</artifactId>
	<version>2.1</version>
	<executions>
		<execution>
			<phase>package</phase>
			<goals>
				<goal>shade</goal>
			</goals>
			<configuration>
				<transformers>
					<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
						<resource>META-INF/spring.handlers</resource>
					</transformer>
					<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
						<resource>META-INF/spring.schemas</resource>
					</transformer>
					<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
				</transformers>
			</configuration>
		</execution>
	</executions>
</plugin>