Hi StackOverflow!

My application requires several interface implementations which require a Jetty server to do their job. This is, however, not necessarily the case in every implementations of those interfaces so the Jetty server is only a dependency.

Since it would be a huge amount of pain to wrap the entire jetty server with all its logging, connector and Handler configurations, I want to inject the server to those implementations with Spring. I decided that injecting the Server class is not a good idea because an implementation could stop the server even if its required at another location. Currently I inject empty HandlerList classes to those implementations and they register their handlers to avoid those problems.

The Problem: Those handlers might interfere with other handlers for example: implementation one might register a handler for /foo and implementation two too... problem. Has anyone used Jetty in such an environment? And how could this problem be solved?

My XML to clarify my problem:

<bean id="jetty" class="org.eclipse.jetty.server.Server" destroy-method="stop">
    <property name="connectors">
        <list>
            <bean class="org.eclipse.jetty.server.bio.SocketConnector">
                <property name="host" value="10.8.0.46" />
                <property name="port" value="9999" />
            </bean>
        </list>
    </property>

    <property name="handler">
        <bean class="org.eclipse.jetty.server.handler.HandlerCollection">
            <property name="handlers">
                <list>
                    <ref bean="jetty.handlerList" />
                    <bean class="org.eclipse.jetty.server.handler.RequestLogHandler">
                        <property name="requestLog">
                            <bean class="org.eclipse.jetty.server.NCSARequestLog">
                                <constructor-arg value="${jetty.logfile}" />
                                <property name="extended" value="false"/>
                            </bean>
                        </property>
                    </bean>
                </list>
            </property>
        </bean>
    </property>

    <property name="sendServerVersion" value="false" />
</bean>

<bean id="jetty.handlerList" class="org.eclipse.jetty.server.handler.HandlerList" />

If I require an empty HandlerList I use something like this where com.example.myapp.util.ioc.CreateHandlerListFactory is a org.springframework.beans.factory.FactoryBean which creates a new HandlerList within the given HandlerList.

<constructor-arg>
    <bean class="com.example.myapp.util.ioc.CreateHandlerListFactory">
        <constructor-arg ref="jetty.handlerList"/>
    </bean>
</constructor-arg>