[jboss-jira] [JBoss JIRA] Created: (JBAS-4762) Make distributable webapps depend on the clustering cache

[Brian Stansberry (JIRA)]

Make distributable webapps depend on the clustering cache
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                 Key: JBAS-4762
                 URL: http://jira.jboss.com/jira/browse/JBAS-4762
             Project: JBoss Application Server
          Issue Type: Task
      Security Level: Public (Everyone can see)
          Components: Clustering, Web (Tomcat) service
            Reporter: Brian Stansberry
         Assigned To: Brian Stansberry
             Fix For:  JBossAS-5.0.0.Beta3


In 4.x, in the all config the JBossWeb service itself depends on the jboss.cache:service=TomcatClusteringCache mbean.  In AS 5 this is not viable, as the relevant bean is the TomcatDeployer, which can't/shouldn't depend on a deploy folder service like the cache.  In any case, it's really the <distributable/> webapps that depend on the cache, not the deployer.

The TomcatDeployer should be adding a dependency on the cache to deployments where WebMetaData.getDistributable() is true (probably in superclass AbstractWarDeployer.deployWebModule()).

A problem with this dependency-based approach is it breaks the current "feature" whereby apps marked <distributable/> can be deployed in the default config. When this is done, the 4.x deployment code detects the absence of the cache and falls back on using the standard non-distributable session manager.  That won't work if we introduce a deployment dependency.

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