[jboss-jira] [JBoss JIRA] (AS7-5212) JRE-provided services are not available to deployments

Thu Aug 2 00:51:07 EDT 2012

    [ https://issues.jboss.org/browse/AS7-5212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12709323#comment-12709323 ] 

James Livingston commented on AS7-5212:
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ModuleXmlParser.parseSystemDependency() currently uses PathFilters.getDefaultImportFilter() which means that it will never pick up META-INF/services. Changing this to PathFilters.getDefaultImportFilterWithServices() makes it work if we can scan the JRE jars that the files are located in, but strictly speaking the JRE's classloader could have special handling for getResource that finds them.

Changing the method call (or adding a 'services="import"' option equivalent to module dependencies that alters it) works on the several JRE's I've tested (sun JDK 1.6.0_31, OpenJDK 1.7.0_3, some version of IBM j9 1.6), but there is a chance it may not work no others.

> JRE-provided services are not available to deployments
> ------------------------------------------------------
>
>                 Key: AS7-5212
>                 URL: https://issues.jboss.org/browse/AS7-5212
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: Class Loading
>    Affects Versions: 7.1.2.Final (EAP)
>            Reporter: James Livingston
>            Assignee: David Lloyd
>             Fix For: 7.1.3.Final (EAP)
>
>
> JBoss Modules does not currently support exporting META-INF/services from a system dependency as it does for module dependencies. As a result, any services provided by the JRE cannot be seen from other modules.
> This results in deployments not being able to use javax.print.PrintServiceLookup and other API, since they will not find any implementations.
> The modules/sun/jdk/main/service-loader-resources/ exists purely to work around this problem. It is not the best solution since the contents are JRE-specific.

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