[jboss-jira] [JBoss JIRA] (WFCORE-3816) ExtensionIndexService throws NPE while reading extensions on the IBM jdk

[Petr Kremensky (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-3816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13575400#comment-13575400 ] 

Petr Kremensky commented on WFCORE-3816:
----------------------------------------

Hi [~swd847]
{noformat}
$ for JAR in `find /usr/lib/java/ibm-java-8.0-5.11/jre/lib/ext/ -name "*.jar" ` ; do unzip -l $JAR | grep MANIFEST &> /dev/null || echo $JAR ; done
/usr/lib/java/ibm-java-8.0-5.11/jre/lib/ext/traceformat.jar
/usr/lib/java/ibm-java-8.0-5.11/jre/lib/ext/dtfj.jar
/usr/lib/java/ibm-java-8.0-5.11/jre/lib/ext/dtfjview.jar
{noformat}
I've updated the MR to check for null instead, thanks. 

> ExtensionIndexService throws NPE while reading extensions on the IBM jdk
> ------------------------------------------------------------------------
>
>                 Key: WFCORE-3816
>                 URL: https://issues.jboss.org/browse/WFCORE-3816
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Server
>    Affects Versions: 5.0.0.Alpha7
>         Environment: {noformat}
> java version "1.8.0_161"
> Java(TM) SE Runtime Environment (build 8.0.5.11 - pxa6480sr5fp11-20180326_01(SR5 FP11))
> IBM J9 VM (build 2.9, JRE 1.8.0 Linux amd64-64 Compressed References 20180309_380776 (JIT enabled, AOT enabled)
> OpenJ9   - 49fcaf39
> OMR      - 5cbbadf
> IBM      - 4453dac)
> JCL - 20180319_01 based on Oracle jdk8u161-b12
> {noformat}
>            Reporter: Petr Kremensky
>            Assignee: Petr Kremensky
>
> https://github.com/wildfly/wildfly-core/blob/5.0.0.Alpha7/server/src/main/java/org/jboss/as/server/moduleservice/ExtensionIndexService.java#L94 reads extensions from jars manifest like:
> {code:java}
> File jar = new File(<jar>)
> final JarFile jarFile = new JarFile(jar);
> final Manifest manifest = jarFile.getManifest();
> final Attributes mainAttributes = manifest.getMainAttributes();
> ...
> {code}
> The latest [IBM jdk 8.0-5.11|https://developer.ibm.com/javasdk/downloads/sdk8/] (and possible some of previous releases) contains some jars \[1\] where {{manifest.getMainAttributes();}} throws NPE, causing deploy operation of archive with Extension-List to fail, see WFLY-10349.
> \[1\]
> ibm-java-8.0-5.11/jre/lib/ext/traceformat.jar: java.lang.NullPointerException
> ibm-java-8.0-5.11/jre/lib/ext/dtfj.jar: java.lang.NullPointerException
> ibm-java-8.0-5.11/jre/lib/ext/dtfjview.jar: java.lang.NullPointerException



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