[jira] [Created] (KARAF-2515) Prevent NPE in log:tail

["Jean-Baptiste Onofré (JIRA)" <ji...@apache.org>]

Jean-Baptiste Onofré created KARAF-2515:
-------------------------------------------

             Summary: Prevent NPE in log:tail
                 Key: KARAF-2515
                 URL: https://issues.apache.org/jira/browse/KARAF-2515
             Project: Karaf
          Issue Type: Bug
          Components: karaf-shell
    Affects Versions: 2.3.0
            Reporter: Jean-Baptiste Onofré
            Assignee: Jean-Baptiste Onofré
             Fix For: 2.4.0, 3.0.0, 2.3.4


In some cases (after a log:clean for instance), log:tail throws a NPE:

2013-10-11 14:53:51,037 | INFO  | l Console Thread | Console                          | araf.shell.console.jline.Console  198 | 14 - org.apache.karaf.shell.console - 2.3.1 | Exception caught while executing command
java.lang.NullPointerException
        at org.apache.karaf.shell.log.DisplayLog.getColor(DisplayLog.java:172)[34:org.apache.karaf.shell.log:2.3.1]
        at org.apache.karaf.shell.log.DisplayLog.display(DisplayLog.java:143)[34:org.apache.karaf.shell.log:2.3.1]
        at org.apache.karaf.shell.log.LogTail.doExecute(LogTail.java:40)[34:org.apache.karaf.shell.log:2.3.1]
        at org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:38)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.commands.basic.AbstractCommand.execute(AbstractCommand.java:35)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:474)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:400)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)[14:org.apache.karaf.shell.console:2.3.1]
        at org.apache.karaf.shell.console.jline.Console.run(Console.java:174)[14:org.apache.karaf.shell.console:2.3.1]
        at java.lang.Thread.run(Thread.java:722)[:1.7.0_21]
...

We should prevent this and fallback without colour if not found.



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