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From "Victor Antonovich (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KARAF-1976) Shell attempts to execute sub-shell actions as commands
Date Fri, 26 Oct 2012 13:15:12 GMT
Victor Antonovich created KARAF-1976:
----------------------------------------

             Summary: Shell attempts to execute sub-shell actions as commands
                 Key: KARAF-1976
                 URL: https://issues.apache.org/jira/browse/KARAF-1976
             Project: Karaf
          Issue Type: Bug
          Components: karaf-shell
    Affects Versions: 3.0.0
            Reporter: Victor Antonovich


In Apache Karaf 3.0.0-SNAPSHOT shell treats sub-shell actions as commands, i.e. command line
"config --help" lead to exception:

java.lang.NullPointerException
	at org.apache.karaf.shell.commands.basic.DefaultActionPreparator.prepare(DefaultActionPreparator.java:73)
	at org.apache.karaf.shell.commands.basic.AbstractCommand.execute(AbstractCommand.java:32)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.aries.proxy.impl.ProxyHandler$1.invoke(ProxyHandler.java:54)
	at org.apache.aries.proxy.impl.ProxyHandler.invoke(ProxyHandler.java:119)
	at org.apache.karaf.shell.console.commands.$BlueprintCommand1093027430.execute(Unknown Source)
	at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)
	at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:477)
	at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:403)
	at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
	at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)
	at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)
	at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)
	at org.apache.karaf.shell.console.impl.jline.ConsoleImpl.run(ConsoleImpl.java:182)
	at java.lang.Thread.run(Thread.java:662)
	at org.apache.karaf.shell.console.impl.jline.ConsoleFactoryService$3.doRun(ConsoleFactoryService.java:102)
	at org.apache.karaf.shell.console.impl.jline.ConsoleFactoryService$3$1.run(ConsoleFactoryService.java:93)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:337)
	at org.apache.karaf.shell.console.impl.jline.ConsoleFactoryService$3.run(ConsoleFactoryService.java:91)

And worst thing is that this bug makes "ssh" command unusable because shell trying to execute
"ssh" sub-shell action. This problem can be solved by using full command name "ssh:ssh", but
this is impossible in case of derived shell commands, for example "instance:connect".

It seems shell should ignore sub-shell actions while resolving command with argument(s).


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