Newbie Question re: `sfClass' Error Message

I'm afraid that this is a "newbie" question, but I'll ask it anyway!  If
nothing else, at least this message contains a small bug report for SmartFrog
3.08.004 near the end.

I'm experimenting with SmartFrog 3.08.004 for controlling non-Java programs,
and I've written a simple configuration description "doit.sf" to play with the
scripting components.  This is mostly the same as the example near the end of
<http://www.hpl.hp.com/research/smartfrog/releasedocs/sfShellScript.html>.

	#include "org/smartfrog/services/shellscript/components.sf"
	sfConfig extends Compound {
	    aShell extends BashShell;

	    dns extends Script {
	        shell LAZY aShell;
	        deployScript ["echo deployed"];
	        terminateScript ["echo terminated"];
	    }
	}

When I run this on my system (FreeBSD 4.11-STABLE) with the command:

	sfStart localhost TEST1 /tmp/doit.sf

I see the following error message in the sfDaemon display:

	2006/02/08 11:30:33:470 MST [ERROR][RunProcess] HOST
	...rootProcess:TEST1:aShell - failed to complete execution
	<java.io.IOException: java.io.IOException: /bin/bash: not found>
        
It turns out that `bash' is installed as `/usr/local/bin/bash' on my system.
OK --- so I modify my configuration description to be this:

	#include "org/smartfrog/services/shellscript/components.sf"
	sfConfig extends Compound {
            fbsdBashExec extends ShellExec {
                cmd ["/usr/local/bin/bash"];
                echoErrorCmd "$?";
            }

            aShell extends Shell {
                exec extends DATA fbsdBashExec;
            }

            dns extends Script {
                shell LAZY aShell;
                deployScript ["echo deployed"];
                terminateScript ["echo terminated"];
            }
        }

When I try to start this, however, I get a long error message about `sfClass'
not being resolved.  The error output is as follows:

---BEGIN OUTPUT
2006/02/08 11:37:45:534 MST [WARN ][main] SFCORE_LOG - SmartFrog security is NOT active
SmartFrog 3.08.004
(C) Copyright 1998-2005 Hewlett-Packard Development Company, LP
2006/02/08 11:37:46:414 MST [ERROR][RMI TCP Connection(2)-155.98.60.39] SFCORE_LOG - SmartFrogDeploymentException: unnamed component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass, cause: SmartFrogResolutionException:: Reference not found,    Unresolved Reference: HERE sfClass <SmartFrogDeploymentException: unnamed component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass
    cause: SmartFrogResolutionException:: Reference not found
       Unresolved Reference: HERE sfClass>

2006/02/08 11:37:46:419 MST [ERROR][RMI TCP Connection(2)-155.98.60.39] SFCORE_LOG - SmartFrogDeploymentException: 'fbsdBashExec' component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass, cause: SmartFrogResolutionException:: Reference not found,    Unresolved Reference: HERE sfClass <SmartFrogDeploymentException: 'fbsdBashExec' component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass
    cause: SmartFrogResolutionException:: Reference not found
       Unresolved Reference: HERE sfClass>
        
 - FAILED when trying DEPLOY of 'TEST1',  [/tmp/doit.sf],  host:localhost
    Result:
      * Exception: 'SmartFrogDeploymentException: HERE TEST1 failed to deploy 'fbsdBashExec' component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass
         cause: SmartFrogResolutionException:: Reference not found
            Unresolved Reference: HERE sfClass'
      * Command line SFACT: '"TEST1":DEPLOY:"/tmp/doit.sf"::localhost:'
      * To String: ' name:TEST1,  type:DEPLOY,  url:/tmp/doit.sf,  host:localhost,  resultType:FAILED,  resultExceptionMessage:HERE TEST1 failed to deploy 'fbsdBashExec' component. SmartFrogResolutionException:: Reference not found, Unresolved Reference: HERE sfClass'

---END OUTPUT

I wish I could figure out what this error message means, but it's inscrutable
to me.  As far as I can tell, the daemon's classpath is set correctly; the
diagnostic output shows:

	-------------------------------------------
	 ClassPath
	-------------------------------------------
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/smartfrog-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sfServices-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sfExamples-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sf-tasks.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sf-loggingservices.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/log4j-1.2.8.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/SFGuiTools.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/SFGuiBrowser.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/smartfrog-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sfServices-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sfExamples-3.08.004.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sf-tasks.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/sf-loggingservices.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/log4j-1.2.8.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/SFGuiTools.jar
	/z/eeide/tmp/sf/SmartFrog.3.08.004/dist/lib/SFGuiBrowser.jar

I'm only trying to instantiate existing types of components, not create new
ones, and so I wouldn't expect to need to compile any component implementations
of my own.

Finally, the small bug report!

While trying to diagnose the problem described above, I noticed the following
typo in the SmartFrog sources, in ".../shellscript/components.sf":

	ShellExec extends Exec {
-->	  execShema extends ShellExecSchema;
	  echoCmd "echo";
	}

Thinking that this might somehow be related to my problem, I tried coding
around this by instantiating components based on `Exec' (not `ShellExec').  The
error message did not change.

Thank you for reading this far, and for entertaining what I fear is a newbie
question.  Any help or pointers to relevant documentation would be most
appreciated!

Eric.

-- 
-------------------------------------------------------------------------------
Eric Eide <eeide-sDh8Nw2yj/[email protected]>  .         University of Utah School of Computing
http://www.cs.utah.edu/~eeide/ . +1 (801) 585-5512 voice, +1 (801) 581-5843 FAX


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