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Subject: Re: [daemon] jsvc won't recognize my entry point class
From: Ian Emmons <iemmons@bbn.com>
In-Reply-To: <51361F0A.40702@apache.org>
Date: Thu, 7 Mar 2013 08:42:12 -0500
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On Mar 5, 2013, at 11:36 AM, Mladen Turk <mturk@apache.org> wrote:
> On 03/04/2013 06:00 PM, Ian Emmons wrote:
>> Update:  I've done some digging in the jsvc source code, and it =
appears to be at odds with the documentation [1].  The docs indicate =
that I can (a) write a Java class that implements the Daemon interface, =
or (b) define a class that implements four specific methods (init, =
start, stop, destroy, with specific signatures).
>>=20
>> If I choose (a), the docs say I needs to put the commons-daemon jar =
on my classpath (an obvious requirement), but if I choose (b), then the =
jar is not needed.  However, the jsvc source code seems to load the =
DaemonLoader class in both cases, and so therefore the jar is always =
required.
>>=20
>> Can a someone familiar with the jsvc internals confirm this analysis? =
 If I am correct, then I will enter a JIRA issue against the docs.
>=20
> Yes, commons-daemon is always required.  If you do not specify Daemon =
interface, it's still created internally and calls your methods.  I =
don't see anything that says that its not required. It's your =
presumption, so perhaps a statement that its always needed would be more =
clear.  You are welcome to write something and if it make sense, I'll =
commit it.

The part of the docs I'm referring to is [1], where it shows two =
examples of invoking jsvc, one corresponding to case (a) and the other =
to case (b).  The only difference between the two is that the example =
for case (b) omits the commons-daemon jar from the class path.  The =
change I would suggest it to make the second example identical to the =
first.

[1] http://commons.apache.org/proper/commons-daemon/jsvc.html#Using_jsvc=

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