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From Curtis Rueden <ctrue...@wisc.edu>
Subject Re: Is there a Maven plugin for the Java debugger (jdb)?
Date Fri, 11 Oct 2013 20:20:36 GMT
Hi Andrew,

> Could you elaborate on the exact <plugin>...</plugin> snippet I would
> need to drop into my pom.xml in order to achieve this?

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>exec-maven-plugin</artifactId>
  <version>1.2.1</version>
  <configuration>
    <executable>jdb</executable>
    <arguments>
      <argument>-classpath</argument>
      <classpath />
      <argument>${jdb.mainClass}</argument>
    </arguments>
  </configuration>
  <executions>
    <execution>
      <goals>
        <goal>exec</goal>
      </goals>
    </execution>
  </executions>
</plugin>

> If I could just `mvn exec:exec <Class>`, starting a jdb session on
> <Class>.main(), that would be *perfect*.

We can get close. If you use the block above, you would launch with:

    mvn -Djdb.mainClass=<Class> exec:exec

Where "jdb.mainClass" is the property used in the XML above. And if that is
not concise enough for your taste you can choose a property with a shorter
name.

Working example inside a profile with a specific main class is here:

https://github.com/imagej/imagej/commit/8cfe0fde7d89c71e083c992f5c7432b29f09c483

Regards,
Curtis


On Fri, Oct 11, 2013 at 1:47 PM, Andrew Pennebaker <apennebaker@42six.com>wrote:

> Thank you, Curtis, that looks like an excellent suggestion!
>
> Could you elaborate on the exact <plugin>...</plugin> snippet I would need
> to drop into my pom.xml in order to achieve this?
>
> If I could just `mvn exec:exec <Class>`, starting a jdb session on
> <Class>.main(), that would be *perfect*.
>
>
> On Fri, Oct 11, 2013 at 1:20 PM, Curtis Rueden <ctrueden@wisc.edu> wrote:
>
> > Hi all,
> >
> > Rather than getting into an eclipse vs. vim vs. emacs flamewar, I'd
> rather
> > just ask: Andrew, did you try attaching your jdb to a running java
> instance
> > launched via exec-maven-plugin as I suggested yet?
> >
> > You can configure exec-maven-plugin in your pom so that launching the
> > compatible java process is as easy as "mvn exec:exec". You could even
> > specify jdb as the executable directly if that's what you want and then
> you
> > wouldn't even need the attachment step. Using profiles (yes, this is one
> of
> > their benign uses!) you can even set up multiple different behaviors of
> > exec:exec for different common situations. Really I don't think there is
> > any need whatsoever for a dedicated "mvn exec:jdb" here.
> >
> > -Curtis
> > On Oct 11, 2013 10:53 AM, "Andrew Pennebaker" <apennebaker@42six.com>
> > wrote:
> >
> > > Why would anyone want to do this? So we don't have to debug Maven
> > projects
> > > with Eclipse/IntelliJ, but the text editor of our choice. This is best
> > > accomplished by Maven tasks which interact with the command line jdb
> > tool.
> > >
> > >
> > > On Thu, Oct 10, 2013 at 5:27 PM, Russell Gold <russ@gold-family.us>
> > wrote:
> > >
> > > > Why do you want to do that? I suspect we are not getting at your
> actual
> > > > requirement.
> > > >
> > > > On Oct 10, 2013, at 2:25 PM, Andrew Pennebaker <
> apennebaker@42six.com>
> > > > wrote:
> > > >
> > > > > Yes, various Java IDEs can debug Java code, including Java code
> > > organized
> > > > > in Maven projects. What I'm interested in is debugging Java code
> in a
> > > > Maven
> > > > > project with an arbitrary text editor, not necessarily Eclipse or
> > > > Intellij,
> > > > > for example Emacs, or even Notepad, by invoking Maven tasks that
> > point
> > > to
> > > > > Maven plugins that interact with jdb.
> > > > >
> > > > >
> > > > > On Thu, Oct 10, 2013 at 2:09 PM, Sankaran, Nambi <
> nsankaran@ebay.com
> > >
> > > > wrote:
> > > > >
> > > > >> It very is easy to debug maven from eclipse, I have documented
> how I
> > > > debug
> > > > >> maven-jetty-plugin using eclipse
> > > > >>
> > > > >>
> > > >
> > >
> >
> http://nambisankaran.wordpress.com/2012/06/30/running-jetty-server-with-maven/
> > > > >>
> > > > >> -----Original Message-----
> > > > >> From: Andrew Pennebaker [mailto:apennebaker@42six.com]
> > > > >> Sent: Thursday, October 10, 2013 11:04 AM
> > > > >> To: Maven Users List
> > > > >> Subject: Re: Is there a Maven plugin for the Java debugger (jdb)?
> > > > >>
> > > > >> I could also use an IDE for package management, but I'd rather
use
> > > plain
> > > > >> Maven and an arbitrary text editor instead.
> > > > >>
> > > > >>
> > > > >> On Thu, Oct 10, 2013 at 11:21 AM, Russell Gold <
> russ@gold-family.us
> > >
> > > > >> wrote:
> > > > >>
> > > > >>> The simplest way to do this is actually to run it in your
IDE
> > > directly.
> > > > >>> IntellijIDEA community edition can import your maven project
and
> > thus
> > > > >>> get all of the dependencies. Then you just run the program
in the
> > > > >>> debugger. I presume Eclipse can do something similar.
> > > > >>>
> > > > >>> On Oct 10, 2013, at 10:52 AM, Andrew Pennebaker
> > > > >>> <apennebaker@42six.com>
> > > > >>> wrote:
> > > > >>>
> > > > >>>> Yes. I'm looking for a task like `mvn jdb:debug <Class>`
that
> > starts
> > > > >>>> a
> > > > >>> jdb
> > > > >>>> session on <Class>.main().
> > > > >>>>
> > > > >>>> I can run jdb on individual Java code outside of a Maven
> > structure,
> > > > >>>> but
> > > > >>> I'm
> > > > >>>> not sure how to inform jdb of Java code in a Maven project,
> > Maven's
> > > > >>>> CLASSPATH handling, etc. etc.
> > > > >>>>
> > > > >>>>
> > > > >>>> On Thu, Oct 10, 2013 at 10:46 AM, Benson Margulies <
> > > > >>> bimargulies@gmail.com>wrote:
> > > > >>>>
> > > > >>>>> What would that mean? Do you want to execute the
program in the
> > > > >>> debugger?
> > > > >>>>>
> > > > >>>>> On Thu, Oct 10, 2013 at 10:38 AM, Andrew Pennebaker
> > > > >>>>> <apennebaker@42six.com> wrote:
> > > > >>>>>> I'd like to run jdb over some of my classes in
a Maven
> project.
> > Is
> > > > >>> there
> > > > >>>>> a
> > > > >>>>>> plugin I can drop into my pom.xml?
> > > > >>>>>
> > > > >>>>>
> > -------------------------------------------------------------------
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> > > > >>>>>
> > > > >>>>>
> > > > >>>
> > > > >>> -----------------
> > > > >>> Author, Getting Started with Apache Maven <
> > > > >>> http://www.packtpub.com/getting-started-with-apache-maven/video>
> > > > >>>
> > > > >>> Come read my webnovel, Take a Lemon <http://www.takealemon.com>,
> > and
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> > > > >>>
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> > > > >>>
> > > > >>
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> > > > >>
> > > > >>
> > > >
> > > > -----------------
> > > > Author, Getting Started with Apache Maven <
> > > > http://www.packtpub.com/getting-started-with-apache-maven/video>
> > > >
> > > > Come read my webnovel, Take a Lemon <http://www.takealemon.com>,
> > > > and listen to the Misfile radio play <
> > > > http://www.fuzzyfacetheater.com/misfile/>!
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
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>

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