So I found an uberjar solution that works with the with my 20+ jar
application:
https://gist.github.com/981589
It uses one-jar, http://one-jar.sourceforge.net/ . The build process is
not pretty, but it works. It requires the one-jar bootstrap jar to be
exploded and updating the manifest with the class main for the app. The
app dependencies are crammed into the lib dir, with the app jar in the
main dir. It is all jarred using the jdk jar -cvmf command, the
package(:zip) did not work for some reason. Seems to start up a lot
faster than Buildr run command.
On 04/14/2011 11:51 AM, Michael Guymon wrote:
While the uberjar task works 'in theory' it ended up not being usable
for the project I am working on. The classloader of Classworlds would
bomb on reflection based injection used by Spring annotations. The app
is also noticeably slower on startup using Classworlds as well. *sigh*
The package(:jar).merge sounds good, but wouldn't duplicates get
overwritten? I have config xmls that are layered in various jars under
the same name. The solution I ended up with was to use `buildr run`
from a checkout of the app. Perhaps I'll tweak the app to avoid the
name collision and try the package(:jar).merge.
I am half tempted to monkey around with Classworlds (perhaps Maven's
shale?) directly to make it do what I want. Seems being able to make
uberjars would be useful. Of coarse, I like java as stand alone
services and avoid the monolithic app servers, so I am a bit bias.
On 04/14/2011 03:13 AM, Marc-André Laverdière wrote:
I think that Alex's option is good enough for most cases, but I do see
a point in integrating this. I think that Buildr will benefit a lot
from having a richer feature set, as it would attract more people to
it.
Just my 2 paise :)
On 4/14/11, Alex Boisvert<[email protected]> wrote:
Cool, thanks for sharing!
I usually do package(:jar).merge(some_other_jar) myself ... until it
gets
intolerably slow. Don't know why rubyzip is so CPU-consuming...
anyway at
that point I end up forking to zip/jar and do the same externally.
alex
On Wed, Apr 13, 2011 at 2:08 PM, Michael Guymon
<[email protected]>wrote:
I spent hours fighting Classworld's uberjar to get it to work,
figured I
would share the fruit of my labor. There are no examples that I
could find
and the docs are outdated, so I hit it with a hammer until it
worked. The
task will package the project jar and it's dependencies, allowing the
produced jar to be run by 'java -jar'. Here is the example task:
https://gist.github.com/c0804a3eb5c3793eee19
It copies the project jars, creates the classworld conf, explodes the
classwords-boot jar and wraps it up into project-ubjerjar-version.jar
--Michael
