Gradle Plugin / dump plugin with jre dependency

[Matthew Aguirre]

I take that back, you will need the JDK to get the full on 
visualization libraries included.  Otherwise it defaults to headless 
with just the JRE.  I ran into that problem.

https://github.com/ZenHarbinger/torgo

While not gradle, it is a Java app with a GUI that works.
--
Matt

On Thu, Dec 29, 2016 at 12:06 PM, Matthew Aguirre 
<matt.aguirre at gmail.com> wrote:
> If you need the JDK (not just the jre), you should be able to do the 
> following:
> 
>>     stage-packages:
>>       - fontconfig-config
>>       - default-jdk
>>       - fonts-dejavu-extra
>>       - fonts-ipafont-gothic
> 
> In your snapcraft.yaml file instead of just using including the jre.
> 
> If this is your complete snapcraft.yaml file, you may also need:
>>     plugs: [home, x11, opengl, network, unity7]
> or a subset of these.
> 
> There are some limitations with Java that I've found.
> 
> Here is my wrapper:
>> #!/bin/bash
>> 
>> # Not good, needed for fontconfig
>> export XDG_DATA_HOME=$SNAP/usr/share
>> # Font Config
>> export FONTCONFIG_PATH=$SNAP/etc/fonts/config.d
>> export FONTCONFIG_FILE=$SNAP/etc/fonts/fonts.conf
>> export HOME=$SNAP_USER_DATA
>> 
>> export LIBGL_DRIVERS_PATH=$SNAP/usr/lib/x86_64-linux-gnu/dri
>> export LIBVA_DRIVERS_PATH=$SNAP/usr/lib/x86_64-linux-gnu/dri
>> export LIBGL_DEBUG=verbose
>> 
>> export PATH=$PATH:/usr/local/bin
>> 
>> java -Dswing.defaultlaf=javax.swing.plaf.nimbus.NimbusLookAndFeel 
>> -Duser.home=$HOME -Dsun.java2d.opengl=true -jar 
>> $SNAP/jar/torgo-1.4.1.jar "$@"
> 
> You must set the user.home directory this way for the application to 
> work (unless this has been fixed).
> 
> As far as updating gradle.  Put in a LaunchPad bug and register an 
> Issue.  While I added the gradlew plugin, I am not a gradle user, so 
> I can definitely work on adding/fixing work.
> 
> If the application tries to use xdg-open or open a web-browser, there 
> are more fixes that are needed in my experience.
> --
> Matt
> 
> On Thu, Dec 29, 2016 at 4:46 AM, Felix Natter <fnatter at gmx.net> wrote:
>> Dear snapcraft experts,
>> 
>> I am creating a simple snap for a java application:
>> 
>> BTW: My original post is here:
>> http://askubuntu.com/questions/865090/simple-java-snap-with-jre-dependency
>> 
>> name: freeplane-snap
>> version: 1.5.18-1
>> summary: Java program for working with Mind Maps
>> description: ...
>> confinement: devmode
>> grade: stable
>> 
>> apps:
>>   freeplane-snap:
>>     command: ./freeplane.sh
>> 
>> parts:
>>   main:
>>     plugin: dump
>>     source: freeplane-1.5.18/
>>     stage-packages: [openjdk-8-jre]
>>     filesets:
>>       mybuild:
>>         - "*"
>>     stage:
>>       - $mybuild
>>     snap:
>>       - $mybuild
>> 
>> Freeplane uses a gradle build system, but the snapcraft gradle 
>> plugin is
>> not powerful enough (expects "gradlew" to be there and not "gradle", 
>> and
>> is used for single jar projects, i.e. always with 'jar' option). 
>> Where
>> can I submit feature requests / patches for this?
>> 
>> So I am using the project's binary distribution (unzipped to
>> ./freeplane-1.5.18) with the 'dump' plugin, which works well. 
>> However,
>> since I'm not using a java build system, the jre is missing in the 
>> snap
>> (when running "freeplane-snap" I get an error that the JDK cannot be
>> found, NOT when running freeplane.sh directly). I tried to add it 
>> with
>> 'stage-packages: [openjdk-8-jre]' but this did not help.
>> 
>> Could you please tell me how to add the jre to the mix?
>> 
>> One more question: Hearing about this containment stuff, is it
>> possible/feasible (using plugs?) to to create a desktop application 
>> that
>> can read and write (mind maps) from/to everywhere, just like a normal
>> .deb? (like plugs: [network, home, tmp]?)
>> I also need to install the desktop file and mime type mappings to
>> /usr/share/... --> I assume I can do this with separate parts?
>> 
>> Many Thanks and Best Regards,
>> --
>> Felix Natter
>> 
>> --
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>> Snapcraft at lists.snapcraft.io
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