[Patch] Can't connect to window server - not enough permissions

[Carsten Fechtmann]

In case there is a problem with Java (or rather AWT) to connect to the X-server, which might be due to the Apache process not being allowed access to X, the java process (running PlanUML.jar) should be started in a 'headless' mode.

Here is a patch, that should take care of this (it works for me / OS X 10.6 server)

Index: plantuml/macro.py
===================================================================
--- plantuml/macro.py	(revision 7928)
+++ plantuml/macro.py	(working copy)
@@ -50,7 +50,7 @@
 
         if not graphs.has_key(img_id):
         
-            cmd = "java -jar \"%s\" -pipe" % (self.plantuml_jar)
+            cmd = "java -jar -Djava.awt.headless=true \"%s\" -pipe" % (self.plantuml_jar)
             p = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=PIPE)
             (stdout, stderr) = p.communicate(input=source)
             if p.returncode != 0:

[Carsten Fechtmann]

patch to run Java/AWT in headless mode

[Álvaro Iradier]

Thanks for the patch,

do you know if this will affect the operation of other systems? (mine is working correctly without the headless option, will it work anyway?)

Thanks.

[Carsten Fechtmann]

It should work as well, as it only tells AWT not to go through the - for this operation not required X server - but just make the graphics to be passed on to Trac.

However, since my setup requires this patch, I am in no position to try what happens if it works with this patch also on systems, where it works already 'out of the box'.

On the other hand, if you got such a system, it is a simple thing to try out.

[rlrj60]

Thanks for the path. It works fine for me.

[Álvaro Iradier]

(In [8052]) Applied trac from fecht to run in headless mode. Thanks. Fixes #7074