GoogleEarth display with Chromium

# $Id: autodmx.conf,v 1.2 2006/08/10 00:12:07 mjk Exp $
#
# Copyright (c) 2001, Stanford University
# All rights reserved
#
# See the file LICENSE.txt for information on redistributing this software.

#
# This configuration file is meant to be used with DMX.
# When everything's set up correctly, you can just type type name of your
# OpenGL app and Chromium will work automatically on your DMX display.
# This is far nicer than manually starting crservers!
#
# Prerequisites:
#  1. Your ~/.crconfigs file needs to be setup.  Specifically, it needs a
#     line like this:
#        *  /usr/local/Chromium/cr/mothership/configs/autodmx.conf %m %p
#     This tells Chromium's libcrfaker to use the autodmx.conf config file
#     when running any application (indicated by *).  The %m is replaced by
#     a random mothership port.  The %p is replaced by the program name.
#
#  2. libGL.so and libGL.so.1 must be symlink to libcrfaker.so
#
#  3. The back-end/cluster machines must have the crserver binary in the
#     search path (typically /usr/local/bin or /usr/bin) and a properly
#     set LD_LIBRARY_PATH (you can tweak it below).
#
#  4. rsh to the back-end/cluster machines must work.
#
# How it works:
#  1. When the app starts, libcrfaker will fail to find the mothership on
#     its first try.  That'll signal it to search the .crconfigs file for
#     a mothership config to spawn.  libcrfaker will choose a random port
#     number for the mothership.
#
#  2. The mothership is spawned with autodmx.conf.  In turn, it uses rsh
#     to start up the crservers on the back-end machines.  Another random
#     port number is used for the crservers.
#
#  3. Control returns to libcrfaker where it proceeds to load the client-side
#     SPU chain (tilesort).  Then, control returns to the application.
#
# Notes:
#  1. We use random port numbers (within a reasonable range) so that multiple
#     GL apps can use DMX/Chromium simultaneously.  If we don't use random
#     numbers we'd need some sort of port broker (complicated).
#
#  2. You will need to tweak 'crdir' here:
#
# @Copyright@
# 
# 				Rocks
# 		         www.rocksclusters.org
# 		        version 4.2  (Hallasan)
# 
# Copyright (c) 2006 The Regents of the University of California. All
# rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# 
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 
# 3. All advertising materials mentioning features or use of this
# software must display the following acknowledgement: 
# 
# 	"This product includes software developed by the Rocks 
# 	Cluster Group at the San Diego Supercomputer Center at the
# 	University of California, San Diego and its contributors."
# 
# 4. Neither the name or logo of this software nor the names of its
# authors may be used to endorse or promote products derived from this
# software without specific prior written permission.  The name of the
# software includes the following terms, and any derivatives thereof:
# "Rocks", "Rocks Clusters", and "Avalanche Installer".
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# @Copyright@
#
# $Log: autodmx.conf,v $
# Revision 1.2  2006/08/10 00:12:07  mjk
# 4.2 copyright
#
# Revision 1.1  2006/06/27 00:30:02  mjk
# - chromium reads config from DMX not from DB now
# - DMX config fixes for crazy Kim layout
# - Tile background color is a hash of the hostname
#

import os
import sys
import string
crdir = os.path.join(os.sep, 'opt', 'chromium')
sys.path.append(os.path.join(crdir, 'mothership', 'server'))

import random
from mothership import *

if len(sys.argv) < 3:
	print "Chromium mothership error: no program specified to run!"
	sys.exit(1)

mothershipPort = int(sys.argv[1])
program = sys.argv[2]

cr = CR()
cr.MTU( 10*1024*1024 )

# Call dmx_config to get information about the DMX tile layout.
import os
dmx = os.popen("%s/dmx_config 2>/dev/null" % crbindir).read()
if not dmx:
    print "Chromium mothership error: Chromium does not appear to have"
    print "Chromium mothership error: been compiled with DMX support."
    sys.exit(1)
dmx = eval(dmx)
if not dmx:
    print "Chromium mothership error: DMX does not appear to be running."
    sys.exit(1)

localHostname = os.uname()[1]

# choose random port for server communication
serverPort = random.randint(7000, 7100)

AUTOSTART = 1


# These values don't really matter!
TILE_WIDTH = 550
TILE_HEIGHT = 550

tilesortspu = SPU('tilesort')
tilesortspu.Conf('use_dmx', 1)
tilesortspu.Conf('retile_on_resize', 1)  # the default
tilesortspu.Conf('bucket_mode', 'Non-Uniform Grid')

clientnode = CRApplicationNode( )
clientnode.SetApplication( program )
clientnode.AddSPU( tilesortspu )
clientnode.Conf('track_window_size', 1)
clientnode.Conf('track_window_position', 1)

for tile in dmx:
    renderspu = SPU( 'render' )
    host = tile['display'].split(':')[0]
    renderspu.Conf('display_string', tile['display'])
    renderspu.Conf('render_to_app_window', 1)

    servernode = CRNetworkNode( host )
    servernode.AddTile( 0, 0, tile['width'], tile['height'])
    servernode.AddSPU( renderspu )

    # optimize_bucket is of no use w/ DMX.
    servernode.Conf('optimize_bucket', 0)
    servernode.Conf('use_dmx', 1)
    cr.AddNode( servernode )

    if AUTOSTART:
        servernode.AutoStart( ["/usr/bin/ssh", host,
                                "bash --login -c 'env DISPLAY=:0.0 LD_LIBRARY_PATH=%s %s/crserver -mothership %s:%d'" % (crlibdir, crbindir, localHostname, mothershipPort) ] )

    tilesortspu.AddServer( servernode, protocol='tcpip', port=serverPort )

cr.AddNode( clientnode )
cr.Go( mothershipPort )