[las_users] The LAS reference map widget

[Roland Schweitzer <Roland.Schweitzer@xxxxxxxx>]

Hello,

In the more recent versions of LAS we use an OpenLayers-based JavaScript 
map widget for the user interface.  One of the advantages of this 
arrangement is that we no longer have to fuss with creating custom map 
background images for data that cover only small regions.  However, it 
does introduce problem when the server used by the map goes down.

Recently the server we've been using labs.metacarta.com has been 
off-line.  You can repair the problem on your servers by carefully 
editing the compiled JavaScript files that appear in the 
WebContent/JavaScript/components directory.

./gov.noaa.pmel.tmap.las.VizGal/4833E548D179867FA9863AE1FDBE7B8D.cache.html
./gov.noaa.pmel.tmap.las.VizGal/AF0CBC0802B7AD8B13EB9DF5AC7CB959.cache.html
./gov.noaa.pmel.tmap.las.VizGal/C40F1FA7FD830CF820B7202BA777626C.cache.html
./gov.noaa.pmel.tmap.las.VizGal/F40BB7B981B6D22684D2BF8F2833A1B1.cache.html
./gov.noaa.pmel.tmap.las.VizGal/F4EE93A1DD82535F533E1927198DE6A6.cache.html
./gov.noaa.pmel.tmap.las.VizGal/F4F02C4BF8F8200303C6C416F4747EEF.cache.html
./gov.noaa.pmel.tmap.las.NativeMapWidget/7E6E9CAA66DAA766E6AC5A0FD6AFBD25.cache.html 

./gov.noaa.pmel.tmap.las.NativeMapWidget/9F95EE9BBA5E4F7CC202B1BAFAFD2C48.cache.html 

./gov.noaa.pmel.tmap.las.NativeMapWidget/B2F31CE4D4A5B04D4564896844E8AF59.cache.html 

./gov.noaa.pmel.tmap.las.NativeMapWidget/C13E8E3738EBB86E66DCDAB0BB959D53.cache.html 

./gov.noaa.pmel.tmap.las.NativeMapWidget/C437350007D6D499CD12D974B0AE40B1.cache.html 

./gov.noaa.pmel.tmap.las.NativeMapWidget/DBA24FD083932A627A6ED92B620C7771.cache.html 


The hash keys of your files may be different from these.  Replace the  
'http://labs.metacarta.com/wms/vmap0' URL with 
'http://vmap0.tiles.osgeo.org/wms/vmap0' in each of these files. These 
are huge files with only one "line" of text containing obfuscated 
JavaScript code.

From the directory containing these files you can make the changes 
using this tcsh loop.

foreach file ( *.html )
foreach? mv $file $file.meta
foreach? sed -e 's/labs\.metacarta\.com/vmap0\.tiles\.osgeo\.org/g' 
$file.meta > $file
foreach? end

Once you have made the edits, you need get these files deployed on your 
server either by doing an "ant deploy" and stopping and starting your 
server, or copying the files to the appropriate directory in 
$TOMCAT_HOME.  And if you use the automatic cron script to verify your 
server is running run $LAS_HOME/bin/initialize_check.sh again.

Unfortunately, your users may have to clear their cache if they have 
visited your site recently to see map tiles again.

We will be switching these servers and, of course, making the map tile 
server a configurable option in a future release.  We are very sorry for 
the inconvenience.

Roland