gen-testrender.sh

#!/bin/bash

# for emcee, called with the following arguments:
# gen-testrender.sh repourl branch linkname
# --
# usually, this means
# gen-testrender.sh git://github.com/brownan/Minecraft-Overviewer.git master brownan.master

# ----------------------
# ---- BEGIN CONFIG ----
# ----------------------

# local output, and associated web address
# and how long to keep renders around, in days
OUTPUT_DIR="/var/www/org/overviewer/htdocs/renders"
OUTPUT_WEB="http://overviewer.org/renders"
CACHE_TIME=1

# where to store the Overviewer repo, and where to log commands
OUTNAME=`date +%s`
LOGFILE=$OUTNAME.log

# link name to set in the output_dir, usually the branch name
#OUTLINK="other"
OUTLINK=$3

# where to find the exmaple
MAPDIR="../mco-addons/exmaple"

# what repo and branch to use for rendering
#REPO="git://github.com/brownan/Minecraft-Overviewer.git"
REPO=$1
#BRANCH="master"
BRANCH=$2

# python to use, and extra arguments to overviewer
PYTHON_CMD=python2.6
OVERVIEWER_ARGS=""

# --------------------
# ---- END CONFIG ----
# --------------------

# normalize current directory, and redirect our outputs
cd `dirname $0`
exec 3>&1 1>$LOGFILE 2>&1

# ubiquitus "clean up and return error" command
die()
{
	rm -rf `dirname $0`/$OUTNAME
	echo "render failed" >3
	exit 1
}

# fetch the latest exmaple, (external command)
# and store it's SHA1
./gen-exmaple.sh || die
MAPHASH=`cat ../mco-addons/.git/refs/heads/master | cut -c1-7`

# clone our repo and copy in settings.py
git clone $REPO $OUTNAME || die
if [ -e settings.py ]; then
	cp settings.py $OUTNAME/ || die
fi

# fetch and store the latest terrain.png (external command)
./gen-terrainpng.sh || die

# enter the checked-out repo
pushd $OUTNAME || die

# checkout the branch we want, and construct the overviewer-map hash
git checkout $BRANCH || die
MAINHASH=`git rev-parse HEAD | cut -c1-7`
WEBNAME=$MAINHASH-$MAPHASH

# if the render already exists, cleanup and exit
if [ -d $OUTPUT_DIR/$WEBNAME ]; then
	# echo the web address
	echo $OUTPUT_WEB/$WEBNAME >&3
	
	# pop out, and remove the log / repo
	popd
	rm -rf $OUTNAME
	rm -f $LOGFILE
	
    # update the named link mtime
	rm -f $OUTPUT_DIR/$OUTLINK
	ln -s $WEBNAME $OUTPUT_DIR/$OUTLINK
	
	exit 0
fi

# build overviewer, and pop out
$PYTHON_CMD setup.py build || die
popd || die

# construct a list of supported rendermodes
RENDERMODES=`$PYTHON_CMD ./$OUTNAME/overviewer.py --list-rendermodes | awk -- '{print $1}' | tr '\n' ',' | sed 's/.$//'`

# render!
$PYTHON_CMD ./$OUTNAME/overviewer.py --rendermodes=$RENDERMODES $OVERVIEWER_ARGS $MAPDIR $OUTPUT_DIR/$WEBNAME || die

# clean up the repo and log
rm -rf $OUTNAME
rm -f $LOGFILE

# touch renders with active links
touch `find $OUTPUT_DIR -maxdepth 1 -mindepth 1 -type l`

# clean up old renders
find $OUTPUT_DIR/ -maxdepth 1 -mindepth 1 -mtime +${CACHE_TIME} -type d | xargs rm -rf 1>/dev/null 2>&1

# remove broken links
find -L $OUTPUT_DIR -maxdepth 1 -mindepth 1 -type l -delete

# update the named link mtime
rm -f $OUTPUT_DIR/$OUTLINK
ln -s $WEBNAME $OUTPUT_DIR/$OUTLINK

# print the output url
echo $OUTPUT_WEB/$WEBNAME >&3