element-web/riot/start.sh

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#!/bin/bash
PORT=5000
BASE_DIR=$(readlink -f $(dirname $0))
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PIDFILE=$BASE_DIR/riot.pid
CONFIG_BACKUP=config.e2etests_backup.json
if [ -f $PIDFILE ]; then
exit
fi
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cd $BASE_DIR/
echo -n "starting riot on http://localhost:$PORT ... "
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pushd riot-web/webapp/ > /dev/null
# backup config file before we copy template
if [ -f config.json ]; then
mv config.json $CONFIG_BACKUP
fi
cp $BASE_DIR/config-template/config.json .
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LOGFILE=$(mktemp)
# run web server in the background, showing output on error
(
python -m SimpleHTTPServer $PORT > $LOGFILE 2>&1 &
PID=$!
echo $PID > $PIDFILE
# wait so subshell does not exit
# otherwise sleep below would not work
wait $PID; RESULT=$?
# NOT expected SIGTERM (128 + 15)
# from stop.sh?
if [ $RESULT -ne 143 ]; then
echo "failed"
cat $LOGFILE
rm $PIDFILE 2> /dev/null
fi
rm $LOGFILE
exit $RESULT
)&
# to be able to return the exit code for immediate errors (like address already in use)
# we wait for a short amount of time in the background and exit when the first
# child process exists
sleep 0.5 &
# wait the first child process to exit (python or sleep)
wait -n; RESULT=$?
# return exit code of first child to exit
if [ $RESULT -eq 0 ]; then
echo "running"
fi
exit $RESULT