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galaxy/rolling_restart.sh
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#!/bin/sh
cd `dirname $0`
check_if_not_started(){
# Search for all pids in the logs and tail for the last one
latest_pid=`egrep '^Starting server in PID [0-9]+\.$' $1 -o | sed 's/Starting server in PID //g;s/\.$//g' | tail -n 1`
# Grab the current pid from the file we were given
current_pid_in_file=$(cat $2);
# If they're equivalent, then the current pid file agrees with our logs
# and we've succesfully started
if [ $latest_pid -eq $current_pid_in_file ];
then
echo 0;
else
echo 1;
fi
}
# If there is a .venv/ directory, assume it contains a virtualenv that we
# should run this instance in.
if [ -d .venv ];
then
. .venv/bin/activate
fi
if [ -z "$GALAXY_CONFIG_FILE" ]; then
if [ -f universe_wsgi.ini ]; then
GALAXY_CONFIG_FILE=universe_wsgi.ini
elif [ -f config/galaxy.ini ]; then
GALAXY_CONFIG_FILE=config/galaxy.ini
else
GALAXY_CONFIG_FILE=config/galaxy.ini.sample
fi
export GALAXY_CONFIG_FILE
fi
servers=`sed -n 's/^\[server:\(.*\)\]/\1/ p' $GALAXY_CONFIG_FILE | xargs echo`
for server in $servers;
do
# If there's a pid
if [ -e $server.pid ]
then
# Then kill it
echo "Killing $server"
pid=`cat $server.pid`
kill $pid
else
# Otherwise just continue
echo "$server not running"
fi
# Start the server (and background) (should this be nohup'd?)
python ./scripts/paster.py serve $GALAXY_CONFIG_FILE --server-name=$server --pid-file=$server.pid --log-file=$server.log --daemon $@
# Wait for the server to start
sleep 1
# Grab the new pid
pid=`cat $server.pid`
result=1
# Wait for the latest pid in the file to be the pid we've grabbed
while [ $result -eq 1 ]
do
result=$(check_if_not_started $server.log $server.pid)
printf "."
sleep 1
done
echo
done