startApi.sh

#!/bin/bash
PYTHONBIN=python

kill_child_processes() {
  #kill $SERVER_PID
  uwsgi --stop /tmp/omniapi.pid
  kill $WEBSOCKET_PID
  rm -f $LOCK_FILE
  exit 1
}

# Ctrl-C trap. Catches INT and service stop signal
trap kill_child_processes INT TERM SIGINT SIGTERM

echo "Service Starting: $(TZ='UTC' date)"

echo "Establishing environment variables..."
APPDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
LOGDIR=$APPDIR/logs
LOCK_FILE=$APPDIR/omniapi.lock

# Export directories for API scripts to use
export LOGDIR

echo "Starting Service watch loop..."
while true
do

  # check lock (not to run multiple times)
  if [ ! -f $LOCK_FILE ]; then

    # lock
    touch $LOCK_FILE

    #Update debug level

    if [ "$1" = "-debug" ]; then
        DEBUGLEVEL=$2
    else
        DEBUGLEVEL=0
    fi
    export DEBUGLEVEL

    ps cax | grep uwsgi > /dev/null
    if [ $? -eq 0 ]; then
        echo "uwsgi api is running."
      else
        echo "Starting uwsgi daemon..."
        cd $APPDIR/api
        uwsgi -s 127.0.0.1:1088 -p 10 -M --vhost --enable-threads --log-x-forwarded-for --logto $LOGDIR/apps.log --pidfile /tmp/omniapi.pid --stats /tmp/stats.socket &
        #get snapshot of directory files
        APISHA=`ls -lR $APPDIR/api/*.py | sha1sum`
    fi

    #check if api files have changed
    CHECKSHA=`ls -lR $APPDIR/api/*.py | sha1sum`
    #Trigger api reload if changed
    if [ "$APISHA" != "$CHECKSHA" ]; then
        uwsgi --reload /tmp/omniapi.pid
        APISHA=$CHECKSHA
        echo Api Reloaded
    fi

    ps aux | grep -v grep | grep "python websocket.py" > /dev/null
    if [ $? -eq 0 ]; then
        echo "websocket api is running."
      else
        echo "Starting websocket daemon..."
        cd $APPDIR/api
        $PYTHONBIN websocket.py > $LOGDIR/websocket.log 2>&1 &
        WEBSOCKET_PID=$!
    fi

    # unlock
    rm -f $LOCK_FILE
  fi

  #echo "Done, sleeping..."
  # Wait a minute, and do it all again.
  sleep 60
done