#! /bin/sh

# -------------------------------------------------------------------------- #
# Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org)             #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
#--------------------------------------------------------------------------- #

if [ -z "$ONE_LOCATION" ]; then
    OCCI_PID=/var/run/one/occi-server.pid
    OCCI_SERVER=/usr/lib/one/ruby/cloud/occi/occi-server.rb
    OCCI_LOCK_FILE=/var/lock/one/.occi.lock
    OCCI_LOG=/var/log/one/occi-server.log
    OCCI_LOG_ERROR=/var/log/one/occi-server.error
    OCCI_ETC=/etc/one/occi-server.conf
else
    OCCI_PID=$ONE_LOCATION/var/occi-server.pid
    OCCI_SERVER=$ONE_LOCATION/lib/ruby/cloud/occi/occi-server.rb
    OCCI_LOCK_FILE=$ONE_LOCATION/var/.occi.lock
    OCCI_LOG=$ONE_LOCATION/var/occi-server.log
    OCCI_LOG_ERROR=$ONE_LOCATION/var/occi-server.error
    OCCI_ETC=$ONE_LOCATION/etc/occi-server.conf
fi

setup()
{
    eval `grep ^IMAGE_DIR= $OCCI_ETC `
    export TMPDIR=$IMAGE_DIR/tmp
    mkdir -p $TMPDIR

  if [ -f $OCCI_LOCK_FILE ]; then
    if [ -f  $OCCI_PID ]; then
      ONEPID=`cat $OCCI_PID`
      ps $OCCI_PID > /dev/null 2>&1
      if [ $? -eq 0 ]; then
        echo "OCCI Server is still running (PID:$OCCI_PID). Please try 'occi-server stop' first."
        exit 1
      fi
    fi
    echo "Stale .lock detected. Erasing it."
    rm $LOCK_FILE
  fi
}

start()
{
  if [ ! -f "$OCCI_SERVER" ]; then
    echo "Cannot find $OCCI_SERVER."
    exit 1
  fi

  # Start the occi-server daemon
  ruby $OCCI_SERVER >$OCCI_LOG 2>$OCCI_LOG_ERROR &

  LASTRC=$?
  LASTPID=$!

  if [ $LASTRC -ne 0 ]; then
		echo "Error executing occi-server."
		echo "Check $OCCI_LOG for more information"
    exit 1
  else
    echo $LASTPID > $OCCI_PID
  fi

  sleep 2
  ps $LASTPID > /dev/null 2>&1

  if [ $? -ne 0 ]; then
		echo "Error executing occi-server."
		echo "Check $OCCI_LOG for more information"
    exit 1
  fi

  echo "occi-server started"
}

#
# Function that stops the daemon/service
#
stop()
{
  if [ ! -f $OCCI_PID ]; then
    echo "Couldn't find occi-server process pid."
    exit 1
  fi

  # Kill the occi-server daemon

  kill -INT `cat $OCCI_PID` > /dev/null 2>&1

  # Remove pid files
  rm -f $OCCI_PID > /dev/null 2>&1

  echo "occi-server stopped"
}


case "$1" in
  start)
  setup
  start
  ;;
  stop)
  stop
  ;;
  *)
  echo "Usage: occi-server {start|stop}" >&2
  exit 3
  ;;
esac


