3DS Server Control Script (3dsctl.sh)

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#!/bin/bash
#
# 3DS Server control script.
 
usage()
{
cat <<EOF
 
Usage: $0 <options> <command>
 
This script allows to control 3DS Server instances (i.e. start/stop them).
 
OPTIONS:
 
   -n      The node ID (defaults to 1)
           The node ID is used to select:
            - the server configuration in the configuration home directory (e.g. node-1.properties)
            - the extract directory (e.g. node-1)
            - the startup log file to write in the out directory (e.g. catalina.out)
            - the PID file to write in the pid directory (e.g. node.pid)
 
   -c      The configuration home directory
 
   -j      The Java options to set (optional). See examples below...
 
   -f      Keep the started java process in the foreground (optional).
 
   -h      Show this message
 
COMMANDS:
 
   start          Starts an 3DS Server node
   stop           Stops an 3DS Server node
 
Java option examples:
 
   Set the maximum heap space for the 3DS Server to 1024 MB and the maximum PermGen space to 256 MB:
     -Xmx1024m -XX:MaxPermSize=256m
 
   Enable JSSE (Java Secure Socket Extension) debug output
   (Check http://docs.oracle.com/javase/8/docs/technotes/guides/security/jsse/JSSERefGuide.html#Debug for details):
     -Djavax.net.debug=all
 
EOF
}
 
# Set defaults for command line arguments
THREEDS_HOME=$(cd $(dirname "$0")/..; pwd)
THREEDS_CONFIG_HOME="$THREEDS_HOME/conf/"
NODE_ID="1"
JAVA_OPTS=""
DAEMON_MODE="true"
 
# Read command line arguments
while getopts "fn:c:j:h" OPTION
do
  case $OPTION in
    c)
      THREEDS_CONFIG_HOME=$OPTARG
      ;;
    j)
      JAVA_OPTS=$OPTARG
      ;;
    f)
      DAEMON_MODE="false"
      ;;
    n)
      NODE_ID=$OPTARG
      ;;
    h)
      usage
      exit
      ;;
    \?)
      echo "Unknown option: -$OPTARG" >&2
      exit 1
      ;;
    :)
      echo "Missing option argument for -$OPTARG" >&2
      exit 1
      ;;
    *)
      echo "Unimplemented option: -$OPTARG" >&2
      exit 1
      ;;
  esac
done
shift $(($OPTIND-1))
 
# Set variables
# if THREEDS_CONFIG_HOME is a directory, add / here
if [[ -d $THREEDS_CONFIG_HOME ]]; then
  config_length=${#THREEDS_CONFIG_HOME}
  last_char=${THREEDS_CONFIG_HOME:config_length-1:1}
  [ $last_char != "/" ] && THREEDS_CONFIG_HOME="$THREEDS_CONFIG_HOME/";
else
  echo "$THREEDS_CONFIG_HOME is not a directory";
  exit 1;
fi
NODE_DIR="node-$NODE_ID"
THREEDS_JAR="$THREEDS_HOME/lib/nca-3ds-server.jar"
PID_FILE="$THREEDS_HOME/$NODE_DIR/pid/node.pid"
CATALINA_OUT="$THREEDS_HOME/$NODE_DIR/out/catalina.out"
CURRENT_DATE=`date +"%Y-%m-%d"`
 
# Check files and directories
assert_file_exists_and_is_readable()
{
  if [[ ! -f $1 || ! -r $1 ]]; then
    echo "File $1 doesn't exist or is not readable" >&2
    exit 1
  fi
}
assert_directory_exists_and_is_writable()
{
  if [[ ! -d $1 || ! -w $1 ]]; then
    echo "Directory $1 doesn't exist or is not writable" >&2
    exit 1
  fi
}
create_directory_if_not_exists()
{
  if [[ ! -d $1 ]]; then
    mkdir $1
  fi
}
 
assert_file_exists_and_is_readable $THREEDS_JAR
assert_directory_exists_and_is_writable "$THREEDS_HOME"
create_directory_if_not_exists "$THREEDS_HOME/$NODE_DIR/"
create_directory_if_not_exists "$THREEDS_HOME/$NODE_DIR/pid/"
create_directory_if_not_exists "$THREEDS_HOME/$NODE_DIR/out/"
 
# Execute command
COMMAND=$1
case $COMMAND in
  start)
    if [[ -e $PID_FILE ]]; then
      PID=$(<$PID_FILE)
      CURRENT_PID=`ps aux | awk '{print $2}'  | grep "^$PID$"`
        if [[ "$CURRENT_PID" -eq "$PID" ]]; then
        echo "3DS Server node seems to be already started (there is a active PID for this node)"
        exit 0
      else
        rm $PID_FILE
      fi
    fi
    echo "Starting 3DS Server on node $NODE_ID"
    cd $THREEDS_HOME/$NODE_DIR/
 
    if [[ $DAEMON_MODE = "true" ]]; then
      java $JAVA_OPTS -jar $THREEDS_JAR --spring.config.name=application,node-$NODE_ID --spring.config.additional-location=$THREEDS_CONFIG_HOME > $CATALINA_OUT 2>&1 &
      echo $! > $PID_FILE
    else
      java $JAVA_OPTS -jar $THREEDS_JAR --spring.config.name=application,node-$NODE_ID --spring.config.additional-location=$THREEDS_CONFIG_HOME
    fi
    ;;
  stop)
    if [[ ! -e $PID_FILE ]]; then
      echo "3DS Server node seems not to be started (there is no PID file for this node)"
      exit 0
    fi
    PID=$(<$PID_FILE)
    echo "Stopping 3DS Server on node $NODE_ID"
    kill $PID
    rm $PID_FILE
    echo "3DS Server node is stopped"
    ;;
  *)
    usage
    exit 1
    ;;
esac