#!/bin/sh
#
# Copyright (c) 2011-2012 EBM WebSourcing, 2012-2024 Linagora
#
# This program/library is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 2.1 of the License, or (at your
# option) any later version.
#
# This program/library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program/library; If not, see http://www.gnu.org/licenses/
# for the GNU Lesser General Public License version 2.1.
#
################################################################################
#
#                      Petals ESB Bootstrap Script
#
# Environment variables:
#
#	JAVA_HOME		Directory containing the JRE. Use the java executable
#					found in $PATH if not defined.
#
#	JAVA_OPTS		Options for the JVM. Try "java -h" to get informations
#					about the available options for your environment
#
#	PETALS_CLASSPATH	Extra classpath entries for the system classloader.
#				Careful because they will be visible by the whole JVM.
#
#############################################################################

# Set the path to the java executable
JAVA="$JAVA_HOME/bin/java"
[ -x "$JAVA" ] || JAVA="`which java`" || {
	echo "ERROR: java executable not found" >&2
	exit 1
}

PETALS_LIB_DIR="/usr/share/petals-esb"
PETALS_EXT_DIR="$PETALS_LIB_DIR/extensions"
PETALS_SYSEXT_DIR="$PETALS_LIB_DIR/system-extensions"

# Set the path to petals launcher jar
PETALS_LAUNCHER_PATTERN="petals-launcher-default-*.jar"
PETALS_LAUNCHER_ARTIFACT=$(ls -1 $PETALS_LIB_DIR/$PETALS_LAUNCHER_PATTERN 2>/dev/null)

# Check that the JAR is defined once
if [ -z "$PETALS_LAUNCHER_ARTIFACT" ]; then
   echo "ERROR: No Petals launcher found in directory '$PETALS_LIB_DIR'. Pattern was: $PETALS_LAUNCHER_PATTERN" >&2
   exit 1
fi

# And only once!
if [ "$(echo "$PETALS_LAUNCHER_ARTIFACT" | wc -l)" -ne 1 ]; then
   echo -e "ERROR: Several Petals launcher versions were found in $PETALS_LIB_DIR:\n$PETALS_LAUNCHER_ARTIFACT" >&2
   exit 1
fi

# classpath
PETALS_BOOTSTRAP_PATTERN="petals-bootstrap-launcher-*.jar"
PETALS_BOOTSTRAP_ARTIFACT="$(ls -1 $PETALS_LIB_DIR/$PETALS_BOOTSTRAP_PATTERN 2>/dev/null)"

# Check that the JAR is defined once
if [ -z "$PETALS_BOOTSTRAP_ARTIFACT" ]; then
   echo "ERROR: Petals Bootstrap Launcher not found in $PETALS_LIB_DIR. Pattern was: $PETALS_BOOTSTRAP_PATTERN" >&2
   exit 1
fi

# And only once!
if [ "$(echo "$PETALS_BOOTSTRAP_ARTIFACT" | wc -l)" -ne 1 ]; then
   echo -e "ERROR: Several Petals Bootstrap Launcher versions were found in $PETALS_LIB_DIR:\n$PETALS_BOOTSTRAP_ARTIFACT" >&2
   exit 1
fi

PETALS_CLASSPATH="$PETALS_BOOTSTRAP_ARTIFACT:$PETALS_SYSEXT_DIR:$PETALS_CLASSPATH"

# Petals options
PETALS_OPTS="-Dpetals.lib.dir=$PETALS_LIB_DIR -Dpetals.ext.dir=$PETALS_EXT_DIR"

# Petals arguments
PETALS_ARGS=""
HELP_FLAG=""
VERSION_FLAG=""
SERVER_PROPERTIES_URL=""
while getopts ':dehu:V' OPT; do
   case "$OPT" in
   d)
      DEBUG_OPTS="-agentlib:jdwp=transport=dt_socket,server=y,address=8000,suspend=y"
      ;;
   e)
      PETALS_ARGS="$PETALS_ARGS -e"
      ;;
   h) HELP_FLAG="yes"
      PETALS_ARGS="$PETALS_ARGS -h"
      ;;
   u) SERVER_PROPERTIES_URL="$OPTARG"
      PETALS_ARGS="$PETALS_ARGS -u $SERVER_PROPERTIES_URL"
      ;;
   V) VERSION_FLAG="yes"
      PETALS_ARGS="$PETALS_ARGS -V"
      ;;
   *) PETALS_ARGS="$PETALS_ARGS $OPT $OPTARG"
      ;;
   esac
done

PETALS_STOP_ASKED="false"
`echo "$@" | grep -qE "stop$"` && {
      PETALS_ARGS="$PETALS_ARGS stop"
      PETALS_STOP_ASKED="true"
}

[ ! -z "$HELP_FLAG" ] || [ ! -z "$VERSION_FLAG" ] || {
   # Retrieve the environment configuration
   if [ -z "$SERVER_PROPERTIES_URL" ]; then
      echo "Error: You must specify a container configuration URL using '-u <url>'." >&2
      exit 1
   fi
   LOCAL_SERVER_PROPERTIES="/tmp/petals-local-server.$$.properties"
   `curl -s $SERVER_PROPERTIES_URL > $LOCAL_SERVER_PROPERTIES`
   if [ $? -ne 0 ]; then
      echo "Error retrieving the local container configuration: $SERVER_PROPERTIES_URL" >&2
      exit 1;
   fi
   ENV_CFG_FILE=`sed "/^\#/d" $LOCAL_SERVER_PROPERTIES | grep "petals.environment.config.file" | cut -d "=" -f2- | sed "s/^[[:space:]]*//;s/[[:space:]]*$//"`
   rm -f $LOCAL_SERVER_PROPERTIES >&2
   if [ -z "$ENV_CFG_FILE" ]; then
      . /etc/petals-esb/default-env.sh
   else
      case "$ENV_CFG_FILE" in
         /*) # Absolute environment configuration file
             . $ENV_CFG_FILE
             ;;
         *) # Relative environment configuration file
             FILE_SCHEME=`echo $SERVER_PROPERTIES_URL | sed -e "s/^file:\/\/\(.*\)/\1/"`
             if [ -z $FILE_SCHEME ]; then
                 echo "Relative environment configuration file is authorized only for local url (ie. file://...)" >&2
                 exit 1;
             else
                 . `dirname $FILE_SCHEME`/$ENV_CFG_FILE
             fi
             ;;
      esac
   fi
}

# Start
exec "$JAVA" -classpath $PETALS_CLASSPATH $JAVA_OPTS $PETALS_OPTS $DEBUG_OPTS org.ow2.petals.BootstrapLauncher $PETALS_LAUNCHER_ARTIFACT $PETALS_ARGS