provision.sh - Means of provisioning a new tomcat instance.

provision.sh

#!/bin/bash
# ==================================================================
#  ______                           __     _____
# /_  __/___  ____ ___  _________ _/ /_   /__  /
#  / / / __ \/ __ `__ \/ ___/ __ `/ __/     / /
# / / / /_/ / / / / / / /__/ /_/ / /_      / /
#/_/  \____/_/ /_/ /_/\___/\__,_/\__/     /_/

# Multi-instance Apache Tomcat installation with a focus
# on best-practices as defined by Apache, SpringSource, and MuleSoft
# and enterprise use with large-scale deployments.

# Credits:
#       Google -> Couldn't survive without it
#       Stackoverflow.com -> Community support
#       SpringSource -> Specifically best-practices and seminars (Expert Series)

# Based On:
#       http://www.springsource.com/files/uploads/tomcat/tomcatx-performance-tuning.pdf
#       http://www.springsource.com/files/u1/PerformanceTuningApacheTomcat-Part2.pdf
#       http://www.springsource.com/files/uploads/tomcat/tomcatx-large-scale-deployments.pdf

# Created By: Terrance A. Snyder
# URL: http://www.terranceasnyder.com, http://shutupandcode.net

# Best Practice Documentation:
# http://terranceasnyder.com/2011/05/tomcat-best-practices/

# Looking for the latest version?
# github @ https://github.com/terrancesnyder

# ==================================================================

# Friendly Logo
logo()
{
        echo ""
        echo "  ______                           __     _____"
        echo " /_  __/___  ____ ___  _________ _/ /_   /__  /"
        echo "  / / / __ \/ __  __ \/ ___/ __  / __/     / / "
        echo " / / / /_/ / / / / / / /__/ /_/ / /_      / /  "
        echo "/_/  \____/_/ /_/ /_/\___/\__,_/\__/     /_/   "
        echo "                                               "
        echo "                                               "
}

# Help
usage()
{
        logo
        echo "Script creates or deletes a Tomcat 7 web instance by"
        echo "provisioning them from the shared/template folder."

        echo ""
        echo "usage:"
        echo "   $0 [create|delete] <port>"
        echo ""
        echo "examples:"
        echo "   $0 create 8080 -> Creates a new tomcat instance on port 8080"
        echo "   $0 delete 8080 -> Deletes the tomcat instance on port 8080"
        echo ""
        exit 1
}

# Ensure running as tomcat
if [ `whoami` != "tomcat" ]; then
        echo "error: you must be running as tomcat user"
        exit 0
fi

# Main
# if no arguments passed in
if [ $# -lt 1 ]; then
        usage
fi

if [ -z  "$1" -o -z "$2" ]; then
        usage
        exit 1
fi


IP="$( ifconfig eth0 | awk '/inet addr/ {split ($2,A,":"); print A[2]}' )"
HTTP_PORT=$2

# standard variables
SCRIPT=$(readlink -f $0)
DIRECTORY=`dirname $SCRIPT`

# ask for tomcat version
export CATALINA_BASE="$DIRECTORY/$HTTP_PORT"

case $1 in
        create)
                if [ -d "$CATALINA_BASE" ]; then
                        echo "error: the defined port is already claimed"
                        exit 1
                fi

                logo
                echo "[Step 1 of 2]: Creating new instance '$CATALINA_BASE'..."
                cp -R $DIRECTORY/shared/template $DIRECTORY/$HTTP_PORT
                sleep 2

                echo "[Step 2 of 2]: Starting tomcat instance '$CATALINA_BASE'..."
                $DIRECTORY/run.sh $HTTP_PORT start > /dev/null 2>&1
                sleep 2

                echo "[Done]: Your tomcat instance is available via http://$IP:$HTTP_PORT/..."

                exit 0
        ;;
        delete)
                if [ ! -d "$CATALINA_BASE" ]; then
                        echo "error: that port does not exist to delete"
                        exit 1
                fi

                logo
                echo "Removing tomcat instance '$CATALINA_BASE'"
                echo -n "Are you sure? [Y/n]: "
                read -e CONFIRM

                case $CONFIRM in
                        [yY]*)
                                echo "Step [1 of 3]: Ensuring instance $HTTP_PORT is shutdown..."
                                $DIRECTORY/run.sh $HTTP_PORT stop > /dev/null 2>&1
                                sleep 5
                                echo "Step [2 of 3]: Ensuring no orphaned tomcat instances are running..."
                                ps aux | grep $DIRECTORY/$HTTP_PORT | grep -v grep | awk '{print $2}' | xargs kill -9 > /dev/null 2>&1
                                sleep 2
                                echo "Step [3 of 3]: Removing instance from file system..."
                                rm -rf $CATALINA_BASE
                                echo "(done)"
                                exit 0
                                ;;
                        [nN]*)
                                exit "(aborted)"
                                ;;
                        *)
                                echo "(aborted)"
                                ;;
                esac
        ;;
esac
exit 0