Tomcat Instances and Hot Reload Nginx

create-instance.sh

#!/bin/bash

if [ $# -eq 0 ]
then
    echo "No release number version provided. Please give a release number (i.e: 1.4.9 or 1.4)"
    echo "Syntax:"
    echo "    $0 VERSION"
    exit -1
fi

REL_NAME=$1

RV=($(echo $REL_NAME | sed 's/\./\n/g'))
VER="${RV[0]}.${RV[1]}"
REV=${RV[2]}

REL_TP=snapshot
if [ -n "$REV" ]; then
    REL_TP=release
    REV=$(printf "%02d" $REV)
else
    REV=00
fi

function release {
    # random port
    #REL=$(shuf -i 1000-9000 -n 1)
    # fixed port using version
    R=$(echo "$VER.$REV" | sed 's/\.//g')
    #R=${R:1:${#R}-1}
    REL=$(printf "%04d" $R)

    echo "creating $REL_TP $REL_NAME ($VER rev:$REV) in port 5$REL..."

    TDIR=~/tomcat7/$REL_TP/$REL_NAME

    tomcat7-instance-create -p 5$REL -c 6$REL $TDIR

    cat <<EOT >> $TDIR/bin/setenv.sh
# overwrite settings from default file
if [ -f "/etc/default/tomcat7" ]; then
        . "/etc/default/tomcat7"
fi
EOT

    mkdir -p $TDIR/conf/Catalina/localhost
    cp /etc/tomcat7/Catalina/localhost/manager.xml $TDIR/conf/Catalina/localhost/
    cp ~/tomcat7/default/conf/tomcat-users.xml $TDIR/conf/
    cp -r ~/tomcat7/default/webapps/ROOT $TDIR/webapps/

    if [ "$REL_TP" == "release" ]
    then
        # updates nginx: Xcur.r.domain.app + Xprv.r.domain.app
        SPATH=~/tomcat7/conf
        FVV=$(echo $VER | sed 's/\.//g')
        CPATH=$SPATH/${FVV}cur.r.domain.app
        PPATH=$SPATH/${FVV}prv.r.domain.app

        # convert current to previous
        cp $CPATH $PPATH
        sed -i 's/cur/prv/' $CPATH

        # change new current to the new port
        sed -i "s/:5[0-9]*/:5$REL/" $CPATH

        # reload nginx
        sudo service restart reload
    fi

    # startup tomcat instance
    /bin/bash $TDIR/bin/startup.sh
}

read -r -p "Do you wish to create $REL_TP instance for $REL_NAME ($VER rev:$REV)? [y/N] " yn
case $yn in
    [Yy]) release;
        ;;
    *) exit;;
esac

docker create --name project-$VER.$REV \
    -v ~/tomcat7/conf/tomcat-users.xml:/usr/local/tomcat/conf/tomcat-users.xml \
    -v ~/tomcat7/conf/manager-web.xml:/usr/local/tomcat/webapps/manager/WEB-INF/web.xml \
    -p 5$REL:8080 tomcat:7-alpine