hot-patch.sh

#!/bin/bash

patch=$1
is_real=false

function show_helper
{
    echo "usage: hot-patch.sh patch-file-path [real] servers"
    echo "eg: hot-patch.sh some-patch.clj real rtm51:11111 rtm52:11111 rtm53:11111"
    echo "note: without the \"real\" option, only the first server in servers list will be patched"
}

if [ $# -lt 2 ]; then
    show_helper
    exit
fi

if [ ! -f "$patch" ]; then
   echo -e "$patch does not exists!\n"
   show_helper 
   exit
fi

shift
while [ "$1" != "" ]; do
    case $1 in
        real )  is_real=true
                ;;    
        * )     echo "Start patch on $1 ..." 
                cat $patch | lein repl :connect $1
                echo "$1 is patched"
                if [ "$is_real" != true ]; then
                    exit
                fi  
    esac
    shift
done