Automatically build maven projects on file change.

autobuild-mvn.sh

#!/bin/bash

# Jostein Austvik Jacobsen © 2013
#
# Before using:
#   To increase your inotify watch limit,
#   see: http://monodevelop.com/Inotify_watches_limit
#   and for more info: http://askubuntu.com/questions/154255/how-can-i-tell-if-i-am-out-of-inotify-watches
#   I have the limit set to 524288 as described in the last link and it works great.
#
# Usage:
#   Go to the root directory of all the maven projects you want to monitor, then run this script.
#   The script will automatically build the project that has changed, but not projects that depend on it.

function buildPom {
	if [ "$1" = "" ]; then
		echo "pom was not found"
		return
	fi

	if [ -f "$1/pom.xml" ]; then
		cd "$1" && mvn install
	else
		buildPom "`echo $1 | sed s/\\\\/[^/]*$//`"
	fi
}

while true; do
    change=$(inotifywait -e close_write,moved_to,create -r . --exclude target)
    change=${change#./ * }
    file=( $change )
    buildPom "$file"
done