#!/bin/bash -p
# Name:     remoteNagiUp
# Author:   Richard Clark
# Purpose:  A post commit hook for subversion to remotely update nagios repositories
# Requires: SSH Keys + Sudo configuration allowing for passphraseless authentication

REPO="$1"
REV="$2"

# For post-commit hooks, no environment is setup so all commands must be full paths
SVNLOOK="/usr/bin/svnlook"
GREP="/bin/grep"
SSH="/usr/bin/ssh"
DATE="/bin/date"

echo "runnning `${DATE}`" >> /tmp/running

# Usernames
NSHELLUSER="nagsvn"

# SVN Credentials
SVNROUSER="theuser"
SVNROPASSWD="thepassword"

# Root of all repos
REPOROOT="/var/svn/nws"

BUILDSERVER="vm189.example.com"
MASTERSERVER="vm234.example.com"
# Add multiple slaves as needed
SLAVESERVER1="vm188.example.com"
ALLSERVERS=( "${BUILDSERVER}" "${MASTERSERVER}" "${SLAVESERVER1}" )
SLAVESERVERS=( "${SLAVESERVER1}" )

OBJECTSCOMMON="trunk/objects_common"

# First look to see if the common directory has been updated - if so, then update all servers
if ( ${SVNLOOK} dirs-changed -r ${REV} ${REPOROOT}/${REPO} | ${GREP} "^${OBJECTSCOMMON}" ); then
echo "about to start loop `${DATE}`" >> /tmp/running
    for server in ${ALLSERVERS[*]}; do
        # ssh -q to avoid banner interference
        echo "running commands on ${server} `${DATE}`" >> /tmp/running
        ${SSH} -q -l ${NSHELLUSER} ${server} -t "sudo svn up /etc/nagios/objects_common --username="${SVNROUSER}" --password="${SVNROPASSWD}"" || exit 1
    done
fi