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#!/bin/bash
# Hook for handling config changes.
set -eux # -x for verbose logging to juju debug-log
# config_file is changed via juju like:
# juju set buildbot-master config-file=`uuencode master.cfg`
BUILDBOT_DIR=`config-get installdir`
juju-log "--> config-changed"
juju-log "Updating buildbot configuration."
CONFIG_FILE=`config-get config-file`
CONFIG_TRANSPORT=`config-get config-transport`
CONFIG_URL=`config-get config-url`
#
if [[ -n $CONFIG_FILE ]]; then
echo "$CONFIG_FILE" | uudecode -o "$BUILDBOT_DIR"/master.cfg
juju-log "Config decoded and written."
elif [ "$CONFIG_TRANSPORT" == "bzr" ] && [[ -n $CONFIG_URL ]]; then
# If the branch is private then more setup needs to be done. The
# gpg-agent needs to send the key over and the bzr launchpad-login
# needs to be set.
LP_ID=`config-get config-user`
if [[ -n $LP_ID ]]; then
bzr launchpad-login $LP_ID
fi
PKEY=`config-get config-private-key`
if [[ -n $PKEY ]]; then
# Set up the .ssh directory.
mkdir ~/.ssh
chmod 700 ~/.ssh
echo "$PKEY" | uudecode -o ~/.ssh/lp_key
fi
bzr branch --use-existing-dir $CONFIG_URL "$BUILDBOT_DIR"
chown -R ubuntu:ubuntu "$BUILDBOT_DIR"
fi
# Restart buildbot if it is running.
PIDFILE="$BUILDBOT_DIR"/twistd.pid
if [ -f $PIDFILE ]; then
BUILDBOT_PID=`cat $PIDFILE`
if kill -0 $BUILDBOT_PID; then
# Buildbot is running, reconfigure it.
juju-log "Reconfiguring buildbot"
buildbot reconfig "$BUILDBOT_DIR"
juju-log "Buildbot reconfigured"
fi
fi
juju-log "<-- config-changed"
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