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• Db relation changed

#!/bin/bash

set -eu # -x for verbose logging to juju debug-log

UPLOAD_PATH="/var/www/wp-uploads"

hostname=`unit-get public-address`
juju-log "Retrieved hostname: $hostname"

# Check we haven't already been setup.
config_file_path="/etc/wordpress/config-$hostname.php"
if [ -f "$config_file_path" ] ; then
    juju-log "Wordpress for site $config_file_path already Configured, exiting"
    echo "Already Configured, Exiting"
    exit 0 # already setup
fi

# Get the database settings; if not set, wait for this hook to be
# invoked again
database=`relation-get database`
if [ -z "$database" ] ; then
    exit 0 # wait for future handshake from database service unit
fi

# Our protocol on this interface ensures that all or none of the
# settings are set. But we can verify the setting or the values if
# more error checking if desired.
user=`relation-get user`
password=`relation-get password`
host=`relation-get private-address`

# Create an internal secret key for wordpress; this is unrelated to
# the password generated for the admin user of wordpress
secret_key=`pwgen 10 1`

juju-log "Creating appropriate upload paths and directories"
# Setup appropriate upload paths and directories
ln -s /usr/share/wordpress "/var/www/$hostname"
mkdir -p $UPLOAD_PATH
mkdir -p "$UPLOAD_PATH/$hostname"
chown -R root:www-data $UPLOAD_PATH
chmod 0744 $UPLOAD_PATH
chmod 0770 "$UPLOAD_PATH/$hostname"
chown -R root:www-data "/var/www/$hostname/wp-content"

juju-log "Writing wordpress config file $config_file_path"
# Write the wordpress config
cat > $config_file_path <<EOF
<?php
define('DB_NAME', '$database');
define('DB_USER', '$user');
define('DB_PASSWORD', '$password');
define('DB_HOST', '$host');
define('SECRET_KEY', '$secret_key');

#This will disable the update notification.
define('WP_CORE_UPDATE', false);

\$table_prefix  = 'wp_';
\$server = '$host';
\$loginsql = '$user';
\$passsql = '$password';
\$base = '$database';
\$upload_path = '/var/www/wp-uploads/$hostname';
\$upload_url_path = 'http://$hostname/wp-uploads';
?>
EOF
chmod 0644 $config_file_path

# Write the apache config
# XXX a future branch will change this to use augtool
apache_config_file_path="/etc/apache2/sites-available/$hostname"
juju-log "Writing apache config file $apache_config_file_path"
cat > $apache_config_file_path <<EOF
<VirtualHost *:80>
  ServerName $hostname
  DocumentRoot /var/www/$hostname
  Options All
  ErrorLog /var/log/apache2/wp-error.log
  TransferLog /var/log/apache2/wp-access.log
  # Store uploads in /var/www/wp-uploads/$0
  RewriteEngine On
  RewriteRule ^/wp-uploads/(.*)$ /var/www/wp-uploads/%%{HTTP_HOST}/\$1
</VirtualHost>
EOF
chmod 0644 $apache_config_file_path

# Configure apache
juju-log "Enabling apache modules: rewrite, vhost_alias"
a2enmod rewrite
a2enmod vhost_alias
juju-log "Enabling apache site: $hostname"
a2ensite $hostname

# Restart apache
juju-log "Restarting apache2 service"
/etc/init.d/apache2 restart

# Make it publicly visible, once the wordpress service is exposed
open-port 80/tcp