devstack/lib/apache
zhang-hare d98a5d0a58 enable apache2 server as front end for swift
1.install apache and wsgi module
2.config apache2 vhost and wsgi files for proxy,
account, container and object server.
3.refactor apache functions from horizon and swift
into lib/apache

Change-Id: I3a5d1e511c5dca1e6d01a1adca8fda0a43d4f632
Implements: blueprint enable-apache-frontend-for-swift
2013-07-29 11:15:21 +08:00

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# lib/apache
# Functions to control configuration and operation of apache web server
# Dependencies:
# ``functions`` file
# is_apache_enabled_service
# change_apache_user_group
# install_apache_wsgi
# config_apache_wsgi
# start_apache_server
# stop_apache_server
# restart_apache_server
# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace
# Allow overriding the default Apache user and group, default to
# current user and his default group.
APACHE_USER=${APACHE_USER:-$USER}
APACHE_GROUP=${APACHE_GROUP:-$(id -gn $APACHE_USER)}
# Set up apache name and configuration directory
if is_ubuntu; then
APACHE_NAME=apache2
APACHE_CONF_DIR=sites-available
elif is_fedora; then
APACHE_NAME=httpd
APACHE_CONF_DIR=conf.d
elif is_suse; then
APACHE_NAME=apache2
APACHE_CONF_DIR=vhosts.d
fi
# Functions
# ---------
# is_apache_enabled_service() checks if the service(s) specified as arguments are
# apache enabled by the user in ``APACHE_ENABLED_SERVICES`` as web front end.
#
# Multiple services specified as arguments are ``OR``'ed together; the test
# is a short-circuit boolean, i.e it returns on the first match.
#
# Uses global ``APACHE_ENABLED_SERVICES``
# APACHE_ENABLED_SERVICES service [service ...]
function is_apache_enabled_service() {
services=$@
for service in ${services}; do
[[ ,${APACHE_ENABLED_SERVICES}, =~ ,${service}, ]] && return 0
done
return 1
}
# change_apache_user_group() - Change the User/Group to run Apache server
function change_apache_user_group(){
local stack_user=$@
if is_ubuntu; then
sudo sed -e "
s/^export APACHE_RUN_USER=.*/export APACHE_RUN_USER=${stack_user}/g;
s/^export APACHE_RUN_GROUP=.*/export APACHE_RUN_GROUP=${stack_user}/g
" -i /etc/${APACHE_NAME}/envvars
elif is_fedora; then
sudo sed -e "
s/^User .*/User ${stack_user}/g;
s/^Group .*/Group ${stack_user}/g
" -i /etc/${APACHE_NAME}/httpd.conf
elif is_suse; then
sudo sed -e "
s/^User .*/User ${stack_user}/g;
s/^Group .*/Group ${stack_user}/g
" -i /etc/${APACHE_NAME}/uid.conf
else
exit_distro_not_supported "apache user and group"
fi
}
# install_apache_wsgi() - Install Apache server and wsgi module
function install_apache_wsgi() {
# Apache installation, because we mark it NOPRIME
if is_ubuntu; then
# Install apache2, which is NOPRIME'd
install_package apache2 libapache2-mod-wsgi
elif is_fedora; then
sudo rm -f /etc/httpd/conf.d/000-*
install_package httpd mod_wsgi
elif is_suse; then
install_package apache2 apache2-mod_wsgi
else
exit_distro_not_supported "apache installation"
fi
}
# start_apache_server() - Start running apache server
function start_apache_server() {
start_service $APACHE_NAME
}
# stop_apache_server() - Stop running apache server
function stop_apache_server() {
if [ -n "$APACHE_NAME" ]; then
stop_service $APACHE_NAME
else
exit_distro_not_supported "apache configuration"
fi
}
# restart_apache_server
function restart_apache_server() {
restart_service $APACHE_NAME
}
# Restore xtrace
$XTRACE
# Local variables:
# mode: shell-script
# End: