Add support to deploy manila-api with Apache/wsgi

- Add required packages to run the manila-api service
  with Apache/mod_wsgi, the mod_ssl package has been
  added for RHEL/centos/oraclelinux only.
- Add necessary cleanup to the start script of the container.
- Add directories and configuration files that can be
  optionally used via Docker entrypoints.

Change-Id: Id88760655b3419e7b6bec012ebfda16fb92e5ea3
Implements: bp apache-packages-for-manila-api

docker/manila/manila-api/Dockerfile.j2

@@ -6,19 +6,62 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {% import "macros.j2" as macros with context %}
 
 {% if install_type == 'binary' %}
-    {% if base_distro in ['debian', 'ubuntu'] %}
-
+    {% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
         {% set manila_api_packages = [
+                'httpd',
+                'mod_ssl',
+                'mod_wsgi'
+        ] %}
+{{ macros.install_packages(manila_api_packages | customizable("packages")) }}
+RUN mkdir -p /var/www/cgi-bin/manila \
+    && cp -a /usr/bin/manila-wsgi /var/www/cgi-bin/manila/manila-wsgi \
+    && sed -i -r 's,^(Listen 80),#\1,' /etc/httpd/conf/httpd.conf \
+    && sed -i -r 's,^(Listen 443),#\1,' /etc/httpd/conf.d/ssl.conf
+
+    {% elif base_distro in ['debian', 'ubuntu'] %}
+        {% set manila_api_packages = [
+                'apache2',
+                'libapache2-mod-wsgi',
                 'manila-api'
         ] %}
-
 {{ macros.install_packages(manila_api_packages | customizable("packages")) }}
+RUN mkdir -p /var/www/cgi-bin/manila \
+    && cp -a /usr/bin/manila-wsgi /var/www/cgi-bin/manila/manila-wsgi \
+    && echo > /etc/apache2/ports.conf
+    {% endif %}
 
-    {% endif%}
-{% endif%}
+
+{% elif install_type == 'source' %}
+
+    {% if base_distro in ['centos', 'oraclelinux', 'rhel'] %}
+        {% set manila_api_packages = [
+                'httpd',
+                'mod_ssl',
+                'mod_wsgi'
+        ] %}
+{{ macros.install_packages(manila_api_packages | customizable("packages")) }}
+RUN sed -i -r 's,^(Listen 80),#\1,' /etc/httpd/conf/httpd.conf \
+    && sed -i -r 's,^(Listen 443),#\1,' /etc/httpd/conf.d/ssl.conf
+
+    {% elif base_distro in ['debian', 'ubuntu'] %}
+        {% set manila_api_packages = [
+                'apache2',
+                'libapache2-mod-wsgi'
+        ] %}
+{{ macros.install_packages(manila_api_packages | customizable("packages")) }}
+RUN echo > /etc/apache2/ports.conf
+
+    {% endif %}
+
+RUN mkdir -p /var/www/cgi-bin/manila \
+    && cp -a /var/lib/kolla/venv/bin/manila-wsgi /var/www/cgi-bin/manila/manila-wsgi
+
+{% endif %}
 
 COPY extend_start.sh /usr/local/bin/kolla_manila_extend_start
-RUN chmod 755 /usr/local/bin/kolla_manila_extend_start
+RUN chmod 755 /usr/local/bin/kolla_manila_extend_start \
+    && chown -R manila: /var/www/cgi-bin/manila \
+    && chmod 755 /var/www/cgi-bin/manila/manila-wsgi
 
 {% block manila_api_footer %}{% endblock %}
 {% block footer %}{% endblock %}

docker/manila/manila-api/extend_start.sh

@@ -7,3 +7,16 @@ if [[ "${!KOLLA_BOOTSTRAP[@]}" ]]; then
     manila-manage db sync
     exit 0
 fi
+
+# Assume the service runs on top of Apache when user is root
+if [[ "$(whoami)" == 'root' ]]; then
+    # NOTE(pbourke): httpd will not clean up after itself in some cases which
+    # results in the container not being able to restart. (bug #1489676, 1557036)
+    if [[ "${KOLLA_BASE_DISTRO}" =~ debian|ubuntu ]]; then
+        # Loading Apache2 ENV variables
+        . /etc/apache2/envvars
+        rm -rf /var/run/apache2/*
+    else
+        rm -rf /var/run/httpd/* /run/httpd/* /tmp/httpd*
+    fi
+fi

releasenotes/notes/add-manila-api-httpd-packages-and-conf-1bea1364037cd64e.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    The manila-api dockerfile now contains support for httpd and mod_wsgi
+    packages for all supported platforms. It also contains the mod_ssl
+    package for RHEL/centos and oraclelinux. Docker entrypoints can now use
+    the httpd configuration seeded to run the manila-api service with
+    httpd/mod_wsgi.