As an installer user, plugin snippets will by symlinked

fixes: #6213

roles/pulp-webserver/files/check_snippet.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+# Checks if the pulp plugin has a specific webserver snippet.
+
+# Usage: check_snippet.py plugin_name snippet_file
+
+# Usage example: check_snippet.py pulp_ansible nginx.conf
+
+# Prints full path to the snippet to stdout and returns rc 0 if found.
+# Prints to stderr and returns rc 10 if there are snippets, but not the snippet.
+# Prints to stderr and rc 1 if plugin is not found.
+
+import os
+import importlib
+import sys
+webserver_snippets = importlib.import_module(sys.argv[1] + ".app.webserver_snippets")
+snippet = os.path.dirname(webserver_snippets.__file__) + "/" + sys.argv[2]
+if os.path.exists(snippet):
+  print(snippet)
+else:
+  sys.stderr.write(sys.argv[1] + " has snippets, but not " + sys.argv[2] + "\n")
+  sys.exit(10)

roles/pulp-webserver/tasks/apache.yml

@@ -28,6 +28,34 @@
         dest: /etc/httpd/conf.d/pulp-vhost.conf
       notify: reload Apache
 
+    - name: Create directory for Pulp Apache snippets
+      file:
+        path: /etc/httpd/pulp
+        state: directory
+
+    - name: Check installed plugins for Apache snippets
+      script:
+        cmd: check_snippet.py {{ item.key | regex_replace("pulp-", "pulp_") | quote }} apache.conf
+      args:
+        executable: /usr/local/lib/pulp/bin/python
+      register: snippets
+      with_dict: '{{ pulp_install_plugins }}'
+      failed_when: false
+      changed_when: false
+
+    # FIXME: The ansible output here over the results is very ugly.
+    # It may be a lot cleaner if we were to use the command module,
+    # above and/or create a temporary data structure.
+    - name: Symlink Apache snippets
+      file:
+        src: "{{ item.stdout_lines | last }}"
+        # Note: item.item is pulp_install_plugins
+        dest: "/etc/httpd/pulp/{{ item.item.key | regex_replace('pulp-', 'pulp_') }}"
+        state: link
+      loop: '{{ snippets.results }}'
+      when: item.rc == 0
+      notify: reload Apache
+
     - name: Start and enable Apache
       systemd:
         name: "{{ pulp_webserver_apache_service }}"

roles/pulp-webserver/tasks/nginx.yml

@@ -36,6 +36,29 @@
         dest: /etc/nginx/nginx.conf
       notify: reload nginx
 
+    - name: Check installed plugins for nginx snippets
+      script:
+        cmd: check_snippet.py {{ item.key | regex_replace("pulp-", "pulp_") | quote }} nginx.conf
+      args:
+        executable: /usr/local/lib/pulp/bin/python
+      register: snippets
+      with_dict: '{{ pulp_install_plugins }}'
+      failed_when: false
+      changed_when: false
+
+    # FIXME: The ansible output here over the results is very ugly.
+    # It may be a lot cleaner if we were to use the command module,
+    # above and/or create a temporary data structure.
+    - name: Symlink nginx snippets
+      file:
+        src: "{{ item.stdout_lines | last }}"
+        # Note: item.item is pulp_install_plugins
+        dest: "/etc/nginx/conf.d/{{ item.item.key | regex_replace('pulp-', 'pulp_') }}"
+        state: link
+      loop: '{{ snippets.results }}'
+      when: item.rc == 0
+      notify: reload nginx
+
     - name: Start and enable Nginx
       systemd:
         name: nginx