add flask role

all.yml

@@ -1,28 +1,27 @@
 ---
 - hosts: lxd_host
   tags: container_install
-  roles:
+  roles: [lxd_host]
-    - lxd_host
 
 - hosts: haproxy
   tags: containers, haproxy
-  roles:
+  roles: [haproxy]
-    - haproxy
 
 - hosts:
     - dokuwiki
     - freshrss
     - gitweb
   tags: containers, webserver
-  roles:
+  roles: [webserver]
-    - webserver
 
 - hosts: freshrss
   tags: containers, freshrss
-  roles:
+  roles: [freshrss]
-    - freshrss
 
 - hosts: dokuwiki
   tags: containers, dokuwiki
-  roles:
+  roles: [dokuwiki]
-    - dokuwiki
+
+- hosts: gallery
+  tags: containers, gallery
+  roles: [flask]

roles/flask/tasks/main.yml

@@ -0,0 +1,54 @@
+---
+- name: install packages
+  apk:
+    name:
+    - lighttpd
+    - py3-flask
+    - py3-gunicorn
+    state: installed
+
+- vars:
+    web_user: lighttpd
+    web_group: lighttpd
+    docroot: /var/www/localhost/htdocs
+    flask_entry: app.py
+    lighttpd_conf: /etc/lighttpd/lighttpd.conf
+    proxy_port: 3031
+
+  block:
+    - name: add mod_proxy.conf include to lighttpd.conf
+      lineinfile:
+        path: "{{ lighttpd_conf }}"
+        line: 'include "mod_proxy.conf"'
+        insertafter: "{{ '# {{{ includes' }}"
+
+    - name: copy mod_proxy.conf template
+      template:
+        src: templates/mod_proxy.conf.j2
+        dest: /etc/lighttpd/mod_proxy.conf
+
+    - name: copy dummy app template
+      template:
+        src: "templates/{{ flask_entry }}.j2"
+        dest: "{{ docroot }}/{{ flask_entry }}"
+        mode: 0644
+        owner: "{{ web_user }}"
+        group: "{{ web_group }}"
+
+    - name: copy gunicorn-flask openrc init script
+      template:
+        src: "templates/flask_init.j2"
+        dest: "/etc/init.d/flask"
+        mode: 0755
+
+- name: start and enable custom flask service
+  service:
+    name: flask
+    enabled: yes
+    state: restarted
+
+- name: start and enable lighttpd service
+  service:
+    name: lighttpd
+    enabled: yes
+    state: restarted

roles/flask/templates/app.py.j2

@@ -0,0 +1,9 @@
+
+from flask import Flask
+app = Flask(__name__)
+
+@app.route("/{{ ansible_facts['hostname'] }}")
+@app.route("/{{ ansible_facts['hostname'] }}/")
+def hello_world():
+	return 'Hello World!'
+

roles/flask/templates/flask_init.j2

@@ -0,0 +1,8 @@
+#!/sbin/openrc-run
+
+command="/usr/bin/gunicorn"
+pidfile="/run/${RC_SVCNAME}.pid"
+command_args="-w 4 -b 127.0.0.1:{{ proxy_port }} --chdir {{ docroot }} \
+	-u {{ web_user }} -g {{ web_group }} app:app"
+command_args_background="--daemon -p ${pidfile}"
+

roles/flask/templates/mod_proxy.conf.j2

@@ -0,0 +1,9 @@
+
+server.modules += ("mod_proxy")
+$HTTP["url"] =~ "" {
+	proxy.server = ("" => ((
+		"host" => "127.0.0.1",
+		"port" => "{{ proxy_port }}"
+	)))
+}
+