Added roles

examples/roles/demo_app/README.md

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+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

examples/roles/demo_app/defaults/main.yml

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+#SPDX-License-Identifier: MIT-0
+---
+# defaults file for demo_app

examples/roles/demo_app/files/demo/app/demo.py

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+from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+import os, socket
+
+app = Flask(__name__)
+app.config['SQLALCHEMY_DATABASE_URI'] = os.environ['DATABASE_URI']
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
+db = SQLAlchemy(app)
+hostname = socket.gethostname()
+
+@app.route('/')
+def index():
+  return 'Hello, from sunny %s!\n' % hostname
+
+@app.route('/db')
+def dbtest():
+  return 'Database Connected from %s!\n' % hostname
+
+if __name__ == '__main__':
+  app.run()

examples/roles/demo_app/files/demo/app/demo.wsgi

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+activate_this = '/var/www/demo/.venv/bin/activate_this.py'
+exec(open(activate_this).read(), {'__file__': activate_this})
+
+import os
+os.environ['DATABASE_URI'] = 'mysql://demo:demo@db01/demo'
+
+import sys
+sys.path.insert(0, '/var/www/demo')
+
+from demo import app as application

examples/roles/demo_app/files/demo/app/requirements.txt

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+click==7.1.2
+Flask==1.1.4
+Flask-SQLAlchemy==2.5.1
+greenlet
+itsdangerous==1.1.0
+Jinja2==2.11.3
+MarkupSafe==2.0.1
+SQLAlchemy==1.4.32
+Werkzeug==1.0.1

examples/roles/demo_app/files/demo/demo.conf

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+<VirtualHost *>
+    WSGIDaemonProcess demo threads=5
+    WSGIScriptAlias / /var/www/demo/demo.wsgi
+
+    <Directory /var/www/demo>
+        WSGIProcessGroup demo
+        WSGIApplicationGroup %{GLOBAL}
+        Order deny,allow
+        Allow from all
+    </Directory>
+</VirtualHost>

examples/roles/demo_app/handlers/main.yml

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+#SPDX-License-Identifier: MIT-0
+---
+# handlers file for demo_app
+- name: restart apache2
+  service: name=apache2 state=restarted

examples/roles/demo_app/meta/main.yml

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+#SPDX-License-Identifier: MIT-0
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.1
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.

examples/roles/demo_app/tasks/main.yml

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+#SPDX-License-Identifier: MIT-0
+---
+# tasks file for demo_app
+- name: install web components
+  apt: name={{item}} state=present update_cache=yes
+  with_items:
+    - python3-pip-whl
+    - python3-virtualenv
+    - python3-mysqldb
+
+- name: copy demo app source
+  copy: src=files/demo/app/ dest=/var/www/demo mode=0755
+  notify: restart apache2
+
+- name: change ownership of demo app
+  file: path=/var/www/demo owner=www-data group=www-data recurse=yes
+  notify: restart apache2
+
+- name: copy apache virtual host config
+  copy: src=files/demo/demo.conf dest=/etc/apache2/sites-available mode=0755
+  notify: restart apache2
+
+- name: create virtualenv
+  command: python3 -m venv /var/www/demo/.venv
+  args:
+    creates: /var/www/demo/.venv/bin/activate
+
+- name: source activate virtualenv
+  shell: source /var/www/demo/.venv/bin/activate
+  args:
+    executable: /bin/bash
+
+- name: pip install upgrade pip
+  shell: /var/www/demo/.venv/bin/pip install --upgrade pip
+
+- name: pip install requirements
+  shell: /var/www/demo/.venv/bin/pip install -r /var/www/demo/requirements.txt
+
+- name: activate demo apache site
+  file: src=/etc/apache2/sites-available/demo.conf dest=/etc/apache2/sites-enabled/demo.conf state=link
+  notify: restart apache2

examples/roles/demo_app/tests/inventory

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+#SPDX-License-Identifier: MIT-0
+localhost
+

examples/roles/demo_app/tests/test.yml

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+#SPDX-License-Identifier: MIT-0
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - demo_app

examples/roles/demo_app/vars/main.yml

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+#SPDX-License-Identifier: MIT-0
+---
+# vars file for demo_app