updated python version, converted to the flask cli, added rq dashboard

.python-version

@@ -1 +1 @@
-3.6.1
+3.6.4

Dockerfile

@@ -1,4 +1,5 @@
-FROM python:3.6.1
+# base image
+FROM python:3.6.4-alpine
 
 # set working directory
 RUN mkdir -p /usr/src/app
@@ -8,4 +9,4 @@ WORKDIR /usr/src/app
 ADD ./requirements.txt /usr/src/app/requirements.txt
 
 # install requirements
-RUN pip install -r requirements.txt
+RUN pip install -r requirements.txt

LICENSE

@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright (c) 2017 Michael Herman
+Copyright (c) 2018 Michael Herman
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

README.md

@@ -11,7 +11,3 @@ $ docker-compose up -d
 ```
 
 Open your browser to http://localhost:5001
-
-### Example
-
-![](app.png)

docker-compose.yml

@@ -1,31 +1,39 @@
-version: '2.1'
+version: '3.5'
 
 services:
 
   web:
     build: .
     image: web
     container_name: web
-    environment:
-      - APP_SETTINGS=project.server.config.DevelopmentConfig
     ports:
       - '5001:5000'
-    command: python manage.py runserver -h 0.0.0.0
+    command: python manage.py run -h 0.0.0.0
     volumes:
       - .:/usr/src/app
+    environment:
+      - FLASK_DEBUG=1
+      - APP_SETTINGS=project.server.config.DevelopmentConfig
     depends_on:
       - redis
 
   worker:
     image: web
-    container_name: worker
-    environment:
-      - APP_SETTINGS=project.server.config.DevelopmentConfig
     command: python manage.py run_worker
     volumes:
       - .:/usr/src/app
+    environment:
+      - APP_SETTINGS=project.server.config.DevelopmentConfig
     depends_on:
       - redis
 
   redis:
     image: redis:3.2.11
+
+  dashboard:
+    build: ./project/dashboard
+    image: dashboard
+    container_name: dashboard
+    ports:
+      - '9181:9181'
+    command: rq-dashboard -H redis

manage.py

@@ -1,20 +1,20 @@
 # manage.py
 
 
-import os
 import unittest
 
 import redis
 from rq import Connection, Worker
-from flask_script import Manager
+from flask.cli import FlaskGroup
 
-from project.server import app
+from project.server import create_app
 
 
-manager = Manager(app)
+app = create_app()
+cli = FlaskGroup(create_app=create_app)
 
 
-@manager.command
+@cli.command()
 def test():
     """Runs the unit tests without test coverage."""
     tests = unittest.TestLoader().discover('project/tests', pattern='test*.py')
@@ -24,13 +24,14 @@ def test():
     return 1
 
 
-@manager.command
+@cli.command()
 def run_worker():
     redis_url = app.config['REDIS_URL']
     redis_connection = redis.from_url(redis_url)
     with Connection(redis_connection):
         worker = Worker(app.config['QUEUES'])
         worker.work()
 
+
 if __name__ == '__main__':
-    manager.run()
+    cli()

project/client/static/main.js

@@ -15,8 +15,8 @@ $('.btn').on('click', function() {
   })
   .fail((err) => {
     console.log(err)
-  })
-})
+  });
+});
 
 function getStatus(taskID) {
   $.ajax({
@@ -30,7 +30,7 @@ function getStatus(taskID) {
         <td>${res.data.task_status}</td>
         <td>${res.data.task_result}</td>
       </tr>`
-    $('#tasks').prepend(html)
+    $('#tasks').prepend(html);
     const taskStatus = res.data.task_status;
     if (taskStatus === 'finished' || taskStatus === 'failed') return false;
     setTimeout(function() {
@@ -39,6 +39,5 @@ function getStatus(taskID) {
   })
   .fail((err) => {
     console.log(err)
-  })
+  });
 }
-

project/client/templates/_base.html

@@ -9,7 +9,7 @@
     <meta name="author" content="">
     <meta name="viewport" content="width=device-width,initial-scale=1">
     <!-- styles -->
-    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css">
+    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
     <link href="{{url_for('static', filename='main.css')}}" rel="stylesheet" media="screen">
     {% block css %}{% endblock %}
   </head>
@@ -25,8 +25,8 @@
 
     <!-- scripts -->
     <script src="//code.jquery.com/jquery-3.2.1.min.js"></script>
-    <script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"></script>
-    <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>
+    <script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
+    <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
     <script src="{{url_for('static', filename='main.js')}}" type="text/javascript"></script>
     {% block js %}{% endblock %}
 

project/dashboard/Dockerfile

@@ -0,0 +1,7 @@
+FROM python:3.6.4-alpine
+
+RUN pip install rq-dashboard
+
+EXPOSE 9181
+
+CMD ["rq-dashboard"]

project/server/__init__.py

@@ -7,18 +7,31 @@
 from flask_bootstrap import Bootstrap
 
 
-app = Flask(
-    __name__,
-    template_folder='../client/templates',
-    static_folder='../client/static'
-)
+# instantiate the extensions
+bootstrap = Bootstrap()
 
 
-app_settings = os.getenv('APP_SETTINGS', 'project.server.config.DevelopmentConfig')
-app.config.from_object(app_settings)
+def create_app(script_info=None):
 
-bootstrap = Bootstrap(app)
+    # instantiate the app
+    app = Flask(
+        __name__,
+        template_folder='../client/templates',
+        static_folder='../client/static'
+    )
 
+    # set config
+    app_settings = os.getenv('APP_SETTINGS')
+    app.config.from_object(app_settings)
 
-from project.server.main.views import main_blueprint
-app.register_blueprint(main_blueprint)
+    # set up extensions
+    bootstrap.init_app(app)
+
+    # register blueprints
+    from project.server.main.views import main_blueprint
+    app.register_blueprint(main_blueprint)
+
+    # shell context for flask cli
+    app.shell_context_processor({'app': app})
+
+    return app

project/server/config.py

@@ -6,25 +6,18 @@
 
 class BaseConfig(object):
     """Base configuration."""
-    DEBUG = False
     WTF_CSRF_ENABLED = True
     REDIS_URL = 'redis://redis:6379/0'
     QUEUES = ['default']
 
+
 class DevelopmentConfig(BaseConfig):
     """Development configuration."""
-    DEBUG = True
     WTF_CSRF_ENABLED = False
 
 
 class TestingConfig(BaseConfig):
     """Testing configuration."""
-    DEBUG = True
     TESTING = True
     WTF_CSRF_ENABLED = False
     PRESERVE_CONTEXT_ON_EXCEPTION = False
-
-
-class ProductionConfig(BaseConfig):
-    """Production configuration."""
-    DEBUG = False

project/server/main/tasks.py

@@ -6,4 +6,4 @@
 
 def create_task(task_type):
     time.sleep(int(task_type) * 10)
-    return True
+    return True

project/server/main/views.py

@@ -2,11 +2,13 @@
 
 
 import redis
-from rq import Queue, push_connection, pop_connection
-from flask import current_app, render_template, Blueprint, jsonify, request
+from rq import Queue, Connection
+from flask import render_template, Blueprint, jsonify, \
+    request, current_app
 
 from project.server.main.tasks import create_task
 
+
 main_blueprint = Blueprint('main', __name__,)
 
 
@@ -18,8 +20,9 @@ def home():
 @main_blueprint.route('/tasks', methods=['POST'])
 def run_task():
     task_type = request.form['type']
-    q = Queue()
-    task = q.enqueue(create_task, task_type)
+    with Connection(redis.from_url(current_app.config['REDIS_URL'])):
+        q = Queue()
+        task = q.enqueue(create_task, task_type)
     response_object = {
         'status': 'success',
         'data': {
@@ -31,8 +34,9 @@ def run_task():
 
 @main_blueprint.route('/tasks/<task_id>', methods=['GET'])
 def get_status(task_id):
-    q = Queue()
-    task = q.fetch_job(task_id)
+    with Connection(redis.from_url(current_app.config['REDIS_URL'])):
+        q = Queue()
+        task = q.fetch_job(task_id)
     if task:
         response_object = {
             'status': 'success',
@@ -41,17 +45,7 @@ def get_status(task_id):
                 'task_status': task.get_status(),
                 'task_result': task.result,
             }
-        }        
+        }
     else:
         response_object = {'status': 'error'}
     return jsonify(response_object)
-
-
-@main_blueprint.before_request
-def push_rq_connection():
-    push_connection(redis.from_url(current_app.config['REDIS_URL']))
-
-
-@main_blueprint.teardown_request
-def pop_rq_connection(exception=None):
-    pop_connection()

project/tests/base.py

@@ -3,7 +3,9 @@
 
 from flask_testing import TestCase
 
-from project.server import app
+from project.server import create_app
+
+app = create_app()
 
 
 class BaseTestCase(TestCase):

project/tests/test__config.py

@@ -1,12 +1,14 @@
-# project/server/tests/test_config.py
+# project/server/tests/test__config.py
 
 
 import unittest
 
 from flask import current_app
 from flask_testing import TestCase
 
-from project.server import app
+from project.server import create_app
+
+app = create_app()
 
 
 class TestDevelopmentConfig(TestCase):
@@ -34,17 +36,5 @@ def test_app_is_testing(self):
         self.assertTrue(app.config['WTF_CSRF_ENABLED'] is False)
 
 
-class TestProductionConfig(TestCase):
-
-    def create_app(self):
-        app.config.from_object('project.server.config.ProductionConfig')
-        return app
-
-    def test_app_is_production(self):
-        self.assertFalse(current_app.config['TESTING'])
-        self.assertTrue(app.config['DEBUG'] is False)
-        self.assertTrue(app.config['WTF_CSRF_ENABLED'] is True)
-
-
 if __name__ == '__main__':
     unittest.main()

requirements.txt

@@ -4,4 +4,4 @@ Flask-Script==2.0.6
 Flask-Testing==0.6.2
 Flask-WTF==0.14.2
 redis==2.10.6
-rq==0.8.2
+rq==0.10.0