Embed Size (px)
Citation preview
MOOC: Python and Web as Architecture
Rizky Ariestiyansyah Python Conference Malaysia 2016
Hi!Mozilla Tech Speaker CTO at IndonesiaX (Indonesia’s Premier E-learning Platform) 22 Years old feel like TEEN!
What is MOOC?
MOOC
Massive
Student number can be 100.000+
Open Online Course
Study any course, anywhere at any time
Blended course Learning units in an academic subject, life skill.
MOOC with Python Stack
Why Python?
- Minimal Setup
- Hierarchical Module System
- Available Libraries
@app.route('/')
def home():
courses_list = courses.list_courses()
return render_template('index.html', courses_list =
courses_list)
app.py
@app.route('/course/<course_id>')
def course(course_id=None):
course_lecs = lectures[course_id]
args = {
'course_id': course_id,
'course_name': course_map[course_id],
'lectures': course_lecs,
}
return render_template('course.html', args = args);
app.py
@app.route('/course/<course_id>/<int:lec_no>')
def player(course_id, lec_no):
args = {
'course_name': course_map[course_id],
'course_id': course_id,
'lec_no': lec_no,
'lec_path': lectures[course_id][lec_no],
'total_lectures': len(lectures[course_id]),
}
return render_template('player.html', args = args)
app.py
def lectures():
lectures = dict()
for course_id in course_map:
exts = ['mp4', 'webm', 'ogg']
vid_files = []
for ext in exts:
search_exp = 'static/courses/%s/*.%s' % (course_id, ext)
vid_files.extend(glob(search_exp))
vid_files = sorted(vid_files)
course_lecs = dict((n+1, str(x)) for n,x in
enumerate(vid_files))
lectures[course_id] = course_lecs
return lectures
course.py
def list_courses():
courses = []
for course_path in glob('static/courses/*'):
course_id = os.path.basename(course_path)
courses.append((course_id,
course_map[course_id]))
return courses
course.py
<body>
<h1 id='brand' style="text-align:center;">PyMOOC</h1>
<h3 id='tagline' style="text-align:center;">Simple MOOC Platform</
h3> <p>Welcome to <b>PyMOOC</b></p>
<h2>Courses</h2>
<ol>
{% for course_id, course_name in courses_list %}
<li><a href='{{ url_for('course',
course_id=course_id) }}'>{{ course_name }}</a></li>
{% endfor %}
</ol>
index.html
<body>
<h1 id='course_name'>{{ args["course_name"] }}</h1>
<h3>Lectures</h3>
<ul id='lectures'>
{% for lec_no in args["lectures"] %}
<li><a href='{{ url_for('player', course_id =
args["course_id"], lec_no = lec_no) }}'>
Lecture {{ lec_no }}
</a></li>
{% endfor %}
</ul>
</body>
course.html
<body>
<h3 style="text-align:center;">Lecture {{ args["lec_no"] }}</h3>
<h2 style="text-align:center;">{{ args["course_name"] }}</h2>
<div id='player'>
<video width='100%' src='/{{ args["lec_path"] }}' controls autoplay>
</video>
<div id='controls'>
{% if args["lec_no"] > 1 %}
<a href='{{ url_for("player", course_id = args["course_id"], lec_no = args["lec_no"] -
1) }}' class='navbutton' id='prev_button'>← Previous</a>
{% endif %}
{% if args["lec_no"] < args["total_lectures"] %}
<a href='{{ url_for("player", course_id = args["course_id"], lec_no = args["lec_no"] +
1) }}' class='navbutton' id='next_button'>→ Next</a>
{% endif %}
</div>
</body>
player.html
Extend the Architecture
Architecture
Focus: MySQL
Company
Process Username Port Function
mysqld mysql 3306 Database
● DB for: user profile, course enrollment, certificate
● Authentication and Autorization data as well
Focus: MongoDB
Company● Easy to scale ● Storing course data ● NoSQL DB Backend
Process Username Port Function
mongodb mongo 27017 Database
Focus: Memcached
Company● High speed distributed key-value (KV) store for object caching
● Cache user session, course structure info, ect..
Process Username Port Function
memcached memcache 11211 KV store
Focus: Nginx
Company● Web Server. ● Provided proxied. ● Load Balanced access to static and
dynamic assets. ● Stateless and horizontally scalable.
Process Username Worker Port Function
nginx www-data 4 80 Course
nginx www-data 4 8010 Course Manager
Focus: Gunicorn
Company● Dynamic worker management. ● Stateless and horizontally scalable.
Process Username Worker Port Function
gunicorn
www-data 4 8000 Course
gunicorn
www-data 4 8010 Course Manager
Focus: RabbitMQ
Company● Large jobs are run through queue. ● Coordinated by celery ● It is a software where queues can be
defined, applications may connect to the queue and transfer a message onto it.
Process Username Port Function
beam.smp rabbitmq * :5672 Message Queue
beam.smp rabbitmq 15672 Message Queue
epmd rabbitmq 4369 Port Mapper
Extend with WEB
WebGL
WebRTC
WebSockets
SVG
MathML
MathML
WebVTTWEBVTT
00:01.000 --> 00:04.000
Original posting to alt.sources.
00:05.000 --> 00:09.000
- Micro changes only
- Added file "patchlevel.h"
WebVR
Final
MOOC Python Web
Thank You!Rizky Ariestiyansyah
See You!
