add server
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parent
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commit
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json/*
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__pycache__/
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118
re.py
118
re.py
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'''
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Reccomendation Engine Example
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'''
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import json
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import os
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import random
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import ox
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class Pandora:
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def __init__(self, url, username, password):
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self.api = ox.API(url)
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self.api.signin(username=username, password=password)
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def find_annotations(self, query, keys):
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# print('FIND ANNOTATIONS', query, keys)
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return self.api.findAnnotations({
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'keys': keys,
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'query': query,
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'range': [0, 1000000]
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})['data']['items']
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def find_entities(self, query, keys):
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# print('FIND ENTITIES', query, keys)
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return self.api.findEntities({
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'keys': keys,
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'query': query,
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'range': [0, 1000000]
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})['data']['items']
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def get(self, id, keys):
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# print('GET', id, keys)
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return self.api.get({
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'id': id,
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'keys': keys
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})['data']
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class Engine:
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def __init__(self, path):
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self.path = path
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self.pandora = Pandora(
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url='http://pandora.dmp/api/',
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username='dd.re',
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password='dd.re'
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)
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def _shift_clips(self, clips):
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index = random.randrange(len(clips))
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return clips[index:] + clips[:index - 1]
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def get_videos(self, user):
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products = []
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for event in user['events']:
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if 'product' in event['data']:
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products.append(event['data']['product'])
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def update(self):
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# Get all storylines with tags
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storylines = [{
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'name': entity['name'],
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'tags': entity['tags']
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} for entity in self.pandora.find_entities({
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'conditions': [
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{'key': 'type', 'operator': '==', 'value': 'storylines'},
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],
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'operator': '&'
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}, ['id', 'name', 'tags']) if entity.get('tags', [])]
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# Get list of storyline names
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names = list(set([storyline['name'] for storyline in storylines]))
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# Get all clips annotated with storyline references
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clips = [clip for clip in self.pandora.find_annotations({
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'conditions': [
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{'key': 'layer', 'operator': '==', 'value': 'storylines'}
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],
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'operator': '&'
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}, ['id', 'in', 'out', 'value']) if clip['value'] in names]
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# Get list of ids for videos with clips
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ids = list(set([clip['id'].split('/')[0] for clip in clips]))
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# Get (and cache) order (and code + name) for each video
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filename = os.path.join(self.path, 'videos.json')
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if os.path.exists(filename):
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with open(filename) as f:
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videos_ = json.loads(f.read())
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ids_ = [video['id'] for video in videos_]
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else:
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videos_, ids_ = [], []
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videos = sorted(videos_ + [
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self.pandora.get(id, ['code', 'id', 'order', 'title'])
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for id in ids if not id in ids_
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], key=lambda video: video['order'])
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with open(filename, 'w') as f:
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f.write(json.dumps(videos, indent=4, sort_keys=True))
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order = {video['id']: video['order'] for video in videos}
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# Sort clips
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clips = sorted(
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clips,
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key=lambda clip: order[clip['id'].split('/')[0]] * 1000000 + clip['in']
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)
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# Get playlists
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playlists = [playlist for playlist in [{
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'name': storyline['name'],
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'tags': storyline['tags'],
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'clips': [
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'{}_{:.3f}-{:.3f}'.format(
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clip['id'].split('/')[0], clip['in'], clip['out']
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) for clip in clips if clip['value'] == storyline['name']
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]
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} for storyline in storylines] if playlist['clips']]
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with open(os.path.join(self.path, 'playlists.json'), 'w') as f:
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f.write(json.dumps(playlists, indent=4, sort_keys=True))
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if __name__ == '__main__':
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engine = Engine('json')
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engine.update()
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@ -0,0 +1,113 @@
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#!/usr/bin/python3
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import json
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import logging
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import os
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import time
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from urllib.parse import unquote
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from tornado.httpserver import HTTPServer
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from tornado.ioloop import IOLoop, PeriodicCallback
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from tornado.web import StaticFileHandler, Application, HTTPError
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import tornado.gen
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import tornado.web
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from recommendation_engine import Engine
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from utils import json_dumps, run_async
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BANNER_PUBLIC = 'DD recommondation engine'
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BANNER = '%s - use POST at / to access JSON-RPC 2.0 endpoint' % BANNER_PUBLIC
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logger = logging.getLogger(__name__)
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@run_async
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def api_task(request, engine, callback):
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try:
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if request['method'] == 'getVideos':
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result = engine.get_videos(request['params'])
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else:
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result = {}
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response = {
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'result': result
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}
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except:
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logger.error('api failed: %s', request, exc_info=True)
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response = {'error': {'code': -32000, 'message': 'Server error'}}
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callback(response)
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class RPCHandler(tornado.web.RequestHandler):
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def initialize(self, engine):
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self.engine = engine
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def get(self):
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self.write(BANNER)
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@tornado.gen.coroutine
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def post(self):
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error = None
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request = None
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try:
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request = json.loads(self.request.body.decode())
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if request['method'] not in ('getVideos', ):
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raise Exception('unknown method')
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except:
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error = {'error': {'code': -32700, 'message': 'Parse error'}}
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if not error:
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try:
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response = yield tornado.gen.Task(api_task, request, self.engine)
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except:
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logger.error("ERROR: %s", request, exc_info=True)
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error = {'error': {'code': -32000, 'message': 'Server error'}}
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if error:
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response = error
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if request and 'id' in request:
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response['id'] = request['id']
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response['jsonrpc'] = '2.0'
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response = json_dumps(response)
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self.write(response)
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def main(prefix='json/'):
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settings = {
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'debug': False,
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'port': 8081,
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'address': ''
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}
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engine = Engine(prefix)
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handlers = [
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(r'/', RPCHandler, dict(engine=engine)),
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]
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options = {
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'debug': settings['debug'],
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'gzip': True,
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}
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if settings['debug']:
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log_format = '%(asctime)s:%(levelname)s:%(name)s:%(message)s'
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logging.basicConfig(level=logging.DEBUG, format=log_format)
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app = Application(handlers, **options)
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app.listen(settings['port'], settings['address'])
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main = IOLoop.instance()
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@run_async
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def update():
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engine.update()
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update_cb = PeriodicCallback(update, 60000)
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#main.spawn_callback(update, engine)
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#fixme run periodically
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try:
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main.start()
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except:
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print('shutting down...')
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if __name__ == '__main__':
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main()
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@ -0,0 +1,24 @@
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import json
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from functools import wraps
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from threading import Thread
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def json_dumps(obj):
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return json.dumps(obj, indent=4, default=_to_json, ensure_ascii=False, sort_keys=True).encode()
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def _to_json(python_object):
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if isinstance(python_object, datetime.datetime):
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if python_object.year < 1900:
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tt = python_object.timetuple()
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return '%d-%02d-%02dT%02d:%02d%02dZ' % tuple(list(tt)[:6])
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return python_object.strftime('%Y-%m-%dT%H:%M:%SZ')
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raise TypeError('%s %s is not JSON serializable' % (repr(python_object), type(python_object)))
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def run_async(func):
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@wraps(func)
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def async_func(*args, **kwargs):
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func_hl = Thread(target=func, args=args, kwargs=kwargs)
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func_hl.start()
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return func_hl
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return async_func
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