You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
162 lines
4.6 KiB
162 lines
4.6 KiB
import logging |
|
logging.basicConfig( |
|
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', |
|
level=logging.INFO) |
|
|
|
import copy |
|
import threading |
|
import time |
|
import shelve |
|
from urllib.parse import urlparse |
|
|
|
import archive |
|
import feed |
|
from utils import gen_rand_id |
|
|
|
from flask import abort, Flask, request, render_template |
|
from werkzeug.exceptions import NotFound |
|
from flask_cors import CORS |
|
|
|
archive.init() |
|
|
|
CACHE_LENGTH = 300 |
|
DATA_FILE = 'data/data' |
|
|
|
news_index = 0 |
|
|
|
with shelve.open(DATA_FILE) as db: |
|
logging.info('Reading caches from disk...') |
|
news_list = db.get('news_list', []) |
|
news_ref_to_id = db.get('news_ref_to_id', {}) |
|
news_cache = db.get('news_cache', {}) |
|
|
|
def get_story(sid): |
|
if sid in news_cache: |
|
return news_cache[sid] |
|
else: |
|
return archive.get_story(sid) |
|
|
|
build_folder = '../webclient/build' |
|
flask_app = Flask(__name__, template_folder=build_folder, static_folder=build_folder, static_url_path='') |
|
cors = CORS(flask_app) |
|
|
|
@flask_app.route('/api') |
|
def api(): |
|
front_page = [news_cache[news_ref_to_id[ref]] for ref in news_list] |
|
front_page = [copy.copy(x) for x in front_page if 'title' in x and x['title']] |
|
front_page = front_page[:100] |
|
for story in front_page: |
|
story.pop('text', None) |
|
story.pop('comments', None) |
|
|
|
return {'stories': front_page} |
|
|
|
@flask_app.route('/api/search', strict_slashes=False) |
|
def search(): |
|
search = request.args.get('q', '') |
|
if len(search) >= 3: |
|
res = archive.search(search) |
|
else: |
|
res = [] |
|
return {'results': res} |
|
|
|
@flask_app.route('/api/<sid>') |
|
def story(sid): |
|
story = get_story(sid) |
|
return dict(story=story) if story else abort(404) |
|
|
|
@flask_app.route('/') |
|
@flask_app.route('/search') |
|
def index(): |
|
return render_template('index.html', |
|
title='Feed', |
|
url='news.t0.vc', |
|
description='Reddit, Hacker News, and Tildes combined, then pre-rendered in reader mode') |
|
|
|
@flask_app.route('/<sid>', strict_slashes=False) |
|
@flask_app.route('/<sid>/c', strict_slashes=False) |
|
def static_story(sid): |
|
try: |
|
return flask_app.send_static_file(sid) |
|
except NotFound: |
|
pass |
|
|
|
story = get_story(sid) |
|
if not story: return abort(404) |
|
|
|
score = story['score'] |
|
num_comments = story['num_comments'] |
|
source = story['source'] |
|
description = '{} point{}, {} comment{} on {}'.format( |
|
score, 's' if score != 1 else '', |
|
num_comments, 's' if num_comments != 1 else '', |
|
source) |
|
url = urlparse(story['url']).hostname.replace('www.', '') |
|
|
|
return render_template('index.html', |
|
title=story['title'], |
|
url=url, |
|
description=description) |
|
|
|
print('Starting Flask...') |
|
web_thread = threading.Thread(target=flask_app.run, kwargs={'port': 33842}) |
|
web_thread.setDaemon(True) |
|
web_thread.start() |
|
|
|
def new_id(): |
|
nid = gen_rand_id() |
|
while nid in news_cache or archive.get_story(nid): |
|
nid = gen_rand_id() |
|
return nid |
|
|
|
def remove_ref(old_ref): |
|
while old_ref in news_list: |
|
news_list.remove(old_ref) |
|
old_story = news_cache.pop(news_ref_to_id[old_ref]) |
|
old_id = news_ref_to_id.pop(old_ref) |
|
logging.info('Removed ref {} id {}.'.format(old_ref, old_id)) |
|
|
|
try: |
|
while True: |
|
# onboard new stories |
|
if news_index == 0: |
|
feed_list = feed.list() |
|
new_items = [(ref, source) for ref, source in feed_list if ref not in news_list] |
|
for ref, source in new_items: |
|
news_list.insert(0, ref) |
|
nid = new_id() |
|
news_ref_to_id[ref] = nid |
|
news_cache[nid] = dict(id=nid, ref=ref, source=source) |
|
|
|
if len(new_items): |
|
logging.info('Added {} new refs.'.format(len(new_items))) |
|
|
|
# drop old ones |
|
while len(news_list) > CACHE_LENGTH: |
|
old_ref = news_list[-1] |
|
remove_ref(old_ref) |
|
|
|
# update current stories |
|
if news_index < len(news_list): |
|
update_ref = news_list[news_index] |
|
update_id = news_ref_to_id[update_ref] |
|
news_story = news_cache[update_id] |
|
valid = feed.update_story(news_story) |
|
if valid: |
|
archive.update(news_story) |
|
else: |
|
remove_ref(update_ref) |
|
|
|
time.sleep(3) |
|
|
|
news_index += 1 |
|
if news_index == CACHE_LENGTH: news_index = 0 |
|
|
|
except KeyboardInterrupt: |
|
logging.info('Exiting...') |
|
finally: |
|
with shelve.open(DATA_FILE) as db: |
|
logging.info('Writing caches to disk...') |
|
db['news_list'] = news_list |
|
db['news_ref_to_id'] = news_ref_to_id |
|
db['news_cache'] = news_cache
|
|
|