kick off an update when subscribing to a new feed

.gitignore

@@ -1,2 +1,4 @@
 *.css
 *.css.map
+*~
+.sass-cache

celeryconfig.py

@@ -7,7 +7,9 @@ CELERY_RESULT_SERIALIZER = 'json'
 CELERY_ACCEPT_CONTENT = ['json']
 CELERYBEAT_SCHEDULE = {
     'tick-every-5-minutes': {
-        'task': 'tasks.tick',
-        'schedule': datetime.timedelta(minutes=5),
+        'task': 'woodwind.tasks.tick',
+        'schedule': datetime.timedelta(seconds=30),
     }
 }
+# recommended to disable if not using -- introduces a lot of complexity
+CELERY_DISABLE_RATE_LIMITS = True

config.py.template

@@ -0,0 +1,6 @@
+import os
+
+
+class Config:
+    SECRET_KEY = 'super secret key'
+    SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.getcwd() + '/db.sqlite'

woodwind/tasks.py

@@ -1,30 +1,31 @@
-from woodwind.extensions import db
 from woodwind.models import Feed, Entry
-
+from config import Config
 import celery
-import requests
 import celery.utils.log
 import feedparser
 import mf2py
 import mf2util
-import requests
 import time
 import urllib.parse
 import datetime
+import sqlalchemy
+import sqlalchemy.orm
 
 UPDATE_INTERVAL = datetime.timedelta(hours=1)
 
-queue = celery.Celery('woodwind')
-queue.config_from_object('celeryconfig')
+app = celery.Celery('woodwind')
+app.config_from_object('celeryconfig')
 
 logger = celery.utils.log.get_task_logger(__name__)
+engine = sqlalchemy.create_engine(Config.SQLALCHEMY_DATABASE_URI)
+session = sqlalchemy.orm.Session(bind=engine)
 
 
-@queue.task
+@app.task
 def tick():
     now = datetime.datetime.utcnow()
     logger.debug('Tick {}'.format(now))
-    for feed in Feed.query.all():
+    for feed in session.query(Feed).all():
         logger.debug('Feed {} last checked {}'.format(
             feed, feed.last_checked))
         if (not feed.last_checked
@@ -32,9 +33,9 @@ def tick():
             update_feed.delay(feed.id)
 
 
-@queue.task
+@app.task
 def update_feed(feed_id):
-    feed = Feed.query.get(feed_id)
+    feed = session.query(Feed).get(feed_id)
     logger.info('Updating {}'.format(feed))
     new_entries = process_feed_for_new_entries(feed)
     for entry in new_entries:
@@ -55,7 +56,7 @@ def process_feed_for_new_entries(feed):
         feed.last_checked = now
         if result:
             feed.last_updated = now
-        db.session.commit()
+        session.commit()
 
 
 def process_xml_feed_for_new_entries(feed):
@@ -70,7 +71,7 @@ def process_xml_feed_for_new_entries(feed):
     default_author_photo = feed_props.get('logo')
 
     all_uids = [e.id or e.link for e in parsed.entries]
-    preexisting = set(row[0] for row in db.session.query(Entry.uid)
+    preexisting = set(row[0] for row in session.query(Entry.uid)
                       .filter(Entry.uid.in_(all_uids))
                       .filter(Entry.feed == feed))
 
@@ -118,8 +119,8 @@ def process_xml_feed_for_new_entries(feed):
             author_photo=default_author_photo
             or fallback_photo(feed.origin))
 
-        db.session.add(entry)
-        db.session.commit()
+        session.add(entry)
+        session.commit()
         yield entry
 
 
@@ -132,7 +133,7 @@ def process_html_feed_for_new_entries(feed):
     hfeed = parsed.get('entries', [])
 
     all_uids = [e.get('uid') or e.get('url') for e in hfeed]
-    preexisting = set(row[0] for row in db.session.query(Entry.uid)
+    preexisting = set(row[0] for row in session.query(Entry.uid)
                       .filter(Entry.uid.in_(all_uids))
                       .filter(Entry.feed == feed))
 
@@ -161,8 +162,8 @@ def process_html_feed_for_new_entries(feed):
             author_photo=hentry.get('author', {}).get('photo')
             or fallback_photo(feed.origin),
             author_url=hentry.get('author', {}).get('url'))
-        db.session.add(entry)
-        db.session.commit()
+        session.add(entry)
+        session.commit()
         logger.debug('saved entry: %s', entry.permalink)
         yield entry
 

woodwind/templates/subscribe.jinja2

@@ -1,7 +1,7 @@
 {% extends "base.jinja2" %}
 {% block body %}
   <main>
-    <form action="{{ url_for('subscribe') }}" method="POST">
+    <form method="POST">
       <input type="text" id="origin" name="origin" placeholder="Feed URL" />
       <button type="submit" id="subscribe">Subscribe</button>
     </form>

woodwind/views.py

@@ -15,6 +15,9 @@ ui = flask.Blueprint('ui', __name__)
 
 @ui.route('/')
 def index():
+    import os
+    print('cwd', os.getcwd(), 'db', db)
+
     if flask_login.current_user.is_authenticated():
         feed_ids = [f.id for f in flask_login.current_user.feeds]
         entries = Entry.query.filter(
@@ -149,28 +152,25 @@ def subscribe():
 
 
 def add_subscription(origin, feed, type):
+    feed = None
     if type == 'html':
         parsed = mf2util.interpret_feed(mf2py.parse(url=feed), feed)
         name = parsed.get('name')
         if not name or len(name) > 140:
             p = urllib.parse.urlparse(origin)
             name = p.netloc + p.path
-
         feed = Feed(user=flask_login.current_user, name=name,
                     origin=origin, feed=feed, type=type)
-
-        db.session.add(feed)
-        db.session.commit()
-        return feed
-
     elif type == 'xml':
         parsed = feedparser.parse(feed)
         feed = Feed(user=flask_login.current_user,
                     name=parsed.feed.title, origin=origin, feed=feed,
                     type=type)
-
+    if feed:
         db.session.add(feed)
         db.session.commit()
+        # go ahead and update the fed
+        tasks.update_feed.delay(feed.id)
         return feed