making do_subscribe a celery task, messages to user updates

app/admin/forms.py

@@ -51,10 +51,12 @@ class FederationForm(FlaskForm):
     blocked_actors = TextAreaField(_l('Discard all posts and comments by users with these words in their name (one per line)'))
     submit = SubmitField(_l('Save'))
 
+
 class PreLoadCommunitiesForm(FlaskForm):
-    communities_num = IntegerField(_l('Number of Communities to add'))
+    communities_num = IntegerField(_l('Number of Communities to add'), default=25)
     pre_load_submit = SubmitField(_l('Add Communities'))
 
+
 class EditCommunityForm(FlaskForm):
     title = StringField(_l('Title'), validators=[DataRequired()])
     url = StringField(_l('Url'), validators=[DataRequired()])

app/admin/routes.py

@@ -283,19 +283,22 @@ def admin_federation():
         for c in community_urls_to_join:
             # get the relevant url bits 
             server, community = extract_domain_and_actor(c)
-            # message = {'server': server, 'community': community}
             # find the community
             new_community = search_for_community('!' + community + '@' + server)
-            # message = {'server': server, 'community': community, 'new_community': new_community}
-            # subscribe to the community
-            # since this is using the alt_user_name, capture the messages
-            # returned by do_subscibe as well
-            message = do_subscribe(new_community.ap_id, main_user_name=False)
-            pre_load_messages.append(message)
+            # subscribe to the community using alt_profile
+            # capture the messages returned by do_subscibe
+            # and show to user if instance is in debug mode
+            if current_app.debug:
+                message = do_subscribe(new_community.ap_id, main_user_name=False)
+                pre_load_messages.append(message)
+            else:
+                message_we_wont_do_anything_with = do_subscribe.delay(new_community.ap_id, main_user_name=False)
 
+        if current_app.debug:
+            flash(_(f'Results: {pre_load_messages}'))
+        else:
+            flash(_('Subscription process launched to background, check admin/activities for details'))
 
-        # flash(_(f'community_urls_to_join == {community_urls_to_join}')) # testing
-        flash(_(f'Results: {pre_load_messages}'))
         return redirect(url_for('admin.admin_federation'))
     
     # this is the main settings form
@@ -334,7 +337,7 @@ def admin_federation():
         form.blocked_actors.data = get_setting('actor_blocked_words', '88')
 
     return render_template('admin/federation.html', title=_('Federation settings'), 
-                           form=form, preload_form=preload_form,
+                           form=form, preload_form=preload_form, current_app_debug=current_app.debug,
                            moderating_communities=moderating_communities(current_user.get_id()),
                            joined_communities=joined_communities(current_user.get_id()),
                            menu_topics=menu_topics(),

app/community/routes.py

@@ -10,7 +10,7 @@ from flask_babel import _
 from slugify import slugify
 from sqlalchemy import or_, desc, text
 
-from app import db, constants, cache
+from app import db, constants, cache, celery
 from app.activitypub.signature import RsaKeys, post_request, default_context, post_request_in_background
 from app.activitypub.util import notify_about_post, make_image_sizes, resolve_remote_post, extract_domain_and_actor
 from app.chat.util import send_message
@@ -394,6 +394,7 @@ def subscribe(actor):
 
 # this is separated out from the route, so it can be used by the 
 # admin.admin_federation.preload_form as well
+@celery.task
 def do_subscribe(actor, main_user_name=True):
     remote = False
     actor = actor.strip()
@@ -457,6 +458,13 @@ def do_subscribe(actor, main_user_name=True):
                     flash('You joined ' + community.title)
                 else:
                     pre_load_message['status'] = 'joined'
+        else:
+            if main_user_name:
+                # user already subscribed or pending and its not the preload request
+                pass
+            else:
+                pre_load_message['status'] = 'already subscribed, or subsciption pending'
+
         referrer = request.headers.get('Referer', None)
         cache.delete_memoized(community_membership, current_user, community)
         cache.delete_memoized(joined_communities, current_user.id)

app/templates/admin/federation.html

@@ -17,7 +17,10 @@
 <hr />
 <div class="row">
     <div class="column">
-        <p>Use this to "pre-load" the top 50 known threadiverse communities, as rnaked by posts and activity. The list of communities pulls from the same list as <a href="https://lemmyverse.net/communities">LemmyVerse</a>. NSFW communities and communities from banned instances are excluded.</p>
+        <p>Use this to "pre-load" known threadiverse communities, as ranked by posts and activity. The list of communities pulls from the same list as <a href="https://lemmyverse.net/communities">LemmyVerse</a>. NSFW communities and communities from banned instances are excluded.</p>
+        {% if current_app_debug %}
+        <p>*** This instance is in development mode. Loading more than 6 communities here could cause timeouts, depending on how your networking is setup. ***</p>
+        {% endif %}
         {{ render_form(preload_form) }}
     </div>
 </div>