From: Dessalines Date: Sat, 10 Oct 2020 04:03:38 +0000 (-0500) Subject: Fixing hot_rank_active fast triggers. Fixes #1190 X-Git-Url: http://these/git/%7B%60%24%7BwebArchiveUrl%7D/save/%24%7Bargs.pageFn.jump%20n%7D?a=commitdiff_plain;h=a903cae00bef44e065fb193ff0121ab546da8464;p=lemmy.git Fixing hot_rank_active fast triggers. Fixes #1190 --- diff --git a/migrations/2020-10-10-035723_fix_fast_triggers_2/down.sql b/migrations/2020-10-10-035723_fix_fast_triggers_2/down.sql new file mode 100644 index 00000000..d05418f5 --- /dev/null +++ b/migrations/2020-10-10-035723_fix_fast_triggers_2/down.sql @@ -0,0 +1,79 @@ +create or replace function refresh_post() +returns trigger language plpgsql +as $$ +begin + IF (TG_OP = 'DELETE') THEN + delete from post_aggregates_fast where id = OLD.id; + + -- Update community number of posts + update community_aggregates_fast set number_of_posts = number_of_posts - 1 where id = OLD.community_id; + ELSIF (TG_OP = 'UPDATE') THEN + delete from post_aggregates_fast where id = OLD.id; + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id on conflict (id) do nothing; + + ELSIF (TG_OP = 'INSERT') THEN + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id; + + -- Update that users number of posts, post score + delete from user_fast where id = NEW.creator_id; + insert into user_fast select * from user_view where id = NEW.creator_id on conflict (id) do nothing; + + -- Update community number of posts + update community_aggregates_fast set number_of_posts = number_of_posts + 1 where id = NEW.community_id; + + -- Update the hot rank on the post table + -- TODO this might not correctly update it, using a 1 week interval + update post_aggregates_fast as paf + set hot_rank = pav.hot_rank + from post_aggregates_view as pav + where paf.id = pav.id and (pav.published > ('now'::timestamp - '1 week'::interval)); + END IF; + + return null; +end $$; + + +create or replace function refresh_comment() +returns trigger language plpgsql +as $$ +begin + IF (TG_OP = 'DELETE') THEN + delete from comment_aggregates_fast where id = OLD.id; + + -- Update community number of comments + update community_aggregates_fast as caf + set number_of_comments = number_of_comments - 1 + from post as p + where caf.id = p.community_id and p.id = OLD.post_id; + + ELSIF (TG_OP = 'UPDATE') THEN + delete from comment_aggregates_fast where id = OLD.id; + insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id on conflict (id) do nothing; + ELSIF (TG_OP = 'INSERT') THEN + insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id; + + -- Update user view due to comment count + update user_fast + set number_of_comments = number_of_comments + 1 + where id = NEW.creator_id; + + -- Update post view due to comment count, new comment activity time, but only on new posts + -- TODO this could be done more efficiently + delete from post_aggregates_fast where id = NEW.post_id; + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.post_id on conflict (id) do nothing; + + -- Force the hot rank as zero on week-older posts + update post_aggregates_fast as paf + set hot_rank = 0 + where paf.id = NEW.post_id and (paf.published < ('now'::timestamp - '1 week'::interval)); + + -- Update community number of comments + update community_aggregates_fast as caf + set number_of_comments = number_of_comments + 1 + from post as p + where caf.id = p.community_id and p.id = NEW.post_id; + + END IF; + + return null; +end $$; diff --git a/migrations/2020-10-10-035723_fix_fast_triggers_2/up.sql b/migrations/2020-10-10-035723_fix_fast_triggers_2/up.sql new file mode 100644 index 00000000..64a5dccb --- /dev/null +++ b/migrations/2020-10-10-035723_fix_fast_triggers_2/up.sql @@ -0,0 +1,97 @@ +-- Forgot to add hot rank active to these two triggers + +create or replace function refresh_post() +returns trigger language plpgsql +as $$ +begin + IF (TG_OP = 'DELETE') THEN + delete from post_aggregates_fast where id = OLD.id; + + -- Update community number of posts + update community_aggregates_fast set number_of_posts = number_of_posts - 1 where id = OLD.community_id; + ELSIF (TG_OP = 'UPDATE') THEN + delete from post_aggregates_fast where id = OLD.id; + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id on conflict (id) do nothing; + ELSIF (TG_OP = 'INSERT') THEN + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id; + + -- Update that users number of posts, post score + delete from user_fast where id = NEW.creator_id; + insert into user_fast select * from user_view where id = NEW.creator_id on conflict (id) do nothing; + + -- Update community number of posts + update community_aggregates_fast set number_of_posts = number_of_posts + 1 where id = NEW.community_id; + + -- Update the hot rank on the post table + -- TODO this might not correctly update it, using a 1 week interval + update post_aggregates_fast as paf + set + hot_rank = pav.hot_rank, + hot_rank_active = pav.hot_rank_active + from post_aggregates_view as pav + where paf.id = pav.id and (pav.published > ('now'::timestamp - '1 week'::interval)); + END IF; + + return null; +end $$; + +create or replace function refresh_comment() +returns trigger language plpgsql +as $$ +begin + IF (TG_OP = 'DELETE') THEN + delete from comment_aggregates_fast where id = OLD.id; + + -- Update community number of comments + update community_aggregates_fast as caf + set number_of_comments = number_of_comments - 1 + from post as p + where caf.id = p.community_id and p.id = OLD.post_id; + + ELSIF (TG_OP = 'UPDATE') THEN + delete from comment_aggregates_fast where id = OLD.id; + insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id on conflict (id) do nothing; + ELSIF (TG_OP = 'INSERT') THEN + insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id; + + -- Update user view due to comment count + update user_fast + set number_of_comments = number_of_comments + 1 + where id = NEW.creator_id; + + -- Update post view due to comment count, new comment activity time, but only on new posts + -- TODO this could be done more efficiently + delete from post_aggregates_fast where id = NEW.post_id; + insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.post_id on conflict (id) do nothing; + + -- Update the comment hot_ranks as of last week + update comment_aggregates_fast as caf + set + hot_rank = cav.hot_rank, + hot_rank_active = cav.hot_rank_active + from comment_aggregates_view as cav + where caf.id = cav.id and (cav.published > ('now'::timestamp - '1 week'::interval)); + + -- Update the post ranks + update post_aggregates_fast as paf + set + hot_rank = pav.hot_rank, + hot_rank_active = pav.hot_rank_active + from post_aggregates_view as pav + where paf.id = pav.id and (pav.published > ('now'::timestamp - '1 week'::interval)); + + -- Force the hot rank active as zero on 2 day-older posts (necro-bump) + update post_aggregates_fast as paf + set hot_rank_active = 0 + where paf.id = NEW.post_id and (paf.published < ('now'::timestamp - '2 days'::interval)); + + -- Update community number of comments + update community_aggregates_fast as caf + set number_of_comments = number_of_comments + 1 + from post as p + where caf.id = p.community_id and p.id = NEW.post_id; + + END IF; + + return null; +end $$;