Fix deadlock when updating notifications

This commit is contained in:
Omar Roth 2020-02-28 13:13:48 -05:00
parent 02fd02d482
commit 1caf6a3298
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@ -3402,8 +3402,8 @@ post "/feed/webhook/:token" do |env|
views: video.views, views: video.views,
) )
emails = PG_DB.query_all("UPDATE users SET notifications = array_append(notifications, $1) \ PG_DB.query_all("UPDATE users SET feed_needs_update = true, notifications = array_append(notifications, $1) \
WHERE updated < $2 AND $3 = ANY(subscriptions) AND $1 <> ALL(notifications) RETURNING email", WHERE updated < $2 AND $3 = ANY(subscriptions) AND $1 <> ALL(notifications)",
video.id, video.published, video.ucid, as: String) video.id, video.published, video.ucid, as: String)
video_array = video.to_a video_array = video.to_a
@ -3413,15 +3413,6 @@ post "/feed/webhook/:token" do |env|
ON CONFLICT (id) DO UPDATE SET title = $2, published = $3, \ ON CONFLICT (id) DO UPDATE SET title = $2, published = $3, \
updated = $4, ucid = $5, author = $6, length_seconds = $7, \ updated = $4, ucid = $5, author = $6, length_seconds = $7, \
live_now = $8, premiere_timestamp = $9, views = $10", args: video_array) live_now = $8, premiere_timestamp = $9, views = $10", args: video_array)
# Update all users affected by insert
if emails.empty?
values = "'{}'"
else
values = "VALUES #{emails.map { |email| %((E'#{email.gsub({'\'' => "\\'", '\\' => "\\\\"})}')) }.join(",")}"
end
PG_DB.exec("UPDATE users SET feed_needs_update = true WHERE email = ANY(#{values})")
end end
end end