+ execute """
+ ALTER TABLE #{table}
+ ALTER COLUMN user_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(user_id), 32, '0' ) AS uuid),
+ ADD CONSTRAINT #{table}_user_id_fkey FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE;
+ """
+ end
+
+ flush()
+
+ stop_clippy_heartbeats(clippy)
+ end
+
+ def down, do: :ok
+
+ defp start_clippy_heartbeats() do
+ count = from(a in "activities", select: count(a.id)) |> Repo.one!
+
+ if count > 5000 do
+ heartbeat_interval = :timer.minutes(2) + :timer.seconds(30)
+ all_tips = Clippy.tips() ++ [
+ "The migration is still running, maybe it's time for another “tea”?",
+ "Happy rabbits practice a cute behavior known as a\n“binky:” they jump up in the air\nand twist\nand spin around!",
+ "Nothing and everything.\n\nI still work.",
+ "Pleroma runs on a Raspberry Pi!\n\n … but this migration will take forever if you\nactually run on a raspberry pi",
+ "Status? Stati? Post? Note? Toot?\nRepeat? Reboost? Boost? Retweet? Retoot??\n\nI-I'm confused.",
+ ]
+
+ heartbeat = fn(heartbeat, runs, all_tips, tips) ->
+ tips = if Integer.is_even(runs) do
+ tips = if tips == [], do: all_tips, else: tips
+ [tip | tips] = Enum.shuffle(tips)
+ Clippy.puts(tip)
+ tips
+ else
+ IO.puts "\n -- #{DateTime.to_string(DateTime.utc_now())} Migration still running, please wait…\n"
+ tips
+ end
+ :timer.sleep(heartbeat_interval)
+ heartbeat.(heartbeat, runs + 1, all_tips, tips)
+ end
+
+ Clippy.puts [
+ [:red, :bright, "It looks like you are running an older instance!"],
+ [""],
+ [:bright, "This migration may take a long time", :reset, " -- so you probably should"],
+ ["go drink a cofe, or a tea, or a beer, a whiskey, a vodka,"],
+ ["while it runs to deal with your temporary fediverse pause!"]
+ ]
+ :timer.sleep(heartbeat_interval)
+ spawn_link(fn() -> heartbeat.(heartbeat, 1, all_tips, []) end)