defmodule Pleroma.Repo.Migrations.UsersAndActivitiesFlakeId do
use Ecto.Migration
+ alias Pleroma.Clippy
+ require Integer
+ import Ecto.Query
+ alias Pleroma.Repo
# This migrates from int serial IDs to custom Flake:
# 1- create a temporary uuid column
# 4- update relation pkeys with the new ids
# 5- rename the temporary column to id
# 6- re-create the constraints
- def change do
+ def up do
# Old serial int ids are transformed to 128bits with extra padding.
# The application (in `Pleroma.FlakeId`) handles theses IDs properly as integers; to keep compatibility
# with previously issued ids.
#execute "update activities set external_id = CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
#execute "update users set external_id = CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
- execute "ALTER TABLE activities DROP CONSTRAINT activities_pkey CASCADE;"
- execute "ALTER TABLE users DROP CONSTRAINT users_pkey CASCADE;"
+ clippy = start_clippy_heartbeats()
- execute "ALTER TABLE activities ALTER COLUMN id DROP default;"
- execute "ALTER TABLE users ALTER COLUMN id DROP default;"
+ # Lock both tables to avoid a running server to meddling with our transaction
+ execute "LOCK TABLE activities;"
+ execute "LOCK TABLE users;"
- execute "ALTER TABLE activities ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
- execute "ALTER TABLE users ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
+ execute """
+ ALTER TABLE activities
+ DROP CONSTRAINT activities_pkey CASCADE,
+ ALTER COLUMN id DROP default,
+ ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid),
+ ADD PRIMARY KEY (id);
+ """
- execute "ALTER TABLE activities ADD PRIMARY KEY (id);"
- execute "ALTER TABLE users ADD PRIMARY KEY (id);"
+ execute """
+ ALTER TABLE users
+ DROP CONSTRAINT users_pkey CASCADE,
+ ALTER COLUMN id DROP default,
+ ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid),
+ ADD PRIMARY KEY (id);
+ """
+
+ execute "UPDATE users SET info = jsonb_set(info, '{pinned_activities}', array_to_json(ARRAY(select jsonb_array_elements_text(info->'pinned_activities')))::jsonb);"
# Fkeys:
# Activities - Referenced by:
# TABLE "push_subscriptions" CONSTRAINT "push_subscriptions_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
# TABLE "websub_client_subscriptions" CONSTRAINT "websub_client_subscriptions_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id)
- execute "ALTER TABLE notifications ALTER COLUMN activity_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(activity_id), 32, '0' ) AS uuid);"
- execute "ALTER TABLE notifications ADD CONSTRAINT notifications_activity_id_fkey FOREIGN KEY (activity_id) REFERENCES activities(id) ON DELETE CASCADE;"
+ execute """
+ ALTER TABLE notifications
+ ALTER COLUMN activity_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(activity_id), 32, '0' ) AS uuid),
+ ADD CONSTRAINT notifications_activity_id_fkey FOREIGN KEY (activity_id) REFERENCES activities(id) ON DELETE CASCADE;
+ """
for table <- ~w(notifications filters lists oauth_authorizations oauth_tokens password_reset_tokens push_subscriptions websub_client_subscriptions) do
- execute "ALTER TABLE #{table} ALTER COLUMN user_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(user_id), 32, '0' ) AS uuid);"
- execute "ALTER TABLE #{table} ADD CONSTRAINT #{table}_user_id_fkey FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE;"
+ 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)
+ end
+ end
+
+ defp stop_clippy_heartbeats(pid) do
+ if pid do
+ Process.unlink(pid)
+ Process.exit(pid, :kill)
+ Clippy.puts [[:green, :bright, "Hurray!!", "", "", "Migration completed!"]]
+ end
+ end
+
end
projects / akkoma / blobdiff