57 lines
3.5 KiB
Elixir
57 lines
3.5 KiB
Elixir
defmodule Pleroma.Repo.Migrations.UsersAndActivitiesFlakeId do
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use Ecto.Migration
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# This migrates from int serial IDs to custom Flake:
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# 1- create a temporary uuid column
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# 2- fill this column with compatibility ids (see below)
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# 3- remove pkeys constraints
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# 4- update relation pkeys with the new ids
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# 5- rename the temporary column to id
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# 6- re-create the constraints
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def change do
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# Old serial int ids are transformed to 128bits with extra padding.
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# The application (in `Pleroma.FlakeId`) handles theses IDs properly as integers; to keep compatibility
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# with previously issued ids.
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#execute "update activities set external_id = CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
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#execute "update users set external_id = CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
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# Lock both tables to avoid a running server to meddling with our transaction
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execute "LOCK TABLE activities;"
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execute "LOCK TABLE users;"
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execute "ALTER TABLE activities DROP CONSTRAINT activities_pkey CASCADE;"
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execute "ALTER TABLE users DROP CONSTRAINT users_pkey CASCADE;"
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execute "ALTER TABLE activities ALTER COLUMN id DROP default;"
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execute "ALTER TABLE users ALTER COLUMN id DROP default;"
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execute "ALTER TABLE activities ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
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execute "ALTER TABLE users ALTER COLUMN id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(id), 32, '0' ) AS uuid);"
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execute "ALTER TABLE activities ADD PRIMARY KEY (id);"
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execute "ALTER TABLE users ADD PRIMARY KEY (id);"
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# Fkeys:
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# Activities - Referenced by:
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# TABLE "notifications" CONSTRAINT "notifications_activity_id_fkey" FOREIGN KEY (activity_id) REFERENCES activities(id) ON DELETE CASCADE
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# Users - Referenced by:
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# TABLE "filters" CONSTRAINT "filters_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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# TABLE "lists" CONSTRAINT "lists_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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# TABLE "notifications" CONSTRAINT "notifications_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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# TABLE "oauth_authorizations" CONSTRAINT "oauth_authorizations_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id)
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# TABLE "oauth_tokens" CONSTRAINT "oauth_tokens_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id)
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# TABLE "password_reset_tokens" CONSTRAINT "password_reset_tokens_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id)
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# TABLE "push_subscriptions" CONSTRAINT "push_subscriptions_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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# TABLE "websub_client_subscriptions" CONSTRAINT "websub_client_subscriptions_user_id_fkey" FOREIGN KEY (user_id) REFERENCES users(id)
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execute "ALTER TABLE notifications ALTER COLUMN activity_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(activity_id), 32, '0' ) AS uuid);"
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execute "ALTER TABLE notifications ADD CONSTRAINT notifications_activity_id_fkey FOREIGN KEY (activity_id) REFERENCES activities(id) ON DELETE CASCADE;"
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for table <- ~w(notifications filters lists oauth_authorizations oauth_tokens password_reset_tokens push_subscriptions websub_client_subscriptions) do
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execute "ALTER TABLE #{table} ALTER COLUMN user_id SET DATA TYPE uuid USING CAST( LPAD( TO_HEX(user_id), 32, '0' ) AS uuid);"
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execute "ALTER TABLE #{table} ADD CONSTRAINT #{table}_user_id_fkey FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE;"
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end
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end
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end
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