Change account ids to snowflake ids (mastodon#15844)

Co-authored-by: Eugen Rochko <[email protected]>
hachyderm · Apr 15, 2021 · d5edf22 · d5edf22
1 parent ce2148c
commit d5edf22
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/db/migrate/20210306164523_account_ids_to_timestamp_ids.rb b/db/migrate/20210306164523_account_ids_to_timestamp_ids.rb
@@ -0,0 +1,17 @@
+class AccountIdsToTimestampIds < ActiveRecord::Migration[5.1]
+  def up
+    # Set up the accounts.id column to use our timestamp-based IDs.
+    safety_assured do
+      execute("ALTER TABLE accounts ALTER COLUMN id SET DEFAULT timestamp_id('accounts')")
+    end
+
+    # Make sure we have a sequence to use.
+    Mastodon::Snowflake.ensure_id_sequences_exist
+  end
+
+  def down
+    execute("LOCK accounts")
+    execute("SELECT setval('accounts_id_seq', (SELECT MAX(id) FROM accounts))")
+    execute("ALTER TABLE accounts ALTER COLUMN id SET DEFAULT nextval('accounts_id_seq')")
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
@@ -142,7 +142,7 @@
     t.index ["target_account_id"], name: "index_account_warnings_on_target_account_id"
   end
 
-  create_table "accounts", force: :cascade do |t|
+  create_table "accounts", id: :bigint, default: -> { "timestamp_id('statuses'::text)" }, force: :cascade do |t|
     t.string "username", default: "", null: false
     t.string "domain"
     t.string "secret", default: "", null: false