Raise an error if advisory lock in migrator was not released.

1 files changed, 8 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index 360bf25a8c..ecf74b9824 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -140,6 +140,7 @@ module ActiveRecord
 
   class ConcurrentMigrationError < MigrationError #:nodoc:
     DEFAULT_MESSAGE = "Cannot run migrations because another migration process is currently running.".freeze
+    RELEASE_LOCK_FAILED_MESSAGE = "Failed to release advisory lock".freeze
 
     def initialize(message = DEFAULT_MESSAGE)
       super
@@ -1337,12 +1338,17 @@ module ActiveRecord
 
       def with_advisory_lock
         lock_id = generate_migrator_advisory_lock_id
-        got_lock = Base.connection.get_advisory_lock(lock_id)
+        connection = Base.connection
+        got_lock = connection.get_advisory_lock(lock_id)
         raise ConcurrentMigrationError unless got_lock
         load_migrated # reload schema_migrations to be sure it wasn't changed by another process before we got the lock
         yield
       ensure
-        Base.connection.release_advisory_lock(lock_id) if got_lock
+        if got_lock && !connection.release_advisory_lock(lock_id)
+          raise ConcurrentMigrationError.new(
+            ConcurrentMigrationError::RELEASE_LOCK_FAILED_MESSAGE
+          )
+        end
       end
 
       MIGRATOR_SALT = 2053462845