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-rw-r--r--lib/tasks/migrate/schema_check.rake20
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/tasks/migrate/schema_check.rake b/lib/tasks/migrate/schema_check.rake
new file mode 100644
index 00000000000..76f1f23c7bd
--- /dev/null
+++ b/lib/tasks/migrate/schema_check.rake
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# Configures the database by running migrate, or by loading the schema and seeding if needed
+task schema_version_check: :environment do
+ next if ENV['SKIP_SCHEMA_VERSION_CHECK']
+
+ schema_version = ActiveRecord::Migrator.current_version
+
+ # Ensure migrations are being run from a supported schema version
+ # A schema verison of 0 is a fresh db, and should be safe to run migrations
+ # But a database with existing migrations less than our min version is not
+ if schema_version > 0 && schema_version < Gitlab::Database::MIN_SCHEMA_VERSION
+ raise "Your current database version is too old to be migrated. " \
+ "You should upgrade to GitLab #{Gitlab::Database::MIN_SCHEMA_GITLAB_VERSION} before moving to this version. " \
+ "Please see https://docs.gitlab.com/ee/policy/maintenance.html#upgrade-recommendations"
+ end
+end
+
+# Ensure the check is a pre-requisite when running db:migrate
+Rake::Task["db:migrate"].enhance [:schema_version_check]