1 files changed, 36 insertions, 0 deletions
diff --git a/db/migrate/20200504191813_add_fingerprint_to_events.rb b/db/migrate/20200504191813_add_fingerprint_to_events.rb
new file mode 100644
index 00000000000..1171d548f10
--- /dev/null
+++ b/db/migrate/20200504191813_add_fingerprint_to_events.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+class AddFingerprintToEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    unless column_exists?(:events, :fingerprint)
+      with_lock_retries { add_column :events, :fingerprint, :binary }
+    end
+
+    unless check_constraint_exists?(:events, constraint_name)
+      add_check_constraint(
+        :events,
+        "octet_length(fingerprint) <= 128",
+        constraint_name,
+        validate: true
+      )
+    end
+  end
+
+  def down
+    remove_check_constraint(:events, constraint_name)
+
+    if column_exists?(:events, :fingerprint)
+      with_lock_retries { remove_column :events, :fingerprint }
+    end
+  end
+
+  def constraint_name
+    check_constraint_name(:events, :fingerprint, 'max_length')
+  end
+end