1 files changed, 33 insertions, 0 deletions
diff --git a/db/migrate/20201125233219_add_incident_management_on_call_participants.rb b/db/migrate/20201125233219_add_incident_management_on_call_participants.rb
new file mode 100644
index 00000000000..2a9b1d8b276
--- /dev/null
+++ b/db/migrate/20201125233219_add_incident_management_on_call_participants.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+class AddIncidentManagementOnCallParticipants < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  PARTICIPANT_ROTATION_INDEX_NAME = 'index_inc_mgmnt_oncall_participants_on_oncall_rotation_id'
+  PARTICIPANT_USER_INDEX_NAME = 'index_inc_mgmnt_oncall_participants_on_oncall_user_id'
+  UNIQUE_INDEX_NAME = 'index_inc_mgmnt_oncall_participants_on_user_id_and_rotation_id'
+
+  disable_ddl_transaction!
+
+  def up
+    unless table_exists?(:incident_management_oncall_participants)
+      with_lock_retries do
+        create_table :incident_management_oncall_participants do |t|
+          t.references :oncall_rotation, index: false, null: false, foreign_key: { to_table: :incident_management_oncall_rotations, on_delete: :cascade }
+          t.references :user, index: false, null: false, foreign_key: { on_delete: :cascade }
+          t.integer :color_palette, limit: 2, null: false
+          t.integer :color_weight, limit: 2, null: false
+          t.index :user_id, name: PARTICIPANT_USER_INDEX_NAME
+          t.index :oncall_rotation_id, name: PARTICIPANT_ROTATION_INDEX_NAME
+          t.index [:user_id, :oncall_rotation_id], unique: true, name: UNIQUE_INDEX_NAME
+        end
+      end
+    end
+  end
+
+  def down
+    drop_table :incident_management_oncall_participants
+  end
+end