1 files changed, 29 insertions, 0 deletions
diff --git a/db/post_migrate/20200310215714_migrate_saml_identities_to_scim_identities.rb b/db/post_migrate/20200310215714_migrate_saml_identities_to_scim_identities.rb
new file mode 100644
index 00000000000..e2ec7b62d31
--- /dev/null
+++ b/db/post_migrate/20200310215714_migrate_saml_identities_to_scim_identities.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class MigrateSamlIdentitiesToScimIdentities < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  class Identity < ActiveRecord::Base
+    self.table_name = 'identities'
+
+    include ::EachBatch
+  end
+
+  def up
+    Identity
+      .joins('INNER JOIN saml_providers ON saml_providers.id = identities.saml_provider_id')
+      .where('saml_providers.group_id IN (SELECT group_id FROM scim_oauth_access_tokens)')
+      .select('identities.extern_uid, identities.user_id, saml_providers.group_id, TRUE AS active,
+              identities.created_at, CURRENT_TIMESTAMP AS updated_at')
+      .each_batch do |batch|
+        data_to_insert = batch.map do |record|
+          record.attributes.extract!("extern_uid", "user_id", "group_id", "active", "created_at", "updated_at")
+        end
+
+        Gitlab::Database.bulk_insert(:scim_identities, data_to_insert, on_conflict: :do_nothing)
+      end
+  end
+
+  def down
+  end
+end