1 files changed, 37 insertions, 0 deletions
diff --git a/db/post_migrate/20200506154421_migrate_scim_identities_to_saml_for_new_users.rb b/db/post_migrate/20200506154421_migrate_scim_identities_to_saml_for_new_users.rb
new file mode 100644
index 00000000000..718e788aad7
--- /dev/null
+++ b/db/post_migrate/20200506154421_migrate_scim_identities_to_saml_for_new_users.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+class MigrateScimIdentitiesToSamlForNewUsers < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  class ScimIdentity < ActiveRecord::Base
+    self.table_name = 'scim_identities'
+
+    belongs_to :user
+
+    include ::EachBatch
+  end
+
+  class Identity < ActiveRecord::Base
+    self.table_name = 'identities'
+
+    belongs_to :saml_provider
+  end
+
+  def up
+    users_with_saml_provider = Identity.select('user_id').joins(:saml_provider)
+
+    ScimIdentity.each_batch do |relation|
+      identity_records = relation
+        .select("scim_identities.extern_uid, 'group_saml', scim_identities.user_id, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, saml_providers.id")
+        .joins(:user)
+        .joins('inner join saml_providers on saml_providers.group_id=scim_identities.group_id')
+        .where("date_trunc('second',scim_identities.created_at) at time zone 'UTC' = date_trunc('second',users.created_at)")
+        .where.not(user_id: users_with_saml_provider)
+
+      execute "insert into identities (extern_uid, provider, user_id, created_at, updated_at, saml_provider_id) #{identity_records.to_sql} on conflict do nothing"
+    end
+  end
+
+  def down
+  end
+end