Class: Gitlab::BackgroundMigration::BackfillUserDetails

Inherits:
BatchedMigrationJob show all
Defined in:
lib/gitlab/background_migration/backfill_user_details.rb

Defined Under Namespace

Classes: UserDetail

Constant Summary

Constants inherited from BatchedMigrationJob

Gitlab::BackgroundMigration::BatchedMigrationJob::DEFAULT_FEATURE_CATEGORY

Constants included from Database::DynamicModelHelpers

Database::DynamicModelHelpers::BATCH_SIZE

Instance Method Summary collapse

Methods inherited from BatchedMigrationJob

#batch_metrics, cursor, cursor?, cursor_columns, feature_category, #filter_batch, generic_instance, #initialize, job_arguments, job_arguments_count, operation_name, scope_to

Methods included from Database::DynamicModelHelpers

#define_batchable_model, #each_batch, #each_batch_range

Constructor Details

This class inherits a constructor from Gitlab::BackgroundMigration::BatchedMigrationJob

Instance Method Details

#perform ⇒ Object 



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# File 'lib/gitlab/background_migration/backfill_user_details.rb', line 13

def perform
  each_sub_batch do |sub_batch|
    records_need_created_for_user_ids = sub_batch
                                          .joins("LEFT JOIN user_details ON (users.id = user_details.user_id)")
                                          .where(user_details: { user_id: nil })
                                          .ids

    next if records_need_created_for_user_ids.empty?

    user_details_attributes = records_need_created_for_user_ids.map do |user_id|
      {
        user_id: user_id
      }
    end

    # This should be safe so we do not hit the fk_rails_12e0b3043d constraint
    # since we already prequalified in the query above that no user_details
    # record exists for that user.
    # However, to be sure, we'll rescue here in case there is some extreme
    # edge case.
    UserDetail.upsert_all(user_details_attributes, returning: false)
  rescue Exception => e # rubocop:disable Lint/RescueException -- following https://docs.gitlab.com/ee/development/database/batched_background_migrations.html#best-practices re-raise
    logger.error(
      class: e.class,
      message: "BackfillUserDetails Migration: error inserting. Reason: #{e.message}",
      user_ids: records_need_created_for_user_ids
    )

    raise
  end
end