Class: Gitlab::BackgroundMigration::BackfillPackagesTagsProjectId

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

Overview

This migration populates the new ‘packages_tags.project_id` column from joining with `packages_packages` table

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_packages_tags_project_id.rb', line 11

def perform
  each_sub_batch do |sub_batch|
    joined = sub_batch
      .joins('INNER JOIN packages_packages ON packages_tags.package_id = packages_packages.id')
      .select('packages_tags.id, packages_packages.project_id')

    ApplicationRecord.connection.execute <<~SQL
      WITH joined_cte(packages_tag_id, project_id) AS MATERIALIZED (
        #{joined.to_sql}
      )
      UPDATE packages_tags
      SET project_id = joined_cte.project_id
      FROM joined_cte
      WHERE id = joined_cte.packages_tag_id
    SQL
  end
end