Class: Gitlab::BackgroundMigration::BackfillDeploymentMergeRequestsProjectId

Inherits:
BatchedMigrationJob
  • Object
show all
Defined in:
lib/gitlab/background_migration/backfill_deployment_merge_requests_project_id.rb

Constant Summary

Constants inherited from BatchedMigrationJob

Gitlab::BackgroundMigration::BatchedMigrationJob::DEFAULT_FEATURE_CATEGORY, Gitlab::BackgroundMigration::BatchedMigrationJob::MINIMUM_PAUSE_MS

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, health_context_tables, #initialize, job_arguments, job_arguments_count, operation_name, scope_to, tables_to_check_for_vacuum

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_deployment_merge_requests_project_id.rb', line 10

def perform
  each_sub_batch do |relation|
    connection.execute(<<~SQL)
      WITH batched_relation AS (
        #{relation.where(project_id: nil).select(:deployment_id, :merge_request_id).to_sql}
      )
      UPDATE deployment_merge_requests
      SET project_id = deployments.project_id
      FROM batched_relation
      INNER JOIN deployments ON batched_relation.deployment_id = deployments.id
      WHERE deployment_merge_requests.deployment_id = batched_relation.deployment_id
        AND deployment_merge_requests.merge_request_id = batched_relation.merge_request_id;
    SQL
  end
end