63 lines
1.7 KiB
Ruby
63 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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module Ci
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class DeleteObjectsService
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TransactionInProgressError = Class.new(StandardError)
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TRANSACTION_MESSAGE = "can't perform network calls inside a database transaction"
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BATCH_SIZE = 100
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RETRY_IN = 10.minutes
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def execute
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objects = load_next_batch
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destroy_everything(objects)
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end
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def remaining_batches_count(max_batch_count:)
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Ci::DeletedObject
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.ready_for_destruction(max_batch_count * BATCH_SIZE)
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.size
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.fdiv(BATCH_SIZE)
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.ceil
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end
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private
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# rubocop: disable CodeReuse/ActiveRecord
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def load_next_batch
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# `find_by_sql` performs a write in this case and we need to wrap it in
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# a transaction to stick to the primary database.
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Ci::DeletedObject.transaction do
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Ci::DeletedObject.find_by_sql([
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next_batch_sql, new_pick_up_at: RETRY_IN.from_now
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])
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end
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end
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# rubocop: enable CodeReuse/ActiveRecord
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def next_batch_sql
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<<~SQL.squish
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UPDATE "ci_deleted_objects"
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SET "pick_up_at" = :new_pick_up_at
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WHERE "ci_deleted_objects"."id" IN (#{locked_object_ids_sql})
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RETURNING *
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SQL
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end
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def locked_object_ids_sql
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Ci::DeletedObject.lock_for_destruction(BATCH_SIZE).to_sql
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end
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def destroy_everything(objects)
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raise TransactionInProgressError, TRANSACTION_MESSAGE if transaction_open?
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return unless objects.any?
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deleted = objects.select(&:delete_file_from_storage)
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Ci::DeletedObject.id_in(deleted.map(&:id)).delete_all
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end
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def transaction_open?
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Ci::DeletedObject.connection.transaction_open?
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end
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end
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end
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