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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# A job to create ci_project_mirrors entries in batches
class BackfillCiProjectMirrors
class Project < ActiveRecord::Base # rubocop:disable Style/Documentation
include ::EachBatch
self.table_name = 'projects'
scope :base_query, -> do
select(:id, :namespace_id)
end
end
PAUSE_SECONDS = 0.1
SUB_BATCH_SIZE = 500
def perform(start_id, end_id)
batch_query = Project.base_query.where(id: start_id..end_id)
batch_query.each_batch(of: SUB_BATCH_SIZE) do |sub_batch|
first, last = sub_batch.pluck(Arel.sql('MIN(id), MAX(id)')).first
ranged_query = Project.unscoped.base_query.where(id: first..last)
update_sql = <<~SQL
INSERT INTO ci_project_mirrors (project_id, namespace_id)
#{insert_values(ranged_query)}
ON CONFLICT (project_id) DO NOTHING
SQL
# We do nothing on conflict because we consider they were already filled.
Project.connection.execute(update_sql)
sleep PAUSE_SECONDS
end
mark_job_as_succeeded(start_id, end_id)
end
private
def insert_values(batch)
batch.allow_cross_joins_across_databases(url: 'https://gitlab.com/gitlab-org/gitlab/-/issues/336433').to_sql
end
def mark_job_as_succeeded(*arguments)
Gitlab::Database::BackgroundMigrationJob.mark_all_as_succeeded('BackfillCiProjectMirrors', arguments)
end
end
end
end
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