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# frozen_string_literal: true
module Projects
class PropagateServiceTemplate
BATCH_SIZE = 100
delegate :data_fields_present?, to: :template
def self.propagate(template)
new(template).propagate
end
def initialize(template)
@template = template
end
def propagate
return unless template.active?
propagate_projects_with_template
end
private
attr_reader :template
def propagate_projects_with_template
loop do
batch = Project.uncached { project_ids_batch }
bulk_create_from_template(batch) unless batch.empty?
break if batch.size < BATCH_SIZE
end
end
def bulk_create_from_template(batch)
service_list = batch.map do |project_id|
service_hash.values << project_id
end
Project.transaction do
results = bulk_insert(Service, service_hash.keys << 'project_id', service_list)
if data_fields_present?
data_list = results.map { |row| data_hash.values << row['id'] }
bulk_insert(template.data_fields.class, data_hash.keys << 'service_id', data_list)
end
run_callbacks(batch)
end
end
def project_ids_batch
Project.connection.select_values(
<<-SQL
SELECT id
FROM projects
WHERE NOT EXISTS (
SELECT true
FROM services
WHERE services.project_id = projects.id
AND services.type = #{ActiveRecord::Base.connection.quote(template.type)}
)
AND projects.pending_delete = false
AND projects.archived = false
LIMIT #{BATCH_SIZE}
SQL
)
end
def bulk_insert(klass, columns, values_array)
items_to_insert = values_array.map { |array| Hash[columns.zip(array)] }
klass.insert_all(items_to_insert, returning: [:id])
end
def service_hash
@service_hash ||= template.as_json(methods: :type, except: %w[id template project_id])
end
def data_hash
@data_hash ||= template.data_fields.as_json(only: template.data_fields.class.column_names).except('id', 'service_id')
end
# rubocop: disable CodeReuse/ActiveRecord
def run_callbacks(batch)
if active_external_issue_tracker?
Project.where(id: batch).update_all(has_external_issue_tracker: true)
end
if active_external_wiki?
Project.where(id: batch).update_all(has_external_wiki: true)
end
end
# rubocop: enable CodeReuse/ActiveRecord
def active_external_issue_tracker?
template.issue_tracker? && !template.default
end
def active_external_wiki?
template.type == 'ExternalWikiService'
end
end
end
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