2017-05-04 06:13:33 -04:00
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module Projects
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class PropagateService
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BATCH_SIZE = 100
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2017-05-04 12:11:28 -04:00
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def self.propagate(*args)
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new(*args).propagate
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2017-05-04 06:13:33 -04:00
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end
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def initialize(template)
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@template = template
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end
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2017-05-04 12:11:28 -04:00
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def propagate
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2017-05-04 06:13:33 -04:00
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return unless @template&.active
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Rails.logger.info("Propagating services for template #{@template.id}")
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propagate_projects_with_template
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end
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private
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def propagate_projects_with_template
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offset = 0
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loop do
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batch = project_ids_batch(offset)
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2017-05-05 03:40:44 -04:00
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bulk_create_from_template(batch)
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2017-05-04 06:13:33 -04:00
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2017-05-04 12:11:28 -04:00
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break if batch.size < BATCH_SIZE
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2017-05-04 06:13:33 -04:00
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offset += BATCH_SIZE
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end
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end
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2017-05-05 03:40:44 -04:00
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def bulk_create_from_template(batch)
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service_hash_list = batch.map do |project_id|
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service_hash.merge('project_id' => project_id)
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end
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Project.transaction do
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Service.create!(service_hash_list)
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end
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2017-05-04 06:13:33 -04:00
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end
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def project_ids_batch(offset)
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2017-05-05 03:40:44 -04:00
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Project.connection.execute(
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<<-SQL
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SELECT id
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FROM projects
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WHERE NOT EXISTS (
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SELECT true
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FROM services
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WHERE services.project_id = projects.id
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AND services.type = '#{@template.type}'
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)
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LIMIT #{BATCH_SIZE} OFFSET #{offset}
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SQL
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).to_a.flatten
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end
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def service_hash
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@service_hash ||= @template.as_json(methods: :type).except('id', 'template')
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2017-05-04 06:13:33 -04:00
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end
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end
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end
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