Module: Artery::Model::Subscriptions::ClassMethods

Defined in:
lib/artery/model/subscriptions.rb

Instance Method Summary collapse

Instance Method Details

#artery_add_get_subscriptions ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/MethodLength,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity



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# File 'lib/artery/model/subscriptions.rb', line 70

def artery_add_get_subscriptions
  artery_add_subscription Routing.uri(model: artery_model_name_plural, action: :get) do |data, reply, _sub|
    obj = artery_find data['uuid']

    representation = data['representation']

    data = obj.blank? ? { error: 'not_found' } : obj.to_artery(representation)

    Artery.publish(reply, data)
  end

  artery_add_subscription Routing.uri(model: artery_model_name_plural, action: :get_all) do |data, reply, _sub|
    scope    = "artery_#{data['scope'] || 'all'}"
    per_page = data['per_page']
    page     = data['page'] || 0

    representation = data['representation']

    data = if respond_to?(scope)
             relation = send(scope)
             relation = relation.offset(page * per_page).limit(per_page) if per_page
             objects = relation.map { |obj| obj.to_artery(representation) }
             {
               objects: objects,
               _index: Artery.message_class.latest_index(artery_model_name)
             }
           else
             Artery.logger.error "No artery scope '#{data['scope']}' defined!"
             { error: 'No such scope!' }
           end

    Artery.publish(reply, data)
  end

  artery_add_subscription Routing.uri(model: artery_model_name_plural,
                                      action: :get_updates) do |data, reply, _sub|
    index = data['after_index'].to_i
    autoenrich = data['representation'].present?
    per_page = data['per_page'] || (autoenrich ? ARTERY_MAX_AUTOENRICHED_UPDATES_SYNC : ARTERY_MAX_UPDATES_SYNC)

    if index.positive?
      messages = Artery.message_class.after_index(artery_model_name, index).limit(per_page)
    else
      Artery.publish(reply, error: :bad_index)
      return
    end

    # Deduplicate
    messages = messages.to_a.group_by { |m| [m.action, m.data] }.values
                       .map { |mm| mm.max_by { |m| m.index.to_i } }
                       .sort_by { |m| m.index.to_i }

    latest_index = Artery.message_class.latest_index(artery_model_name)
    updates_latest_index = messages.last&.index || latest_index

    # Autoenrich data
    if autoenrich
      scope = "artery_#{data['scope'] || 'all'}"
      autoenrich_data = send(scope).artery_find_all(messages.map { |m| m.data['uuid'] }).to_h do |obj|
        [obj.send(artery_uuid_attribute), obj.to_artery(data['representation'])]
      end
    end

    updates = messages.map do |message|
      upd = message.to_artery.merge('action' => message.action)
      # WARNING: duplicated logic with `Subscription#handle`!
      if %i[create update].include?(message.action.to_sym) &&
         autoenrich_data &&
         (attrs = autoenrich_data[message.data['uuid']])
        upd['attributes'] = attrs
      end
      upd
    end

    Artery.publish(reply, updates: updates,
                          _index: updates_latest_index, _continue: updates_latest_index < latest_index)
  end
end

#artery_add_subscription(uri, options = {}, &blk) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/artery/model/subscriptions.rb', line 32

def artery_add_subscription(uri, options = {}, &blk)
  raise ArgumentError, 'block must be provided to handle subscription updates' unless block_given?

  handler ||= Multiblock.wrapper

  if uri.action.blank? || uri.action.to_s == '*'
    yield(handler)
  else
    handler._default(&blk)
  end

  artery[:subscriptions] ||= []
  artery[:subscriptions].push Subscription.new(self, uri, **options, handler: handler)
end

#artery_find(uuid) ⇒ Object 



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# File 'lib/artery/model/subscriptions.rb', line 22

def artery_find(uuid)
  artery_find_all([uuid]).first
end

#artery_find_all(uuids) ⇒ Object 



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# File 'lib/artery/model/subscriptions.rb', line 18

def artery_find_all(uuids)
  where "#{artery_uuid_attribute}": uuids
end

#artery_resync! ⇒ Object 



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# File 'lib/artery/model/subscriptions.rb', line 26

def artery_resync!
  return false if artery_source_model?

  artery[:subscriptions]&.detect(&:synchronize?)&.receive_all
end

#artery_rewind_message_counter!(service: nil) ⇒ Object

rubocop:disable Naming/PredicateMethod



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# File 'lib/artery/model/subscriptions.rb', line 55

def artery_rewind_message_counter!(service: nil) # rubocop:disable Naming/PredicateMethod
  return false if artery_source_model?

  subscriptions = artery[:subscriptions]&.select do |subscription|
    next false unless subscription.rewindable?

    service.nil? || subscription.uri.service.to_sym == service.to_sym
  end
  return false if subscriptions.blank?

  subscriptions.each(&:rewind_message_counter!)
  true
end

#artery_watch_model(service:, model: nil, action: nil, **kwargs, &blk) ⇒ Object 



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# File 'lib/artery/model/subscriptions.rb', line 47

def artery_watch_model(service:, model: nil, action: nil, **kwargs, &blk)
  model  ||= artery_model_name
  action ||= '*'

  artery_add_subscription Routing.uri(service: service, model: model, action: action), **kwargs, client: true,
                          &blk
end