Class: HyperMesh::IncomingBroadcast

Inherits:
Object
  • Object
show all
Defined in:
lib/synchromesh/client_drivers.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id) ⇒ IncomingBroadcast

Returns a new instance of IncomingBroadcast.



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# File 'lib/synchromesh/client_drivers.rb', line 130

def initialize(id)
  @id = id
  @received = Set.new
  @record = {}
  @previous_changes = {}
end

Instance Attribute Details

#record ⇒ Object (readonly)

private



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# File 'lib/synchromesh/client_drivers.rb', line 120

def record
  @record
end

Class Method Details

.add_connection(channel_name, id = nil) ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 29

def self.add_connection(channel_name, id = nil)
  channel_string = "#{channel_name}#{'-'+id.to_s if id}"
  open_channels << channel_string
  channel_string
end

.connect_to(channel_name, id = nil) ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 35

def self.connect_to(channel_name, id = nil)
  channel_string = add_connection(channel_name, id)
  if ClientDrivers.opts[:transport] == :pusher
    channel = "#{ClientDrivers.opts[:channel]}-#{channel_string}"
    %x{
      var channel = #{ClientDrivers.opts[:pusher_api]}.subscribe(#{channel});
      channel.bind('create', #{ClientDrivers.opts[:create]});
      channel.bind('change', #{ClientDrivers.opts[:change]});
      channel.bind('destroy', #{ClientDrivers.opts[:destroy]});
      channel.bind('pusher:subscription_succeeded', #{lambda {ClientDrivers.get_queued_data("connect-to-transport", channel_string)}})
    }
  elsif ClientDrivers.opts[:transport] == :action_cable
    channel = "#{ClientDrivers.opts[:channel]}-#{channel_string}"
    HTTP.post(ClientDrivers.polling_path('action-cable-auth', channel)).then do |response|
      %x{
        #{HyperMesh.action_cable_consumer}.subscriptions.create(
          {
            channel: "HyperMesh::ActionCableChannel",
            client_id: #{ClientDrivers.opts[:id]},
            synchromesh_channel: #{channel_string},
            authorization: #{response.json[:authorization]},
            salt: #{response.json[:salt]}
          },
          {
            connected: function() {
              #{ClientDrivers.get_queued_data("connect-to-transport", channel_string)}
            },
            received: function(data) {
              var data = #{JSON.parse(`JSON.stringify(data)`)}
              #{ClientDrivers.send("sync_#{`data`['message']}", `data`['data'])}
              return true
            }
          }
        )
      }
    end
  else
    HTTP.get(ClientDrivers.polling_path(:subscribe, channel_string))
  end
end

.in_transit ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 126

def self.in_transit
  @in_transit ||= Hash.new { |h, k| h[k] = new(k) }
end

.open_channels ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 122

def self.open_channels
  @open_channels ||= Set.new
end

.receive(data, operation, &block) ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 76

def self.receive(data, operation, &block)
  in_transit[data[:broadcast_id]].receive(data, operation, &block)
end

Instance Method Details

#complete! ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 167

def complete!
  self.class.in_transit.delete @id
end

#destroyed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/synchromesh/client_drivers.rb', line 106

def destroyed?
  @destroyed
end

#klass ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 110

def klass
  Object.const_get(@klass)
end

#local(operation, record, data) ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 137

def local(operation, record, data)
  @destroyed = operation == :destroy
  @is_new = operation == :create
  @klass = record.class.name
  @record = data
  record.backing_record.destroyed = false
  @record.merge!(id: record.id) if record.id
  record.backing_record.destroyed = @destroyed
  @backing_record = record.backing_record
  attributes = record.backing_record.attributes
  data.each do |k, v|
    next if klass.reflect_on_association(k) || attributes[k] == v
    @previous_changes[k] = [attributes[k], v]
  end
  self
end

#merge_current_values(br) ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 171

def merge_current_values(br)
  current_values = Hash[*@previous_changes.collect do |attr, values|
    value = attr == :id ? record[:id] : values.first
    begin
    if br.attributes.key?(attr) &&
       br.attributes[attr] != br.convert(attr, value) &&
       br.attributes[attr] != br.convert(attr, values.last)
      puts "warning #{attr} has changed locally - will force a reload.\n"\
           "local value: #{br.attributes[attr]} remote value: #{br.convert(attr, value)}->#{br.convert(attr, values.last)}"
      return nil
    end
    rescue Exception => e
      debugger
      nil
    end
    [attr, value]
  end.compact.flatten].merge(br.attributes)
  klass._react_param_conversion(current_values)
rescue Exception => e
  debugger
  nil
end

#new? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/synchromesh/client_drivers.rb', line 102

def new?
  @is_new
end

#receive(data, operation) {|complete! if | ... } ⇒ Object

Yields:

  • (complete! if ) 


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# File 'lib/synchromesh/client_drivers.rb', line 154

def receive(data, operation)
  @destroyed = operation == :destroy
  @is_new = operation == :create
  @channels ||= self.class.open_channels.intersection data[:channels]
  raise 'synchromesh security violation' unless @channels.include? data[:channel]
  @received << data[:channel]
  @klass ||= data[:klass]
  @record.merge! data[:record]
  @previous_changes.merge! data[:previous_changes]
  @backing_record = ReactiveRecord::Base.exists?(klass, record[:id])
  yield complete! if @channels == @received
end

#record_with_current_values ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 80

def record_with_current_values
  ReactiveRecord::Base.load_data do

    backing_record = @backing_record || klass.find(record[:id]).backing_record
    if destroyed?
      backing_record.ar_instance
    else
      merge_current_values(backing_record)
    end
  end
end

#record_with_new_values ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 92

def record_with_new_values
  klass._react_param_conversion(record).tap do |ar_instance|
    if destroyed?
      ar_instance.backing_record.destroy_associations
    elsif new?
      ar_instance.backing_record.initialize_collections
    end
  end
end

#to_s ⇒ Object 



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# File 'lib/synchromesh/client_drivers.rb', line 114

def to_s
  "klass: #{klass} record: #{record} new?: #{new?} destroyed?: #{destroyed?}"
end