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b168eb5819
* Introduce a connection coder responsible for encoding Cable messages as WebSocket messages, defaulting to `ActiveSupport::JSON` and duck- typing to any object responding to `#encode` and `#decode`. * Consolidate encoding responsibility to the connection. No longer explicitly JSON-encode from channels or other sources. Pass Cable messages as Hashes to `#transmit` and rely on it to encode. * Introduce stream encoders responsible for decoding pubsub messages. Preserve the currently raw encoding, but make it easy to use JSON. Same duck type as the connection encoder. * Revert recent data normalization/quoting (#23649) which treated `identifier` and `data` values as nested JSON objects rather than as opaque JSON-encoded strings. That dealt us an awkward hand where we'd decode JSON strings… or not, but always encode as JSON. Embedding JSON object values directly is preferably, no extra JSON encoding, but that should be a purposeful protocol version change rather than ambiguously, inadvertently supporting multiple message formats.
43 lines
1.4 KiB
Ruby
43 lines
1.4 KiB
Ruby
module ActionCable
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module Connection
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# Makes it possible for the RemoteConnection to disconnect a specific connection.
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module InternalChannel
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extend ActiveSupport::Concern
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private
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def internal_channel
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"action_cable/#{connection_identifier}"
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end
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def subscribe_to_internal_channel
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if connection_identifier.present?
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callback = -> (message) { process_internal_message decode(message) }
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@_internal_subscriptions ||= []
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@_internal_subscriptions << [ internal_channel, callback ]
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server.event_loop.post { pubsub.subscribe(internal_channel, callback) }
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logger.info "Registered connection (#{connection_identifier})"
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end
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end
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def unsubscribe_from_internal_channel
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if @_internal_subscriptions.present?
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@_internal_subscriptions.each { |channel, callback| server.event_loop.post { pubsub.unsubscribe(channel, callback) } }
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end
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end
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def process_internal_message(message)
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case message['type']
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when 'disconnect'
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logger.info "Removing connection (#{connection_identifier})"
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websocket.close
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end
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rescue Exception => e
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logger.error "There was an exception - #{e.class}(#{e.message})"
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logger.error e.backtrace.join("\n")
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close
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end
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end
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end
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end
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