pixie v0.3.9 Pixie.Message.Subscribe

Convert an incoming subscription request into a struct.

Request
MUST include:  * channel
               * clientId
               * subscription
MAY include:   * ext
               * id

This struct contains the following keys:

:channel always "/meta/subscribe".
:subscription the channel the user wishes to subscribe to.
:client_id the client ID generated by the server during handshake.
:ext an arbitrary map of data the client sent for use in extensions (usually authentication information, etc). Optional.
:id a message ID generated by the client. Optional.

Summary

Convert the incoming message into a Pixie.Message.Subscribe by copying only those fields we care about

init(message)

Convert the incoming message into a Pixie.Message.Subscribe by copying only those fields we care about.