78 lines
1.9 KiB
Ruby
78 lines
1.9 KiB
Ruby
# Copyright (c) 2010, Diaspora Inc. This file is
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# licensed under the Affero General Public License version 3 or later. See
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# the COPYRIGHT file.
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module Diaspora
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module WebSocket
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REDIS_CONNECTION_SET = 'ws-uids'
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def self.redis
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@redis ||= Resque.redis
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end
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def self.length
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redis.llen :websocket
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end
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def self.queue_to_user(uid, data)
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redis.lpush(:websocket, {:uid => uid, :data => data}.to_json)
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end
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def self.initialize_channels
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@channels = {}
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end
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def self.next
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redis.rpop(:websocket)
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end
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def self.push_to_user(uid, data)
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Rails.logger.debug "event=socket-push uid=#{uid}"
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@channels[uid][0].push(data) if @channels[uid]
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end
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def self.subscribe(uid, ws)
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Rails.logger.info "event=socket-subscribe uid=#{uid} channels=#{self.length}"
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self.ensure_channel(uid)
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@channels[uid][0].subscribe{ |msg| ws.send msg }
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@channels[uid][1] += 1
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redis.sadd(REDIS_CONNECTION_SET, uid)
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end
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def self.ensure_channel(uid)
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@channels[uid] ||= [EM::Channel.new, 0 ]
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end
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def self.unsubscribe(uid,sid)
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Rails.logger.info "event=socket-unsubscribe sid=#{sid} uid=#{uid} channels=#{self.length}"
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@channels[uid][0].unsubscribe(sid) if @channels[uid]
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@channels[uid][1] -= 1
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if @channels[uid][1] <= 0
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@channels.delete(uid)
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redis.srem(REDIS_CONNECTION_SET, uid)
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end
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end
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def self.is_connected?(uid)
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redis.sismember(REDIS_CONNECTION_SET, uid)
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end
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end
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module Socketable
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def socket_to_user(user_or_id, opts={})
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begin
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SocketsController.new.outgoing(user_or_id, self, opts)
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rescue
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nil
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end
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end
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def unsocket_from_user(user_or_id, opts={})
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begin
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SocketsController.new.outgoing(user_or_id, Retraction.for(self), opts)
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rescue
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nil
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end
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end
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end
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end
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