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class EventChannel
class << self
def setup
return if @dalli
@dalli = Dalli::Client.new(Settings.memcached, namespace: "aclog-worker-node")
@channel = EM::Channel.new
end
def push(data)
raise ScriptError, "Call EventChannel.setup first" unless @dalli
if id = data[:identifier]
key, val = id.split("#", 2)
cur = @dalli.get(key)
if cur && (!val || (cur <=> val) > -1)
WorkerNode.logger.debug("UniqueChannel") { "Duplicate event: #{key}" }
return
else
@dalli.set(key, val || true)
end
end
@channel << data
end
alias << push
def subscribe(&blk)
raise ScriptError, "Call EventChannel.setup first" unless @channel
@channel.subscribe &blk
end
end
end
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