Class: TinyQ::Connection

Inherits:
EventMachine::Connection
  • Object
show all
Includes:
EventMachine::Protocols::LineText2
Defined in:
lib/tinyq/connection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/tinyq/connection.rb', line 10

def initialize
    set_delimiter TinyQ::DELIMITER
end

Instance Attribute Details

#ip ⇒ Object (readonly)

Returns the value of attribute ip.



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# File 'lib/tinyq/connection.rb', line 4

def ip
  @ip
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/tinyq/connection.rb', line 5

def port
  @port
end

#server ⇒ Object

Returns the value of attribute server.



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# File 'lib/tinyq/connection.rb', line 3

def server
  @server
end

Instance Method Details

#failed(errmsg) ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 34

def failed errmsg
    response = {:Status => "Failed", :Message => errmsg}
    reply(response)
end

#ok ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 29

def ok
    response = {:Status => "OK"}
    reply(response)
end

#post_init ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 14

def post_init
    @port, *ip_parts = get_peername[2,6].unpack "nC4"
    @ip = ip_parts.join('.')
    
    $LOG.info("#{@ip}:#{@port} connected")
end

#process_message(data) ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 40

def process_message data
    begin
        request = JSON.parse(data)
        $LOG.debug("Request: #{request}")
        if request.has_key? 'Command'
            $LOG.debug("Command - #{request['Command']}")

            case request['Command']
            when "PutMessages"
                # Put message in a bucket
                if request.has_key? 'Bucket'
                    bucket = @server.bucket(request['Bucket'])

                    if request['Message'].kind_of?(Array)
                        request['Message'].each do |message|
                            Journal.instance.event({:Event=>"PutMessage"})
                            bucket.put_message(message)
                        end
                    else
                        Journal.instance.event({:Event=>"PutMessage"})
                        bucket.put_message(request['Message'])
                    end

                    ok()
                else
                    failed("Parameter Bucket missing")
                end
            when "FeedFunnel"
                # Feed Bucket to Funnel
                if request.has_key? 'Bucket' and request.has_key? 'Funnel'
                    # Hook up a funnel to a bucket
                    bucket = @server.bucket(request['Bucket'])
                    funnel = @server.funnels[request['Funnel']]
                    if nil != funnel
                        bucket.feed_funnel(funnel)
                    else
                        if request.has_key? 'Broadcaster'
                            funnel = bucket.funnel(request['Funnel'], request['Broadcaster'])
                        else
                            funnel = bucket.funnel(request['Funnel'])
                        end
                        @server.funnels[request['Funnel']] = funnel
                    end

                    ok()
                else
                    failed("Parameter Bucket or Funnel missing")
                end
            when "GetMessages"
                # Get Messages from Funnel
                if request.has_key? 'Funnel'
                    funnel = @server.funnels[request['Funnel']]
                    if nil == funnel
                        $LOG.warn("Funnel was never fed...")
                        failed("Funnel was never fed")
                    else
                        if request.has_key? 'Ack'
                            ok()
                        end

                        if request.has_key? 'Count'
                            funnel.add_connection(self, request['Count'])
                        else
                            funnel.add_connection(self)
                        end
                    end
                else
                    failed("Parameter Funnel missing")
                end
            when "GetInfo"
                if request.has_key? 'Bucket'
                    bucket = @server.bucket(request['Bucket'])

                    response = {
                        :Status => 'OK',
                        :Bucket => {
                        :Name => bucket.name,
                        :MessageCount => bucket.messages.size,
                        :Funnels => [],
                    }
                    }

                    bucket.funnels.each do |n,funnel|
                        response[:Bucket][:Funnels].push({
                            :Name => funnel.name,
                            :MessageCount => funnel.messages.size,
                            :SubscriberCount => funnel.subscribers.size,
                        })
                    end

                    reply(response)

                elsif request.has_key? 'Funnel'
                else
                    failed("Parameter Funnel or Bucket missing")
                end
            else
                # Unsupported command
                failed("Unsupported command")
            end

        else
            # Did not understand
            failed("Parameter Command missing")
        end
    rescue Exception => e
        $LOG.error("Failed #{e}")
        failed("Internal error #{e}")
    end
end

#receive_line(line) ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 21

def receive_line line
    process_message line
end

#reply(rsp) ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 25

def reply rsp
    send_data("#{rsp.to_json}#{TinyQ::DELIMITER}")
end

#unbind ⇒ Object 



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# File 'lib/tinyq/connection.rb', line 151

def unbind
    $LOG.info("#{@ip}:#{@port} disconnected")
 
    @server.remove_connection(self)
end