Class: Klomp::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/klomp/connection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server, options = {}) ⇒ Connection

Returns a new instance of Connection.



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

def initialize(server, options={})
  @options = options

  if server =~ /^stomp:\/\//
    uri                  = URI.parse server
    host, port           = uri.host, uri.port
    @options['login']    = uri.user if uri.user
    @options['passcode'] = uri.password if uri.password
    if uri.query && !uri.query.empty?
      uri.query.split('&').each {|pair| k, v = pair.split('=', 2); @options[k] = v }
    end
  else
    address            = server.split ':'
    port, host         = address.pop.to_i, address.pop
    @options['host'] ||= address.pop unless address.empty?
  end

  @options['server']   = [host, port]
  @options['host']   ||= host
  @subscriptions = {}
  @logger = options['logger']
  @select_timeout = options['select_timeout'] || 0.5
  connect
end

Instance Attribute Details

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/klomp/connection.rb', line 8

def logger
  @logger
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/klomp/connection.rb', line 8

def options
  @options
end

#subscriptions ⇒ Object (readonly)

Returns the value of attribute subscriptions.



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# File 'lib/klomp/connection.rb', line 8

def subscriptions
  @subscriptions
end

Instance Method Details

#closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/klomp/connection.rb', line 60

def closed?()       @closing && @socket.nil? end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/klomp/connection.rb', line 59

def connected?()    @socket end

#disconnect ⇒ Object 



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# File 'lib/klomp/connection.rb', line 62

def disconnect
  close!
  stop_subscriber_thread
  frame = Frames::Disconnect.new
  write frame rescue nil
  @socket.close rescue nil
  @socket = nil
  frame
end

#publish(queue, body, headers = {}) ⇒ Object 



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# File 'lib/klomp/connection.rb', line 35

def publish(queue, body, headers={})
  write Frames::Send.new(queue, body, headers)
end

#reconnect ⇒ Object 



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# File 'lib/klomp/connection.rb', line 72

def reconnect
  return if connected?
  logger.warn "reconnect server=#{options['server'].join(':')}" if logger
  connect
  subs = subscriptions.dup
  subscriptions.clear
  subs.each {|queue, subscriber| subscribe(queue, subscriber) }
  @sentinel = nil
ensure
  @subscriptions = subs if subs && subs.size != @subscriptions.size
end

#subscribe(queue, subscriber = nil, &block) ⇒ Object

Raises:



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# File 'lib/klomp/connection.rb', line 39

def subscribe(queue, subscriber = nil, &block)
  raise Klomp::Error, "no subscriber provided" unless subscriber || block
  raise Klomp::Error, "subscriber does not respond to #call" if subscriber && !subscriber.respond_to?(:call)
  previous = subscriptions[queue]
  subscriptions[queue] = subscriber || block
  frame = Frames::Subscribe.new(queue)
  if previous
    frame.previous_subscriber = previous
  else
    write frame
  end
  start_subscriber_thread
  frame
end

#unsubscribe(queue) ⇒ Object 



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# File 'lib/klomp/connection.rb', line 54

def unsubscribe(queue)
  queue = queue.headers['destination'] if Frames::Subscribe === queue
  write Frames::Unsubscribe.new(queue) if subscriptions.delete queue
end