Class: Oria::Server

Inherits:
EventMachine::Connection
  • Object
show all
Defined in:
lib/oria/server.rb

Constant Summary collapse

@@timer = 
nil

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.debug? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/oria/server.rb', line 9

def debug?
  @@debug
end

.log(value, app_key = nil) ⇒ Object 



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# File 'lib/oria/server.rb', line 13

def log(value, app_key = nil)
  if debug? || @@options[:puts]
    value = "#{Time.now.strftime('%d %b %H:%M:%S')} - #{"#{app_key}: " if app_key}#{value}"
    logger.debug(value) if debug?
    puts value if @@options[:puts]
  end
end

.logger ⇒ Object 



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# File 'lib/oria/server.rb', line 21

def logger
  require 'logger'
  @@logger ||= Logger.new(log_file, 0, 100 * 1024 * 1024) 
end

.running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/oria/server.rb', line 26

def running?
  pid && !!Process.getpgid(pid)
rescue Errno::ESRCH
  false
end

.start(server, port, debug = false, options = {}) ⇒ Object 



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# File 'lib/oria/server.rb', line 32

def start(server, port, debug = false, options = {})
  @@debug = !!debug
  @@options = options
  log "Server started"
  @@servers ||= if File.exists?(yaml_store)
    log "DB loaded from disk"
    YAML.load_file(yaml_store)
  else
    {}
  end
  pid = Process.pid
  EventMachine.run do
    EventMachine.start_server server, port, Oria::Server
    File.open(pid_file, 'w') do |file|
      file.puts pid
    end
    log "The server is now ready to accept connections on port #{port}"
  end
end

.stop ⇒ Object 



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# File 'lib/oria/server.rb', line 52

def stop
  response = false
  if File.exists?(pid_file)
    begin
      if pid
        Process.kill(9, pid)
        response = true
      end
    rescue Errno::ESRCH
      # TODO: We perform error reporting elsewhere. Still,
      # an actionless rescue doesn't seem like a great idea.
    ensure
      File.unlink(pid_file)
      @@pid = nil
    end
  end
  response
end

.store_hash(app_key) ⇒ Object 



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# File 'lib/oria/server.rb', line 71

def store_hash(app_key)
  @@timer.cancel if @@timer
  @@timer = EventMachine::Timer.new(10) do
    log "Writing changes to disk", app_key
    File.open(yaml_store, 'w') do |store|
      store.puts YAML.dump(@@servers)
    end
    @@timer = nil
  end
end

Instance Method Details

#post_init ⇒ Object 



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# File 'lib/oria/server.rb', line 100

def post_init
  Oria::Server.log "Client connected"
end

#receive_data(data) ⇒ Object 



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# File 'lib/oria/server.rb', line 104

def receive_data(data)
  Oria::Server.log "Responding to #{data}"
  data = data.split(' ')
  method = data.shift
  data = JSON.parse(data.join(' '))
  @app_key = data.delete('app_key')
  case method
  when 'GET'
    response = hash[data['key']]
  when 'DELETE'
    if data.empty?
      hash.clear
    else
      response = hash.delete(data['key'])
    end
  when 'PUT'
    if data.key?('key')
      hash[data['key']] = data['value']
      response = data['value']
    elsif data.key?('value')
      response = random_key
      hash[response] = data['value']
    end
  end
  if defined?(response)
    response = JSON.generate({:response => response})
    Oria::Server.log "Sending response: #{response}"
    Oria::Server.store_hash(@app_key)
    send_data response
  end
rescue JSON::ParserError
  send_data "Invalid request"
end

#unbind ⇒ Object 



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# File 'lib/oria/server.rb', line 138

def unbind
end