Class: FreeMessageQueue::AdminInterface

Inherits:
Object
  • Object
show all
Defined in:
lib/fmq/admin.rb

Overview

This class is dedicated to the AJAX based admin interface.

Constant Summary collapse

WRONG_METHOD =

rack response for bad requests

[400, {"CONTENT-TYPE" => "text/plain", "ERROR" => "Wrong http Method"}, ""]
OK =

rack response for good requests

[200, {"CONTENT-TYPE" => "text/plain"}, ["ok"]]

Instance Method Summary collapse

Constructor Details

#initialize(queue_manager) ⇒ AdminInterface

create the admin interface for the passed QueueManager



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# File 'lib/fmq/admin.rb', line 29

def initialize(queue_manager)
  @manager = queue_manager
  @log = FreeMessageQueue.logger
end

Instance Method Details

#call(env) ⇒ Object

handle all requests



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# File 'lib/fmq/admin.rb', line 35

def call(env)
  begin
    request = Rack::Request.new(env)
    @log.debug "[AdminInterface] ENV: #{env.inspect}"

    if request.get? then
      @log.info "[AdminInterface] list queues"
      # ======= LIST QUEUES

      queues_code = []
      @manager.queues.each do |queue_name|
        queues_code << queue_to_json(queue_name)
      end

      return [200, {"CONTENT-TYPE" => "application/json"}, ["[%s]" % queues_code.join(","), ]]
    elsif request.post? then
      if request["_method"] == "delete" then
        # ======= DELETE QUEUE

        @log.info "[AdminInterface] delete queue"
        @manager.delete_queue(request["path"])
        return OK
      elsif request["_method"] == "create"
        # ======= CREATE QUEUE

        @log.info "[AdminInterface] create queue"
        @manager.setup_queue(request["path"], request["queue_class"]) do |q|
          q.max_messages = request["max_messages"].to_i
          q.max_size = str_bytes request["max_size"]
          request.params.each { |k,v|
            q.send("#{k[3..-1]}=", v) if k.match(/^qm_/)
          }
        end
        return OK
      else
        return WRONG_METHOD
      end
    else
      return WRONG_METHOD
    end
  rescue QueueManagerException => ex
    return [400, {"CONTENT-TYPE" => "text/plain", "ERROR" => ex.message}, [ex.message]]
  end
end