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



29
30
31
32
 
# 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



35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# 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