Class: ServicesManager

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/bunny-pub-sub/services_manager.rb

Defined Under Namespace

Classes: RabbitServiceClient

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ServicesManager 



9
10
11
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 9

def initialize
  @clients = {}
end

Instance Attribute Details

#clients ⇒ Object (readonly)

Returns the value of attribute clients.



7
8
9
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 7

def clients
  @clients
end

Instance Method Details

#cancel_and_remove_client_subscriber(name) ⇒ Object 



67
68
69
70
71
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 67

def cancel_and_remove_client_subscriber(name)
  return unless valid_name? name

  @clients[name].cancel_and_remove_subscriber
end

#create_and_start_client_subscriber(name, subscriber_config, action, results_publisher) ⇒ Object 



57
58
59
60
61
62
63
64
65
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 57

def create_and_start_client_subscriber(
  name, subscriber_config, action, results_publisher
)
  return unless valid_name? name

  @clients[name].create_and_start_subscriber(
    subscriber_config, action, results_publisher
  )
end

#create_client_publisher(name, config) ⇒ Object 



45
46
47
48
49
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 45

def create_client_publisher(name, config)
  return unless valid_name? name

  @clients[name].create_publisher config
end

#deregister_client(name) ⇒ Object 



73
74
75
76
77
78
79
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 73

def deregister_client(name)
  return unless valid_name? name

  @clients[name].remove_all
  @clients[name] = nil
  @clients.delete name
end

#register_client(name, publisher_config = nil, subscriber_config = nil, action = nil, results_publisher = nil) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 13

def register_client(name,
                    publisher_config = nil,
                    subscriber_config = nil,
                    action = nil,
                    results_publisher = nil)

  return unless valid_name? name, true
  unless @clients[name].nil?
    return puts "Service with the name: #{name} already registered"
  end

  @clients[name] = RabbitServiceClient.new name
  return @clients[name] if publisher_config.nil?

  # Note: results_publisher CAN be nil.
  @clients[name].create_publisher publisher_config
  return @clients[name] if subscriber_config.nil?

  if action.nil?
    @clients[name].create_subscriber_without_action(
      subscriber_config, results_publisher
    )
    return @clients[name]
  end

  @clients[name].create_and_start_subscriber(
    subscriber_config, action, results_publisher
  )

  @clients[name]
end

#remove_client_publisher(name) ⇒ Object 



51
52
53
54
55
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 51

def remove_client_publisher(name)
  return unless valid_name? name

  @clients[name].remove_publisher
end

#start_connection(connection, repeat) ⇒ Object 



81
82
83
84
85
86
87
88
89
90
91
92
 
# File 'lib/bunny-pub-sub/services_manager.rb', line 81

def start_connection(connection, repeat)
  (1 + repeat).times do 
    begin
      connection.start
      return
    rescue
      puts 'Unable to start connection to rabbitmq -- delaying 10 seconds'
      sleep(10) unless repeat == 0
    end
  end
  raise "Unable to connect to rabbitmq"
end