Class: RSwim::ProtocolState

Inherits:
Object
  • Object
show all
Defined in:
lib/rswim/protocol_state.rb

Instance Method Summary collapse

Constructor Details

#initialize(node_member_id, seed_member_ids, t_ms, r_ms) ⇒ ProtocolState

Returns a new instance of ProtocolState.



5
6
7
8
9
10
11
 
# File 'lib/rswim/protocol_state.rb', line 5

def initialize(node_member_id, seed_member_ids, t_ms, r_ms)
  @t_ms = t_ms
  @r_ms = r_ms
  @member_pool = new_member_pool(node_member_id, seed_member_ids)
  @node_member_id = node_member_id
  @t = @r = 1
end

Instance Method Details

#advance(input_messages, elapsed_seconds) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
# File 'lib/rswim/protocol_state.rb', line 21

def advance(input_messages, elapsed_seconds)
  @t += elapsed_seconds * 1000
  @t = 0 if @t >= @t_ms

  @r += elapsed_seconds * 1000
  @r = 0 if @r >= @r_ms

  input_messages.each do |message|
    raise 'message must be of type Message' unless message.is_a? Message

    update_member(message)
  end

  @member_pool.update_members(elapsed_seconds)
  output_messages = @member_pool.prepare_output

  # TODO: more deterministic steady state mechanism,
  # e.g. output_messages = @member_pool.next_steady_state(elapsed_seconds)
  # using a flag set by member state
  3.times do
    @member_pool.update_members(0)
    output_messages.concat(@member_pool.prepare_output)
  end

  @member_pool.send_ping_to_random_healthy_member if @t == 0

  3.times do
    @member_pool.update_members(0)
    output_messages.concat(@member_pool.prepare_output)
  end

  @member_pool.status_report if @r == 0

  output_messages
end

#append_custom_state(key, value) ⇒ Object 



17
18
19
 
# File 'lib/rswim/protocol_state.rb', line 17

def append_custom_state(key, value)
  @member_pool.append_custom_state(key, value)
end

#subscribe(&block) ⇒ Object 



13
14
15
 
# File 'lib/rswim/protocol_state.rb', line 13

def subscribe(&block)
  @member_pool.subscribe(&block)
end