Module: Legion::Extensions::Actors::Fingerprint

Included in:
Every, Poll
Defined in:
lib/legion/extensions/actors/fingerprint.rb

Instance Method Summary collapse

Instance Method Details

#compute_fingerprint ⇒ Object 



19
20
21
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 19

def compute_fingerprint
  Digest::SHA256.hexdigest(fingerprint_source.to_s)
end

#fingerprint_source ⇒ Object 



13
14
15
16
17
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 13

def fingerprint_source
  bucket = respond_to?(:time) ? time.to_i : 60
  bucket = 1 if bucket < 1
  (Time.now.utc.to_i / bucket).to_s
end

#skip_if_unchanged? ⇒ Boolean

Returns:

  • (Boolean) 


9
10
11
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 9

def skip_if_unchanged?
  false
end

#skip_or_run ⇒ Object 



33
34
35
36
37
38
39
40
41
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 33

def skip_or_run
  if skip_if_unchanged? && unchanged?
    Legion::Logging.debug "#{self.class} skipped: fingerprint unchanged (#{@last_fingerprint[0, 8]}...)"
    return
  end

  yield
  store_fingerprint!
end

#store_fingerprint! ⇒ Object 



29
30
31
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 29

def store_fingerprint!
  @last_fingerprint = compute_fingerprint
end

#unchanged? ⇒ Boolean

Returns:

  • (Boolean) 


23
24
25
26
27
 
# File 'lib/legion/extensions/actors/fingerprint.rb', line 23

def unchanged?
  return false if @last_fingerprint.nil?

  compute_fingerprint == @last_fingerprint
end