Class: Promenade::Prometheus::Options

Inherits:
Object
  • Object
show all
Defined in:
lib/promenade/prometheus.rb

Constant Summary collapse

BUCKET_PRESETS = 
{
  network: [0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10].freeze,
  memory: (0..10).map { |i| 128 * (2**i) },
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Options

Returns a new instance of Options.



41
42
43
44
45
46
 
# File 'lib/promenade/prometheus.rb', line 41

def initialize
  @buckets = BUCKET_PRESETS[:network]
  @base_labels = {}
  @doc = nil
  @multiprocess_mode = :all
end

Instance Method Details

#args(type) ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/promenade/prometheus.rb', line 69

def args(type)
  case type
  when :gauge
    [@doc, @base_labels, @multiprocess_mode]
  when :histogram
    [@doc, @base_labels, @buckets]
  when :counter, :summary
    [@doc, @base_labels]
  else
    fail "Unsupported metric type: #{type}"
  end
end

#base_labels(labels) ⇒ Object 



52
53
54
 
# File 'lib/promenade/prometheus.rb', line 52

def base_labels(labels)
  @base_labels = labels
end

#buckets(buckets) ⇒ Object 



60
61
62
63
64
65
66
67
 
# File 'lib/promenade/prometheus.rb', line 60

def buckets(buckets)
  if buckets.is_a?(Symbol)
    @buckets = BUCKET_PRESETS[buckets]
    fail "#{buckets} is not a valid bucket preset" if @buckets.nil?
  else
    @buckets = buckets
  end
end

#doc(str) ⇒ Object 



48
49
50
 
# File 'lib/promenade/prometheus.rb', line 48

def doc(str)
  @doc = str
end

#evaluate(&block) ⇒ Object 



82
83
84
85
 
# File 'lib/promenade/prometheus.rb', line 82

def evaluate(&block)
  instance_eval(&block)
  self
end

#multiprocess_mode(mode) ⇒ Object 



56
57
58
 
# File 'lib/promenade/prometheus.rb', line 56

def multiprocess_mode(mode)
  @multiprocess_mode = mode
end