class PromMultiProc::Collector
Attributes
metric_methods[R]
name[R]
Public Class Methods
new(name, label_keys, writer)
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# File lib/prom_multi_proc/collector.rb, line 5 def initialize(name, label_keys, writer) @name = name @label_keys = label_keys @writer = writer @metric_methods = (public_methods(false) - %i( validate! valid_method? valid_label_keys? valid_label_values? valid_value? to_msg )).map(&:to_s) end
Public Instance Methods
to_msg(method, value, labels)
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# File lib/prom_multi_proc/collector.rb, line 47 def to_msg(method, value, labels) { "name" => name, "method" => method, "value" => value.to_f, "label_values" => labels.values } end
valid_label_keys?(labels)
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# File lib/prom_multi_proc/collector.rb, line 35 def valid_label_keys?(labels) labels.keys == @label_keys end
valid_label_values?(labels)
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# File lib/prom_multi_proc/collector.rb, line 39 def valid_label_values?(labels) labels.values.all? { |v| v.is_a?(String) || v.is_a?(Symbol) } end
valid_method?(method)
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# File lib/prom_multi_proc/collector.rb, line 31 def valid_method?(method) metric_methods.include?(method) end
valid_value?(value)
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# File lib/prom_multi_proc/collector.rb, line 43 def valid_value?(value) value.is_a?(Numeric) end
validate!(method, value, labels)
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# File lib/prom_multi_proc/collector.rb, line 16 def validate!(method, value, labels) unless valid_method?(method) raise PromMultiProcError.new("Invalid metric method (#{method}): try: #{metric_methods.inspect}") end unless valid_label_keys?(labels) raise PromMultiProcError.new("Invalid label cardinality (#{name}): #{labels.keys.inspect}, need keys: #{@label_keys.inspect}") end unless valid_label_values?(labels) raise PromMultiProcError.new("Invalid label values (#{name}): #{labels.values.inspect} (all values must be string or symbol)") end unless valid_value?(value) raise PromMultiProcError.new("Invalid value (#{name}): #{value.inspect} (must be numeric)") end end
Private Instance Methods
write(method, value, labels)
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# File lib/prom_multi_proc/collector.rb, line 56 def write(method, value, labels) @writer.write(self, method, value, labels) end