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Contents
# encoding: utf-8
require "logstash/instrument/null_metric"
module LogStash module Instrument
# This class acts a a proxy between the metric library and the user calls.
#
# This is the class that plugins authors will use to interact with the `MetricStore`
# It has the same public interface as `Metric` class but doesnt require to send
# the namespace on every call.
#
# @see Logstash::Instrument::Metric
class NamespacedNullMetric
attr_reader :namespace_name
# Create metric with a specific namespace
#
# @param metric [LogStash::Instrument::Metric] The metric instance to proxy
# @param namespace [Array] The namespace to use
def initialize(metric = nil, namespace_name = :null)
@metric = metric
@namespace_name = Array(namespace_name)
end
def increment(key, value = 1)
end
def decrement(key, value = 1)
end
def gauge(key, value)
end
def report_time(key, duration)
end
def time(key, &block)
if block_given?
yield
else
::LogStash::Instrument::NullMetric::NullTimedExecution
end
end
def collector
@metric.collector
end
def counter(_)
::LogStash::Instrument::NullMetric::NullGauge
end
def namespace(name)
NamespacedNullMetric.new(metric, namespace_name + Array(name))
end
private
attr_reader :metric
end
end; end
Version data entries
67 entries across 67 versions & 5 rubygems