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Contents
# A Sampler is used to capture meaningful metrics in a background thread # periodically. They will either be invoked once a minute just before the # data is sent to the agent (default) or every 10 seconds, when #use_harvest_sampler? # returns false. # # Samplers can be added to New Relic by subclassing NewRelic::Agent::Sampler. # Instances are created when the agent is enabled and installed. Subclasses # are registered for instantiation automatically. module NewRelic module Agent class Sampler # Exception denotes a sampler is not available and it will not be registered. class Unsupported < StandardError; end attr_accessor :stats_engine attr_reader :id @sampler_classes = [] def self.inherited(subclass) @sampler_classes << subclass end # Override with check. Called before instantiating. def self.supported_on_this_platform? true end # Override to use the periodic sampler instead of running the sampler on the # minute during harvests. def self.use_harvest_sampler? true end def self.sampler_classes @sampler_classes end def initialize(id) @id = id end def poll raise "Implement in the subclass" end end end end
Version data entries
121 entries across 121 versions & 6 rubygems