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# (c) Copyright IBM Corp. 2021
# (c) Copyright Instana Inc. 2021
module Instana
class Activator
class << self
attr_reader :trace_point, :activators
def start
# :nocov:
@trace_point = TracePoint.new(:end) do
activated = ::Instana::Activator.call
::Instana.logger.debug { "Activated #{activated.join(', ')}" } unless activated.empty?
end
@trace_point.enable if enabled?
# :nocov:
end
def call
@activators ||= []
activated, @activators = @activators.partition(&:call)
activated
end
def inherited(subclass)
super(subclass)
@activators ||= []
@activators << subclass.new
end
private
def enabled?
ENV.fetch('INSTANA_DISABLE_AUTO_INSTR', 'false').eql?('false') || !ENV.key?('INSTANA_DISABLE')
end
end
def call
instrument if can_instrument?
end
end
end
DIRECTORY_OF_ACTIVATORS = "#{__dir__}/activators/".freeze
def activated_set
all_activators = Set.new(
Dir["*.rb", base: DIRECTORY_OF_ACTIVATORS].map do |f|
File.basename(f, '.rb')
end
)
if ENV['INSTANA_ACTIVATE_SET']
selected_activators = Set.new(ENV.fetch('INSTANA_ACTIVATE_SET', '').split(','))
all_activators & selected_activators
else
all_activators
end
end
def require_selected_activator_files
activated_set.each do |f|
require("#{DIRECTORY_OF_ACTIVATORS}#{f}.rb")
end
end
require_selected_activator_files
Version data entries
16 entries across 16 versions & 1 rubygems