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Contents
require 'ddtrace/utils/database'
require 'ddtrace/utils/forking'
module Datadog
# Utils contains low-level utilities, typically to provide pseudo-random trace IDs.
module Utils
extend Utils::Forking
EMPTY_STRING = ''.encode(::Encoding::UTF_8).freeze
# We use a custom random number generator because we want no interference
# with the default one. Using the default prng, we could break code that
# would rely on srand/rand sequences.
# Return a span id
def self.next_id
after_fork! { reset! }
id_rng.rand(Datadog::Span::RUBY_MAX_ID)
end
def self.id_rng
@id_rng ||= Random.new
end
def self.reset!
@id_rng = Random.new
end
private_class_method :id_rng, :reset!
def self.truncate(value, size, omission = '...'.freeze)
string = value.to_s
return string if string.size <= size
string = string.slice(0, size - 1)
if size < omission.size
string[0, size] = omission
else
string[size - omission.size, size] = omission
end
string
end
def self.utf8_encode(str, options = {})
str = str.to_s
if options[:binary]
# This option is useful for "gracefully" displaying binary data that
# often contains text such as marshalled objects
str.encode('UTF-8', 'binary', invalid: :replace, undef: :replace, replace: '')
elsif str.encoding == ::Encoding::UTF_8
str
elsif str.empty?
# DEV Optimization as `nil.to_s` is a very common source for an empty string,
# DEV but it comes encoded as US_ASCII.
EMPTY_STRING
else
str.encode(::Encoding::UTF_8)
end
rescue => e
Datadog.logger.debug("Error encoding string in UTF-8: #{e}")
options.fetch(:placeholder, EMPTY_STRING)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems