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Contents
# frozen_string_literal: true
# Copyright 2019 OpenTelemetry Authors
#
# SPDX-License-Identifier: Apache-2.0
module OpenTelemetry
module Trace
# TraceFlags contain details about the trace. Unlike Tracestate values,
# TraceFlags are present in all traces. Currently, the only TraceFlag is a
# boolean {sampled?} {https://www.w3.org/TR/trace-context/#trace-flags flag}.
class TraceFlags
class << self
private :new # rubocop:disable Style/AccessModifierDeclarations
# Returns a newly created {TraceFlags} with the specified flags.
#
# @param [Integer] flags 8-bit byte of bit flags
# @return [TraceFlags]
def from_byte(flags)
flags = 0 unless flags & ~0xFF == 0 # rubocop:disable Style/NumericPredicate
new(flags)
end
end
# @api private
# The constructor is private and only for use internally by the class.
# Users should use the {from_byte} factory method to obtain a {TraceFlags}
# instance.
#
# @param [Integer] flags 8-bit byte of bit flags
# @return [TraceFlags]
def initialize(flags)
@flags = flags
end
# Returns whether the caller may have recorded trace data. When false,
# the caller did not record trace data out-of-band.
#
# @return [Boolean]
def sampled?
(@flags & 1) != 0
end
DEFAULT = from_byte(0)
SAMPLED = from_byte(1)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems