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Contents
# This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/newrelic-ruby-agent/blob/main/LICENSE for complete details.
# frozen_string_literal: true
module NewRelic
module Agent
module GuidGenerator
module_function
MAX_RAND_16 = 16**16
MAX_RAND_32 = 16**32
# This method intentionally does not use SecureRandom, because it relies
# on urandom, which raises an exception in MRI when the interpreter runs
# out of allocated file descriptors.
# The guids generated by this method may not be _secure_, but they are
# random enough for our purposes.
def generate_guid(length = 16)
guid = case length
when 16
rand(MAX_RAND_16)
when 32
rand(MAX_RAND_32)
else
rand(16**length)
end.to_s(16)
guid.length < length ? guid.rjust(length, '0') : guid
end
end
end
end
Version data entries
30 entries across 30 versions & 1 rubygems