module NewRelic::Agent::GuidGenerator
Constants
- MAX_RAND_16
- MAX_RAND_32
Public Instance Methods
Source
# File lib/new_relic/agent/guid_generator.rb, line 17 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
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.