Module: NewRelic::Agent::Aws

Defined in:
lib/new_relic/agent/aws.rb

Constant Summary collapse

CHARACTERS = 
%w[A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 2 3 4 5 6 7].freeze
HEX_MASK = 
'7fffffffff80'

Class Method Summary collapse

Class Method Details

.convert_access_key_to_account_id(access_key) ⇒ Object 



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# File 'lib/new_relic/agent/aws.rb', line 20

def self.(access_key)
  decoded_key = Integer(decode_to_hex(access_key[4..-1]), 16)
  mask = Integer(HEX_MASK, 16)
  (decoded_key & mask) >> 7
end

.convert_section(section) ⇒ Object 



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# File 'lib/new_relic/agent/aws.rb', line 34

def self.convert_section(section)
  buffer = 0
  section.each do |chunk|
    buffer = (buffer << 5) + chunk
  end

  chunk_count = (section.length * 5.0 / 8.0).floor

  if section.length < 8
    buffer >>= (5 - (chunk_count * 8)) % 5
  end

  decoded = []
  chunk_count.times do |i|
    shift = 8 * (chunk_count - 1 - i)
    decoded << ((buffer >> shift) & 255).to_s(16)
  end

  decoded
end

.create_arn(service, resource, config) ⇒ Object 



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# File 'lib/new_relic/agent/aws.rb', line 11

def self.create_arn(service, resource, config)
  region = config.region
   = NewRelic::Agent::Aws.(config.credentials.access_key_id)

  "arn:aws:#{service}:#{region}:#{}:#{resource}"
rescue => e
  NewRelic::Agent.logger.warn("Failed to create ARN: #{e}")
end

.decode_to_hex(access_key) ⇒ Object 



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# File 'lib/new_relic/agent/aws.rb', line 26

def self.decode_to_hex(access_key)
  bytes = access_key.delete('=').each_char.map { |c| CHARACTERS.index(c) }

  bytes.each_slice(8).map do |section|
    convert_section(section)
  end.flatten[0...6].join
end