Class: Fluent::Plugin::GenHashValueFilter

Inherits:
Filter
  • Object
show all
Includes:
MurmurHash3::V128
Defined in:
lib/fluent/plugin/filter_genhashvalue.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ GenHashValueFilter

Returns a new instance of GenHashValueFilter.



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 19

def initialize
  super
  require 'base64'
  require 'base91'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 25

def configure(conf)
  #$log.trace "configure #{conf}"
  super
end

#filter(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 40

def filter(tag, time, record)
  s = ""
  s += tag + separator if inc_tag_as_key
  s += time.to_s + separator if inc_time_as_key

  s += keys.map {|k| record[k]}.join(separator)
  if base64_enc || base91_enc then
    record[set_key] = hash_enc(hash_type, s)
  else
    record[set_key] = hash_hex(hash_type, s)
  end
  record
end

#hash_enc(type, str) ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 69

def hash_enc(type, str)
  case type
  when 'md5'
    h = Digest::MD5.digest(str)
  when 'sha1'
    h = Digest::SHA1.digest(str)
  when 'sha256'
    h = Digest::SHA256.digest(str)
  when 'sha512'
    h = Digest::SHA512.digest(str)
  when 'mur128'
    h = MurmurHash3::V128.str_digest(str)
  end
  if base64_enc then
    h = Base64::strict_encode64(h)
  elsif base91_enc then
    h = Base91::encode(h)
  end
end

#hash_hex(type, str) ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 54

def hash_hex(type, str)
  case type
  when 'md5'
    h = Digest::MD5.hexdigest(str)
  when 'sha1'
    h = Digest::SHA1.hexdigest(str)
  when 'sha256'
    h = Digest::SHA256.hexdigest(str)
  when 'sha512'
    h = Digest::SHA512.hexdigest(str)
  when 'mur128'
    h = MurmurHash3::V128.str_hexdigest(str)
  end
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 35

def shutdown
  super
  # destroy
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/filter_genhashvalue.rb', line 30

def start
  super
  # init
end