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viaq_ovn_audit.rb
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viaq_ovn_audit.rb
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require 'fluent/plugin/input'
require 'time'
# Parses audit log to format that fits Origin Aggregated Logging
module Fluent
class ViaqOvnAudit
class ViaqOvnAuditParserException < StandardError
end
# Keys as found in raw audit.log messsages
IN_TYPE = 'type'
IN_MSG = 'msg'
# Keys used in Origin Aggregated Logging schema
OUT_HOST_TYPE = 'type'
OUT_HOST_HOSTNAME = 'hostname'
TIME = '@timestamp'
LEVEL = 'level'
ENV_HOSTNAME = 'NODE_NAME'
AUDIT_ENVELOPE = 'structured'
def initialize()
@@hostname = ENV[ENV_HOSTNAME].nil? ? nil : String.new(ENV[ENV_HOSTNAME])
end
# Takes one line from audit.log and returns hash
# that fits the OAL format.
def parse_audit_line(line)
puts line.inspect
event = {}
return normalize(event, line.split('|'))
end
private
# Parses metadata and extract key values
def normalize(target, metadata)
event = {}
event[TIME] = metadata[0]
event[LEVEL] = metadata[3].downcase
event[OUT_HOST_HOSTNAME] = @@hostname unless @@hostname.nil?
event[AUDIT_ENVELOPE] = {}
key_value = metadata[4].split(',')
key_value.each do |pair|
key = pair.split('=')[0].strip
value = pair.split('=')[1].strip
event[AUDIT_ENVELOPE][key] = value
end
return event
end
end
end