lib/fluent/plugin/formatter_json.rb
#
# Fluentd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'fluent/plugin/formatter'
require 'fluent/oj_options'
module Fluent
module Plugin
class JSONFormatter < Formatter
include Fluent::Plugin::Newline::Mixin
Plugin.register_formatter('json', self)
config_param :json_parser, :string, default: 'oj'
config_param :add_newline, :bool, default: true
def configure(conf)
super
if @json_parser == 'oj'
if Fluent::OjOptions.available?
@dump_proc = Oj.method(:dump)
else
log.info "Oj isn't installed, fallback to Yajl as json parser"
@dump_proc = Yajl.method(:dump)
end
else
@dump_proc = Yajl.method(:dump)
end
# format json is used on various highload environment, so re-define method to skip if check
unless @add_newline
define_singleton_method(:format, method(:format_without_nl))
end
end
def format(tag, time, record)
"#{@dump_proc.call(record)}#{@newline}"
end
def format_without_nl(tag, time, record)
@dump_proc.call(record)
end
end
end
end