Class: Fluent::Plugin::ExecInput

Inherits:
Input
  • Object
show all
Defined in:
lib/fluent/plugin/in_exec.rb

Constant Summary

Constants included from Configurable

Configurable::CONFIG_TYPE_REGISTRY

Instance Attribute Summary

Attributes included from Fluent::PluginLoggerMixin

#log

Attributes inherited from Base

#under_plugin_development

Instance Method Summary collapse

Methods included from Fluent::PluginHelper::Mixin

included

Methods included from Fluent::PluginLoggerMixin

included, #terminate

Methods included from Fluent::PluginId

#plugin_id, #plugin_id_configured?, #plugin_id_for_test?

Methods inherited from Base

#after_shutdown, #after_shutdown?, #after_start, #after_started?, #before_shutdown, #before_shutdown?, #close, #closed?, #configured?, #has_router?, #inspect, #shutdown, #shutdown?, #started?, #stop, #stopped?, #terminate, #terminated?

Methods included from SystemConfig::Mixin

#system_config, #system_config_override

Methods included from Configurable

#config, included, lookup_type, register_type

Constructor Details

#initialize ⇒ ExecInput

Returns a new instance of ExecInput.



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# File 'lib/fluent/plugin/in_exec.rb', line 31

def initialize
  super
  require 'fluent/plugin/exec_util'
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_exec.rb', line 55

def configure(conf)
  super

  if conf['localtime']
    @localtime = true
  elsif conf['utc']
    @localtime = false
  end

  if conf['timezone']
    @timezone = conf['timezone']
    Fluent::Timezone.validate!(@timezone)
  end

  if !@tag && !@tag_key
    raise Fleunt::ConfigError, "'tag' or 'tag_key' option is required on exec input"
  end

  if @time_key
    if @time_format
      f = @time_format
      @time_parse_proc =
        begin
          strptime = Strptime.new(f)
          Proc.new { |str| Fluent::EventTime.from_time(strptime.exec(str)) }
        rescue
          Proc.new {|str| Fluent::EventTime.from_time(Time.strptime(str, f)) }
        end
    else
      @time_parse_proc = Proc.new {|str| Fluent::EventTime.from_time(Time.at(str.to_f)) }
    end
  end

  @parser = setup_parser(conf)
end

#run(io) ⇒ Object 



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# File 'lib/fluent/plugin/in_exec.rb', line 121

def run(io)
  @parser.call(io)
end

#setup_parser(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_exec.rb', line 91

def setup_parser(conf)
  case @format
  when 'tsv'
    if @keys.empty?
      raise Fluent::ConfigError, "keys option is required on exec input for tsv format"
    end
    Fluent::ExecUtil::TSVParser.new(@keys, method(:on_message))
  when 'json'
    Fluent::ExecUtil::JSONParser.new(method(:on_message))
  when 'msgpack'
    Fluent::ExecUtil::MessagePackParser.new(method(:on_message))
  else
    Fluent::ExecUtil::TextParserWrapperParser.new(conf, method(:on_message))
  end
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_exec.rb', line 107

def start
  super

  if @run_interval
    child_process_execute(:exec_input, @command, interval: @run_interval, mode: [:read]) do |io|
      run(io)
    end
  else
    child_process_execute(:exec_input, @command, immediate: true, mode: [:read]) do |io|
      run(io)
    end
  end
end