Class: Fluent::Plugin::FactorInput

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

Instance Method Summary collapse

Instance Method Details

#before_shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 66

def before_shutdown
  super
  gather_factor if @run_at_shutdown
end

#configure(conf) ⇒ Object 



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

def configure(conf)
  super

  if !@run_interval && @run_at_start
    raise ConfigError, "'run_at_start' option needs 'run_interval' option"
  end

  factor_keys = [
    "hostname",
    "operatingsystem",
    "kernel",
    "processors",
    "memory",
    "volumes",
    "interfaces",
    "is_virtual",
  ]

  @factors = @factors.to_h

  if @factors.empty?
    factor_keys.each do |key|
      @factors[key] = true
    end
  end

  if @factors.select { |k,v| v == true }.empty?
    raise ConfigError, "one or more factor are required"
  end
end

#gather_factor ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 89

def gather_factor
  begin
    record = {}
    @factors.each do |factor, enabled|
      record[factor] = send(factor) if enabled
    end
    router.emit(@tag, Fluent::EventTime.now, record)
  rescue => e
    router.emit_error_event(@tag, Fluent::EventTime.now, record, e)
  end
end

#hostname ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 101

def hostname
  Facter.value(:hostname)
end

#interfaces ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 143

def interfaces
  interfaces = []
  interface_names = Facter.value(:interfaces).split(/,/)
  if interface_names
    interface_names.each do |if_name|
      next if if_name == "lo"
      interfaces.push({
        "name" => if_name,
        "ipaddress" => Facter.value("ipaddress_#{if_name}"),
        "netmask" => Facter.value("netmask_#{if_name}"),
        "macaddress" => Facter.value("macaddress_#{if_name}"),
      })
    end
  end
  interfaces
end

#is_virtual ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 160

def is_virtual
  Facter.value(:is_virtual)
end

#kernel ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 113

def kernel
  {
    "name" => Facter.value(:kernel),
    "release" => Facter.value(:kernelrelease),
  }
end

#memory ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 124

def memory
  {
    "size" => Facter.value(:memorysize_mb )
  }
end

#operatingsystem ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 105

def operatingsystem
  {
    "name" => Facter.value(:operatingsystem),
    "version" => Facter.value(:operatingsystemrelease),
    "family" => Facter.value(:osfamily),
  }
end

#processors ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 120

def processors
  Facter.value(:processors)
end

#run ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 77

def run
  gather_factor
end

#run_periodic ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 81

def run_periodic
  gather_factor if @run_at_start
  while true
    sleep @run_interval
    gather_factor
  end
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 71

def shutdown
  super
  @thread.terminate
  @thread.join
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 56

def start
  super
  if @run_interval
    @finished = false
    @thread = Thread.new(&method(:run_periodic))
  else
    @thread = Thread.new(&method(:run))
  end
end

#volumes ⇒ Object 



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# File 'lib/fluent/plugin/in_factor.rb', line 130

def volumes
  volumes = []
  blockdevice_names = Facter.value(:blockdevices).split(/,/)
  blockdevice_names.each do |device_name|
    next if device_name !~ /(hd.*|sd.*|md.*)/
    volumes.push({
      "name" => device_name,
      "size" => Facter.value("blockdevice_#{device_name}_size") / 1024 / 1024 / 1024,
    })
  end
  volumes
end