Class: Oxidized::Node

Inherits:
Object
  • Object
show all
Includes:
SemanticLogger::Loggable
Defined in:
lib/oxidized/node.rb,
lib/oxidized/node/stats.rb

Defined Under Namespace

Classes: JobStruct, Stats

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opt) ⇒ Node

opt is a hash with the node parameters given in the source (:name, :group, :ip…)



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# File 'lib/oxidized/node.rb', line 15

def initialize(opt)
  logger.debug 'resolving DNS for %s...' % opt[:name]
  # remove the prefix if an IP Address is provided with one as IPAddr converts it to a network address.
  ip_addr, = opt[:ip].to_s.split("/")
  logger.debug 'IPADDR %s' % ip_addr.to_s
  @name = opt[:name]
  @ip = IPAddr.new(ip_addr).to_s rescue nil
  @ip ||= Resolv.new.getaddress(@name) if Oxidized.config.resolve_dns?
  @ip ||= @name
  @group = opt[:group]
  @model = resolve_model opt
  @input = resolve_input opt
  @output = resolve_output opt
  @auth = resolve_auth opt
  @prompt = resolve_prompt opt
  @timeout = resolve_timeout opt
  @vars = opt[:vars] || {}
  @stats = Stats.new
  @retry = 0
  @repo = resolve_repo opt
  @err_type = nil
  @err_reason = nil

  # model instance needs to access node instance
  @model.node = self
end

Instance Attribute Details

#auth ⇒ Object (readonly)

Returns the value of attribute auth.



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# File 'lib/oxidized/node.rb', line 10

def auth
  @auth
end

#email ⇒ Object

Returns the value of attribute email.



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# File 'lib/oxidized/node.rb', line 11

def email
  @email
end

#err_reason ⇒ Object

Returns the value of attribute err_reason.



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# File 'lib/oxidized/node.rb', line 11

def err_reason
  @err_reason
end

#err_type ⇒ Object

Returns the value of attribute err_type.



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# File 'lib/oxidized/node.rb', line 11

def err_type
  @err_type
end

#from ⇒ Object

Returns the value of attribute from.



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# File 'lib/oxidized/node.rb', line 11

def from
  @from
end

#group ⇒ Object (readonly)

Returns the value of attribute group.



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# File 'lib/oxidized/node.rb', line 10

def group
  @group
end

#input ⇒ Object (readonly)

Returns the value of attribute input.



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# File 'lib/oxidized/node.rb', line 10

def input
  @input
end

#ip ⇒ Object (readonly)

Returns the value of attribute ip.



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# File 'lib/oxidized/node.rb', line 10

def ip
  @ip
end

#last ⇒ Object

Returns the value of attribute last.



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# File 'lib/oxidized/node.rb', line 10

def last
  @last
end

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/oxidized/node.rb', line 10

def model
  @model
end

#msg ⇒ Object

Returns the value of attribute msg.



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# File 'lib/oxidized/node.rb', line 11

def msg
  @msg
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/oxidized/node.rb', line 10

def name
  @name
end

#output ⇒ Object (readonly)

Returns the value of attribute output.



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# File 'lib/oxidized/node.rb', line 10

def output
  @output
end

#prompt ⇒ Object (readonly)

Returns the value of attribute prompt.



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# File 'lib/oxidized/node.rb', line 10

def prompt
  @prompt
end

#repo ⇒ Object (readonly)

Returns the value of attribute repo.



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# File 'lib/oxidized/node.rb', line 10

def repo
  @repo
end

#retry ⇒ Object

Returns the value of attribute retry.



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# File 'lib/oxidized/node.rb', line 11

def retry
  @retry
end

#running ⇒ Object Also known as: running?

Returns the value of attribute running.



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# File 'lib/oxidized/node.rb', line 11

def running
  @running
end

#stats ⇒ Object

Returns the value of attribute stats.



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# File 'lib/oxidized/node.rb', line 11

def stats
  @stats
end

#timeout ⇒ Object (readonly)

Returns the value of attribute timeout.



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# File 'lib/oxidized/node.rb', line 10

def timeout
  @timeout
end

#user ⇒ Object

Returns the value of attribute user.



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# File 'lib/oxidized/node.rb', line 11

def user
  @user
end

#vars ⇒ Object (readonly)

Returns the value of attribute vars.



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# File 'lib/oxidized/node.rb', line 10

def vars
  @vars
end

Instance Method Details

#modified ⇒ Object 



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# File 'lib/oxidized/node.rb', line 150

def modified
  @stats.update_mtime
end

#reset ⇒ Object 



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# File 'lib/oxidized/node.rb', line 145

def reset
  @user = @email = @msg = @from = nil
  @retry = 0
end

#run ⇒ Object 



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# File 'lib/oxidized/node.rb', line 42

def run
  status = :fail
  config = nil
  @input.each do |input|
    # don't try input if model is missing config block, we may need strong config to class_name map
    cfg_name = input.to_s.split('::').last.downcase
    next unless @model.cfg[cfg_name] && (not @model.cfg[cfg_name].empty?)

    @model.input = input = input.new
    if (config = run_input(input))
      logger.debug "#{input.class.name} ran for #{name} successfully"
      status = :success
      break
    else
      logger.debug "#{input.class.name} failed for #{name}"
      status = :no_connection
    end
  end
  logger.error "No suitable input found for #{name}" unless @model.input

  @model.input = nil
  [status, config]
end

#run_input(input) ⇒ Object 



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# File 'lib/oxidized/node.rb', line 66

def run_input(input)
  rescue_fail = {}
  [input.class::RESCUE_FAIL, input.class.superclass::RESCUE_FAIL].each do |hash|
    hash.each do |level, errors|
      errors.each do |err|
        rescue_fail[err] = level
      end
    end
  end
  begin
    input.connect(self) && input.get
  rescue *rescue_fail.keys => err
    resc = ''
    unless (level = rescue_fail[err.class])
      resc  = err.class.ancestors.find { |e| rescue_fail.has_key?(e) }
      level = rescue_fail[resc]
      resc  = " (rescued #{resc})"
    end
    logger.send(level, '%s raised %s%s with msg "%s"' % [ip, err.class, resc, err.message])
    @err_type = err.class.to_s
    @err_reason = err.message.to_s
    false
  rescue StandardError => e
    # Send a message in debug mode in case we are not able to create a crashfile
    logger.error "#{ip} raised #{e.class} with msg #{e.message}, creating crashfile"
    unless Oxidized.config.crash.directory?
      logger.error "Cannot create crashfile for exception", e
      return false
    end

    crashdir  = Oxidized.config.crash.directory
    crashfile = Oxidized.config.crash.hostnames? ? name : ip.to_s
    FileUtils.mkdir_p(crashdir) unless File.directory?(crashdir)

    File.open File.join(crashdir, crashfile), 'w' do |fh|
      fh.puts Time.now.utc
      fh.puts e.message + ' [' + e.class.to_s + ']'
      fh.puts '-' * 50
      fh.puts e.backtrace
    end
    logger.error '%s raised %s with msg "%s", %s saved' % [ip, e.class, e.message, crashfile]
    @err_type = e.class.to_s
    @err_reason = e.message.to_s
    false
  end
end

#serialize ⇒ Object 



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# File 'lib/oxidized/node.rb', line 113

def serialize
  h = {
    name:      @name,
    full_name: @name,
    ip:        @ip,
    group:     @group,
    model:     @model.class.to_s,
    last:      nil,
    vars:      @vars,
    mtime:     @stats.mtime
  }
  h[:full_name] = [@group, @name].join('/') if @group
  if @last
    h[:last] = {
      start:  @last.start,
      end:    @last.end,
      status: @last.status,
      time:   @last.time
    }
  end
  h
end