Class: Puppet::Util::Log

Inherits:
Object show all
Extended by:
Puppet::Util, ClassGen
Includes:
Network::FormatSupport, Puppet::Util, PsychSupport, Tagging
Defined in:
lib/puppet/util/log.rb

Overview

Pass feedback to the user. Log levels are modeled after syslog’s, and it is expected that that will be the most common log destination. Supports multiple destinations, one of which is a remote server.

Defined Under Namespace

Classes: Destination

Constant Summary

Constants included from Puppet::Util

AbsolutePathPosix, AbsolutePathWindows, DEFAULT_POSIX_MODE, DEFAULT_WINDOWS_MODE

Constants included from POSIX

POSIX::LOCALE_ENV_VARS, POSIX::USER_ENV_VARS

Constants included from SymbolicFileMode

SymbolicFileMode::SetGIDBit, SymbolicFileMode::SetUIDBit, SymbolicFileMode::StickyBit, SymbolicFileMode::SymbolicMode, SymbolicFileMode::SymbolicSpecialToBit

Constants included from Tagging

Tagging::ValidTagRegex

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Puppet::Util

absolute_path?, benchmark, chuser, clear_environment, default_env, deterministic_rand, deterministic_rand_int, exit_on_fail, get_env, get_environment, logmethods, merge_environment, path_to_uri, pretty_backtrace, replace_file, safe_posix_fork, set_env, symbolizehash, thinmark, uri_to_path, which, withenv, withumask

Methods included from POSIX

#get_posix_field, #gid, #idfield, #methodbyid, #methodbyname, #search_posix_field, #uid

Methods included from SymbolicFileMode

#normalize_symbolic_mode, #symbolic_mode_to_int, #valid_symbolic_mode?

Methods included from ClassGen

genclass, genmodule, rmclass

Methods included from MethodHelper

#requiredopts, #set_options, #symbolize_options

Methods included from Network::FormatSupport

included, #mime, #render, #support_format?, #to_json, #to_msgpack

Methods included from Tagging

#merge_into, #merge_tags, #raw_tagged?, #set_tags, #tag, #tag_if_valid, #tagged?, #tags, #tags=

Methods included from PsychSupport

#encode_with, #init_with

Constructor Details

#initialize(args) ⇒ Log

Returns a new instance of Log.



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# File 'lib/puppet/util/log.rb', line 276

def initialize(args)
  self.level = args[:level]
  self.message = args[:message]
  self.source = args[:source] || "Puppet"

  @time = Time.now

  if tags = args[:tags]
    tags.each { |t| self.tag(t) }
  end

  # Don't add these unless defined (preserve 3.x API as much as possible)
  [:file, :line, :pos, :issue_code, :environment, :node, :backtrace].each do |attr|
    next unless value = args[attr]
    send(attr.to_s + '=', value)
  end

  Log.newmessage(self)
end

Class Attribute Details

.desttypes ⇒ Object (readonly) 



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# File 'lib/puppet/util/log.rb', line 49

def desttypes
  @desttypes
end

Instance Attribute Details

#backtrace ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def backtrace
  @backtrace
end

#environment ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def environment
  @environment
end

#file ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def file
  @file
end

#issue_code ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def issue_code
  @issue_code
end

#level ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 274

def level
  @level
end

#line ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def line
  @line
end

#message ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 274

def message
  @message
end

#node ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def node
  @node
end

#pos ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def pos
  @pos
end

#remote ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def remote
  @remote
end

#source ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def source
  @source
end

#time ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 273

def time
  @time
end

Class Method Details

.autoflush=(v) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 76

def Log.autoflush=(v)
  @destinations.each do |type, dest|
    dest.autoflush = v if dest.respond_to?(:autoflush=)
  end
end

.close(destination) ⇒ Object

Reset log to basics. Basically just flushes and closes files and undefs other objects.



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# File 'lib/puppet/util/log.rb', line 54

def Log.close(destination)
  if @destinations.include?(destination)
    @destinations[destination].flush if @destinations[destination].respond_to?(:flush)
    @destinations[destination].close if @destinations[destination].respond_to?(:close)
    @destinations.delete(destination)
  end
end

.close_all ⇒ Object

Raises:



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# File 'lib/puppet/util/log.rb', line 62

def self.close_all
  destinations.keys.each { |dest|
    close(dest)
  }
  raise Puppet::DevError.new("Log.close_all failed to close #{@destinations.keys.inspect}") if !@destinations.empty?
end

.create(hash) ⇒ Object

Create a new log message. The primary role of this method is to avoid creating log messages below the loglevel.

Raises:



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# File 'lib/puppet/util/log.rb', line 84

def Log.create(hash)
  raise Puppet::DevError, "Logs require a level" unless hash.include?(:level)
  raise Puppet::DevError, "Invalid log level #{hash[:level]}" unless @levels.index(hash[:level])
  @levels.index(hash[:level]) >= @loglevel ? Puppet::Util::Log.new(hash) : nil
end

.destinations ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 90

def Log.destinations
  @destinations
end

.eachlevel ⇒ Object

Yield each valid level in turn



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# File 'lib/puppet/util/log.rb', line 95

def Log.eachlevel
  @levels.each { |level| yield level }
end

.flush ⇒ Object

Flush any log destinations that support such operations.



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# File 'lib/puppet/util/log.rb', line 70

def Log.flush
  @destinations.each { |type, dest|
    dest.flush if dest.respond_to?(:flush)
  }
end

.flushqueue ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 184

def Log.flushqueue
  return unless @destinations.size >= 1
  @queued.each do |msg|
    Log.newmessage(msg)
  end
  @queued.clear
end

.force_flushqueue ⇒ Object

Flush the logging queue. If there are no destinations available,

adds in a console logger before flushing the queue.

This is mainly intended to be used as a last-resort attempt

to ensure that logging messages are not thrown away before
the program is about to exit--most likely in a horrific
error scenario.

Returns:

  • nil



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# File 'lib/puppet/util/log.rb', line 199

def Log.force_flushqueue()
  if (@destinations.empty? and !(@queued.empty?))
    newdestination(:console)
  end
  flushqueue
end

.from_data_hash(data) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 242

def self.from_data_hash(data)
  obj = allocate
  obj.initialize_from_hash(data)
  obj
end

.level ⇒ Object

Return the current log level.



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# File 'lib/puppet/util/log.rb', line 100

def Log.level
  @levels[@loglevel]
end

.level=(level) ⇒ Object

Set the current log level.

Raises:



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# File 'lib/puppet/util/log.rb', line 105

def Log.level=(level)
  level = level.intern unless level.is_a?(Symbol)

  raise Puppet::DevError, "Invalid loglevel #{level}" unless @levels.include?(level)

  @loglevel = @levels.index(level)

  # Enable or disable Facter debugging
  Facter.debugging(level == :debug) if Facter.respond_to? :debugging
end

.levels ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 116

def Log.levels
  @levels.dup
end

.log_func(scope, level, vals) ⇒ Object

Log output using scope and level

Parameters:



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# File 'lib/puppet/util/log.rb', line 254

def self.log_func(scope, level, vals)
  # NOTE: 3x, does this: vals.join(" ")
  # New implementation uses the evaluator to get proper formatting per type
  vals = vals.map { |v| Puppet::Pops::Evaluator::EvaluatorImpl.new.string(v, scope) }

  # Bypass Puppet.<level> call since it picks up source from "self" which is not applicable in the 4x
  # Function API.
  # TODO: When a function can obtain the file, line, pos of the call merge those in (3x supports
  #       options :file, :line. (These were never output when calling the 3x logging functions since
  #       3x scope does not know about the calling location at that detailed level, nor do they
  #       appear in a report to stdout/error when included). Now, the output simply uses scope (like 3x)
  #       as this is good enough, but does not reflect the true call-stack, but is a rough estimate
  #       of where the logging call originates from).
  #
  Puppet::Util::Log.create({:level => level, :source => scope, :message => vals.join(" ")})
  nil
end

.newdestination(dest) ⇒ Object

Create a new log destination.

Raises:



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# File 'lib/puppet/util/log.rb', line 121

def Log.newdestination(dest)
  # Each destination can only occur once.
  if @destinations.find { |name, obj| obj.name == dest }
    return
  end

  name, type = @desttypes.find do |name, klass|
    klass.match?(dest)
  end

  if type.respond_to?(:suitable?) and not type.suitable?(dest)
    return
  end

  raise Puppet::DevError, "Unknown destination type #{dest}" unless type

  begin
    if type.instance_method(:initialize).arity == 1
      @destinations[dest] = type.new(dest)
    else
      @destinations[dest] = type.new
    end
    flushqueue
    @destinations[dest]
  rescue => detail
    Puppet.log_exception(detail)

    # If this was our only destination, then add the console back in.
    newdestination(:console) if @destinations.empty? and (dest != :console and dest != "console")
  end
end

.newdesttype(name, options = {}, &block) ⇒ Object

Create a new destination type.



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# File 'lib/puppet/util/log.rb', line 23

def self.newdesttype(name, options = {}, &block)

  dest = genclass(
    name,
    :parent     => Puppet::Util::Log::Destination,
    :prefix     => "Dest",
    :block      => block,
    :hash       => @desttypes,
    :attributes => options
  )
  dest.match(dest.name)

  dest
end

.newmessage(msg) ⇒ Object

Route the actual message. FIXME There are lots of things this method should do, like caching and a bit more. It’s worth noting that there’s a potential for a loop here, if the machine somehow gets the destination set as itself.



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# File 'lib/puppet/util/log.rb', line 170

def Log.newmessage(msg)
  return if @levels.index(msg.level) < @loglevel

  queuemessage(msg) if @destinations.length == 0

  @destinations.each do |name, dest|
    dest.handle(msg)
  end
end

.queuemessage(msg) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 180

def Log.queuemessage(msg)
  @queued.push(msg)
end

.reopen ⇒ Object

Reopen all of our logs.



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# File 'lib/puppet/util/log.rb', line 211

def Log.reopen
  Puppet.notice "Reopening log files"
  types = @destinations.keys
  @destinations.each { |type, dest|
    dest.close if dest.respond_to?(:close)
  }
  @destinations.clear
  # We need to make sure we always end up with some kind of destination
  begin
    types.each { |type|
      Log.newdestination(type)
    }
  rescue => detail
    if @destinations.empty?
      Log.setup_default
      Puppet.err detail.to_s
    end
  end
end

.sendlevel?(level) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/util/log.rb', line 206

def Log.sendlevel?(level)
  @levels.index(level) >= @loglevel
end

.setup_default ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 231

def self.setup_default
  Log.newdestination(
    (Puppet.features.syslog?   ? :syslog   :
    (Puppet.features.eventlog? ? :eventlog : Puppet[:puppetdlog])))
end

.validlevel?(level) ⇒ Boolean

Is the passed level a valid log level?

Returns:

  • (Boolean) 


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# File 'lib/puppet/util/log.rb', line 238

def self.validlevel?(level)
  @levels.include?(level)
end

.with_destination(destination, &block) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 153

def Log.with_destination(destination, &block)
  if @destinations.include?(destination)
    yield
  else
    newdestination(destination)
    begin
      yield
    ensure
      close(destination)
    end
  end
end

Instance Method Details

#initialize_from_hash(data) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 296

def initialize_from_hash(data)
  @level = data['level'].intern
  @message = data['message']
  @source = data['source']
  @tags = Puppet::Util::TagSet.new(data['tags'])
  @time = data['time']
  if @time.is_a? String
    @time = Time.parse(@time)
  end
  # Don't add these unless defined (preserve 3.x API as much as possible)
  %w(file line pos issue_code environment node backtrace).each do |name|
    next unless value = data[name]
    send(name + '=', value)
  end
end

#to_data_hash ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 316

def to_data_hash
  {
    'level' => @level,
    'message' => to_s,
    'source' => @source,
    'tags' => @tags.to_a,
    'time' => @time.iso8601(9),
    'file' => @file,
    'line' => @line,
  }
end

#to_hash ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 312

def to_hash
  self.to_data_hash
end

#to_pson(*args) ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 343

def to_pson(*args)
  to_data_hash.to_pson(*args)
end

#to_report ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 375

def to_report
  "#{time} #{source} (#{level}): #{to_s}"
end

#to_s ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 379

def to_s
  msg = message

  # Issue based messages do not have details in the message. It
  # must be appended here
  unless issue_code.nil?
    msg = "Could not parse for environment #{environment}: #{msg}" unless environment.nil?
    if file && line && pos
      msg = "#{msg} at #{file}:#{line}:#{pos}"
    elsif file and line
      msg = "#{msg}  at #{file}:#{line}"
    elsif line && pos
      msg = "#{msg}  at line #{line}:#{pos}"
    elsif line
      msg = "#{msg}  at line #{line}"
    elsif file
      msg = "#{msg}  in #{file}"
    end
    msg = "#{msg} on node #{node}" unless node.nil?
    if @backtrace.is_a?(Array)
      msg += "\n"
      msg += @backtrace.join("\n")
    end
  end
  msg
end

#to_structured_hash ⇒ Object 



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# File 'lib/puppet/util/log.rb', line 328

def to_structured_hash
  hash = {
    'level' => @level,
    'message' => @message,
    'source' => @source,
    'tags' => @tags.to_a,
    'time' => @time.iso8601(9),
  }
  %w(file line pos issue_code environment node backtrace).each do |name|
    attr_name = "@#{name}"
    hash[name] = instance_variable_get(attr_name) if instance_variable_defined?(attr_name)
  end
  hash
end