Module: Puppet::Util::Logging

Defined Under Namespace

Classes: DeprecationWarning

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.setup_facter_logging!Object

Sets up Facter logging. This method causes Facter output to be forwarded to Puppet.


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# File 'lib/puppet/util/logging.rb', line 244

def self.setup_facter_logging!
  # Only recent versions of Facter support this feature
  return false unless Facter.respond_to? :on_message

  # The current Facter log levels are: :trace, :debug, :info, :warn, :error, and :fatal.
  # Convert to the corresponding levels in Puppet
  Facter.on_message do |level, message|
    case level
    when :trace, :debug
      level = :debug
    when :info
      # Same as Puppet
    when :warn
      level = :warning
    when :error
      level = :err
    when :fatal
      level = :crit
    else
      next
    end
    Puppet::Util::Log.create({:level => level, :source => 'Facter', :message => message})
    nil
  end
  true
end

Instance Method Details

#clear_deprecation_warningsObject


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# File 'lib/puppet/util/logging.rb', line 203

def clear_deprecation_warnings
  $unique_warnings.clear if $unique_warnings
  $deprecation_warnings.clear if $deprecation_warnings
end

#debug(*args) ⇒ Object

Output a debug log message if debugging is on (but only then) If the output is anything except a static string, give the debug a block - it will be called with all other arguments, and is expected to return the single string result.

Use a block at all times for increased performance.

Examples:

This takes 40% of the time compared to not using a block

Puppet.debug { "This is a string that interpolated #{x} and #{y} }"

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# File 'lib/puppet/util/logging.rb', line 34

def debug(*args)
  return nil unless Puppet::Util::Log.level == :debug
  if block_given?
    send_log(:debug, yield(*args))
  else
    send_log(:debug, args.join(" "))
  end
end

#deprecation_warning(message, key = nil) ⇒ Object

Logs a warning indicating that the Ruby code path is deprecated. Note that this method keeps track of the offending lines of code that triggered the deprecation warning, and will only log a warning once per offending line of code. It will also stop logging deprecation warnings altogether after 100 unique deprecation warnings have been logged. Finally, if Puppet includes 'deprecations', it will squelch all warning calls made via this method.


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# File 'lib/puppet/util/logging.rb', line 130

def deprecation_warning(message, key = nil)
  issue_deprecation_warning(message, key, nil, nil, true)
end

#format_exception(exception, message = :default, trace = true) ⇒ Object


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# File 'lib/puppet/util/logging.rb', line 91

def format_exception(exception, message = :default, trace = true)
  arr = []
  case message
  when :default
    arr << exception.message
  when nil
    # don't log anything if they passed a nil; they are just calling for the optional backtrace logging
  else
    arr << message
  end

  if trace and exception.backtrace
    arr << Puppet::Util.pretty_backtrace(exception.backtrace)
  end
  if exception.respond_to?(:original) and exception.original
    arr << _("Wrapped exception:")
    arr << format_exception(exception.original, :default, trace)
  end
  arr.flatten.join("\n")
end

#get_deprecation_offenderObject


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# File 'lib/puppet/util/logging.rb', line 190

def get_deprecation_offender()
  # we have to put this in its own method to simplify testing; we need to be able to mock the offender results in
  # order to test this class, and our framework does not appear to enjoy it if you try to mock Kernel.caller
  #
  # let's find the offending line;  we need to jump back up the stack a few steps to find the method that called
  #  the deprecated method
  if Puppet[:trace]
    caller(3)
  else
    [caller(3, 1).first]
  end
end

#log_and_raise(exception, message) ⇒ Object

Raises:

  • (exception)

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# File 'lib/puppet/util/logging.rb', line 112

def log_and_raise(exception, message)
  log_exception(exception, message)
  raise exception, message + "\n" + exception.to_s, exception.backtrace
end

#log_deprecations_to_file(deprecations_file, pattern = nil) ⇒ Object

utility method that can be called, e.g., from spec_helper config.after, when tracking down calls to deprecated code. Parameters:

deprecations_file

relative or absolute path of a file to log the deprecations to

pattern

(default nil) if specified, will only log deprecations whose message matches the provided pattern


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# File 'lib/puppet/util/logging.rb', line 216

def log_deprecations_to_file(deprecations_file, pattern = nil)
  # this method may get called lots and lots of times (e.g., from spec_helper config.after) without the global
  # list of deprecation warnings being cleared out.  We don't want to keep logging the same offenders over and over,
  # so, we need to keep track of what we've logged.
  #
  # It'd be nice if we could just clear out the list of deprecation warnings, but then the very next spec might
  # find the same offender, and we'd end up logging it again.
  $logged_deprecation_warnings ||= {}

  # Deprecation messages are UTF-8 as they are produced by Ruby
  Puppet::FileSystem.open(deprecations_file, nil, "a:UTF-8") do |f|
    if ($deprecation_warnings) then
      $deprecation_warnings.each do |offender, message|
        if (! $logged_deprecation_warnings.has_key?(offender)) then
          $logged_deprecation_warnings[offender] = true
          if ((pattern.nil?) || (message =~ pattern)) then
            f.puts(message)
            f.puts(offender)
            f.puts()
          end
        end
      end
    end
  end
end

#log_exception(exception, message = :default, options = {}) ⇒ Object

Log an exception via Puppet.err. Will also log the backtrace if Puppet is set. Parameters:

exception

an Exception to log

message

an optional String overriding the message to be logged; by default, we log Exception.message.

If you pass a String here, your string will be logged instead.  You may also pass nil if you don't
wish to log a message at all; in this case it is likely that you are only calling this method in order
to take advantage of the backtrace logging.

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# File 'lib/puppet/util/logging.rb', line 50

def log_exception(exception, message = :default, options = {})
  trace = Puppet[:trace] || options[:trace]
  level = options[:level] || :err
  if message == :default && exception.is_a?(Puppet::ParseErrorWithIssue)
    # Retain all detailed info and keep plain message and stacktrace separate
    backtrace = []
    build_exception_trace(backtrace, exception, trace)
    Puppet::Util::Log.create({
        :level => level,
        :source => log_source,
        :message => exception.basic_message,
        :issue_code => exception.issue_code,
        :backtrace => backtrace.empty? ? nil : backtrace,
        :file => exception.file,
        :line => exception.line,
        :pos => exception.pos,
        :environment => exception.environment,
        :node => exception.node
      }.merge())
  else
    send_log(level, format_exception(exception, message, trace))
  end
end

#puppet_deprecation_warning(message, options = {}) ⇒ Object

Logs a warning whose origin comes from Puppet source rather than somewhere internal within Puppet. Otherwise the same as deprecation_warning()

Either :file and :line and/or :key must be passed.

Options Hash (options):

  • :file (String)

    File we are warning from

  • :line (Integer)

    Line number we are warning from

  • :key (String) — default: :file + :line

    Alternative key used to mark warning as unique

Raises:


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# File 'lib/puppet/util/logging.rb', line 145

def puppet_deprecation_warning(message, options = {})
  key = options[:key]
  file = options[:file]
  line = options[:line]
  #TRANSLATORS the literals ":file", ":line", and ":key" should not be translated
  raise Puppet::DevError, _("Need either :file and :line, or :key") if (key.nil?) && (file.nil? || line.nil?)

  key ||= "#{file}:#{line}"
  issue_deprecation_warning(message, key, file, line, false)
end

#send_log(level, message) ⇒ Object


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# File 'lib/puppet/util/logging.rb', line 10

def send_log(level, message)
  Puppet::Util::Log.create({:level => level, :source => log_source, :message => message}.merge())
end

#warn_once(kind, key, message, file = nil, line = nil, level = :warning) ⇒ Object

Logs a (non deprecation) warning once for a given key.

Either :file and :line and/or :key must be passed.


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# File 'lib/puppet/util/logging.rb', line 168

def warn_once(kind, key, message, file = nil, line = nil, level = :warning)
  return if Puppet[:disable_warnings].include?(kind)
  $unique_warnings ||= {}
  if $unique_warnings.length < 100 then
    if (! $unique_warnings.has_key?(key)) then
      $unique_warnings[key] = message
      call_trace = if file == :default and line == :default
                     # Suppress the file and line number output
                     ''
                   else
                     error_location_str = Puppet::Util::Errors.error_location(file, line)
                     if error_location_str.empty?
                       "\n   " + _('(file & line not available)')
                     else
                       "\n   %{error_location}" % { error_location: error_location_str }
                     end
                   end
      send_log(level, "#{message}#{call_trace}")
    end
  end
end