Class: ManageIQ::Loggers::Journald

Inherits:
Base
  • Object
show all
Defined in:
lib/manageiq/loggers/journald.rb

Defined Under Namespace

Classes: Formatter

Constant Summary

Constants inherited from Base

Base::MAX_LOG_LINE_LENGTH

Instance Attribute Summary

Attributes inherited from Base

#logdev

Instance Method Summary collapse

Methods inherited from Base

#level, #log_backtrace, #log_hashes, log_hashes, log_hashes_filter, #log_hashes_filter, #log_hashes_filter=, log_hashes_filter=, #silence, #wrap, wrap

Constructor Details

#initialize(_logdev = nil, *_, **_) ⇒ Journald

Create and return a new ManageIQ::Loggers::Journald instance. The arguments to the initializer can be ignored unless you’re multicasting.

Internally we set our own formatter, and automatically set the progname option to ‘manageiq’ if not specified.



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# File 'lib/manageiq/loggers/journald.rb', line 10

def initialize(_logdev = nil, *_, **_)
  require "systemd-journal"
  super
  @formatter = Formatter.new
  @progname ||= 'manageiq'
end

Instance Method Details

#add(severity, message = nil, progname = nil) ⇒ Object

Redefine this method from the core Logger class. Internally this is the method used when .info, .warn, etc are called.



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# File 'lib/manageiq/loggers/journald.rb', line 27

def add(severity, message = nil, progname = nil)
  severity ||= Logger::UNKNOWN
  return true if severity < @level

  progname ||= @progname

  if message.nil?
    if block_given?
      message = yield
    else
      message = progname
      progname = @progname
    end
  end

  message = formatter.call(format_severity(severity), nil, progname, message)

  # The call stack is different depending on if we are using the newer
  # ActiveSupport::BroadcastLogger or the older ActiveSupport::Logger.broadcast
  # so we have to account for that difference when walking up the caller_locations
  # to get the "real" logging location.
  callstack_start = ActiveSupport.gem_version >= Gem::Version.new("7.1.0") ? 7 : 3
  caller_object = caller_locations(callstack_start, 1).first

  Systemd::Journal.message(
    :message           => message,
    :priority          => log_level_map[severity],
    :syslog_identifier => progname,
    :code_line         => caller_object.lineno,
    :code_file         => caller_object.absolute_path,
    :code_func         => caller_object.label
  )
end

#filename ⇒ Object

Comply with the VMDB::Logger interface. For a filename we simply use the string ‘journald’ since we’re not using a backing file directly.



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# File 'lib/manageiq/loggers/journald.rb', line 20

def filename
  "journald"
end