Class: Taskr::Models::LogEntry

Inherits:

Base

• Object
• Base
• Taskr::Models::LogEntry

Defined in:

lib/taskr/models.rb

Defined Under Namespace

Classes: ActionLogger

Class Method Summary

• .log(level, action_or_task, data) ⇒ Object
• .logger_for_action(action) ⇒ Object

  Produces a Logger-like class that will create log entries for the given TaskAction.

• .send_snmp_trap(level, task, action, data) ⇒ Object

Class Method Details

.log(level, action_or_task, data) ⇒ Object

# File 'lib/taskr/models.rb', line 234

def log(level, action_or_task, data)
  level = level.upcase
  if action_or_task.kind_of? TaskAction
    action = action_or_task
    task = action.task
  elsif action_or_task.kind_of? Task
    action = nil
    task = action_or_task
  elsif action_or_task.kind_of? Integer
    action = TaskAction.find(action_or_task)
    task = action.task
  elsif action_or_task.kind_of? Taskr::Actions::Base
    action = action_or_task.task_action
    task = action.task
  else
    raise ArgumentError, "#{action_or_task.inspect} is not a valid Task or TaskAction!"
  end
  
  threshold = Taskr::Conf[:task_log][:level].upcase if Taskr::Conf[:task_log] && Taskr::Conf[:task_log][:level]
  
  if threshold.blank? || 
      ['DEBUG', 'INFO', 'WARN', 'ERROR'].index(threshold) <= ['DEBUG', 'INFO', 'WARN', 'ERROR'].index(level) 
    LogEntry.create(
      :level => level,
      :timestamp => Time.now,
      :task => task,
      :task_action => action,
      :data => data
    )
  end
  
  # Send SNMP traps through net-snmp if Taskr is configured to send them.
  if Taskr::Conf[:snmp] && Taskr::Conf[:snmp][:send_traps]
    send_snmp_trap(level, task, action, data)
  end
end

.logger_for_action(action) ⇒ Object

Produces a Logger-like class that will create log entries for the given TaskAction. The returned object exploses behaviour much like a standard Ruby Logger, so that it can be used in place of a Logger when necessary.

# File 'lib/taskr/models.rb', line 274

def logger_for_action(action)
  ActionLogger.new(action)
end

.send_snmp_trap(level, task, action, data) ⇒ Object

# File 'lib/taskr/models.rb', line 284

def send_snmp_trap(level, task, action, data)
  snmp_community = Taskr::Conf[:snmp][:community]
  enterprise_oid = Taskr::Conf[:snmp][:enterprise_oid] || '1.3.6.1.4.1.55555.7007'
  to_host        = Taskr::Conf[:snmp][:to_host]
  snmp_persistent_dir = Taskr::Conf[:snmp][:snmp_persistent_dir] || '/tmp'
  my_host        = ENV['HOSTNAME'] || `hostname`.strip || 'taskr'
  
  
  task_oid = '1.3.6.1.4.1.55555.7007.1'
  task_typ = 's'
  task_val = task.to_s.gsub(/"/, '\"')
  
  
  # see http://www.oid-info.com/get/1.3.6.1.4.1.9.5.1.14.4.1.2
  level_oid = '1.3.6.1.4.1.9.5.1.14.4.1.2'
  level_typ = 'i'
  case level
  when 'DEBUG'  then level_val = 8
  when 'INFO'   then level_val = 7
  when 'WARN'   then level_val = 5
  when 'ERROR'  then level_val = 4
  end

  # see http://www.oid-info.com/get/1.3.6.1.4.1.9.9.41.1.2.3.1.4
  sevr_oid = '1.3.6.1.4.1.9.9.41.1.2.3.1.4'
  sevr_typ = 's'
  sevr_val = level
  
  # TODO: make msg format configurable
  msg = ("Taskr #{level} on task #{task}[#{action}]: #{data}").gsub(/"/, '\"')
  
  # see http://www.oid-info.com/get/1.3.6.1.4.1.9.9.41.1.2.3.1.5
  msg_oid = '1.3.6.1.4.1.9.9.41.1.2.3.1.5'
  msg_typ = 's'
  msg_val = msg
  
  cmd = %{snmptrap -v 1 -c #{snmp_community} #{to_host} #{enterprise_oid} #{my_host} 6 #{level_val} '' \
#{level_oid} #{level_typ} "#{level_val}" \
#{sevr_oid} #{sevr_typ} "#{sevr_val}" \
#{task_oid} #{task_typ} "#{task_val}" \
#{msg_oid} #{msg_typ} "#{msg_val}"}
  
  # Band-aid fix for bug in Net-SNMP.
  # See http://sourceforge.net/tracker/index.php?func=detail&aid=1588455&group_id=12694&atid=112694
  ENV['SNMP_PERSISTENT_DIR'] ||= snmp_persistent_dir
  
  $LOG.debug "SENDING SNMP TRAP: #{cmd}"
  
  `#{cmd}`
end