Module: Eye::Process::Children

Included in:
Eye::Process
Defined in:
lib/eye/process/children.rb

Instance Method Summary collapse

Instance Method Details

#add_childrenObject


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# File 'lib/eye/process/children.rb', line 3

def add_children
  add_or_update_children
end

#add_or_update_childrenObject


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# File 'lib/eye/process/children.rb', line 7

def add_or_update_children
  return unless self[:monitor_children]
  return unless self.up?
  return if @updating_children
  @updating_children = true

  unless self.pid
    warn "can't add children; pid not set"
    return
  end

  now_children = Eye::SystemResources.children(self.pid)
  new_children = []
  exist_children = []

  now_children.each do |child_pid|
    if self.children[child_pid]
      exist_children << child_pid
    else
      new_children << child_pid
    end
  end

  removed_children = self.children.keys - now_children

  if new_children.present?
    new_children.each do |child_pid|
      cfg = self[:monitor_children].try :update, :notify => self[:notify]
      self.children[child_pid] = Eye::ChildProcess.new(child_pid, cfg, logger.prefix, self.pid)
    end
  end

  if removed_children.present?
    removed_children.each{|child_pid| remove_child(child_pid) }
  end

  h = {:new => new_children.size, :removed => removed_children.size, :exists => exist_children.size }
  debug { "children info: #{ h.inspect }" }

  @updating_children = false
  h
end

#clear_child(child_pid) ⇒ Object


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# File 'lib/eye/process/children.rb', line 58

def clear_child(child_pid)
  child = self.children.delete(child_pid)
  child.destroy if child && child.alive?
end

#remove_child(child_pid) ⇒ Object


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# File 'lib/eye/process/children.rb', line 54

def remove_child(child_pid)
  clear_child(child_pid)
end

#remove_childrenObject


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# File 'lib/eye/process/children.rb', line 50

def remove_children
  children.each_key { |child_pid| clear_child(child_pid) }
end