Class: GRI::TraCollector

Inherits:
Collector show all
Defined in:
lib/gri/tra_collector.rb

Constant Summary

Constants inherited from Collector

Collector::TYPES

Class Attribute Summary collapse

Attributes inherited from Collector

#attached_at, #host, #interval, #loop, #options, #timeout

Instance Method Summary collapse

Methods inherited from Collector

#attach, create, #initialize, #on_detach, #on_error, #on_init, #on_retry, #on_timeout, #sync?

Constructor Details

This class inherits a constructor from GRI::Collector

Class Attribute Details

.db_class ⇒ Object

Returns the value of attribute db_class.



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# File 'lib/gri/tra_collector.rb', line 77

def db_class
  @db_class
end

.gra_dir ⇒ Object

Returns the value of attribute gra_dir.



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# File 'lib/gri/tra_collector.rb', line 76

def gra_dir
  @gra_dir
end

.tra_dir ⇒ Object

Returns the value of attribute tra_dir.



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# File 'lib/gri/tra_collector.rb', line 76

def tra_dir
  @tra_dir
end

.tra_uri ⇒ Object

Returns the value of attribute tra_uri.



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# File 'lib/gri/tra_collector.rb', line 77

def tra_uri
  @tra_uri
end

Instance Method Details

#on_attach ⇒ Object 



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# File 'lib/gri/tra_collector.rb', line 8

def on_attach
  # @loop.detach self if @config['nop']
  dir = "#{self.class.gra_dir}/#{host}"
  Dir.mkdir dir unless File.directory? dir

  db_class = self.class.db_class
  db = (db_class <= RemoteLDB) ? db_class.new(self.class.tra_uri, host) :
    db_class.new("#{self.class.tra_dir}/#{host}")

  @loop.next_tick {
    begin
      update_rrd_dir dir, db, options
    ensure
      @loop.detach self
      db.close
    end
  }
end

#recdump(dir, records) ⇒ Object 



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# File 'lib/gri/tra_collector.rb', line 68

def recdump dir, records
  path = dir + '/.rdump'
  open(path, 'a') {|f|
    records.each {|r| f.puts r.inspect}
  }
end

#update_rrd_dir(dir, db, options) ⇒ Object 



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# File 'lib/gri/tra_collector.rb', line 27

def update_rrd_dir dir, db, options
  data_names = db.get_data_names
  for data_name, interval in data_names
    lu_path = "#{dir}/.lu_#{data_name}"
    lu_time = nil
    lu_pos = nil
    if File.exist? lu_path
      str = File.read(lu_path)
      if str =~ /\A(\d+) (\d+)\Z/
        lu_time = Time.at $1.to_i
        lu_pos = $2.to_i
      end
    end
    lu_time ||= Time.at(0)
    lu_pos ||= 0

    update_p = false
    t = nil
    records = []
    db.get_after(data_name, lu_time, lu_pos) {|t, record, pos|
      if $debug
        ts = t.strftime '%Y-%m-%d %H:%M:%S'
        puts "update #{ts} #{record['_host']} #{record['_key']}"
      end
      record['_interval'] = interval
      records.push record
      update_p = true
      lu_time = t
      lu_pos = pos
      if records.size > 2000
        @cb.call records
        records.clear
      end
    }
    if update_p
      @cb.call records
      open(lu_path, 'w') {|f| f.print "#{lu_time.to_i} #{lu_pos}"}
    end
  end
end