Class: FFWD::Plugin::Collectd::TypesDB

Inherits:
Object
  • Object
show all
Defined in:
lib/ffwd/plugin/collectd/types_db.rb

Overview

A minimal implementation of a reader for collectd’s types.db

collectd.org/documentation/manpages/types.db.5.shtml

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(database) ⇒ TypesDB

Returns a new instance of TypesDB.



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# File 'lib/ffwd/plugin/collectd/types_db.rb', line 21

def initialize database
  @database = database
end

Class Method Details

.open(path) ⇒ Object 



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# File 'lib/ffwd/plugin/collectd/types_db.rb', line 33

def self.open path
  return nil unless File.file? path

  database = {}

  File.open(path) do |f|
    f.readlines.each do |line|
      next if line.start_with? "#"
      parts = line.split(/[\t ]+/, 2)
      next unless parts.size == 2
      key, value_specs = parts
      value_specs = value_specs.split(",").map(&:strip)
      value_specs = value_specs.map{|s| s.split(':')}
      database[key] = value_specs
    end
  end

  new database
end

Instance Method Details

#get_name(key, i) ⇒ Object 



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# File 'lib/ffwd/plugin/collectd/types_db.rb', line 25

def get_name key, i
  if entry = @database[key] and spec = entry[i]
    return spec[0]
  end

  return i.to_s
end