Class: Elastics::Admin::Tasks

Inherits:
Object
  • Object
show all
Defined in:
lib/elastics/admin.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(overrides = {}) ⇒ Tasks

Returns a new instance of Tasks.



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# File 'lib/elastics/admin.rb', line 8

def initialize(overrides={})
  options = Elastics::Utils.env2options *default_options.keys

  options[:size]       = options[:size].to_i       if options[:size]
  options[:timeout]    = options[:timeout].to_i    if options[:timeout]
  options[:batch_size] = options[:batch_size].to_i if options[:batch_size]
  options[:index_map]  = Hash[options[:index_map].split(',').map{|i|i.split(':')}] if options[:index_map] && options[:index_map].is_a?(String)

  @options = default_options.merge(options).merge(overrides)
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/elastics/admin.rb', line 6

def options
  @options
end

Instance Method Details

#default_options ⇒ Object 



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# File 'lib/elastics/admin.rb', line 19

def default_options
  @default_options ||= { :file       => './elastics.dump',
                         :index      => Conf.variables[:index],
                         :type       => Conf.variables[:type],
                         :scroll     => '5m',
                         :size       => 50,
                         :timeout    => 60,
                         :batch_size => 500,
                         :verbose    => true,
                         :index_map  => nil }
end

#dump_to_file(cli = false) ⇒ Object 



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# File 'lib/elastics/admin.rb', line 31

def dump_to_file(cli=false)
  vars = { :index => cli ? options[:index] : (options[:index] || Conf.indices.keys),
           :type  => options[:type] }
  Prompter.say_title "Dumping indices: #{vars[:index].inspect}" if options[:verbose]
  if options[:verbose]
    total_hits  = Elastics.count(vars)['count'].to_i
    total_count = 0
    pbar        = ProgBar.new(total_hits)
    dump_stats  = Hash.new { |hash, key| hash[key] = Hash.new { |h, k| h[k] = 0 } }
    file_size   = 0
  end
  vars.merge! :params => { :scroll => options[:scroll],
                           :size   => options[:size],
                           :fields => '_source,*' }

  file = options[:file].is_a?(String) ? File.open(options[:file], 'wb') : options[:file]
  path = file.path

  Elastics.dump_all(vars) do |batch|
    bulk_string = ''
    batch.each do |document|
      dump_stats[document['_index']][document['_type']] += 1 if options[:verbose]
      bulk_string << Elastics.build_bulk_string(document)
    end
    file.puts bulk_string
    if options[:verbose]
      total_count += batch.size
      pbar.pbar.progress += batch.size
    end
  end
  file_size = file.size if options[:verbose]
  file.close

  if options[:verbose]
    formatted_file_size = file_size.to_s.reverse.gsub(/...(?=.)/, '\&,').reverse
    pbar.pbar.finish unless pbar.pbar.finished?
    Prompter.say_warning "\n***** WARNING: Expected document to dump: #{total_hits}, dumped: #{total_count}. *****" \
         unless total_hits == total_count
    Prompter.say_notice "\nDumped #{total_count} documents to #{path} (size: #{formatted_file_size} bytes)"
    Prompter.say_log dump_stats.to_yaml
  end
end

#load_from_file ⇒ Object 



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# File 'lib/elastics/admin.rb', line 74

def load_from_file
  Configuration.http_client.options[:timeout] = options[:timeout]
  chunk_size  = options[:batch_size] * 2 # 2 lines per doc
  bulk_string = ''
  file        = options[:file].is_a?(String) ? File.open(options[:file]) : options[:file]
  path        = file.path
  if options[:verbose]
    line_count = 0
    file.lines { line_count += 1 }
    file.rewind
    Prompter.say_title "Loading: #{path}"
    pbar = ProgBar.new(line_count / 2, options[:batch_size])
  end
  file.lines do |line|
    bulk_string << (options[:index_map] ? map_index(line) : line)
    if (file.lineno % chunk_size) == 0
      result = Elastics.post_bulk_string :bulk_string => bulk_string
      bulk_string  = ''
      pbar.process_result(result, options[:batch_size]) if options[:verbose]
    end
  end
  # last chunk
  unless bulk_string == ''
    result = Elastics.post_bulk_string :bulk_string => bulk_string
    pbar.process_result(result, (file.lineno % chunk_size) / 2) if options[:verbose]
  end
  file.close
  pbar.finish if options[:verbose]
end