Module: Priam::Command::Get

Defined in:
lib/priam/command/get.rb

Class Method Summary collapse

Class Method Details

.run(argv, input_stream = $stdin, output_stream = $stdout) ⇒ Object



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# File 'lib/priam/command/get.rb', line 3

def self.run(argv, input_stream=$stdin, output_stream=$stdout)
  params = Priam::Core::Common.parse_opts(argv)
  host = params[:host]
  port = params[:port]
  keyspace = params[:keyspace]
  column_family = params[:column_family]
  super_column = params[:super_column]
  name = params[:value_column]
  with_key_flag = params[:with_key_flag]

  client = Cassandra.new(keyspace, "#{host}:#{port}")
  
  Priam.logger.debug "Cluster Name: #{client.cluster_name}"
  Priam.logger.debug "Key Space   : #{keyspace}"
  
  key_list = []
  count = 0
  
  while line = input_stream.gets do
    key = line.chomp
    key_list.push key
    if key.nil? || key == '' then
      output_stream.puts
      next
    end
  
    record = Priam.get_column(client, column_family, super_column, key, params)    

    if with_key_flag
      output_stream.print "#{key}\t"
    end

    if name then
      output_stream.puts "#{record[name]}"
    else
      output_stream.puts record.to_json
    end
    count += 1
    if count % 10 == 0 then
      Priam.logger.info " GET [#{key_list.join(',')}]"
      key_list.clear
    end
  end
  
  if key_list != [] then
    Priam.logger.info " GET [#{key_list.join(',')}]"
  end

  uri = "cassandra://#{host}:#{port}/#{keyspace}/#{column_family}"
  uri += "/#{super_column}" if super_column
  Priam.logger.info " got #{count} columns from #{uri}"
end