storm-core/src/dev/resources/tester_bolt.rb

# -*- coding: utf-8 -*-

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
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require File.expand_path("storm", File.dirname(__FILE__))

class TesterBolt < Storm::Bolt
  def prepare(conf, context)
    emit ['bolt initializing']
  end

  def process(tuple)
    word = tuple.values[0]
    if (rand < 0.75)
      emit [word + "lalala"], :anchor => tuple
      ack tuple
    else
      log(word + ' randomly skipped!')
    end
  end
end

TesterBolt.new.run