text: #!/usr/bin/env python3
  # -*- encoding: 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 distributed under the License is distributed on an
  #  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  #  KIND, either express or implied.  See the License for the
  #  specific language governing permissions and limitations
  #  under the License.
  
  '''half ack bolt'''
  from heronpy.api.bolt.bolt import Bolt
  
  class HalfAckBolt(Bolt):
    """Half of data tuples will be acked and the other half will be failed"""
    # pylint: disable=unused-argument
    def initialize(self, config, context):
      self.total = 0
  
    def process(self, tup):
      self.total += 1
      if self.total % 2 == 0:
        self.logger.debug("Failing a tuple: %s", str(tup))
        self.fail(tup)
      else:
        self.logger.debug("Acking a tuple: %s", str(tup))
        self.ack(tup)
  
    def process_tick(self, tup):
      self.log("Got tick tuple!")
      self.log(f"Total received: {self.total}")
  