examples/src/python/bolt/half_ack_bolt.py

#!/usr/bin/env python
# -*- encoding: utf-8 -*-

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'''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("Total received: %d" % self.total)