#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one
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# 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
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from pulsar import Function

# Function that appends something to incoming input based on config supplied
class ConfigBasedAppendFunction(Function):
  def __init__(self):
    pass

  def process(self, input, context):
    key = "config-key"
    append_value = "!"
    if key in context.get_user_config_map():
      append_value = context.get_user_config_value(key)
    return input + str(append_value)