1#!/usr/bin/env python
 2#
 3# Licensed to the Apache Software Foundation (ASF) under one
 4# or more contributor license agreements.  See the NOTICE file
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 6# regarding copyright ownership.  The ASF licenses this file
 7# to you under the Apache License, Version 2.0 (the
 8# "License"); you may not use this file except in compliance
 9# with the License.  You may obtain a copy of the License at
10#
11#   http://www.apache.org/licenses/LICENSE-2.0
12#
13# Unless required by applicable law or agreed to in writing,
14# software distributed under the License is distributed on an
15# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16# KIND, either express or implied.  See the License for the
17# specific language governing permissions and limitations
18# under the License.
19#
20
21# -*- encoding: utf-8 -*-
22
23# Licensed to the Apache Software Foundation (ASF) under one
24# or more contributor license agreements.  See the NOTICE file
25# distributed with this work for additional information
26# regarding copyright ownership.  The ASF licenses this file
27# to you under the Apache License, Version 2.0 (the
28# "License"); you may not use this file except in compliance
29# with the License.  You may obtain a copy of the License at
30#
31#   http://www.apache.org/licenses/LICENSE-2.0
32#
33# Unless required by applicable law or agreed to in writing,
34# software distributed under the License is distributed on an
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36# KIND, either express or implied.  See the License for the
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38# under the License.
39#
40"""function.py: This is the core interface of the function api.
41# The process method is called for every message of the input topic of the
42# function. The incoming input bytes are deserialized using the serde.
43# The process function can optionally emit an output
44"""
45from abc import abstractmethod
46
47class Function(object):
48  """Interface for Pulsar Function"""
49  @abstractmethod
50  def process(self, input, context):
51    """Process input message"""
52    pass