| # Copyright 2017-present Open Networking Foundation |
| # |
| # Licensed 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. |
| |
| class EventStep(object): |
| """ |
| All the event steps defined in each synchronizer needs to inherit from this class in order to be loaded |
| |
| Each step should define a technology, and either a `topics` or a `pattern`. The meaning of `topics` and `pattern` |
| depend on the technology that is chosen. |
| """ |
| |
| technology = "kafka" |
| topics = [] |
| pattern = None |
| |
| def __init__(self, log, **kwargs): |
| """ |
| Initialize a pull step. Override this function to include any initialization. Make sure to call the original |
| __init__() from your method. |
| """ |
| |
| # self.log can be used to emit logging messages. |
| self.log = log |
| |
| def process_event(self, event): |
| # This method must be overridden in your class. Do not call the original method. |
| |
| self.log.warning("There is no default process_event, please provide a process_event method", msg=event) |