| // Licensed to 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. Apache Software Foundation (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. |
| // |
| |
| package trigger |
| |
| type Action interface { |
| // Do performs the trigger action according to the settings, |
| // and returns an error channel, the controller waits for the |
| // error and if it's nil, the controller considers the action |
| // is successfully scheduled, otherwise the controller considers |
| // this is a failure and aborts the process. |
| // |
| // It's guaranteed that the error channel will receive the first |
| // error, and receive at most 1 error, all following errors will |
| // not be returned. |
| // |
| // This returning style can be used to wait for the http action |
| // being normal, and then schedule it, otherwise we can interrupt |
| // according to the first error. |
| Do() chan error |
| |
| // Stop stops the scheduled actions. |
| Stop() |
| } |
