com.visionarts.powerjambda.LambdaAction Maven / Gradle / Ivy
/*
* Copyright 2017 the original author or authors.
*
* 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.
*/
package com.visionarts.powerjambda;
import com.amazonaws.services.lambda.runtime.Context;
/**
* The Lambda action implements AWS Lambda Function application logic using plain old java objects(POJOs)
* as input and output.
*
* @param The type of the request to the action
* @param The type of the result from the action
*/
public interface LambdaAction {
/**
* Handles the action request.
*
* @param request The action request
* @param context The Lambda execution environment context object
* @return The action result as the Lambda Function response
* @throws Exception Thrown if an error in processing
*/
ResultT handle(RequestT request, Context context) throws Exception;
/**
* Here you do the job before action if any.
*
* Note that the action handler will skip if any exceptions occurs during this method.
*
*
This method should be overridden by subclasses.
*
* @param request The action request
* @param context The Lambda context passed by the AWS Lambda environment
* @throws Exception Thrown if an error in processing
*/
default void beforeAction(RequestT request, Context context) throws Exception {
// do something as you like
}
/**
* Here you do the job after action if any.
*
*
This method should be overridden by subclasses.
*
* @param request The action request
* @param context The Lambda context passed by the AWS Lambda environment
*/
default void afterAction(RequestT request, Context context) {
// do something as you like
}
}