001/* 002 * Copyright 2012-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.env; 018 019import org.springframework.boot.SpringApplication; 020import org.springframework.core.env.ConfigurableEnvironment; 021import org.springframework.core.env.Environment; 022 023/** 024 * Allows for customization of the application's {@link Environment} prior to the 025 * application context being refreshed. 026 * <p> 027 * EnvironmentPostProcessor implementations have to be registered in 028 * {@code META-INF/spring.factories}, using the fully qualified name of this class as the 029 * key. 030 * <p> 031 * {@code EnvironmentPostProcessor} processors are encouraged to detect whether Spring's 032 * {@link org.springframework.core.Ordered Ordered} interface has been implemented or if 033 * the {@link org.springframework.core.annotation.Order @Order} annotation is present and 034 * to sort instances accordingly if so prior to invocation. 035 * 036 * @author Andy Wilkinson 037 * @author Stephane Nicoll 038 * @since 1.3.0 039 */ 040@FunctionalInterface 041public interface EnvironmentPostProcessor { 042 043 /** 044 * Post-process the given {@code environment}. 045 * @param environment the environment to post-process 046 * @param application the application to which the environment belongs 047 */ 048 void postProcessEnvironment(ConfigurableEnvironment environment, 049 SpringApplication application); 050 051}