001/* 002 * Copyright 2002-2020 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 * https://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.test.context; 018 019import java.util.function.Supplier; 020 021/** 022 * Registry used with {@link DynamicPropertySource @DynamicPropertySource} 023 * methods so that they can add properties to the {@code Environment} that have 024 * dynamically resolved values. 025 * 026 * @author Phillip Webb 027 * @author Sam Brannen 028 * @since 5.2.5 029 * @see DynamicPropertySource 030 */ 031public interface DynamicPropertyRegistry { 032 033 /** 034 * Add a {@link Supplier} for the given property name to this registry. 035 * @param name the name of the property for which the supplier should be added 036 * @param valueSupplier a supplier that will provide the property value on demand 037 */ 038 void add(String name, Supplier<Object> valueSupplier); 039 040}