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/*
 * Copyright 2012-2020 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
 *
 *      https://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 org.springframework.cloud.env;

import java.util.Collections;
import java.util.Map;

import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.bind.Binder;
import org.springframework.core.env.Environment;

/**
 * @author Spencer Gibb
 */
public final class EnvironmentUtils {

	private EnvironmentUtils() {
		throw new IllegalStateException("Can't instantiate a utility class");
	}

	public static Map getSubProperties(Environment environment, String keyPrefix) {
		return Binder.get(environment).bind(keyPrefix, Bindable.mapOf(String.class, String.class))
				.orElseGet(Collections::emptyMap);
	}

}