001/*
002 * Copyright 2012-2015 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.autoconfigure.cloud;
018
019import org.springframework.boot.autoconfigure.AutoConfigureOrder;
020import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
021import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
022import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
023import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
024import org.springframework.cloud.Cloud;
025import org.springframework.cloud.app.ApplicationInstanceInfo;
026import org.springframework.cloud.config.java.CloudScan;
027import org.springframework.cloud.config.java.CloudScanConfiguration;
028import org.springframework.context.annotation.Configuration;
029import org.springframework.context.annotation.Import;
030import org.springframework.context.annotation.Profile;
031import org.springframework.core.Ordered;
032
033/**
034 * {@link EnableAutoConfiguration Auto-configuration} for Spring Cloud.
035 * <p>
036 * Activates when there is no bean of type {@link Cloud} is configured in the context, the
037 * {@link Cloud} type (this spring-cloud) is on the classpath, and the "cloud" profile is
038 * active.
039 * <p>
040 * Once in effect, the auto-configuration is the equivalent of adding the
041 * {@link CloudScan} annotation in one of the configuration file. Specifically, it adds a
042 * bean for each service bound to the application and one for
043 * {@link ApplicationInstanceInfo}
044 *
045 * @author Ramnivas Laddad
046 * @since 1.2.0
047 */
048@Configuration
049@Profile("cloud")
050@AutoConfigureOrder(CloudAutoConfiguration.ORDER)
051@ConditionalOnClass(CloudScanConfiguration.class)
052@ConditionalOnMissingBean(Cloud.class)
053@ConditionalOnProperty(prefix = "spring.cloud", name = "enabled", havingValue = "true", matchIfMissing = true)
054@Import(CloudScanConfiguration.class)
055public class CloudAutoConfiguration {
056
057        // Cloud configuration needs to happen early (before data, mongo etc.)
058        public static final int ORDER = Ordered.HIGHEST_PRECEDENCE + 20;
059
060}