| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.dubbo.spring.boot.context.event; |
| |
| import org.apache.dubbo.common.Version; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent; |
| import org.springframework.context.ApplicationListener; |
| import org.springframework.core.Ordered; |
| import org.springframework.core.annotation.Order; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import static org.apache.dubbo.spring.boot.util.DubboUtils.DUBBO_GITHUB_URL; |
| import static org.apache.dubbo.spring.boot.util.DubboUtils.DUBBO_MAILING_LIST; |
| import static org.apache.dubbo.spring.boot.util.DubboUtils.DUBBO_SPRING_BOOT_GITHUB_URL; |
| import static org.apache.dubbo.spring.boot.util.DubboUtils.LINE_SEPARATOR; |
| |
| /** |
| * Dubbo Welcome Logo {@link ApplicationListener} |
| * |
| * @see ApplicationListener |
| * @since 2.7.0 |
| */ |
| @Order(Ordered.HIGHEST_PRECEDENCE + 20 + 1) // After LoggingApplicationListener#DEFAULT_ORDER |
| public class WelcomeLogoApplicationListener implements ApplicationListener<ApplicationEnvironmentPreparedEvent> { |
| |
| private static AtomicBoolean processed = new AtomicBoolean(false); |
| |
| @Override |
| public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) { |
| |
| // Skip if processed before, prevent duplicated execution in Hierarchical ApplicationContext |
| if (processed.get()) { |
| return; |
| } |
| |
| /** |
| * Gets Logger After LoggingSystem configuration ready |
| * @see LoggingApplicationListener |
| */ |
| final Logger logger = LoggerFactory.getLogger(getClass()); |
| |
| String bannerText = buildBannerText(); |
| |
| if (logger.isInfoEnabled()) { |
| logger.info(bannerText); |
| } else { |
| System.out.print(bannerText); |
| } |
| |
| // mark processed to be true |
| processed.compareAndSet(false, true); |
| } |
| |
| String buildBannerText() { |
| |
| StringBuilder bannerTextBuilder = new StringBuilder(); |
| |
| bannerTextBuilder |
| .append(LINE_SEPARATOR) |
| .append(LINE_SEPARATOR) |
| .append(" :: Dubbo Spring Boot (v").append(Version.getVersion(getClass(), "1.0.0")).append(") : ") |
| .append(DUBBO_SPRING_BOOT_GITHUB_URL) |
| .append(LINE_SEPARATOR) |
| .append(" :: Dubbo (v").append(Version.getVersion()).append(") : ") |
| .append(DUBBO_GITHUB_URL) |
| .append(LINE_SEPARATOR) |
| .append(" :: Discuss group : ") |
| .append(DUBBO_MAILING_LIST) |
| .append(LINE_SEPARATOR) |
| ; |
| |
| return bannerTextBuilder.toString(); |
| |
| } |
| |
| } |