org.springframework.boot.autoconfigure.h2.H2ConsoleAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2022 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.boot.autoconfigure.h2;
import java.sql.Connection;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.h2.server.web.WebServlet;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
import org.springframework.boot.autoconfigure.h2.H2ConsoleProperties.Settings;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
/**
* {@link EnableAutoConfiguration Auto-configuration} for H2's web console.
*
* @author Andy Wilkinson
* @author Marten Deinum
* @author Stephane Nicoll
* @since 1.3.0
*/
@AutoConfiguration(after = DataSourceAutoConfiguration.class)
@ConditionalOnWebApplication(type = Type.SERVLET)
@ConditionalOnClass(WebServlet.class)
@ConditionalOnProperty(prefix = "spring.h2.console", name = "enabled", havingValue = "true")
@EnableConfigurationProperties(H2ConsoleProperties.class)
public class H2ConsoleAutoConfiguration {
private static final Log logger = LogFactory.getLog(H2ConsoleAutoConfiguration.class);
@Bean
public ServletRegistrationBean h2Console(H2ConsoleProperties properties,
ObjectProvider dataSource) {
String path = properties.getPath();
String urlMapping = path + (path.endsWith("/") ? "*" : "/*");
ServletRegistrationBean registration = new ServletRegistrationBean<>(new WebServlet(), urlMapping);
configureH2ConsoleSettings(registration, properties.getSettings());
if (logger.isInfoEnabled()) {
withThreadContextClassLoader(getClass().getClassLoader(), () -> logDataSources(dataSource, path));
}
return registration;
}
private void withThreadContextClassLoader(ClassLoader classLoader, Runnable action) {
ClassLoader previous = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(classLoader);
action.run();
}
finally {
Thread.currentThread().setContextClassLoader(previous);
}
}
private void logDataSources(ObjectProvider dataSource, String path) {
List urls = dataSource.orderedStream().map((available) -> {
try (Connection connection = available.getConnection()) {
return "'" + connection.getMetaData().getURL() + "'";
}
catch (Exception ex) {
return null;
}
}).filter(Objects::nonNull).collect(Collectors.toList());
if (!urls.isEmpty()) {
StringBuilder sb = new StringBuilder("H2 console available at '").append(path).append("'. ");
String tmp = (urls.size() > 1) ? "Databases" : "Database";
sb.append(tmp).append(" available at ");
sb.append(String.join(", ", urls));
logger.info(sb.toString());
}
}
private void configureH2ConsoleSettings(ServletRegistrationBean registration, Settings settings) {
if (settings.isTrace()) {
registration.addInitParameter("trace", "");
}
if (settings.isWebAllowOthers()) {
registration.addInitParameter("webAllowOthers", "");
}
if (settings.getWebAdminPassword() != null) {
registration.addInitParameter("webAdminPassword", settings.getWebAdminPassword());
}
}
}