org.springframework.boot.devtools.RemoteUrlPropertyExtractor Maven / Gradle / Ivy
/*
* 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.boot.devtools;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collections;
import java.util.Map;
import org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.core.Ordered;
import org.springframework.core.env.CommandLinePropertySource;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.MapPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* {@link ApplicationListener} to extract the remote URL for the
* {@link RemoteSpringApplication} to use.
*
* @author Phillip Webb
* @author Andy Wilkinson
*/
class RemoteUrlPropertyExtractor implements ApplicationListener, Ordered {
private static final String NON_OPTION_ARGS = CommandLinePropertySource.DEFAULT_NON_OPTION_ARGS_PROPERTY_NAME;
@Override
public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) {
ConfigurableEnvironment environment = event.getEnvironment();
String url = cleanRemoteUrl(environment.getProperty(NON_OPTION_ARGS));
Assert.state(StringUtils.hasLength(url), "No remote URL specified");
Assert.state(url.indexOf(',') == -1, "Multiple URLs specified");
try {
new URI(url);
}
catch (URISyntaxException ex) {
throw new IllegalStateException("Malformed URL '" + url + "'");
}
Map source = Collections.singletonMap("remoteUrl", url);
PropertySource propertySource = new MapPropertySource("remoteUrl", source);
environment.getPropertySources().addLast(propertySource);
}
private String cleanRemoteUrl(String url) {
if (StringUtils.hasText(url) && url.endsWith("/")) {
return url.substring(0, url.length() - 1);
}
return url;
}
@Override
public int getOrder() {
return Ordered.HIGHEST_PRECEDENCE;
}
}