/*
* Copyright 2012-2017 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
*
* 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.springframework.boot.context.embedded;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import org.springframework.util.FileSystemUtils;
import org.springframework.util.StreamUtils;
/**
* {@link AbstractApplicationLauncher} that launches a Spring Boot application using
* {@code JarLauncher} or {@code WarLauncher} and an exploded archive.
*
* @author Andy Wilkinson
*/
class ExplodedApplicationLauncher extends AbstractApplicationLauncher {
private final File exploded = new File("target/exploded");
ExplodedApplicationLauncher(ApplicationBuilder applicationBuilder) {
super(applicationBuilder);
}
@Override
protected File getWorkingDirectory() {
return this.exploded;
}
@Override
protected String getDescription(String packaging) {
return "exploded " + packaging;
}
@Override
protected List<String> getArguments(File archive) {
String mainClass = archive.getName().endsWith(".war")
? "org.springframework.boot.loader.WarLauncher"
: "org.springframework.boot.loader.JarLauncher";
try {
explodeArchive(archive);
return Arrays.asList("-cp", this.exploded.getAbsolutePath(), mainClass);
}
catch (IOException ex) {
throw new RuntimeException(ex);
}
}
private void explodeArchive(File archive) throws IOException {
FileSystemUtils.deleteRecursively(this.exploded);
JarFile jarFile = new JarFile(archive);
Enumeration<JarEntry> entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry jarEntry = entries.nextElement();
File extracted = new File(this.exploded, jarEntry.getName());
if (jarEntry.isDirectory()) {
extracted.mkdirs();
}
else {
FileOutputStream extractedOutputStream = new FileOutputStream(extracted);
StreamUtils.copy(jarFile.getInputStream(jarEntry), extractedOutputStream);
extractedOutputStream.close();
}
}
jarFile.close();
}
}