com.aspectran.core.context.resource.LocalResourceManager Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2023 The Aspectran Project
*
* 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 com.aspectran.core.context.resource;
import com.aspectran.core.util.FileCopyUtils;
import com.aspectran.core.util.ResourceUtils;
import com.aspectran.core.util.SystemUtils;
import com.aspectran.core.util.ToStringBuilder;
import com.aspectran.core.util.logging.Logger;
import com.aspectran.core.util.logging.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileVisitOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import static com.aspectran.core.context.config.AspectranConfig.WORK_PATH_PROPERTY_NAME;
/**
* The Class LocalResourceManager.
*
* Created: 2014. 12. 18 PM 5:51:13
*/
public class LocalResourceManager extends ResourceManager {
private static final Logger logger = LoggerFactory.getLogger(LocalResourceManager.class);
private static final String WORK_RESOURCE_DIRNAME_PREFIX = "_resource_";
private final String resourceLocation;
private final int resourceNameStart;
private final SiblingsClassLoader owner;
public LocalResourceManager(SiblingsClassLoader owner) throws InvalidResourceException {
this(owner, null);
}
public LocalResourceManager(SiblingsClassLoader owner, String resourceLocation) throws InvalidResourceException {
super();
this.owner = owner;
if (resourceLocation != null && !resourceLocation.isEmpty()) {
File file = new File(resourceLocation);
if (!file.exists() || !file.canRead()) {
logger.warn("Non-existent or inaccessible resource location: " + resourceLocation);
this.resourceLocation = null;
this.resourceNameStart = 0;
return;
}
if (!file.isDirectory() && !resourceLocation.toLowerCase().endsWith(ResourceUtils.JAR_FILE_EXTENSION)) {
throw new InvalidResourceException("Invalid resource directory or jar file: " + file.getAbsolutePath());
}
this.resourceLocation = file.getAbsolutePath();
this.resourceNameStart = this.resourceLocation.length() + 1;
findResource(file);
} else {
this.resourceLocation = null;
this.resourceNameStart = 0;
}
if (owner.isRoot()) {
sweepWorkResourceFiles();
}
}
@Override
public void reset() throws InvalidResourceException {
super.reset();
if (resourceLocation != null) {
findResource(new File(resourceLocation));
}
}
private void findResource(File file) throws InvalidResourceException {
try {
if (file.isDirectory()) {
List jarFileList = new ArrayList<>();
findResourceInDir(file, jarFileList);
if (!jarFileList.isEmpty()) {
for (File jarFile : jarFileList) {
owner.joinSibling(jarFile.getAbsolutePath());
}
}
} else {
findResourceFromJAR(file);
}
} catch (Exception e) {
throw new InvalidResourceException("Failed to find resource from [" + resourceLocation + "]", e);
}
}
private void findResourceInDir(File dir, List jarFileList) {
dir.listFiles(file -> {
String filePath = file.getAbsolutePath();
String resourceName = filePath.substring(resourceNameStart);
try {
putResource(resourceName, file);
} catch (InvalidResourceException e) {
throw new RuntimeException(e);
}
if (file.isDirectory()) {
findResourceInDir(file, jarFileList);
} else if (file.isFile()) {
if (filePath.toLowerCase().endsWith(ResourceUtils.JAR_FILE_EXTENSION)) {
jarFileList.add(file);
}
}
return false;
});
}
private void findResourceFromJAR(File target) throws InvalidResourceException, IOException {
String workPath = SystemUtils.getProperty(WORK_PATH_PROPERTY_NAME);
File workResourceDir = null;
if (workPath != null) {
Path workDir = Path.of(workPath);
if (Files.isDirectory(workDir) && Files.isWritable(workDir)) {
workResourceDir = Files.createTempDirectory(workDir, WORK_RESOURCE_DIRNAME_PREFIX).toFile();
}
}
if (workResourceDir == null) {
workResourceDir = Files.createTempDirectory(WORK_RESOURCE_DIRNAME_PREFIX).toFile();
}
FileCopyUtils.copyFileToDirectory(target, workResourceDir);
File workResourceFile = new File(workResourceDir, target.getName());
try (JarFile jarFile = new JarFile(workResourceFile)) {
for (Enumeration entries = jarFile.entries(); entries.hasMoreElements(); ) {
JarEntry entry = entries.nextElement();
putResource(workResourceFile, entry);
}
}
workResourceDir.deleteOnExit();
workResourceFile.deleteOnExit();
}
@Override
public String toString() {
ToStringBuilder tsb = new ToStringBuilder();
tsb.appendForce("resourceLocation", resourceLocation);
tsb.append("numberOfResources", getNumberOfResources());
tsb.append("owner", owner);
return tsb.toString();
}
private void sweepWorkResourceFiles() {
String workPath = SystemUtils.getProperty(WORK_PATH_PROPERTY_NAME);
if (workPath != null) {
Path workDir = Path.of(workPath);
if (Files.isDirectory(workDir)) {
if (logger.isDebugEnabled()) {
logger.debug("Sweeping " + workDir.toAbsolutePath() + File.separatorChar +
WORK_RESOURCE_DIRNAME_PREFIX + "* for old resource files");
}
try {
Files.walk(workDir, 1, FileVisitOption.FOLLOW_LINKS)
.filter(Files::isDirectory)
.filter(p -> p.getFileName().toString().startsWith(WORK_RESOURCE_DIRNAME_PREFIX))
.forEach(p -> {
try {
Files.walk(p)
.sorted(Comparator.reverseOrder())
.map(Path::toFile)
.forEach(file -> {
if (logger.isTraceEnabled()) {
logger.trace("Delete temp resource: " + file);
}
file.delete();
});
} catch (IOException e) {
logger.warn("Failed to delete temp resource: " + e.getMessage());
}
});
} catch (IOException e) {
logger.warn("Inaccessible temp path: " + workPath, e);
}
}
}
}
}