org.teiid.spring.autoconfigure.NioZipFileSystem Maven / Gradle / Ivy
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* Copyright Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags and
* the COPYRIGHT.txt file distributed with this work.
*
* 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.teiid.spring.autoconfigure;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import org.teiid.common.buffer.AutoCleanupUtil;
import org.teiid.common.buffer.AutoCleanupUtil.Removable;
import org.teiid.core.util.ObjectConverterUtil;
import org.teiid.query.metadata.NioVirtualFile;
public class NioZipFileSystem {
/**
* Get the root {@link NioVirtualFile} for the given InputStream.
* Any previous filesystem for this InputStream will be closed.
* The returned file will be used to auto close the filesystem.
* It should be strongly held until the filesystem is no longer needed.
*
* @param is
* @return NioVirtualFile
* @throws IOException
* @throws URISyntaxException
*/
public static NioVirtualFile mount(InputStream is) throws IOException, URISyntaxException {
synchronized (NioZipFileSystem.class) {
File f = File.createTempFile("temp", null);
ObjectConverterUtil.write(is, f);
Map env = new HashMap<>();
env.put("create", "true"); //$NON-NLS-1$ //$NON-NLS-2$
FileSystem zipfs = FileSystems.newFileSystem(f.toPath(), NioVirtualFile.class.getClassLoader());
Path root = zipfs.getPath("/"); //$NON-NLS-1$
AutoCleanupUtil.setCleanupReference(root, new Removable() {
@Override
public void remove() {
try {
zipfs.close();
} catch (IOException e) {
}
}
});
return new NioVirtualFile(root);
}
}
}