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/**
* Copyright 2017 Huawei Technologies Co., Ltd.
*
* 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.onap.validation.csar;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.Map;
public final class CsarUtil {
private static final Logger logger = LoggerFactory.getLogger(CsarUtil.class);
private CsarUtil(){
//It is made private in order to resolve: Utility classes should not have public constructors
}
public static String getUnzipDir(String dirName) {
File tmpDir = new File(File.separator + dirName);
return tmpDir.getAbsolutePath().replace(".csar", "");
}
/**
* unzip zip file.
*
* @param zipFileName
* file name to zip
* @param extPlace
* extPlace
* @return unzip file names in zip
* @throws IOException
* e1
* @throws ValidationException
*/
public static Map<String, String> unzip(String zipFileName, String extPlace) throws IOException {
HashMap<String, String> unzipFileNames = new HashMap<>();
InputStream input = null;
try(ZipFile zipFile = new ZipFile(zipFileName)) {
Enumeration<?> fileEn = zipFile.entries();
byte[] buffer = new byte[CommonConstants.BUFFER_SIZE];
while (fileEn.hasMoreElements()) {
ZipEntry entry = (ZipEntry) fileEn.nextElement();
if (entry.isDirectory()) {
continue;
}
input = zipFile.getInputStream(entry);
File file = new File(extPlace, entry.getName());
//Currently it does not support xml based VNF descriptors.
//So skip and proceed to YAML defined files validation only.
if (file.getAbsolutePath().contains("xml"+System.getProperty("file.separator"))) {
continue;
}
updateUnzipFileNames(input, buffer, unzipFileNames, file);
}
} finally {
closeInputStream(input);
}
return unzipFileNames;
}
private static void updateUnzipFileNames(InputStream input, byte[] buffer, HashMap<String, String> unzipFileNames, File file) throws IOException {
if (!file.getParentFile().exists()) {
FileUtil.createDirectory(file.getParentFile().getAbsolutePath());
}
try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file))){
while (true) {
int length = input.read(buffer);
if (length == -1) {
break;
}
bos.write(buffer, 0, length);
}
unzipFileNames.put(file.getName(), file.getAbsolutePath());
}
}
/**
* close InputStream.
*
* @param inputStream
* the inputstream to close
* @throws ValidationException
*/
public static void closeInputStream(InputStream inputStream) {
try {
if (inputStream != null) {
inputStream.close();
}
} catch (Exception e1) {
String errCodeMessage = ErrorCodes.FILE_IO+" "+ e1.getMessage();
logger.error("FILE_IO:close InputStream error! {} {}", errCodeMessage, e1);
throw new ValidationException(ErrorCodes.FILE_IO);
}
}
/**
* close OutputStream.
*
* @param outputStream
* the output stream to close
* @throws ValidationException
*/
public static void closeOutputStream(OutputStream outputStream) {
try {
if (outputStream != null) {
outputStream.close();
}
} catch (Exception e1) {
logger.error("FILE_IO:close OutputStream error! {} {}", ErrorCodes.FILE_IO, e1);
throw new ValidationException(ErrorCodes.FILE_IO);
}
}
/**
*
* @param filePath
* @return HashMap<String, String>
*/
public static Map<String, String> csarExtract(String filePath) {
try {
String tempfolder = CsarUtil.getUnzipDir(filePath);
return CsarUtil.unzip(filePath, tempfolder);
} catch (IOException e1) {
String errCodeMessage = ErrorCodes.FILE_IO+" "+ e1.getMessage();
logger.error("CSAR_EXTRACTION:CSAR extraction error ! {} {}", errCodeMessage, e1);
throw new ValidationException(ErrorCodes.FILE_IO);
}
}
}
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