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Application.java
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Application.java
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/*
* Copyright (c) 2017, WSO2 Inc. (http://wso2.com) All Rights Reserved.
*
* 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.wso2.msf4j.ballerina;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.msf4j.MicroservicesRunner;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* Application entry point.
*
* @since 1.0.0
*/
public class Application {
private static Log log = LogFactory.getLog(Application.class);
static Path ballerinaPath;
static Path ballerinaTmp;
static Path psFinder = Paths.get("psfinder");
// Extract the Ballerina distribution and copy psfinder script.
static {
String DISTRIBUTION_ZIP = "ballerina-0.96.0.zip";
URL inputUrl = Application.class.getResource("/" + DISTRIBUTION_ZIP);
File ballerinaDist = new File(DISTRIBUTION_ZIP);
try {
FileUtils.copyURLToFile(Application.class.getResource("/psfinder"), psFinder.toFile());
FileUtils.copyURLToFile(inputUrl, ballerinaDist);
String tmp = System.getProperty("java.io.tmpdir");
String BALLERINA_TMP = "ballerinaTmp";
if (Paths.get(tmp, BALLERINA_TMP).toFile().exists()) {
ballerinaTmp = Paths.get(tmp, BALLERINA_TMP);
} else {
ballerinaTmp = Files.createDirectory(Paths.get(tmp, BALLERINA_TMP));
}
unzip(ballerinaDist.getPath(), tmp);
String DISTRIBUTION_NAME = "ballerina-0.96.0";
ballerinaPath = Paths.get(tmp, DISTRIBUTION_NAME, "bin", "ballerina");
ballerinaPath.toFile().setExecutable(true);
psFinder.toFile().setExecutable(true);
} catch (IOException e) {
String msg = "An error occur while extracting the Ballerina distribution. ";
log.error(msg + e.getMessage(), e);
// throw new RuntimeException(msg, e);
}
}
private static void unzip(String zipFilePath, String destDir) throws IOException {
BufferedInputStream bis = null;
FileOutputStream fileOutput = null;
try (ZipFile file = new ZipFile(zipFilePath)) {
FileSystem fileSystem = FileSystems.getDefault();
Enumeration<? extends ZipEntry> entries = file.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = entries.nextElement();
if (entry.isDirectory()) {
Files.createDirectories(fileSystem.getPath(destDir, entry.getName()));
} else {
InputStream is = file.getInputStream(entry);
bis = new BufferedInputStream(is);
Path uncompressedFilePath = fileSystem.getPath(destDir, entry.getName());
Files.createFile(uncompressedFilePath);
fileOutput = new FileOutputStream(uncompressedFilePath.toString());
while (bis.available() > 0) {
fileOutput.write(bis.read());
}
fileOutput.close();
}
}
} finally {
if (bis != null) {
IOUtils.closeQuietly(bis);
}
if(fileOutput != null) {
IOUtils.closeQuietly(fileOutput);
}
}
}
public static void main(String[] args) {
new MicroservicesRunner().deploy(new BallerinaService()).start();
}
}