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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.core;
import com.yahoo.io.IOUtils;
import com.yahoo.yolean.Exceptions;
import org.apache.felix.framework.Felix;
import org.osgi.framework.BundleException;
import org.osgi.framework.Constants;
import org.osgi.framework.launch.Framework;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.jar.JarInputStream;
import java.util.logging.Logger;
/**
* @author Simon Thoresen Hult
* @author gjoranv
*/
public class ExportPackages {
private static final Logger log = Logger.getLogger(ExportPackages.class.getName());
public static final String PROPERTIES_FILE = "/exportPackages.properties";
public static final String EXPORT_PACKAGES = "exportPackages";
private static final String REPLACE_VERSION_PREFIX = "__REPLACE_VERSION__";
public static void main(String[] args) throws IOException {
String fileName = args[0];
if (!fileName.endsWith(PROPERTIES_FILE)) {
throw new IllegalArgumentException("Expected '" + PROPERTIES_FILE + "', got '" + fileName + "'.");
}
String exportPackages = getExportPackages(args);
Properties props = new Properties();
props.setProperty(EXPORT_PACKAGES, exportPackages);
try (FileWriter writer = new FileWriter(new File(fileName))) {
props.store(writer, "generated by " + ExportPackages.class.getName());
}
}
private static String getExportPackages(String[] jars) throws IOException {
StringBuilder out = new StringBuilder();
out.append(getSystemPackages()).append(", ")
.append("com.yahoo.jdisc, ")
.append("com.yahoo.jdisc.application, ")
.append("com.yahoo.jdisc.handler, ")
.append("com.yahoo.jdisc.service, ")
.append("com.yahoo.jdisc.statistics, ")
.append("javax.inject;version=1.0.0, ") // Included in guice, but not exported. Needed by container-jersey.
.append("org.aopalliance.intercept, ")
.append("org.aopalliance.aop");
for (int i = 1; i < jars.length; ++i) {
out.append(", ").append(getExportedPackages(jars[i]));
}
return out.toString();
}
public static String readExportProperty() {
Properties props = new Properties();
try {
props.load(ExportPackages.class.getResourceAsStream(PROPERTIES_FILE));
} catch (IOException e) {
throw new IllegalStateException("Failed to read resource '" + PROPERTIES_FILE + "'.");
}
return props.getProperty(EXPORT_PACKAGES);
}
public static String getSystemPackages() {
File cache;
try {
cache = Files.createTempDirectory("felix-cache").toAbsolutePath().toFile();
} catch (IOException e) {
throw new RuntimeException("Could not create temp bundle-cache.", e);
}
Framework framework = new Felix(felixCacheParams(cache.getAbsolutePath()));
try {
framework.init();
framework.start();
return framework.getHeaders().get(Constants.EXPORT_PACKAGE);
} catch (BundleException e) {
throw new RuntimeException("Failed retrieving exported system packages. ", e);
} finally {
try {
framework.stop();
framework.waitForStop(10000);
} catch (BundleException | InterruptedException e) {
log.warning("Failed to stop Felix framework:\n" + Exceptions.toMessageString(e));
}
if (! IOUtils.recursiveDeleteDir(cache)) {
log.warning("Failed to delete temp dir, must be deleted manually: " + cache.getAbsolutePath());
}
}
}
private static Map<String, Object> felixCacheParams(String cache) {
Map<String, Object> params = new HashMap<>();
params.put("felix.cache.profiledir", cache);
params.put("felix.cache.dir", cache);
params.put(Constants.FRAMEWORK_STORAGE, cache);
return params;
}
private static String getExportedPackages(String argument) throws IOException {
if (argument.startsWith(REPLACE_VERSION_PREFIX)) {
String jarFile = argument.substring(REPLACE_VERSION_PREFIX.length());
return readExportHeader(jarFile);
} else {
return readExportHeader(argument);
}
}
private static String readExportHeader(String jarFile) throws IOException {
try (JarInputStream jar = new JarInputStream(new FileInputStream(jarFile))) {
return jar.getManifest().getMainAttributes().getValue(Constants.EXPORT_PACKAGE);
}
}
}
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