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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.plugin.bundle;
import com.yahoo.container.plugin.osgi.ExportPackageParser;
import com.yahoo.container.plugin.osgi.ExportPackages.Export;
import com.yahoo.container.plugin.util.JarFiles;
import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.jar.Manifest;
import java.util.stream.Collectors;
/**
* Static utilities for analyzing jar files.
*
* @author Tony Vaagenes
* @author ollivir
* @author gjoranv
*/
public class AnalyzeBundle {
public static List<Export> exportedPackagesAggregated(Collection<File> jarFiles) {
List<Export> exports = new ArrayList<>();
for (File jarFile : jarFiles) {
var exported = exportedPackages(jarFile);
exports.addAll(exported);
}
return exports;
}
static List<Export> exportedPackages(File jarFile) {
try {
Optional<Manifest> jarManifest = JarFiles.getManifest(jarFile);
if (jarManifest.isPresent()) {
Manifest manifest = jarManifest.get();
if (isOsgiManifest(manifest)) {
return parseExports(manifest);
}
}
return Collections.emptyList();
} catch (Exception e) {
throw new RuntimeException(String.format("Invalid manifest in bundle '%s'", jarFile.getPath()), e);
}
}
public static Optional<String> bundleSymbolicName(File jarFile) {
return JarFiles.getManifest(jarFile).flatMap(AnalyzeBundle::getBundleSymbolicName);
}
private static List<Export> parseExports(Manifest jarManifest) {
return getMainAttributeValue(jarManifest, "Export-Package")
.map(ExportPackageParser::parseExports)
.orElseGet(ArrayList::new);
}
private static Optional<String> getMainAttributeValue(Manifest manifest, String attributeName) {
return Optional.ofNullable(manifest.getMainAttributes().getValue(attributeName));
}
private static boolean isOsgiManifest(Manifest mf) {
return getBundleSymbolicName(mf).isPresent();
}
private static Optional<String> getBundleSymbolicName(Manifest mf) {
return getMainAttributeValue(mf, "Bundle-SymbolicName");
}
}
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