/** @param className Interface or abstract class that class to load should extend or implement */
public Class<?> loadAndResolve(String className, byte[] byteCode)
throws IllegalArgumentException {
// First things first: just to be sure; maybe we have already loaded it?
Class<?> old = findLoadedClass(className);
if (old != null) {
return old;
}
Class<?> impl;
// First: let's try calling it directly on parent, to be able to access protected/package-access
// stuff:
if (_cfgUseParentLoader) {
try {
Method method =
ClassLoader.class.getDeclaredMethod(
"defineClass", new Class[] {String.class, byte[].class, int.class, int.class});
method.setAccessible(true);
return (Class<?>) method.invoke(getParent(), className, byteCode, 0, byteCode.length);
} catch (Exception e) {
}
}
// but if that doesn't fly, try to do it from our own class loader
try {
impl = defineClass(className, byteCode, 0, byteCode.length);
} catch (LinkageError e) {
throw new IllegalArgumentException(
"Failed to load class '" + className + "': " + e.getMessage(), e);
}
// important: must also resolve the class...
resolveClass(impl);
return impl;
}
private void buildIncrementally(
final IncrementalBuildResults results, final String... destinationPath) {
try {
final IncrementalResults incrementalResults =
((InternalKieBuilder) kieBuilder).createFileSet(destinationPath).build();
results.addAllAddedMessages(convertMessages(incrementalResults.getAddedMessages(), handles));
results.addAllRemovedMessages(
convertMessages(incrementalResults.getRemovedMessages(), handles));
// Tidy-up removed message handles
for (Message message : incrementalResults.getRemovedMessages()) {
handles.remove(Handles.RESOURCE_PATH + "/" + getBaseFileName(message.getPath()));
}
} catch (LinkageError e) {
final String msg = MessageFormat.format(ERROR_CLASS_NOT_FOUND, e.getLocalizedMessage());
logger.warn(msg);
results.addAddedMessage(makeWarningMessage(msg));
} catch (Throwable e) {
final String msg = e.getLocalizedMessage();
logger.error(msg, e);
results.addAddedMessage(makeErrorMessage(msg));
}
}
private SOAPVersion(
String httpBindingId,
String nsUri,
String contentType,
String implicitRole,
String roleAttributeName,
String saajFactoryString,
QName faultCodeMustUnderstand,
String faultCodeClientLocalName,
String faultCodeServerLocalName,
Set<String> requiredRoles) {
this.httpBindingId = httpBindingId;
this.nsUri = nsUri;
this.contentType = contentType;
this.implicitRole = implicitRole;
this.implicitRoleSet = Collections.singleton(implicitRole);
this.roleAttributeName = roleAttributeName;
try {
saajMessageFactory = MessageFactory.newInstance(saajFactoryString);
saajSoapFactory = SOAPFactory.newInstance(saajFactoryString);
} catch (SOAPException e) {
throw new Error(e);
} catch (NoSuchMethodError e) {
// SAAJ 1.3 is not in the classpath
LinkageError x =
new LinkageError("You are loading old SAAJ from " + Which.which(MessageFactory.class));
x.initCause(e);
throw x;
}
this.faultCodeMustUnderstand = faultCodeMustUnderstand;
this.requiredRoles = requiredRoles;
this.faultCodeClient = new QName(nsUri, faultCodeClientLocalName);
this.faultCodeServer = new QName(nsUri, faultCodeServerLocalName);
}
static {
try {
Class clazz = Class.forName("java.lang.UNIXProcess");
DESTROY_PROCESS = clazz.getDeclaredMethod("destroyProcess", new Class[] {int.class});
DESTROY_PROCESS.setAccessible(true);
} catch (Exception e) {
LinkageError x =
new LinkageError("Couldn't get method java.lang.UNIXProcess.destroyProcess(int)");
x.initCause(e);
}
}
private void diagnoseFailedLoad(Exception cause) {
Process proc = process.getProcess();
try {
int val = proc.exitValue();
new RuntimeException("Jenkins died loading. Exit code " + val, cause);
} catch (IllegalThreadStateException _) {
// Process alive
}
// Try to get stacktrace
Class<?> clazz;
Field pidField;
try {
clazz = Class.forName("java.lang.UNIXProcess");
pidField = clazz.getDeclaredField("pid");
pidField.setAccessible(true);
} catch (Exception e) {
LinkageError x = new LinkageError();
x.initCause(e);
throw x;
}
if (clazz.isAssignableFrom(proc.getClass())) {
int pid;
try {
pid = (int) pidField.get(proc);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new AssertionError(e);
}
try {
Process jstack = new ProcessBuilder("jstack", String.valueOf(pid)).start();
if (jstack.waitFor() == 0) {
StringWriter writer = new StringWriter();
IOUtils.copy(jstack.getInputStream(), writer);
RuntimeException ex = new RuntimeException(
cause.getMessage() + "\n\n" + writer.toString()
);
ex.setStackTrace(cause.getStackTrace());
throw ex;
}
} catch (IOException | InterruptedException e) {
throw new AssertionError(e);
}
}
throw new Error(cause);
}
public boolean browse(URL url) {
try {
return browseImpl(url);
} catch (DesktopException e) {
if (logger.isDebugEnabled()) {
logger.error("Backend error starting browser", e);
} else {
logger.error(e.getMessage());
}
return false;
} catch (LinkageError e) {
logger.error("Linkage error starting browser: " + e.getMessage());
return false;
}
}
private static boolean loadHdf5Lib() {
try {
Class.forName(H5_CLASS_NAME);
return true;
} catch (ClassNotFoundException ignored) {
// no logging here, H5 class may not be provided by intention
return false;
} catch (LinkageError e) {
// warning here, because H5 class exists, but native libs couldn't be loaded
SystemUtils.LOG.warning(
MessageFormat.format(
"{0}: HDF-5 library not available: {1}: {2}",
Hdf5ProductWriterPlugIn.class, e.getClass(), e.getMessage()));
return false;
}
}
/**
* Test a doubled class that extends the base class, but is okay since it doesn't override the
* base class method.
*/
static void testExtendOkay(ClassLoader loader) {
Class doubledExtendOkayClass;
Object obj;
/* get the "alternate" version of DoubledExtendOkay */
try {
doubledExtendOkayClass = loader.loadClass("DoubledExtendOkay");
} catch (ClassNotFoundException cnfe) {
System.err.println("loadClass failed: " + cnfe);
return;
}
/* instantiate */
try {
obj = doubledExtendOkayClass.newInstance();
} catch (InstantiationException ie) {
System.err.println("newInstance failed: " + ie);
return;
} catch (IllegalAccessException iae) {
System.err.println("newInstance failed: " + iae);
return;
} catch (LinkageError le) {
System.err.println("Got unexpected LinkageError on DEO");
le.printStackTrace();
return;
}
/* use the base class reference to get a CL-specific instance */
BaseOkay baseRef = (BaseOkay) obj;
DoubledExtendOkay de = baseRef.getExtended();
/* try to call through it */
try {
String result;
result = BaseOkay.doStuff(de);
System.out.println("Got DEO result " + result);
} catch (LinkageError le) {
System.err.println("Got unexpected LinkageError on DEO");
le.printStackTrace();
return;
}
}
public static IRScope loadScriptFromFile(
Ruby runtime,
InputStream inStream,
File resourcePath,
String resourceName,
boolean isAbsolute) {
String name = getFilenameFromPathAndName(resourcePath, resourceName, isAbsolute);
try {
Class clazz = loadCompiledScriptFromClass(runtime, inStream);
try {
Method method = clazz.getMethod("loadIR", Ruby.class, String.class);
return (IRScope) method.invoke(null, runtime, name);
} catch (Exception e) {
if (runtime.getDebug().isTrue()) {
e.printStackTrace();
}
throw runtime.newLoadError(
name + " is not compiled Ruby; use java_import to load normal classes");
}
} catch (IOException e) {
throw runtime.newIOErrorFromException(e);
} catch (LinkageError le) {
if (runtime.getDebug().isTrue()) {
le.printStackTrace();
}
throw runtime.newLoadError(
"Linkage error loading compiled script; you may need to recompile '" + name + "': " + le);
} finally {
try {
inStream.close();
} catch (IOException ioe) {
throw runtime.newIOErrorFromException(ioe);
}
}
}
PluginManager(Config serverConfig, Iterable<ServerPlugin> plugins, LogProvider logProvider) {
Map<String, Pair<ServerPlugin, ServerExtender>> extensions =
new HashMap<String, Pair<ServerPlugin, ServerExtender>>();
Log log = logProvider.getLog(getClass());
for (ServerPlugin plugin : plugins) {
PluginPointFactory factory = new PluginPointFactoryImpl();
final ServerExtender extender = new ServerExtender(factory);
try {
plugin.loadServerExtender(extender);
} catch (Exception ex) {
log.warn("Failed to load plugin [%s]: %s", plugin.toString(), ex.getMessage());
continue;
} catch (LinkageError err) {
log.warn("Failed to load plugin [%s]: %s", plugin.toString(), err.getMessage());
continue;
}
Pair<ServerPlugin, ServerExtender> old =
extensions.put(plugin.name, Pair.of(plugin, extender));
if (old != null) {
log.warn(
String.format(
"Extension naming conflict \"%s\" between \"%s\" and \"%s\"",
plugin.name, old.first().getClass(), plugin.getClass()));
}
}
for (Pair<ServerPlugin, ServerExtender> extension : extensions.values()) {
log.info(String.format("Loaded server plugin \"%s\"", extension.first().name));
for (PluginPoint point : extension.other().all()) {
log.info(
String.format(
" %s.%s: %s",
point.forType().getSimpleName(), point.name(), point.getDescription()));
}
this.extensions.put(extension.first().name, extension.other());
}
}
/** @tests java.lang.LinkageError#LinkageError(java.lang.String) */
public void test_ConstructorLjava_lang_String() {
LinkageError e = new LinkageError("fixture");
assertEquals("fixture", e.getMessage());
assertNull(e.getCause());
}
/** @tests java.lang.LinkageError#LinkageError() */
public void test_Constructor() {
LinkageError e = new LinkageError();
assertNull(e.getMessage());
assertNull(e.getLocalizedMessage());
assertNull(e.getCause());
}
@Override
protected synchronized Class<?> loadClass(String class_name, boolean resolve)
throws ClassNotFoundException {
// System.out.println(" load :"+class_name);
if (alreadyFailed.contains(class_name)) throw new ClassNotFoundException(class_name);
deferTo = getParent();
try {
ClassNotFoundException classNotFound = null;
loading.push(class_name);
try {
if (debug) {; // System.out.println(indentation
// + "? entered " +
// class_name + " " +
// resolve);
indentation += " ";
}
Class loaded = previous.get(class_name);
if (loaded == null)
if (!shouldLoadLocal(class_name)) {
try {
loaded = getParent().loadClass(class_name);
} catch (ClassNotFoundException ex) {
classNotFound = ex;
if (debug) ; // System.out.println(ANSIColorUtils.red("-- class not found <"
// +
// class_name
// +
// ">"));
}
}
if (loaded == null) {
loaded = checkHasBeenLoaded(class_name);
}
if (classNotFound == null)
if (loaded == null) {
deferTo = getParent();
byte[] bytes = instrumentClass(this, class_name);
if (bytes != null) {
if (class_name.lastIndexOf(".") != -1) {
String packageName = class_name.substring(0, class_name.lastIndexOf("."));
if (!knownPackages.contains(packageName)) {
try {
definePackage(packageName, null, null, null, null, null, null, null);
} catch (IllegalArgumentException e) {
// e.printStackTrace();
}
knownPackages.add(packageName);
}
}
loaded = reloadingSupport.delegate(class_name, bytes);
if (loaded == null) {
try {
loaded = defineClass(class_name, bytes, 0, bytes.length);
} catch (LinkageError le) {
le.printStackTrace();
return null;
}
// ;//System.out.println("
// >>
// about
// to
// resolve
// <"+class_name+">
// <"+resolve+">");
if (resolve) resolveClass(loaded);
previous.put(class_name, loaded);
} else {; // System.out.println(" loaded <"
// +
// class_name
// +
// "> in RS classloader");
}
}
// ;//System.out.println("
// >>
// loaded
// <"+class_name+">");
}
if (classNotFound == null)
if (loaded == null) {
try {
loaded = Class.forName(class_name);
// recent change
previous.put(class_name, loaded);
} catch (ClassNotFoundException ex) {
classNotFound = ex;
if (debug) {; // System.out.println(ANSIColorUtils.red("-- class not found <"
// +
// class_name
// +
// ">"));
ex.printStackTrace();
}
}
}
if (debug) {
indentation = indentation.substring(1);
; // System.out.println(indentation
// + "?" + class_name +
// " complete");
// assert
// popped.equals(class_name);
}
if (classNotFound != null) {
if (debug) {
System.err.println(
"exception ("
+ classNotFound.getClass()
+ "): while trying to load <"
+ class_name
+ " / <"
+ loading
+ ">");
new Exception().printStackTrace();
}
alreadyFailed.add(class_name);
throw classNotFound;
}
already.put(class_name, loaded);
if (loaded.isAnnotationPresent(
Notable
.class)) {; // System.out.println(" CLASS IS NOTABLE :"+loaded+" "+notifications);
for (ClassLoadedNotification n : notifications) {
n.notify(loaded);
}
}
return loaded;
} finally {
String popped = loading.pop();
}
} catch (ClassNotFoundException e) {
throw e;
} catch (Throwable t) {
t.printStackTrace();
; // System.out.println(" unexpected trouble loading <"
// + loading + ">");
return null;
}
}
public BuildResults build() {
synchronized (kieFileSystem) {
// KieBuilder is not re-usable for successive "full" builds
kieBuilder = createKieBuilder(kieFileSystem);
// Record RTEs from KieBuilder - that can fail if a rule uses an inaccessible class
final BuildResults results = new BuildResults(projectGAV);
try {
final Results kieResults = kieBuilder.buildAll().getResults();
results.addAllBuildMessages(convertMessages(kieResults.getMessages(), handles));
} catch (LinkageError e) {
final String msg = MessageFormat.format(ERROR_CLASS_NOT_FOUND, e.getLocalizedMessage());
logger.warn(msg);
results.addBuildMessage(makeWarningMessage(msg));
} catch (Throwable e) {
final String msg = e.getLocalizedMessage();
logger.error(msg, e);
results.addBuildMessage(makeErrorMessage(msg));
} finally {
pomModelCache.setEntry(project, ((KieBuilderImpl) kieBuilder).getPomModel());
}
// Add validate messages from external helpers
for (Map.Entry<Path, BuildValidationHelper> e : nonKieResourceValidationHelpers.entrySet()) {
final org.uberfire.backend.vfs.Path vfsPath = Paths.convert(e.getKey());
final List<ValidationMessage> validationMessages = e.getValue().validate(vfsPath);
nonKieResourceValidationHelperMessages.put(e.getKey(), validationMessages);
results.addAllBuildMessages(convertValidationMessages(validationMessages));
}
// Check external imports are available. These are loaded when a DMO is requested, but it's
// better to report them early
final org.uberfire.java.nio.file.Path nioExternalImportsPath =
projectRoot.resolve("project.imports");
if (Files.exists(nioExternalImportsPath)) {
final org.uberfire.backend.vfs.Path externalImportsPath =
Paths.convert(nioExternalImportsPath);
final ProjectImports projectImports = importsService.load(externalImportsPath);
final Imports imports = projectImports.getImports();
for (final Import item : imports.getImports()) {
final String fullyQualifiedClassName = item.getType();
try {
Class clazz = this.getClass().getClassLoader().loadClass(item.getType());
} catch (ClassNotFoundException cnfe) {
logger.warn(cnfe.getMessage());
final String msg = MessageFormat.format(ERROR_CLASS_NOT_FOUND, fullyQualifiedClassName);
results.addBuildMessage(makeWarningMessage(msg));
}
}
}
// At the end we are interested to ensure that external .jar files referenced as dependencies
// don't have
// referential inconsistencies. We will at least provide a basic algorithm to ensure that if
// an external class
// X references another external class Y, Y is also accessible by the class loader.
final KieModuleMetaData kieModuleMetaData =
KieModuleMetaData.Factory.newKieModuleMetaData(
((InternalKieBuilder) kieBuilder).getKieModuleIgnoringErrors());
final Set<String> packageNamesWhiteList =
packageNameWhiteList.filterPackageNames(project, kieModuleMetaData.getPackages());
// store the project dependencies ClassLoader for optimization purposes.
updateDependenciesClassLoader(project, kieModuleMetaData);
for (final String packageName : kieModuleMetaData.getPackages()) {
if (packageNamesWhiteList.contains(packageName)) {
for (final String className : kieModuleMetaData.getClasses(packageName)) {
final String fullyQualifiedClassName = packageName + "." + className;
try {
final Class clazz = kieModuleMetaData.getClass(packageName, className);
if (clazz != null) {
final TypeSource typeSource = getClassSource(kieModuleMetaData, clazz);
if (TypeSource.JAVA_DEPENDENCY == typeSource) {
verifyExternalClass(clazz);
}
} else {
final String msg =
MessageFormat.format(ERROR_EXTERNAL_CLASS_VERIFICATON, fullyQualifiedClassName);
logger.warn(msg);
}
} catch (Throwable e) {
final String msg =
MessageFormat.format(ERROR_EXTERNAL_CLASS_VERIFICATON, fullyQualifiedClassName);
logger.warn(msg);
results.addBuildMessage(makeWarningMessage(msg));
}
}
}
}
return results;
}
}