/** Encapsulate setContextClassLoader for contexts where the security manager is set. */
protected void setContextClassLoader(ClassLoader loader) {
Thread thread = Thread.currentThread();
ClassLoader currentLoader = thread.getContextClassLoader();
// to avoid security manager in GoogleAppEngine, skip the setting
// if the loader is the current loader
if (loader != currentLoader) {
thread.setContextClassLoader(loader);
}
}
/** Scans the classpath for META-INF/services/com.clevercloud.bianca.BiancaModule */
private void initStaticFunctions() {
Thread thread = Thread.currentThread();
ClassLoader oldLoader = thread.getContextClassLoader();
try {
setContextClassLoader(_loader);
String biancaModule = "META-INF/services/com.clevercloud.bianca.BiancaModule";
Enumeration<URL> urls = _loader.getResources(biancaModule);
HashSet<URL> urlSet = new HashSet<URL>();
// gets rid of duplicate entries found by different classloaders
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
if (!hasServiceModule(url)) {
addServiceModule(url);
urlSet.add(url);
}
}
for (URL url : urlSet) {
InputStream is = null;
ReadStream rs = null;
try {
is = url.openStream();
rs = new ReadStream(new VfsStream(is, null));
parseServicesModule(rs);
} catch (Throwable e) {
log.log(Level.FINE, e.toString(), e);
} finally {
if (rs != null) {
rs.close();
}
if (is != null) {
is.close();
}
}
}
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
} finally {
setContextClassLoader(oldLoader);
}
}
/** Parses the services file, looking for PHP services. */
private void parseServicesModule(ReadStream in)
throws IOException, ClassNotFoundException, IllegalAccessException, InstantiationException {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
String line;
while ((line = in.readLine()) != null) {
int p = line.indexOf('#');
if (p >= 0) {
line = line.substring(0, p);
}
line = line.trim();
if (line.length() > 0) {
String className = line;
try {
Class cl;
try {
cl = Class.forName(className, false, loader);
} catch (ClassNotFoundException e) {
throw new ClassNotFoundException(L.l("'{0}' not valid {1}", className, e.toString()));
}
introspectPhpModuleClass(cl);
} catch (Throwable e) {
log.log(Level.FINE, "Failed loading {0}\n{1}", new Object[] {className, e.toString()});
log.log(Level.FINE, e.toString(), e);
}
}
}
}
/** Parses the services file, looking for PHP services. */
private void parseClassServicesModule(ReadStream in)
throws IOException, ClassNotFoundException, IllegalAccessException, InstantiationException,
ConfigException, NoSuchMethodException, InvocationTargetException {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
String line;
while ((line = in.readLine()) != null) {
int p = line.indexOf('#');
if (p >= 0) {
line = line.substring(0, p);
}
line = line.trim();
if (line.length() == 0) {
continue;
}
String[] args = line.split(" ");
String className = args[0];
Class cl;
try {
cl = Class.forName(className, false, loader);
String phpClassName = null;
String extension = null;
String definedBy = null;
for (int i = 1; i < args.length; i++) {
if ("as".equals(args[i])) {
i++;
if (i >= args.length) {
throw new IOException(
L.l(
"expecting Bianca class name after '{0}' " + "in definition for class {1}",
"as", className));
}
phpClassName = args[i];
} else if ("provides".equals(args[i])) {
i++;
if (i >= args.length) {
throw new IOException(
L.l(
"expecting name of extension after '{0}' " + "in definition for class {1}",
"extension", className));
}
extension = args[i];
} else if ("definedBy".equals(args[i])) {
i++;
if (i >= args.length) {
throw new IOException(
L.l(
"expecting name of class implementing JavaClassDef after '{0}' "
+ "in definition for class {1}",
"definedBy", className));
}
definedBy = args[i];
} else {
throw new IOException(
L.l("unknown token '{0}' in definition for class {1} ", args[i], className));
}
}
if (phpClassName == null) {
phpClassName = className.substring(className.lastIndexOf('.') + 1);
}
Class javaClassDefClass;
if (definedBy != null) {
javaClassDefClass = Class.forName(definedBy, false, loader);
} else {
javaClassDefClass = null;
}
introspectJavaClass(phpClassName, cl, extension, javaClassDefClass);
} catch (Exception e) {
log.log(Level.FINE, "Failed loading {0}\n{1}", new Object[] {className, e.toString()});
log.log(Level.FINE, e.toString(), e);
}
}
}