private boolean invokeMethod(String line, PrintWriter out, Method method, String[] fields)
throws IllegalAccessException, InvocationTargetException {
ArrayList<Object> methodArguments = new ArrayList<Object>();
Class<?>[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 2
&& parameterTypes[0] == PrintWriter.class
&& parameterTypes[1] == String.class) {
// FIXME: there must be a better way to say "I want to parse the line myself."
methodArguments.add(out);
methodArguments.add(line);
} else {
int nextField = 1;
for (Class<?> parameterType : parameterTypes) {
if (parameterType == PrintWriter.class) {
methodArguments.add(out);
} else if (parameterType == String.class) {
methodArguments.add(fields[nextField++]);
}
// FIXME: support other common types. "int" seems a likely first candidate.
}
}
method.invoke(handler, methodArguments.toArray());
return true;
}
private String doCommand(Object target, String method, String[] args) {
if (target == null) ; // System.err.println("Huh? Target should never be null " +
// domain);
else {
String cname = "_" + method.replaceAll("-", "_");
try {
Method m = target.getClass().getMethod(cname, new Class[] {String[].class});
return (String) m.invoke(target, new Object[] {args});
} catch (NoSuchMethodException e) {
// Ignore
} catch (InvocationTargetException e) {
if (e.getCause() instanceof IllegalArgumentException) {
domain.error(
"%s, for cmd: %s, arguments; %s",
e.getCause().getMessage(), method, Arrays.toString(args));
} else {
domain.warning("Exception in replace: %s", e.getCause());
e.getCause().printStackTrace();
}
} catch (Exception e) {
domain.warning("Exception in replace: " + e + " method=" + method);
e.printStackTrace();
}
}
return null;
}
static <T> T set(Class<T> interf, Object value) {
Properties p = new Properties();
Method ms[] = interf.getMethods();
for (Method m : ms) {
p.put(m.getName(), value);
}
return Configurable.createConfigurable(interf, (Map<Object, Object>) p);
}
/**
* Try to execute given method on given object. Handles invocation target exceptions. XXX nearly
* duplicates tryMethod in JGEngine.
*
* @return null means method does not exist or returned null/void
*/
static Object tryMethod(Object o, String name, Object[] args) {
try {
Method met = JREEngine.getMethod(o.getClass(), name, args);
if (met == null) return null;
return met.invoke(o, args);
} catch (InvocationTargetException ex) {
Throwable ex_t = ex.getTargetException();
ex_t.printStackTrace();
return null;
} catch (IllegalAccessException ex) {
System.err.println("Unexpected exception:");
ex.printStackTrace();
return null;
}
}
public void loadAndRun(String className) throws Throwable {
// System.out.println("Loading " + className + "...");
Class testClass = new VerifyClassLoader().loadClass(className);
// System.out.println("Loaded " + className);
try {
Method main = testClass.getMethod("main", new Class[] {String[].class});
// System.out.println("Running " + className);
main.invoke(null, new Object[] {new String[] {}});
// System.out.println("Finished running " + className);
} catch (NoSuchMethodException e) {
return;
} catch (InvocationTargetException e) {
throw e.getTargetException();
}
}
public static void invokeSetMethodCaseInsensitive(Object obj, String prop, String value)
throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
String alternateMethodName = null;
Class cl = obj.getClass();
String setMeth = "set" + prop;
Method[] methodsList = cl.getMethods();
boolean methodFound = false;
int i = 0;
for (i = 0; i < methodsList.length; ++i) {
if (methodsList[i].getName().equalsIgnoreCase(setMeth) == true) {
Class[] parameterTypes = methodsList[i].getParameterTypes();
if (parameterTypes.length == 1) {
if (parameterTypes[0].getName().equals("java.lang.String")) {
methodFound = true;
break;
} else alternateMethodName = methodsList[i].getName();
}
}
}
if (methodFound == true) {
Object[] params = {value};
methodsList[i].invoke(obj, params);
return;
}
if (alternateMethodName != null) {
try {
// try int method
Class[] cldef = {Integer.TYPE};
Method meth = cl.getMethod(alternateMethodName, cldef);
Object[] params = {Integer.valueOf(value)};
meth.invoke(obj, params);
return;
} catch (NoSuchMethodException nsmex) {
// try boolean method
Class[] cldef = {Boolean.TYPE};
Method meth = cl.getMethod(alternateMethodName, cldef);
Object[] params = {Boolean.valueOf(value)};
meth.invoke(obj, params);
return;
}
} else throw new NoSuchMethodException(setMeth);
}
public void run() {
while (Thread.currentThread() == thread) {
try {
Socket socket = server.accept();
Client client = new Client(parent, socket);
if (clientValidationMethod != null) {
try {
clientValidationMethod.invoke(parent, new Object[] {this, client});
} catch (Exception e) {
// System.err.println("Disabling serverEvent() for port " + port);
e.printStackTrace();
}
}
if (client.active()) {
synchronized (clients) {
addClient(client);
if (serverEventMethod != null) {
try {
serverEventMethod.invoke(parent, new Object[] {this, client});
} catch (Exception e) {
// System.err.println("Disabling serverEvent() for port " + port);
e.printStackTrace();
}
}
}
}
} catch (SocketException e) {
// thrown when server.close() is called and server is waiting on accept
System.err.println("Server SocketException: " + e.getMessage());
thread = null;
} catch (IOException e) {
// errorMessage("run", e);
e.printStackTrace();
thread = null;
}
try {
Thread.sleep(8);
} catch (InterruptedException ex) {
}
}
}
public static void invokeSetMethod(Object obj, String prop, String value)
throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
Class cl = obj.getClass();
// change first letter to uppercase
String setMeth = "set" + prop.substring(0, 1).toUpperCase() + prop.substring(1);
// try string method
try {
Class[] cldef = {String.class};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {value};
meth.invoke(obj, params);
return;
} catch (NoSuchMethodException ex) {
try {
// try int method
Class[] cldef = {Integer.TYPE};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {Integer.valueOf(value)};
meth.invoke(obj, params);
return;
} catch (NoSuchMethodException nsmex) {
// try boolean method
Class[] cldef = {Boolean.TYPE};
Method meth = cl.getMethod(setMeth, cldef);
Object[] params = {Boolean.valueOf(value)};
meth.invoke(obj, params);
return;
}
}
}
/** Verify and invoke main if present in the specified class. */
public static void invokeApplicationMain(Class mainClass, String[] args)
throws InvocationTargetException, IllegalAccessException, ClassNotFoundException {
String err = localStrings.getLocalString("utility.no.main", "", new Object[] {mainClass});
// determine the main method using reflection
// verify that it is public static void and takes
// String[] as the only argument
Method mainMethod = null;
try {
mainMethod = mainClass.getMethod("main", new Class[] {String[].class});
} catch (NoSuchMethodException msme) {
_logger.log(Level.SEVERE, "enterprise_util.excep_in_utility", msme);
throw new ClassNotFoundException(err);
}
// check modifiers: public static
int modifiers = mainMethod.getModifiers();
if (!Modifier.isPublic(modifiers) || !Modifier.isStatic(modifiers)) {
err =
localStrings.getLocalString(
"utility.main.notpublicorstatic",
"The main method is either not public or not static");
_logger.log(Level.SEVERE, "enterprise_util.excep_in_utility_main.notpublicorstatic");
throw new ClassNotFoundException(err);
}
// check return type and exceptions
if (!mainMethod.getReturnType().equals(Void.TYPE)) {
err =
localStrings.getLocalString(
"utility.main.notvoid", "The main method's return type is not void ");
_logger.log(Level.SEVERE, "enterprise_util.excep_in_utility_main.notvoid");
throw new ClassNotFoundException(err);
}
// build args to the main and call it
Object params[] = new Object[1];
params[0] = args;
mainMethod.invoke(null, params);
}
/**
* Gets the specified method from a query module.
*
* @param mod query module object
* @param path path of the module
* @param name method name
* @param arity number of arguments
* @param qc query context
* @param ii input info
* @return method if found, {@code null} otherwise
* @throws QueryException query exception
*/
private static Method getModMethod(
final Object mod,
final String path,
final String name,
final long arity,
final QueryContext qc,
final InputInfo ii)
throws QueryException {
// find method with identical name and arity
Method meth = null;
for (final Method m : mod.getClass().getMethods()) {
if (m.getName().equals(name) && m.getParameterTypes().length == arity) {
if (meth != null) throw JAVAAMBIG_X.get(ii, "Q{" + path + '}' + name + '#' + arity);
meth = m;
}
}
if (meth == null) throw FUNCJAVA_X.get(ii, path + ':' + name);
// check if user has sufficient permissions to call the function
Perm perm = Perm.ADMIN;
final QueryModule.Requires req = meth.getAnnotation(QueryModule.Requires.class);
if (req != null) perm = Perm.get(req.value().name());
if (!qc.context.user.has(perm)) return null;
// Add module locks to QueryContext.
final QueryModule.Lock lock = meth.getAnnotation(QueryModule.Lock.class);
if (lock != null) {
for (final String read : lock.read()) qc.readLocks.add(DBLocking.MODULE_PREFIX + read);
for (final String write : lock.write()) qc.writeLocks.add(DBLocking.MODULE_PREFIX + write);
}
return meth;
}
public boolean handleCommand(String line, PrintWriter out) {
String[] split = line.split("[\t ]");
String commandName = split[0];
try {
Method[] methods = exportedInterface.getMethods();
for (Method method : methods) {
if (method.getName().equals(commandName) && method.getReturnType() == void.class) {
return invokeMethod(line, out, method, split);
}
}
throw new NoSuchMethodException();
} catch (NoSuchMethodException nsmex) {
out.println(fullName + ": didn't understand request \"" + line + "\".");
} catch (Exception ex) {
Log.warn(fullName + ": exception thrown while handling command \"" + line + "\".", ex);
out.println(fullName + ": request denied \"" + line + "\" (" + ex.toString() + ").");
} finally {
out.flush();
out.close();
}
return false;
}
private JSONArray getClassProperties(Class<?> clazz, int level) throws IntrospectionException {
JSONArray arr = new JSONArray();
TypeDiscoverer td = new TypeDiscoverer();
try {
for (PropertyDescriptor pd : Introspector.getBeanInfo(clazz).getPropertyDescriptors()) {
Method readMethod = pd.getReadMethod();
if (readMethod != null) {
if (readMethod.getDeclaringClass() == java.lang.Enum.class) {
// skip getDeclaringClass
continue;
} else if ("class".equals(pd.getName())) {
// skip getClass
continue;
}
} else {
// yields com.datatorrent.api.Context on JDK6 and
// com.datatorrent.api.Context.OperatorContext with JDK7
if ("up".equals(pd.getName())
&& com.datatorrent.api.Context.class.isAssignableFrom(pd.getPropertyType())) {
continue;
}
}
// LOG.info("name: " + pd.getName() + " type: " + pd.getPropertyType());
Class<?> propertyType = pd.getPropertyType();
if (propertyType != null) {
JSONObject propertyObj = new JSONObject();
propertyObj.put("name", pd.getName());
propertyObj.put("canGet", readMethod != null);
propertyObj.put("canSet", pd.getWriteMethod() != null);
if (readMethod != null) {
for (Class<?> c = clazz; c != null; c = c.getSuperclass()) {
OperatorClassInfo oci = classInfo.get(c.getName());
if (oci != null) {
MethodInfo getMethodInfo = oci.getMethods.get(readMethod.getName());
if (getMethodInfo != null) {
addTagsToProperties(getMethodInfo, propertyObj);
break;
}
}
}
// type can be a type symbol or parameterized type
td.setTypeArguments(clazz, readMethod.getGenericReturnType(), propertyObj);
} else {
if (pd.getWriteMethod() != null) {
td.setTypeArguments(
clazz, pd.getWriteMethod().getGenericParameterTypes()[0], propertyObj);
}
}
// if (!propertyType.isPrimitive() && !propertyType.isEnum() && !propertyType.isArray() &&
// !propertyType.getName().startsWith("java.lang") && level < MAX_PROPERTY_LEVELS) {
// propertyObj.put("properties", getClassProperties(propertyType, level + 1));
// }
arr.put(propertyObj);
}
}
} catch (JSONException ex) {
throw new RuntimeException(ex);
}
return arr;
}
/**
* Constructor.
*
* @param r HTTP servlet request
*/
BXServletRequest(final HttpServletRequest r) {
req = r;
method = Method.valueOf(r.getMethod());
url = r.getRequestURL().toString(); // MiltonUtils.stripContext(r);
REQUEST.set(r);
}
