public void close() {
if (jusl) {
try {
// Call java.util.ServiceLoader.reload
Method reloadMethod = loaderClass.getMethod("reload");
reloadMethod.invoke(loader);
} catch (Exception e) {; // Ignore problems during a call to reload.
}
}
}
ServiceIterator(ClassLoader classLoader, Log log) {
String loadMethodName;
this.log = log;
try {
try {
loaderClass = Class.forName("java.util.ServiceLoader");
loadMethodName = "load";
jusl = true;
} catch (ClassNotFoundException cnfe) {
try {
loaderClass = Class.forName("sun.misc.Service");
loadMethodName = "providers";
jusl = false;
} catch (ClassNotFoundException cnfe2) {
// Fail softly if a loader is not actually needed.
this.iterator = handleServiceLoaderUnavailability("proc.no.service", null);
return;
}
}
// java.util.ServiceLoader.load or sun.misc.Service.providers
Method loadMethod = loaderClass.getMethod(loadMethodName, Class.class, ClassLoader.class);
Object result = loadMethod.invoke(null, Processor.class, classLoader);
// For java.util.ServiceLoader, we have to call another
// method to get the iterator.
if (jusl) {
loader = result; // Store ServiceLoader to call reload later
Method m = loaderClass.getMethod("iterator");
result = m.invoke(result); // serviceLoader.iterator();
}
// The result should now be an iterator.
this.iterator = (Iterator<?>) result;
} catch (Throwable t) {
log.error("proc.service.problem");
throw new Abort(t);
}
}
protected Object callMethod(Object o, Class<?> clazz, String name) {
try {
Method m = clazz.getDeclaredMethod(name);
boolean prev = m.isAccessible();
m.setAccessible(true);
try {
return m.invoke(o);
} finally {
m.setAccessible(prev);
}
} catch (ReflectiveOperationException e) {
return e;
} catch (SecurityException e) {
return e;
}
}
protected Object getField(Object o, Class<?> clazz, String name) {
try {
Field f = clazz.getDeclaredField(name);
boolean prev = f.isAccessible();
f.setAccessible(true);
try {
return f.get(o);
} finally {
f.setAccessible(prev);
}
} catch (ReflectiveOperationException e) {
return e;
} catch (SecurityException e) {
return e;
}
}
protected String info(Class<?> clazz, Object internal, Object external) {
return String.format("%s,%s,%s", clazz.getSimpleName(), internal, external);
}