/**
* Message contains MethodCall. Execute it against *this* object and return result. Use
* MethodCall.invoke() to do this. Return result.
*/
public Object handle(Message req) throws Exception {
if (server_obj == null) {
log.error(Util.getMessage("NoMethodHandlerIsRegisteredDiscardingRequest"));
return null;
}
if (req == null || req.getLength() == 0) {
log.error(Util.getMessage("MessageOrMessageBufferIsNull"));
return null;
}
Object body =
req_marshaller != null
? req_marshaller.objectFromBuffer(req.getRawBuffer(), req.getOffset(), req.getLength())
: req.getObject();
if (!(body instanceof MethodCall))
throw new IllegalArgumentException("message does not contain a MethodCall object");
MethodCall method_call = (MethodCall) body;
if (log.isTraceEnabled()) log.trace("[sender=%s], method_call: %s", req.getSrc(), method_call);
if (method_call.getMode() == MethodCall.ID) {
if (method_lookup == null)
throw new Exception(
String.format(
"MethodCall uses ID=%d, but method_lookup has not been set", method_call.getId()));
Method m = method_lookup.findMethod(method_call.getId());
if (m == null) throw new Exception("no method found for " + method_call.getId());
method_call.setMethod(m);
}
return method_call.invoke(server_obj);
}
/**
* Message contains MethodCall. Execute it against *this* object and return result. Use
* MethodCall.invoke() to do this. Return result.
*/
public Object handle(Message req) {
Object body;
MethodCall method_call;
if (server_obj == null) {
if (log.isErrorEnabled()) log.error("no method handler is registered. Discarding request.");
return null;
}
if (req == null || req.getLength() == 0) {
if (log.isErrorEnabled()) log.error("message or message buffer is null");
return null;
}
try {
body =
req_marshaller != null
? req_marshaller.objectFromByteBuffer(
req.getBuffer(), req.getOffset(), req.getLength())
: req.getObject();
} catch (Throwable e) {
if (log.isErrorEnabled()) log.error("exception marshalling object", e);
return e;
}
if (!(body instanceof MethodCall)) {
if (log.isErrorEnabled()) log.error("message does not contain a MethodCall object");
// create an exception to represent this and return it
return new IllegalArgumentException("message does not contain a MethodCall object");
}
method_call = (MethodCall) body;
try {
if (log.isTraceEnabled())
log.trace("[sender=" + req.getSrc() + "], method_call: " + method_call);
if (method_call.getMode() == MethodCall.ID) {
if (method_lookup == null)
throw new Exception(
"MethodCall uses ID=" + method_call.getId() + ", but method_lookup has not been set");
Method m = method_lookup.findMethod(method_call.getId());
if (m == null) throw new Exception("no method found for " + method_call.getId());
method_call.setMethod(m);
}
return method_call.invoke(server_obj);
} catch (Throwable x) {
return x;
}
}
public Buffer objectToBuffer(Object obj) throws Exception {
MethodCall call = (MethodCall) obj;
ByteBuffer buf;
switch (call.getId()) {
case START:
case GET_CONFIG:
buf = ByteBuffer.allocate(Global.BYTE_SIZE);
buf.put((byte) call.getId());
return new Buffer(buf.array());
case SET_OOB:
case SET_SYNC:
return new Buffer(booleanBuffer(call.getId(), (Boolean) call.getArgs()[0]));
case SET_NUM_MSGS:
case SET_NUM_THREADS:
case SET_MSG_SIZE:
case SET_ANYCAST_COUNT:
return new Buffer(intBuffer(call.getId(), (Integer) call.getArgs()[0]));
case GET:
return new Buffer(longBuffer(call.getId(), (Long) call.getArgs()[0]));
case PUT:
Long long_arg = (Long) call.getArgs()[0];
byte[] arg2 = (byte[]) call.getArgs()[1];
buf =
ByteBuffer.allocate(
Global.BYTE_SIZE + Global.INT_SIZE + Global.LONG_SIZE + arg2.length);
buf.put((byte) call.getId())
.putLong(long_arg)
.putInt(arg2.length)
.put(arg2, 0, arg2.length);
return new Buffer(buf.array());
case SET_READ_PERCENTAGE:
Double double_arg = (Double) call.getArgs()[0];
buf = ByteBuffer.allocate(Global.BYTE_SIZE + Global.DOUBLE_SIZE);
buf.put((byte) call.getId()).putDouble(double_arg);
return new Buffer(buf.array());
default:
throw new IllegalStateException("method " + call.getMethod() + " not known");
}
}
