/**
* Invokes an operation and puts the return value into map
*
* @param map
* @param operation Protocol.OperationName[args], e.g. STABLE.foo[arg1 arg2 arg3]
*/
protected void handleOperation(Map<String, String> map, String operation) throws Exception {
int index = operation.indexOf(".");
if (index == -1)
throw new IllegalArgumentException(
"operation " + operation + " is missing the protocol name");
String prot_name = operation.substring(0, index);
Protocol prot = prot_stack.findProtocol(prot_name);
if (prot == null) return; // less drastic than throwing an exception...
int args_index = operation.indexOf("[");
String method_name;
if (args_index != -1) method_name = operation.substring(index + 1, args_index).trim();
else method_name = operation.substring(index + 1).trim();
String[] args = null;
if (args_index != -1) {
int end_index = operation.indexOf("]");
if (end_index == -1) throw new IllegalArgumentException("] not found");
List<String> str_args =
Util.parseCommaDelimitedStrings(operation.substring(args_index + 1, end_index));
Object[] strings = str_args.toArray();
args = new String[strings.length];
for (int i = 0; i < strings.length; i++) args[i] = (String) strings[i];
}
Method method = MethodCall.findMethod(prot.getClass(), method_name, args);
if (method == null) {
log.warn(
Util.getMessage("MethodNotFound"),
local_addr,
prot.getClass().getSimpleName(),
method_name);
return;
}
MethodCall call = new MethodCall(method);
Object[] converted_args = null;
if (args != null) {
converted_args = new Object[args.length];
Class<?>[] types = method.getParameterTypes();
for (int i = 0; i < args.length; i++)
converted_args[i] = MethodCall.convert(args[i], types[i]);
}
Object retval = call.invoke(prot, converted_args);
if (retval != null) map.put(prot_name + "." + method_name, retval.toString());
}
