public Hashtable runFunc(String function, Vector params) {
Hashtable h = null;
Object o = null;
try {
System.out.println("RPCClient: running function: " + function);
o = xmlrpc.execute(function, params);
} catch (XmlRpcException e) {
h = new Hashtable();
h.put("status", "error");
h.put("error", "Cannot execute XML-RPC query: (" + e.getCause() + ":" + e.toString() + ")");
return h;
} catch (IOException e) {
h = new Hashtable();
h.put("status", "error");
h.put("error", "IO Exception executing XML-RPC query: " + e.toString());
return h;
}
if (o == null) {
h = new Hashtable();
h.put("status", "error");
h.put("error", "Object is NULL");
return h;
}
if (!o.getClass().isInstance(new Hashtable())) {
h = new Hashtable();
h.put("status", "error");
h.put("error", "Returned object is not a Hashtable - it is a " + o.getClass().getName());
return h;
}
h = (Hashtable) o;
if (!h.containsKey("status")) {
h.put("status", "error");
h.put("error", "No status in result hash");
return h;
}
String status = (String) h.get("status");
if (status.equals("error") && !h.containsKey("error")) {
h.put("error", "Unknown error - no error key found in hash");
}
return h;
}
@Override
protected Map dispatch(String method_call, Object[] method_params)
throws XmlRpcException, XenAPIException {
if (method_call.equals("session.local_logout")
|| method_call.equals("session.slave_local_login_with_password")
|| method_call.equals("session.logout")) {
return super.dispatch(method_call, method_params);
}
if (method_call.equals("session.login_with_password")) {
int retries = 0;
while (retries++ < _retries) {
try {
return super.dispatch(method_call, method_params);
} catch (XmlRpcException e) {
Throwable cause = e.getCause();
if (cause == null || !(cause instanceof SocketException)) {
throw e;
}
if (retries >= _retries) {
throw e;
}
s_logger.debug("Unable to login...retrying " + retries);
}
try {
Thread.sleep(_interval);
} catch (InterruptedException e) {
s_logger.debug("Man....I was just getting comfortable there....who woke me up?");
}
}
} else {
int retries = 0;
while (retries++ < _retries) {
try {
return super.dispatch(method_call, method_params);
} catch (Types.SessionInvalid e) {
s_logger.debug(
"Session is invalid for method: "
+ method_call
+ " due to "
+ e.getMessage()
+ ". Reconnecting...retry="
+ retries);
if (retries >= _retries) {
removeConnect(_poolUuid);
throw e;
}
loginWithPassword(this, _username, _password, APIVersion.latest().toString());
method_params[0] = getSessionReference();
} catch (XmlRpcClientException e) {
s_logger.debug(
"XmlRpcClientException for method: " + method_call + " due to " + e.getMessage());
removeConnect(_poolUuid);
throw e;
} catch (XmlRpcException e) {
s_logger.debug(
"XmlRpcException for method: "
+ method_call
+ " due to "
+ e.getMessage()
+ ". Reconnecting...retry="
+ retries);
if (retries >= _retries) {
removeConnect(_poolUuid);
throw e;
}
Throwable cause = e.getCause();
if (cause == null || !(cause instanceof SocketException)) {
removeConnect(_poolUuid);
throw e;
}
} catch (Types.HostIsSlave e) {
s_logger.debug(
"HostIsSlave Exception for method: "
+ method_call
+ " due to "
+ e.getMessage()
+ ". Reconnecting...retry="
+ retries);
removeConnect(_poolUuid);
throw e;
}
try {
Thread.sleep(_interval);
} catch (InterruptedException e) {
s_logger.info("Who woke me from my slumber?");
}
}
assert false : "We should never get here";
removeConnect(_poolUuid);
}
throw new CloudRuntimeException(
"After " + _retries + " retries, we cannot contact the host ");
}