private RMResult processAtomicCustomerRequest(String requestString) {
// Process the given request by first checking that the given customer
// exists, and if yes creating it at the relevant RM as necessary.
Integer cid = getCustomerId(requestString);
RMResult existenceCheck =
processAtomicRequest(Command.SERVER_CHECK_CUSTOMER_EXISTS + ",1," + cid);
if (existenceCheck.IsError()) {
return existenceCheck;
}
if (!existenceCheck.AsBool()) {
RMResult failure = new RMResult(new Exception("Customer " + cid + " does not exist."));
return failure;
}
// Create the customer on the given RM (no side-effects if customer already exists.
int rmId = getRMIndexForRequest(requestString);
processAtomicRequest("newcustomerid,1," + cid, _rmIps[rmId], _rmPorts[rmId]);
// Actually execute the request
return processAtomicRequest(requestString, _rmIps[rmId], _rmPorts[rmId]);
}
