private ArrayList<String> addToBill(ArrayList<String> finalBill, RMResult result) {
ArrayList<String> tempBill = new ArrayList<>(Arrays.asList(result.AsString().split("\n")));
if (finalBill.size() == 0) {
finalBill.add(0, tempBill.get(0));
}
tempBill.remove(0);
tempBill.remove(tempBill.size() - 1);
finalBill.addAll(tempBill);
return finalBill;
}
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]);
}
private RMResult processIfComposite(String requestString) {
// Execute a composite method for this request if necessary.
// Returns a result, or null if the request corresponds to
// no composite action.
RMResult result = null;
String[] parts = requestString.split(",");
switch (parts[0]) {
case Command.INTERFACE_DELETE_CUSTOMER:
{
for (int i = 0; i < 4; ++i) {
result = processAtomicRequest(requestString, _rmIps[i], _rmPorts[i]);
}
}
break;
case Command.INTERFACE_RESERVE_ITINERARY:
{
// requestString = "command, id, cid, flight1, ..., flightn, location, isCarDesired,
// isRoomDesired"
ArrayList<String> flightNumbers =
new ArrayList<>(Arrays.asList(requestString.split(",")));
flightNumbers.remove(0);
String id = flightNumbers.remove(0).trim();
String customerId = flightNumbers.remove(0).trim();
boolean isRoomDesired =
Boolean.parseBoolean(flightNumbers.remove(flightNumbers.size() - 1).trim());
boolean isCarDesired =
Boolean.parseBoolean(flightNumbers.remove(flightNumbers.size() - 1).trim());
String location = flightNumbers.remove(flightNumbers.size() - 1).trim();
for (String flightNumber : flightNumbers) {
result =
processAtomicRequest(
Command.INTERFACE_QUERY_FLIGHT + ", " + id + ", " + flightNumber.trim(),
_rmIps[0],
_rmPorts[0]);
if (result.AsInt() <= 0) {
return new RMResult(false);
}
}
if (isCarDesired) {
result =
processAtomicRequest(
Command.INTERFACE_QUERY_CARS + ", " + id + ", " + location,
_rmIps[1],
_rmPorts[1]);
if (result.AsInt() <= 0) {
return new RMResult(false);
}
}
if (isRoomDesired) {
result =
processAtomicRequest(
Command.INTERFACE_QUERY_ROOMS + ", " + id + ", " + location,
_rmIps[2],
_rmPorts[2]);
if (result.AsInt() <= 0) {
return new RMResult(false);
}
}
for (String flightNumber : flightNumbers) {
String command =
Command.INTERFACE_RESERVE_FLIGHT
+ ", "
+ id
+ ", "
+ customerId
+ ", "
+ flightNumber.trim();
result = processIfCIDRequired(command);
if (!result.AsBool()) {
return result;
}
}
if (isCarDesired) {
String command =
Command.INTERFACE_RESERVE_CAR + ", " + id + ", " + customerId + ", " + location;
result = processIfCIDRequired(command);
if (!result.AsBool()) {
return result;
}
}
if (isRoomDesired) {
String command =
Command.INTERFACE_RESERVE_ROOM + ", " + id + ", " + customerId + ", " + location;
result = processIfCIDRequired(command);
if (!result.AsBool()) {
return result;
}
}
}
break;
case Command.INTERFACE_QUERY_CUSTOMER_INFO:
{
ArrayList<String> finalBill = new ArrayList<>();
// i < 3 to exclude customer rm
for (int i = 0; i < 3; ++i) {
result = processAtomicRequest(requestString, _rmIps[i], _rmPorts[i]);
if (!(result.AsString().equals(""))) {
finalBill = addToBill(finalBill, result);
}
}
String resultString =
"Customer either does not exist or has not made any reservation yet.";
if (finalBill.size() != 0) {
finalBill = addBillTotal(finalBill);
finalBill.add(finalBill.size(), "}");
resultString = String.join("\n", finalBill);
}
result = new RMResult(resultString);
}
break;
default:
break;
}
return result;
}