private void dumpLog(final Uid u) {
EditableTransaction act =
TransactionTypeManager.getInstance().getTransaction(_transactionType, u);
if (act == null) System.out.println("Dump failed! Unknown type " + _transactionType);
else System.out.println(act.toString());
}
private final void setTransactionType(String command) {
int index = command.indexOf(SPACE);
int end = command.indexOf(END);
if (index != -1) _transactionType = new String(command.substring(index + 1, end).trim());
else _transactionType = DEFAULT_TYPE;
if (!TransactionTypeManager.getInstance().present(_transactionType)) {
System.err.println("Transaction log type " + _transactionType + " not supported.");
_transactionType = "";
}
}
private final boolean supportedLog(String logID) throws ObjectStoreException, IOException {
Uid id = new Uid(logID);
if (id.equals(Uid.nullUid())) return false;
ObjectStoreIterator iter =
new ObjectStoreIterator(
StoreManager.getRecoveryStore(),
TransactionTypeManager.getInstance().getTransactionType(_transactionType));
Uid u;
do {
u = iter.iterate();
if (u.equals(id)) return true;
} while (Uid.nullUid().notEquals(u));
return false;
}
private final void listLogs(String type) throws IOException {
InputObjectState buff = new InputObjectState();
try {
if (StoreManager.getRecoveryStore()
.allObjUids(TransactionTypeManager.getInstance().getTransactionType(type), buff)) {
Uid u = null;
do {
u = UidHelper.unpackFrom(buff);
if (Uid.nullUid().notEquals(u)) {
System.out.println("Log: " + u);
}
} while (Uid.nullUid().notEquals(u));
}
} catch (final ObjectStoreException ex) {
throw new IOException();
}
}
public void doWork() {
boolean attached = false; // move these to member variables
boolean exit = false;
boolean selected = false;
while (!exit) {
byte[] command = new byte[MAX_COMMAND_LEN];
try {
System.out.print("\n" + _transactionType + " - " + _currentLog + " > ");
System.in.read(command);
String commandString = new String(command);
Command com = validCommand(commandString);
switch (com) {
case quit:
return;
case help:
help();
break;
case ls:
if (!selected) System.err.println("No transaction type selected.");
else {
if (_currentLog == "") listLogs(_transactionType);
else dumpLog(new Uid(_currentLog));
}
System.out.println();
break;
case select:
if (attached) {
System.out.println("Detaching from existing log.");
attached = false;
}
setTransactionType(commandString);
if ("".equals(_transactionType)) {
System.err.println("Unsupported type.");
selected = false;
} else selected = true;
break;
case attach:
if (attached) System.err.println("Already attached.");
else {
setLogId(commandString);
if ("".equals(_currentLog)) {
System.err.println("Invalid log id.");
} else attached = true;
}
break;
case detach:
if (!attached) System.err.println("Not attached.");
_currentLog = "";
attached = false;
break;
case forget:
if (!attached) System.err.println("Not attached.");
Uid u = new Uid(_currentLog);
EditableTransaction act =
TransactionTypeManager.getInstance().getTransaction(_transactionType, u);
try {
act.moveHeuristicToPrepared(getIndex(commandString));
} catch (final IndexOutOfBoundsException ex) {
System.err.println("Invalid index.");
}
dumpLog(u);
break;
case delete:
if (!attached) System.err.println("Not attached.");
Uid uid = new Uid(_currentLog);
EditableTransaction ract =
TransactionTypeManager.getInstance().getTransaction(_transactionType, uid);
try {
ract.deleteHeuristicParticipant(getIndex(commandString));
} catch (final IndexOutOfBoundsException ex) {
System.err.println("Invalid index.");
}
dumpLog(uid);
break;
case types:
printSupportedTypes();
break;
default:
System.err.println("Invalid command " + new String(command));
break;
}
} catch (final Exception ex) {
ex.printStackTrace();
}
}
}
