private long recoverPendingTransactions(
TransactionSubscriber subscriber, long initialTransaction, File initialJournal)
throws IOException {
long recoveringTransaction = PrevaylerDirectory.journalVersion(initialJournal);
File journal = initialJournal;
DurableInputStream input = new DurableInputStream(journal, _monitor);
while (true) {
try {
Chunk chunk = input.readChunk();
if (recoveringTransaction >= initialTransaction) {
if (!journal.getName().endsWith(_journalSuffix)) {
throw new IOException(
"There are transactions needing to be recovered from "
+ journal
+ ", but only "
+ _journalSuffix
+ " files are supported");
}
TransactionTimestamp entry = TransactionTimestamp.fromChunk(chunk);
if (entry.systemVersion() != recoveringTransaction) {
throw new IOException(
"Expected " + recoveringTransaction + " but was " + entry.systemVersion());
}
subscriber.receive(entry);
}
recoveringTransaction++;
} catch (EOFException eof) {
File nextFile = _directory.journalFile(recoveringTransaction, _journalSuffix);
if (journal.equals(nextFile))
PrevaylerDirectory.renameUnusedFile(
journal); // The first transaction in this log file is incomplete. We need to reuse
// this file name.
journal = nextFile;
if (!journal.exists()) break;
input = new DurableInputStream(journal, _monitor);
}
}
return recoveringTransaction;
}
