@Override
public SyncedFlushResult syncFlush(String syncId, CommitId expectedCommitId)
throws EngineException {
// best effort attempt before we acquire locks
ensureOpen();
if (indexWriter.hasUncommittedChanges()) {
logger.trace("can't sync commit [{}]. have pending changes", syncId);
return SyncedFlushResult.PENDING_OPERATIONS;
}
if (expectedCommitId.idsEqual(lastCommittedSegmentInfos.getId()) == false) {
logger.trace("can't sync commit [{}]. current commit id is not equal to expected.", syncId);
return SyncedFlushResult.COMMIT_MISMATCH;
}
try (ReleasableLock lock = writeLock.acquire()) {
ensureOpen();
ensureCanFlush();
if (indexWriter.hasUncommittedChanges()) {
logger.trace("can't sync commit [{}]. have pending changes", syncId);
return SyncedFlushResult.PENDING_OPERATIONS;
}
if (expectedCommitId.idsEqual(lastCommittedSegmentInfos.getId()) == false) {
logger.trace("can't sync commit [{}]. current commit id is not equal to expected.", syncId);
return SyncedFlushResult.COMMIT_MISMATCH;
}
logger.trace("starting sync commit [{}]", syncId);
commitIndexWriter(indexWriter, translog, syncId);
logger.debug("successfully sync committed. sync id [{}].", syncId);
lastCommittedSegmentInfos = store.readLastCommittedSegmentsInfo();
return SyncedFlushResult.SUCCESS;
} catch (IOException ex) {
maybeFailEngine("sync commit", ex);
throw new EngineException(shardId, "failed to sync commit", ex);
}
}
public RefsModel(
@NotNull Map<VirtualFile, CompressedRefs> refs,
@NotNull Set<Integer> heads,
@NotNull VcsLogStorage hashMap,
@NotNull Map<VirtualFile, VcsLogProvider> providers) {
myRefs = refs;
myHashMap = hashMap;
myBestRefForHead = new TIntObjectHashMap<>();
myRootForHead = new TIntObjectHashMap<>();
for (int head : heads) {
CommitId commitId = myHashMap.getCommitId(head);
if (commitId != null) {
VirtualFile root = commitId.getRoot();
myRootForHead.put(head, root);
Optional<VcsRef> bestRef =
myRefs
.get(root)
.refsToCommit(head)
.stream()
.min(providers.get(root).getReferenceManager().getBranchLayoutComparator());
if (bestRef.isPresent()) {
myBestRefForHead.put(head, bestRef.get());
} else {
LOG.warn("No references at head " + commitId);
}
}
}
}
public Collection<VcsRef> refsToCommit(int index) {
CommitId id = myHashMap.getCommitId(index);
if (id == null) return Collections.emptyList();
VirtualFile root = id.getRoot();
return myRefs.get(root).refsToCommit(index);
}
