Examples with LocalFileMeta io.dingodb.raft.entity.LocalFileMetaOutter.LocalFileMeta used on opensource projects

Example 6 with LocalFileMeta

use of io.dingodb.raft.entity.LocalFileMetaOutter.LocalFileMeta in project dingo by dingodb.

the class CheckpointFile method load.

public Checkpoint load() throws IOException {
    final ProtoBufFile file = new ProtoBufFile(this.path);
    final LocalFileMeta meta = file.load();
    if (meta != null) {
        final byte[] data = meta.getUserMeta().toByteArray();
        Checkpoint checkpoint = new Checkpoint(null, -1);
        if (checkpoint.decode(data)) {
            return checkpoint;
        }
    }
    return null;
}

Example 7 with LocalFileMeta

use of io.dingodb.raft.entity.LocalFileMetaOutter.LocalFileMeta in project dingo by dingodb.

the class LocalSnapshotCopier method filterBeforeCopy.

boolean filterBeforeCopy(final LocalSnapshotWriter writer, final SnapshotReader lastSnapshot) throws IOException {
    final Set<String> existingFiles = writer.listFiles();
    final ArrayDeque<String> toRemove = new ArrayDeque<>();
    for (final String file : existingFiles) {
        if (this.remoteSnapshot.getFileMeta(file) == null) {
            toRemove.add(file);
            writer.removeFile(file);
        }
    }
    final Set<String> remoteFiles = this.remoteSnapshot.listFiles();
    for (final String fileName : remoteFiles) {
        final LocalFileMeta remoteMeta = (LocalFileMeta) this.remoteSnapshot.getFileMeta(fileName);
        Requires.requireNonNull(remoteMeta, "remoteMeta");
        if (!remoteMeta.hasChecksum()) {
            // Re-download file if this file doesn't have checksum
            writer.removeFile(fileName);
            toRemove.add(fileName);
            continue;
        }
        LocalFileMeta localMeta = (LocalFileMeta) writer.getFileMeta(fileName);
        if (localMeta != null) {
            if (localMeta.hasChecksum() && localMeta.getChecksum().equals(remoteMeta.getChecksum())) {
                LOG.info("Keep file={} checksum={} in {}", fileName, remoteMeta.getChecksum(), writer.getPath());
                continue;
            }
            // Remove files from writer so that the file is to be copied from
            // remote_snapshot or last_snapshot
            writer.removeFile(fileName);
            toRemove.add(fileName);
        }
        // Try find files in last_snapshot
        if (lastSnapshot == null) {
            continue;
        }
        if ((localMeta = (LocalFileMeta) lastSnapshot.getFileMeta(fileName)) == null) {
            continue;
        }
        if (!localMeta.hasChecksum() || !localMeta.getChecksum().equals(remoteMeta.getChecksum())) {
            continue;
        }
        LOG.info("Found the same file ={} checksum={} in lastSnapshot={}", fileName, remoteMeta.getChecksum(), lastSnapshot.getPath());
        if (localMeta.getSource() == FileSource.FILE_SOURCE_LOCAL) {
            final String sourcePath = lastSnapshot.getPath() + File.separator + fileName;
            final String destPath = writer.getPath() + File.separator + fileName;
            FileUtils.deleteQuietly(new File(destPath));
            try {
                Files.createLink(Paths.get(destPath), Paths.get(sourcePath));
            } catch (final IOException e) {
                LOG.error("Fail to link {} to {}", sourcePath, destPath, e);
                continue;
            }
            // Don't delete linked file
            if (!toRemove.isEmpty() && toRemove.peekLast().equals(fileName)) {
                toRemove.pollLast();
            }
        }
        // Copy file from last_snapshot
        writer.addFile(fileName, localMeta);
    }
    if (!writer.sync()) {
        LOG.error("Fail to sync writer on path={}", writer.getPath());
        return false;
    }
    for (final String fileName : toRemove) {
        final String removePath = writer.getPath() + File.separator + fileName;
        FileUtils.deleteQuietly(new File(removePath));
        LOG.info("Deleted file: {}", removePath);
    }
    return true;
}

Example 8 with LocalFileMeta

use of io.dingodb.raft.entity.LocalFileMetaOutter.LocalFileMeta in project dingo by dingodb.

the class LocalSnapshotWriter method addFile.

@Override
public boolean addFile(final String fileName, final Message fileMeta) {
    final Builder metaBuilder = LocalFileMeta.newBuilder();
    if (fileMeta != null) {
        metaBuilder.mergeFrom(fileMeta);
    }
    final LocalFileMeta meta = metaBuilder.build();
    return this.metaTable.addFile(fileName, meta);
}

Example 9 with LocalFileMeta

use of io.dingodb.raft.entity.LocalFileMetaOutter.LocalFileMeta in project dingo by dingodb.

the class SnapshotFileReader method readFile.

@Override
public int readFile(final ByteBufferCollector metaBufferCollector, final String fileName, final long offset, final long maxCount) throws IOException, RetryAgainException {
    // read the whole meta file.
    if (fileName.equals(Snapshot.JRAFT_SNAPSHOT_META_FILE)) {
        final ByteBuffer metaBuf = this.metaTable.saveToByteBufferAsRemote();
        // because bufRef will flip the buffer before using, so we must set the meta buffer position to it's limit.
        metaBuf.position(metaBuf.limit());
        metaBufferCollector.setBuffer(metaBuf);
        return EOF;
    }
    final LocalFileMeta fileMeta = this.metaTable.getFileMeta(fileName);
    if (fileMeta == null) {
        throw new FileNotFoundException("LocalFileMeta not found for " + fileName);
    }
    // go through throttle
    long newMaxCount = maxCount;
    if (this.snapshotThrottle != null) {
        newMaxCount = this.snapshotThrottle.throttledByThroughput(maxCount);
        if (newMaxCount < maxCount) {
            // throughput is throttled to 0, try again.
            if (newMaxCount == 0) {
                throw new RetryAgainException("readFile throttled by throughput");
            }
        }
    }
    return readFileWithMeta(metaBufferCollector, fileName, fileMeta, offset, newMaxCount);
}