Examples with SegmentedRaftLogInputStream org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogInputStream used on opensource projects

Example 1 with SegmentedRaftLogInputStream

use of org.apache.ratis.server.raftlog.segmented.SegmentedRaftLogInputStream in project incubator-ratis by apache.

the class SimpleStateMachine4Testing method loadSnapshot.

private synchronized long loadSnapshot(SingleFileSnapshotInfo snapshot) throws IOException {
    if (snapshot == null || !snapshot.getFile().getPath().toFile().exists()) {
        LOG.info("The snapshot file {} does not exist", snapshot == null ? null : snapshot.getFile());
        return RaftLog.INVALID_LOG_INDEX;
    } else {
        LOG.info("Loading snapshot {}", snapshot);
        final long endIndex = snapshot.getIndex();
        try (SegmentedRaftLogInputStream in = new SegmentedRaftLogInputStream(snapshot.getFile().getPath().toFile(), 0, endIndex, false)) {
            LogEntryProto entry;
            while ((entry = in.nextEntry()) != null) {
                put(entry);
                updateLastAppliedTermIndex(entry.getTerm(), entry.getIndex());
            }
        }
        // The end index is greater than last entry in indexMap as it also
        // includes the configuration and metadata entries
        Preconditions.assertTrue(!indexMap.isEmpty() && endIndex >= indexMap.lastKey(), "endIndex=%s, indexMap=%s", endIndex, indexMap);
        this.endIndexLastCkpt = endIndex;
        setLastAppliedTermIndex(snapshot.getTermIndex());
        this.storage.loadLatestSnapshot();
        return endIndex;
    }
}