public long takeSnapshot()

in ratis-logservice/src/main/java/org/apache/ratis/logservice/server/LogStateMachine.java [192:213]

19 lines of code
2 McCabe index (conditional complexity)


  public long takeSnapshot() {
    final TermIndex last;
    try(AutoCloseableLock readLock = readLock()) {
      last = getLastAppliedTermIndex();
    }

    final File snapshotFile =  storage.getSnapshotFile(last.getTerm(), last.getIndex());
    LOG.info("Taking a snapshot to file {}", snapshotFile);

    try(AutoCloseableLock readLock = readLock();
        ObjectOutputStream out = new ObjectOutputStream(
        new BufferedOutputStream(new FileOutputStream(snapshotFile)))) {
      out.writeLong(length);
      out.writeLong(dataRecordsSize);
      out.writeObject(state);
    } catch(IOException ioe) {
      LOG.warn("Failed to write snapshot file \"" + snapshotFile
          + "\", last applied index=" + last);
    }

    return last.getIndex();
  }