Examples with StateMachineException org.apache.ratis.protocol.StateMachineException used on opensource projects

Example 1 with StateMachineException

use of org.apache.ratis.protocol.StateMachineException in project incubator-ratis by apache.

the class RaftLog method append.

/**
 * Generate a log entry for the given term and message, and append the entry.
 * Used by the leader.
 * @return the index of the new log entry.
 */
public long append(long term, TransactionContext operation, ClientId clientId, long callId) throws StateMachineException {
    checkLogState();
    try (AutoCloseableLock writeLock = writeLock()) {
        final long nextIndex = getNextIndex();
        // the SM wants to attach a logic depending on ordered execution in the log commit order.
        try {
            operation = operation.preAppendTransaction();
        } catch (IOException e) {
            throw new StateMachineException(selfId, e);
        }
        // build the log entry after calling the StateMachine
        final LogEntryProto e = ProtoUtils.toLogEntryProto(operation.getSMLogEntry(), term, nextIndex, clientId, callId);
        int entrySize = e.getSerializedSize();
        if (entrySize > maxBufferSize) {
            throw new StateMachineException(selfId, new RaftLogIOException("Log entry size " + entrySize + " exceeds the max buffer limit of " + maxBufferSize));
        }
        appendEntry(e);
        operation.setLogEntry(e);
        return nextIndex;
    }
}