/**
* Set the Exception that is causing this txn to abort. It will need to be processed later on.
* This is a thread-safe operation. Only the first error will be stored.
*
* @param error
*/
public synchronized void setPendingError(SerializableException error) {
assert (error != null) : "Trying to set a null error for txn #" + this.txn_id;
if (this.pending_error == null) {
if (debug.val)
LOG.warn(
String.format(
"%s - Got %s error for txn: %s",
this, error.getClass().getSimpleName(), error.getMessage()));
this.pending_error = error;
}
}
@Override
protected void flattenToBuffer(final DBBPool pool) throws IOException {
int msgsize = 4 + 4 + 8 + 1 + 1 + 1 + 2;
assert (m_exception == null || m_status != SUCCESS);
if (m_exception != null) {
msgsize += m_exception.getSerializedSize();
} else {
msgsize += 4; // Still serialize exception length 0
}
// stupid lame flattening of the tables
ByteBuffer tableBytes = null;
if (m_dependencyCount > 0) {
FastSerializer fs = new FastSerializer();
try {
for (int i = 0; i < m_dependencyCount; i++) fs.writeObject(m_dependencies.get(i));
} catch (IOException e) {
e.printStackTrace();
assert (false);
}
tableBytes = fs.getBuffer();
msgsize += tableBytes.remaining();
msgsize += 4 * m_dependencyCount;
}
if (m_buffer == null) {
m_container = pool.acquire(msgsize + 1 + HEADER_SIZE);
m_buffer = m_container.b;
}
setBufferSize(msgsize + 1, pool);
m_buffer.position(HEADER_SIZE);
m_buffer.put(FRAGMENT_RESPONSE_ID);
m_buffer.putInt(m_executorSiteId);
m_buffer.putInt(m_destinationSiteId);
m_buffer.putLong(m_txnId);
m_buffer.put(m_status);
m_buffer.put((byte) (m_dirty ? 1 : 0));
m_buffer.put((byte) (m_recovering ? 1 : 0));
m_buffer.putShort(m_dependencyCount);
for (int i = 0; i < m_dependencyCount; i++) m_buffer.putInt(m_dependencyIds.get(i));
if (tableBytes != null) m_buffer.put(tableBytes);
if (m_exception != null) {
m_exception.serializeToBuffer(m_buffer);
} else {
m_buffer.putInt(0);
}
m_buffer.limit(m_buffer.position());
}
@Override
protected void initFromBuffer() {
m_buffer.position(HEADER_SIZE + 1); // skip the msg id
m_executorSiteId = m_buffer.getInt();
m_destinationSiteId = m_buffer.getInt();
m_txnId = m_buffer.getLong();
m_status = m_buffer.get();
m_dirty = m_buffer.get() == 0 ? false : true;
m_recovering = m_buffer.get() == 0 ? false : true;
m_dependencyCount = m_buffer.getShort();
// assert(m_dependencyCount <= 50);
for (int i = 0; i < m_dependencyCount; i++) m_dependencyIds.add(m_buffer.getInt());
for (int i = 0; i < m_dependencyCount; i++) {
FastDeserializer fds = new FastDeserializer(m_buffer);
try {
m_dependencies.add(fds.readObject(VoltTable.class));
} catch (IOException e) {
e.printStackTrace();
assert (false);
}
}
m_exception = SerializableException.deserializeFromBuffer(m_buffer);
}
