private void forceCloseOnPendingRequests() {
for (MySqlRequest request : requestQueue) {
if (request.getRequest().tryCancel()) {
request.getFuture().trySetException(new DbSessionClosedException("Connection is closed"));
}
}
}
@Override
public DbSessionFuture<Void> rollback() {
if (!isInTransaction()) {
throw new DbException("No transaction has been started to rollback");
}
checkClosed();
synchronized (lock) {
final MySqlRequest request = queRequest(MySqlRequests.rollbackTransaction(this));
isInTransaction = false;
return (DbSessionFuture<Void>) request.getFuture();
}
}
public MySqlRequest dequeRequest() {
synchronized (lock) {
final MySqlRequest request = requestQueue.poll();
if (logger.isDebugEnabled()) {
logger.debug("Dequeued request: {}", request);
}
if (request.getRequest().wasCancelled()) {
if (logger.isDebugEnabled()) {
logger.debug("Request has been cancelled: {}", request);
}
return dequeRequest();
}
return request;
}
}
public MySqlRequest forceQueRequest(MySqlRequest request) {
synchronized (lock) {
requestQueue.add(request);
channel.write(request.getRequest());
return request;
}
}
@Override
public DbFuture<Void> close(CloseMode closeMode) throws DbException {
synchronized (lock) {
if (null == closeFuture) {
final MySqlRequest closeRequest = MySqlRequests.createCloseRequest(this);
closeFuture = closeRequest.getFuture();
closeFuture.addListener(
new DbListener<Void>() {
@Override
public void onCompletion(DbFuture<Void> future) {
MySqlConnection.this.connectionManager.removeConnection(MySqlConnection.this);
}
});
if (closeMode == CloseMode.CANCEL_PENDING_OPERATIONS) {
forceCloseOnPendingRequests();
}
forceQueRequest(closeRequest);
return closeFuture;
} else {
return closeFuture;
}
}
}