Examples of com.cloud.utils.db.Transaction.rollback()

com.cloud.utils.db.Transaction.rollback()

                            _userStatsLogDao.persist(statsLog);
                        }
                        s_logger.debug("Successfully updated aggregate network stats");
                        txn.commit();
                    } catch (Exception e){
                        txn.rollback();
                        s_logger.debug("Failed to update aggregate network stats", e);
                    } finally {
                        scanLock.unlock();
                        txn.close();
                    }

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                    if (existingPermission == null) {
                        LaunchPermissionVO launchPermission = new LaunchPermissionVO(id, permittedAccount.getId());
                        _launchPermissionDao.persist(launchPermission);
                    }
                } else {
                    txn.rollback();
                    throw new InvalidParameterValueException("Unable to grant a launch permission to account " + accountName + " in domain id=" + domain.getUuid()
                            + ", account not found.  " + "No permissions updated, please verify the account names and retry.");
                }
            }
            txn.commit();

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                _configDao.update(Config.ConsoleProxyManagementState.key(), Config.ConsoleProxyManagementState.getCategory(), state.toString());
            }


            txn.commit();
        } catch (Throwable e) {
            txn.rollback();
        }
    }


    @Override
    public ConsoleProxyManagementState getManagementState() {

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                _configDao.update(Config.ConsoleProxyManagementState.key(), Config.ConsoleProxyManagementState.getCategory(), lastState.toString());
            }


            txn.commit();
        } catch (Throwable e) {
            txn.rollback();
        }
    }


    private ConsoleProxyManagementState getLastManagementState() {
        String value = _configDao.getValue(Config.ConsoleProxyManagementLastState.key());

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            }
            }
            
            txn.commit();
        } catch (final Exception e) {
            txn.rollback();
            throw new CloudRuntimeException("Problem updating stats after reboot/stop ", e);
        }
    }


    @Override @ActionEvent(eventType = EventTypes.EVENT_ROUTER_REBOOT, eventDescription = "rebooting router Vm", async = true)

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                try {
                    txn.start();
                    _routerDao.update(router.getId(), router);
                    txn.commit();
                } catch (Exception e) {
                    txn.rollback();
                    s_logger.warn("Unable to update router status for account: " + router.getAccountId());
                } finally {
                    txn.close();
                }
            }

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                                stats.setAggBytesReceived(stats.getNetBytesReceived() + stats.getCurrentBytesReceived());
                            }
                            _userStatsDao.update(stats.getId(), stats);
                            txn.commit();
                        } catch (Exception e) {
                            txn.rollback();
                            s_logger.warn("Unable to update user statistics for account: " + router.getAccountId()
                                    + " Rx: " + answer.getBytesReceived() + "; Tx: " + answer.getBytesSent());
                        } finally {
                            txn.close();
                        }

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        Transaction txn = Transaction.currentTxn();
        try {
            txn.start();


            if (_podDao.persist(pod) == null) {
                txn.rollback();
                throw new InternalErrorException("Failed to create new pod. Please contact Cloud Support.");
            }


            if (startIp != null) {
                _zoneDao.addPrivateIpAddress(zoneId, pod.getId(), startIp, endIp);

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            }


            txn.commit();


        } catch (Exception e) {
            txn.rollback();
            s_logger.error("Unable to create new pod due to " + e.getMessage(), e);
            throw new InternalErrorException("Failed to create new pod. Please contact Cloud Support.");
        }


        return pod;

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                s_logger.debug("submit async job-" + job.getId() + " = [ " + job.getUuid() + " ], details: " + job.toString());
            }
            publishOnEventBus(job, "submit");
            return job.getId();
        } catch(Exception e) {
            txt.rollback();
            String errMsg = "Unable to schedule async job for command " + job.getCmd() + ", unexpected exception.";
            s_logger.warn(errMsg, e);
            throw new CloudRuntimeException(errMsg);
        }
    }

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