Examples of GlobalLock

ariba.util.core.GlobalLock
Interface for a GlobalLock. The GlobalLockingService implementation will return an instance of one of these for the locking implementation. All operations on a lock object (extending the timeout, releasing the lock, etc) happen through this interface. @aribaapi ariba
com.cloud.utils.db.GlobalLock

Examples of com.cloud.utils.db.GlobalLock


    @Override
    public void prepareSecondaryStorageStore(String storageUrl) {
        String mountPoint = getMountPoint(storageUrl);


        GlobalLock lock = GlobalLock.getInternLock("prepare.systemvm");
        try {
            if(lock.lock(3600)) {
                try {
                    File patchFolder = new File(mountPoint + "/systemvm");
                    if(!patchFolder.exists()) {
                        if(!patchFolder.mkdirs()) {
                            String msg = "Unable to create systemvm folder on secondary storage. location: " + patchFolder.toString();
                            s_logger.error(msg);
                            throw new CloudRuntimeException(msg);
                        }
                    }


                    File srcIso = getSystemVMPatchIsoFile();
                    File destIso = new File(mountPoint + "/systemvm/" + getSystemVMIsoFileNameOnDatastore());
                    if(!destIso.exists()) {
                        s_logger.info("Inject SSH key pairs before copying systemvm.iso into secondary storage");
                        _configServer.updateKeyPairs();


                        s_logger.info("Copy System VM patch ISO file to secondary storage. source ISO: " + srcIso.getAbsolutePath() +
                                ", destination: " + destIso.getAbsolutePath());
                        try {
                            FileUtil.copyfile(srcIso, destIso);
                        } catch(IOException e) {
                            s_logger.error("Unexpected exception ", e);


                            String msg = "Unable to copy systemvm ISO on secondary storage. src location: " + srcIso.toString() + ", dest location: " + destIso;
                            s_logger.error(msg);
                            throw new CloudRuntimeException(msg);
                        }
                    } else {
                        if(s_logger.isTraceEnabled()) {
                            s_logger.trace("SystemVM ISO file " + destIso.getPath() + " already exists");
                        }
                    }
                } finally {
                    lock.unlock();
                }
            }
        } finally {
            lock.releaseRef();
        }
    }

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Examples of com.cloud.utils.db.GlobalLock

        }


        @Override
        public void run() {
            UserContext.registerContext(_accountMgr.getSystemUser().getId(), _accountMgr.getSystemAccount(), null, false);
            GlobalLock scanLock = GlobalLock.getInternLock("UserVMExpunge");
            try {
                if (scanLock.lock(ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_COOPERATION)) {
                    try {
                        List<UserVmVO> vms = _vmDao.findDestroyedVms(new Date(
                                System.currentTimeMillis()
                                - ((long) _expungeDelay << 10)));
                        if (s_logger.isInfoEnabled()) {
                            if (vms.size() == 0) {
                                s_logger.trace("Found " + vms.size()
                                        + " vms to expunge.");
                            } else {
                                s_logger.info("Found " + vms.size()
                                        + " vms to expunge.");
                            }
                        }
                        for (UserVmVO vm : vms) {
                            try {
                                expunge(vm,
                                        _accountMgr.getSystemUser().getId(),
                                        _accountMgr.getSystemAccount());
                            } catch (Exception e) {
                                s_logger.warn("Unable to expunge " + vm, e);
                            }
                        }
                    } catch (Exception e) {
                        s_logger.error("Caught the following Exception", e);
                    } finally {
                        scanLock.unlock();
                    }
                }
            } finally {
                scanLock.releaseRef();
                UserContext.unregisterContext();
            }
        }

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Examples of com.cloud.utils.db.GlobalLock

        long physicalNetworkId = guestConfig.getPhysicalNetworkId();
        NetworkOfferingVO offering = _networkOfferingDao.findById(guestConfig.getNetworkOfferingId());
        String provider = _ntwkSrvcProviderDao.getProviderForServiceInNetwork(guestConfig.getId(), Service.Lb);


        while (retry) {
            GlobalLock deviceMapLock = GlobalLock.getInternLock("LoadBalancerAllocLock");
            Transaction txn = Transaction.currentTxn();
            try {
                if (deviceMapLock.lock(120)) {
                    try {
                        boolean dedicatedLB = offering.getDedicatedLB(); // does network offering supports a dedicated
// load balancer?
                        long lbDeviceId;


                        txn.start();
                        try {
                            // FIXME: should the device allocation be done during network implement phase or do a
                            // lazy allocation when first rule for the network is configured??


                            // find a load balancer device for this network as per the network offering
                            lbDevice = findSuitableLoadBalancerForNetwork(guestConfig, dedicatedLB);
                            lbDeviceId = lbDevice.getId();


                            // persist the load balancer device id that will be used for this network. Once a network
                            // is implemented on a LB device then later on all rules will be programmed on to same
// device
                            NetworkExternalLoadBalancerVO networkLB = new NetworkExternalLoadBalancerVO(guestConfig.getId(), lbDeviceId);
                            _networkExternalLBDao.persist(networkLB);


                            // mark device to be either dedicated or shared use
                            lbDevice.setAllocationState(dedicatedLB ? LBDeviceAllocationState.Dedicated : LBDeviceAllocationState.Shared);
                            _externalLoadBalancerDeviceDao.update(lbDeviceId, lbDevice);


                            txn.commit();


                            // allocated load balancer for the network, so skip retry
                            tryLbProvisioning = false;
                            retry = false;
                        } catch (InsufficientCapacityException exception) {
                            // if already attempted to provision load balancer then throw out of capacity exception,
                            if (tryLbProvisioning) {
                                retry = false;
                                // TODO: throwing warning instead of error for now as its possible another provider can
// service this network
                                s_logger.warn("There are no load balancer device with the capacity for implementing this network");
                                throw exception;
                            } else {
                                tryLbProvisioning = true; // if possible provision a LB appliance in to the physical
// network
                            }
                        }
                    } finally {
                        deviceMapLock.unlock();
                        if (lbDevice == null) {
                            txn.rollback();
                        }
                    }
                }
            } finally {
                deviceMapLock.releaseRef();
            }


            // there are no LB devices or there is no free capacity on the devices in the physical network so provision
// a new LB appliance
            if (tryLbProvisioning) {

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Examples of com.cloud.utils.db.GlobalLock

    }


    @DB
    protected boolean freeLoadBalancerForNetwork(Network guestConfig) {
        Transaction txn = Transaction.currentTxn();
        GlobalLock deviceMapLock = GlobalLock.getInternLock("LoadBalancerAllocLock");


        try {
            if (deviceMapLock.lock(120)) {
                txn.start();
                // since network is shutdown remove the network mapping to the load balancer device
                NetworkExternalLoadBalancerVO networkLBDevice = _networkExternalLBDao.findByNetworkId(guestConfig.getId());
                long lbDeviceId = networkLBDevice.getExternalLBDeviceId();
                _networkExternalLBDao.remove(networkLBDevice.getId());


                List<NetworkExternalLoadBalancerVO> ntwksMapped = _networkExternalLBDao.listByLoadBalancerDeviceId(networkLBDevice.getExternalLBDeviceId());
                ExternalLoadBalancerDeviceVO lbDevice = _externalLoadBalancerDeviceDao.findById(lbDeviceId);
                boolean lbInUse = !(ntwksMapped == null || ntwksMapped.isEmpty());
                boolean lbCloudManaged = lbDevice.getIsManagedDevice();


                if (!lbInUse && !lbCloudManaged) {
                    // this is the last network mapped to the load balancer device so set device allocation state to be
// free
                    lbDevice.setAllocationState(LBDeviceAllocationState.Free);
                    _externalLoadBalancerDeviceDao.update(lbDevice.getId(), lbDevice);
                }


                // commit the changes before sending agent command to destroy cloudstack managed LB
                txn.commit();


                if (!lbInUse && lbCloudManaged) {
                    // send DestroyLoadBalancerApplianceCommand to the host where load balancer appliance is provisioned
                    Host lbHost = _hostDao.findById(lbDevice.getHostId());
                    String lbIP = lbHost.getPrivateIpAddress();
                    DestroyLoadBalancerApplianceCommand lbDeleteCmd = new DestroyLoadBalancerApplianceCommand(lbIP);
                    DestroyLoadBalancerApplianceAnswer answer = null;
                    try {
                        answer = (DestroyLoadBalancerApplianceAnswer) _agentMgr.easySend(lbDevice.getParentHostId(), lbDeleteCmd);
                        if (answer == null || !answer.getResult()) {
                            s_logger.warn("Failed to destoy load balancer appliance used by the network" + guestConfig.getId() + " due to " + answer.getDetails());
                        }
                    } catch (Exception e) {
                        s_logger.warn("Failed to destroy load balancer appliance used by the network" + guestConfig.getId() + " due to " + e.getMessage());
                    }


                    if (s_logger.isDebugEnabled()) {
                        s_logger.debug("Successfully destroyed load balancer appliance used for the network" + guestConfig.getId());
                    }
                    deviceMapLock.unlock();


                    // remove the provisioned load balancer appliance from cloudstack
                    deleteExternalLoadBalancer(lbHost.getId());


                    // release the private IP back to dc pool, as the load balancer appliance is now destroyed
                    _dcDao.releasePrivateIpAddress(lbHost.getPrivateIpAddress(), guestConfig.getDataCenterId(), null);


                    // release the public IP allocated for this LB appliance
                    DetailVO publicIpDetail = _hostDetailDao.findDetail(lbHost.getId(), "publicip");
                    IPAddressVO ipVo = _ipAddressDao.findByIpAndDcId(guestConfig.getDataCenterId(), publicIpDetail.toString());
                    _networkMgr.disassociatePublicIpAddress(ipVo.getId(), _accountMgr.getSystemUser().getId(), _accountMgr.getSystemAccount());
                } else {
                    deviceMapLock.unlock();
                }


                return true;
            } else {
                s_logger.error("Failed to release load balancer device for the network" + guestConfig.getId() + "as failed to acquire lock ");
                return false;
            }
        } catch (Exception exception) {
            txn.rollback();
            s_logger.error("Failed to release load balancer device for the network" + guestConfig.getId() + " due to " + exception.getMessage());
        } finally {
            deviceMapLock.releaseRef();
        }


        return false;
    }

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Examples of com.cloud.utils.db.GlobalLock

    
    protected class VpcCleanupTask implements Runnable {
        @Override
        public void run() {
            try {
                GlobalLock lock = GlobalLock.getInternLock("VpcCleanup");
                if (lock == null) {
                    s_logger.debug("Couldn't get the global lock");
                    return;
                }


                if (!lock.lock(30)) {
                    s_logger.debug("Couldn't lock the db");
                    return;
                }


                Transaction txn = null;
                try {
                    txn = Transaction.open(Transaction.CLOUD_DB);


                    // Cleanup inactive VPCs
                    List<VpcVO> inactiveVpcs = _vpcDao.listInactiveVpcs();
                    s_logger.info("Found " + inactiveVpcs.size() + " removed VPCs to cleanup");
                    for (VpcVO vpc : inactiveVpcs) {
                        s_logger.debug("Cleaning up " + vpc);
                        destroyVpc(vpc, _accountMgr.getAccount(Account.ACCOUNT_ID_SYSTEM), User.UID_SYSTEM); 
                    }
                } catch (Exception e) {
                    s_logger.error("Exception ", e);
                } finally {
                    if (txn != null) {
                        txn.close();
                    }
                    lock.unlock();
                }
            } catch (Exception e) {
                s_logger.error("Exception ", e);
            }
        }

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Examples of com.cloud.utils.db.GlobalLock


    }


    @Override
    public void check() {
        GlobalLock lock = GlobalLock.getInternLock("DatabaseUpgrade");
        try {
            s_logger.info("Grabbing lock to check for database upgrade.");
            if (!lock.lock(20 * 60)) {
                throw new CloudRuntimeException("Unable to acquire lock to check for database integrity.");
            }


            try {
                String dbVersion = _dao.getCurrentVersion();
                String currentVersion = this.getClass().getPackage().getImplementationVersion();


                if (currentVersion == null)
                    return;


                s_logger.info("DB version = " + dbVersion + " Code Version = " + currentVersion);


                if (Version.compare(Version.trimToPatch(dbVersion), Version.trimToPatch(currentVersion)) > 0) {
                    throw new CloudRuntimeException("Database version " + dbVersion + " is higher than management software version " + currentVersion);
                }


                if (Version.compare(Version.trimToPatch(dbVersion), Version.trimToPatch(currentVersion)) == 0) {
                    s_logger.info("DB version and code version matches so no upgrade needed.");
                    return;
                }


                upgrade(dbVersion, currentVersion);
            } finally {
                lock.unlock();
            }
        } finally {
            lock.releaseRef();
        }
    }

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Examples of com.cloud.utils.db.GlobalLock


    @Override
    public void prepareSecondaryStorageStore(String storageUrl) {
        String mountPoint = getMountPoint(storageUrl);


        GlobalLock lock = GlobalLock.getInternLock("prepare.systemvm");
        try {
            if(lock.lock(3600)) {
                try {
                    File patchFolder = new File(mountPoint + "/systemvm");
                    if(!patchFolder.exists()) {
                        if(!patchFolder.mkdirs()) {
                            String msg = "Unable to create systemvm folder on secondary storage. location: " + patchFolder.toString();
                            s_logger.error(msg);
                            throw new CloudRuntimeException(msg);
                        }
                    }


                    File srcIso = getSystemVMPatchIsoFile();
                    File destIso = new File(mountPoint + "/systemvm/" + getSystemVMIsoFileNameOnDatastore());
                    if(!destIso.exists()) {
                        s_logger.info("Inject SSH key pairs before copying systemvm.iso into secondary storage");
                        _configServer.updateKeyPairs();


                        s_logger.info("Copy System VM patch ISO file to secondary storage. source ISO: " + srcIso.getAbsolutePath() +
                                ", destination: " + destIso.getAbsolutePath());
                        try {
                            FileUtil.copyfile(srcIso, destIso);


                            s_logger.info("System VM patch ISO file is copied to secondary storage. source ISO: " + srcIso.getAbsolutePath() +
                                    ", destination: " + destIso.getAbsolutePath());
                        } catch(IOException e) {
                            s_logger.error("Unexpected exception ", e);


                            String msg = "Unable to copy systemvm ISO on secondary storage. src location: " + srcIso.toString() + ", dest location: " + destIso;
                            s_logger.error(msg);
                            throw new CloudRuntimeException(msg);
                        }
                    } else {
                        if(s_logger.isTraceEnabled()) {
                            s_logger.trace("SystemVM ISO file " + destIso.getPath() + " already exists");
                        }
                    }
                } finally {
                    lock.unlock();
                }
            }
        } finally {
            lock.releaseRef();
        }
    }

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Examples of com.cloud.utils.db.GlobalLock

    private String getAllocProxyLockName() {
        return "consoleproxy.alloc";
    }


    private void prepareDefaultCertificate() {
        GlobalLock lock = GlobalLock.getInternLock("consoleproxy.cert.setup");
        try {
            if (lock.lock(ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_SYNC)) {
                KeystoreVO ksVo = _ksDao.findByName(CERTIFICATE_NAME);
                if (ksVo == null) {
                    _ksDao.save(CERTIFICATE_NAME, ConsoleProxyVO.certContent, ConsoleProxyVO.keyContent, "realhostip.com");
                    KeystoreVO caRoot = new KeystoreVO();
                    caRoot.setCertificate(ConsoleProxyVO.rootCa);
                    caRoot.setDomainSuffix("realhostip.com");
                    caRoot.setName("root");
                    caRoot.setIndex(0);
                    _ksDao.persist(caRoot);
                }
                lock.unlock();
            }
        } finally {
            lock.releaseRef();
        }
    }

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Examples of com.cloud.utils.db.GlobalLock

        public ExpungeTask() {
        }


        @Override
        protected void runInContext() {
            GlobalLock scanLock = GlobalLock.getInternLock("UserVMExpunge");
            try {
                if (scanLock.lock(ACQUIRE_GLOBAL_LOCK_TIMEOUT_FOR_COOPERATION)) {
                    try {
                        List<UserVmVO> vms = _vmDao.findDestroyedVms(new Date(
                                System.currentTimeMillis()
                                - ((long) _expungeDelay << 10)));
                        if (s_logger.isInfoEnabled()) {
                            if (vms.size() == 0) {
                                s_logger.trace("Found " + vms.size()
                                        + " vms to expunge.");
                            } else {
                                s_logger.info("Found " + vms.size()
                                        + " vms to expunge.");
                            }
                        }
                        for (UserVmVO vm : vms) {
                            try {
                                expunge(vm,
                                        _accountMgr.getSystemUser().getId(),
                                        _accountMgr.getSystemAccount());
                            } catch (Exception e) {
                                s_logger.warn("Unable to expunge " + vm, e);
                            }
                        }
                    } catch (Exception e) {
                        s_logger.error("Caught the following Exception", e);
                    } finally {
                        scanLock.unlock();
                    }
                }
            } finally {
                scanLock.releaseRef();
            }
        }

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Examples of com.cloud.utils.db.GlobalLock

    }


    protected class TransitionTask extends ManagedContextRunnable {
        @Override
        protected void runInContext() {
            GlobalLock lock = GlobalLock.getInternLock("TransitionChecking");
            if (lock == null) {
                s_logger.debug("Couldn't get the global lock");
                return;
            }


            if (!lock.lock(30)) {
                s_logger.debug("Couldn't lock the db");
                return;
            }
            try {
                scanStalledVMInTransitionStateOnDisconnectedHosts();


                List<VMInstanceVO> instances = _vmDao.findVMInTransition(new Date(new Date().getTime() - (AgentManager.Wait.value() * 1000)), State.Starting, State.Stopping);
                for (VMInstanceVO instance : instances) {
                    State state = instance.getState();
                    if (state == State.Stopping) {
                        _haMgr.scheduleStop(instance, instance.getHostId(), WorkType.CheckStop);
                    } else if (state == State.Starting) {
                        _haMgr.scheduleRestart(instance, true);
                    }
                }
            } catch (Exception e) {
                s_logger.warn("Caught the following exception on transition checking", e);
            } finally {
                lock.unlock();
            }
        }

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