Examples with SnapshotPrevayler org.prevayler.implementation.SnapshotPrevayler used on opensource projects

Example 1 with SnapshotPrevayler

use of org.prevayler.implementation.SnapshotPrevayler in project ACS by ACS-Community.

the class ManagerEngine method initializeManager.

/**
	 * Initialize and activate Manager.
	 */
private void initializeManager() throws Throwable {
    logger = ClientLogManager.getAcsLogManager().getLoggerForApplication("Manager", true);
    logger.info("Initializing Manager.");
    //
    // CORBA
    //
    // obtain CORBA Service
    corbaService = new DefaultCORBAService(logger);
    // get ORB
    final ORB orb = corbaService.getORB();
    if (orb == null) {
        CoreException ce = new CoreException("CORBA Service can not provide ORB.");
        throw ce;
    }
    // get RootPOA
    POA rootPOA = corbaService.getRootPOA();
    if (rootPOA == null) {
        CoreException ce = new CoreException("CORBA Service can not provide RootPOA.");
        throw ce;
    }
    //
    // Remote Directory
    //
    NamingServiceRemoteDirectory remoteDirectory = new NamingServiceRemoteDirectory(orb, logger);
    Context context = null;
    if (remoteDirectory != null)
        context = remoteDirectory.getContext();
    //
    // Initialize CORBA
    //
    // set USER_ID, PERSISTENT policies
    org.omg.CORBA.Policy[] policies = new org.omg.CORBA.Policy[2];
    /*
		// set USER_ID, PERSISTENT,BIDIRECTIONAL policies
		org.omg.CORBA.Policy [] policies = new org.omg.CORBA.Policy[3];
		*/
    policies[0] = rootPOA.create_id_assignment_policy(IdAssignmentPolicyValue.USER_ID);
    policies[1] = rootPOA.create_lifespan_policy(LifespanPolicyValue.PERSISTENT);
    /*
		// create BIDIRECTIONAL policy
		Any bidirValue = orb.create_any();
		BidirectionalPolicyValueHelper.insert(bidirValue, BOTH.value);
		policies[2] = orb.create_policy(BIDIRECTIONAL_POLICY_TYPE.value, bidirValue);
        */
    // create ManagerPOA
    managerPOA = rootPOA.create_POA("ManagerPOA", rootPOA.the_POAManager(), policies);
    // destroy policies
    for (int i = 0; i < policies.length; i++) policies[i].destroy();
    // initialize Manager implementation
    // allow object reference serialization 
    CORBAReferenceSerializator.setOrb(orb);
    manager = new ManagerImpl();
    manager.setDomain(MANAGER_DOMAIN);
    recoveryLocation = FileHelper.getTempFileName(null, RECOVERY_DIR_NAME);
    String readRecovery = System.getProperties().getProperty("Manager.recovery", "true");
    if (readRecovery.equalsIgnoreCase("false")) {
        // if we are not interested in recovery files just delete them
        File recoveryDir = new File(recoveryLocation);
        //recoveryDir.delete();
        File[] files = recoveryDir.listFiles();
        for (int i = 0; files != null && i < files.length; i++) files[i].delete();
        // Now check if there are log files left. Maybe user do not have enough permision
        // or we are didn't set proper permission before Manager killed.
        // That can lead to unwanted or illegal state so we will refuse to continue
        files = recoveryDir.listFiles();
        for (int i = 0; files != null && i < files.length; i++) {
            if (files[i].getName().endsWith(".commandLog"))
                throw new Exception("Some recovery files are left in recovery location probably because of permission\nUnable to start without recovery state!");
        }
    } else {
        // remove old recovery files
        RecoveryFilesRemover.removeRecoveryFiles(new File(recoveryLocation));
    }
    SnapshotPrevayler prevayler = null;
    if (isPrevaylerDisabled) {
        System.out.println("Prevayler disabled!");
    } else {
        prevayler = new SnapshotPrevayler(manager, recoveryLocation);
        if (readRecovery.equalsIgnoreCase("false")) {
            // just to invalidate prevaylers message
            System.out.println("Skipping saved manager state!");
        }
        manager = (ManagerImpl) prevayler.system();
    }
    CDBAccess cdbAccess = new CDBAccess(orb, logger);
    LogConfig logConfig = ClientLogManager.getAcsLogManager().getLogConfig();
    logConfig.setCDBLoggingConfigPath("MACI/Managers/Manager");
    logConfig.setCDB(cdbAccess.connectAndGetDAL());
    try {
        logConfig.initialize(false);
    } catch (LogConfigException ex) {
        // if the CDB can't be read, we still want to run the manager, so
        // we only log the problems
        logger.log(Level.FINE, "Failed to configure logging (default values will be used). Reason: " + ex.getMessage());
    }
    // initialize manager "mock" container services
    ManagerContainerServices managerContainerServices = new ManagerContainerServices(orb, managerPOA, cdbAccess.getDAL(), logger);
    manager.initialize(prevayler, cdbAccess, context, logger, managerContainerServices);
    manager.setShutdownImplementation(shutdownImplementation);
    // setup ORB profiling
    try {
        if (orb instanceof AcsProfilingORB) {
            AcsORBProfiler profiler = new ManagerOrbProfiler(manager, logger);
            ((AcsProfilingORB) orb).registerAcsORBProfiler(profiler);
            logger.finer("Orb profiling set up, using class " + ManagerOrbProfiler.class.getName());
        }
    } catch (Throwable th) {
        logger.log(Level.WARNING, "Failed to setup ORB profiling.", th);
    }
    if (prevayler != null) {
        FileHelper.setFileAttributes("g+w", recoveryLocation);
        // create new task for snapshoot creation,
        final long MINUTE_IN_MS = 60 * 1000;
        new RecoverySnapshotTask(prevayler, 1 * MINUTE_IN_MS, recoveryLocation, manager.getStatePersitenceFlag());
    }
    // initialize Manager CORBA Proxy (create servant)
    managerProxy = new ManagerProxyImpl(manager, logger);
    //activate object
    managerPOA.activate_object_with_id(MANAGER_ID, managerProxy);
    // get object reference from the servant
    org.omg.CORBA.Object obj = managerPOA.servant_to_reference(managerProxy);
    managerReference = ManagerHelper.narrow(obj);
    // get IOR
    String ior = orb.object_to_string(managerReference);
    // notify user
    logger.info("Manager activated with " + ior);
    // register special service components to the Manager
    manager.setManagerComponentReference(managerReference);
    // set transport
    manager.setTransport(new CORBATransport(orb, ior));
    // register NameService
    if (remoteDirectory != null) {
        String reference = remoteDirectory.getReference();
        if (reference != null) {
            // convert iiop to corbaloc
            if (reference.startsWith("iiop://")) {
                reference = reference.replaceFirst("iiop://", "corbaloc::");
                if (reference.charAt(reference.length() - 1) != '/')
                    reference += "/NameService";
                else
                    reference += "NameService";
            }
        }
        try {
            obj = NamingContextHelper.narrow(orb.string_to_object(reference));
        } catch (Exception ex) {
            // Something went wrong getting the NS
            logger.log(Level.SEVERE, "Error getting the NameServer. Manager exiting...");
            this.shutdownImplementation.shutdown(false);
        }
        manager.setRemoteDirectoryComponentReference(obj);
    }
    // intitialize federation here - after remote directory is set (if it is)
    // (this is not a nice solution)
    Hashtable federationDirectoryProperties = new Hashtable();
    // set CosNamingFactory 
    federationDirectoryProperties.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory");
    // set orb
    federationDirectoryProperties.put("java.naming.corba.orb", orb);
    manager.initializeFederation(federationDirectoryProperties);
    // initialize remote logging
    new Thread(new Runnable() {

        public void run() {
            ClientLogManager.getAcsLogManager().initRemoteLogging(orb, managerReference, manager.getHandle(), true);
        }
    }, "Remote logging initializer").start();
    manager.initializationDone();
}

Example 2 with SnapshotPrevayler

use of org.prevayler.implementation.SnapshotPrevayler in project ACS by ACS-Community.

the class ManagerImpl method setStatePersistence.

@Override
public void setStatePersistence(int id, boolean enable) throws AcsJNoPermissionEx {
    // TODO introduce new rights
    securityCheck(id, AccessRights.INTROSPECT_MANAGER);
    if (prevayler != null) {
        synchronized (prevayler) {
            // on enable, first take current snapshot to start with clean state
            if (enable) {
                // already enabled check
                if (statePersitenceFlag.get())
                    return;
                try {
                    synchronized (prevayler) {
                        statePersitenceFlag.set(true);
                        ((SnapshotPrevayler) prevayler).takeSnapshot();
                    }
                } catch (IOException e) {
                    // @todo better exception
                    statePersitenceFlag.set(false);
                    throw new NoResourcesException("Failed to create current state snapshot: " + e.toString());
                }
            } else {
                statePersitenceFlag.set(false);
            }
        }
    }
}

Example 3 with SnapshotPrevayler

use of org.prevayler.implementation.SnapshotPrevayler in project ACS by ACS-Community.

the class ManagerPrevaylerTest method setUp.

/**
	 * @see junit.framework.TestCase#setUp()
	 */
protected void setUp() throws Exception {
    logger.setLevel(Level.OFF);
    manager = new ManagerImpl();
    if (isPrevaylerDisabled) {
        prevayler = null;
        System.out.println("Prevayler disabled!");
    } else {
        String recoveryLocation = FileHelper.getTempFileName(null, RECOVERY_DIR_NAME);
        System.out.println("Removing old recovery files.");
        // remove old recovery files
        // if we are not interested in recovery files just delete them
        File recoveryDir = new File(recoveryLocation);
        //recoveryDir.delete();
        File[] files = recoveryDir.listFiles();
        for (int i = 0; files != null && i < files.length; i++) files[i].delete();
        // Now check if there are log files left. Maybe user do not have enough permision
        // or we are didn't set proper permission before Manager killed.
        // That can lead to unwanted or illegal state so we will refuse to continue
        files = recoveryDir.listFiles();
        for (int i = 0; files != null && i < files.length; i++) {
            if (files[i].getName().endsWith(".commandLog"))
                throw new Exception("Some recovery files are left in recovery location probably because of permission\nUnable to start without recovery state!");
        }
        prevayler = new SnapshotPrevayler(manager, recoveryLocation);
        manager = (ManagerImpl) prevayler.system();
    }
    corbaServce = new DefaultCORBAService(logger);
    manager.initialize(prevayler, new CDBAccess(corbaServce.getORB(), logger), null, logger, null);
    //manager.setDomain(domain);
    // enable prevayler (disabled by default)
    manager.getStatePersitenceFlag().set(true);
    transport = new TestTransport();
    manager.setTransport(transport);
}