Examples with ServicesDaemon alma.acsdaemon.ServicesDaemon used on opensource projects

Example 1 with ServicesDaemon

use of alma.acsdaemon.ServicesDaemon in project ACS by ACS-Community.

the class Executor method remoteDaemonForServices.

/**
	 * Starts or stops ACS via the ACS services daemon. 
	 * This call returns only when the action has completed.
	 * Exceptions will be returned instead of thrown.
	 * @return any exception that occurs underways
	 */
/* msc 2009-12: this method has never thrown exceptions, instead they can be detected through
	 * Flow listening, and as of today also by looking at the return value. Starting to throw exceptions
	 * would be too big a change that I don't want to risk. I have no time to verify it doesn't harm. */
public static Exception remoteDaemonForServices(String host, int instance, boolean startStop, String cmdFlags, NativeCommand.Listener listener) {
    if (listener != null) {
        listener.stdoutWritten(null, "\nIn daemon mode, output cannot be displayed.\n" + "See logs in <daemon-owner>/.acs/commandcenter on host " + host + "\n");
    }
    String info = ((startStop) ? "Starting" : "Stopping") + " Acs Suite on host '" + host + "' (instance " + instance + ")";
    remoteServicesDaemonFlow.reset(info);
    ServicesDaemon daemon = null;
    // msc 2014-11 ICT-3753: finer-grained logging
    String step = "";
    try {
        org.omg.CORBA.ORB orb;
        AcsCorba acsCorba = null;
        remoteServicesDaemonFlow.trying(RemoteServicesDaemonFlow.INIT_CORBA);
        step = "access acs-corba object";
        // throws OrbInitException
        acsCorba = firestarter.giveAcsCorba();
        step = "access orb";
        orb = acsCorba.getORB();
        remoteServicesDaemonFlow.success(RemoteServicesDaemonFlow.INIT_CORBA);
        remoteServicesDaemonFlow.trying(RemoteServicesDaemonFlow.CONNECT_DAEMON);
        step = "convert host name to daemon address";
        String daemonLoc = AcsLocations.convertToServicesDaemonLocation(host);
        step = "convert daemon address to corba reference";
        org.omg.CORBA.Object object = orb.string_to_object(daemonLoc);
        step = "narrow corba reference to daemon object";
        daemon = ServicesDaemonHelper.narrow(object);
        step = "sanity check daemon object";
        if (daemon == null)
            throw new NullPointerException("received null trying to retrieve acsdaemon " + daemonLoc);
        try {
            if (// this may be superfluous with daemons but shouldn't hurt either
            daemon._non_existent())
                log.log(Level.INFO, "acsdaemon '" + daemonLoc + "' reported as non_existent, trying to use it nonetheless.");
        } catch (Exception exc) {
            log.log(Level.INFO, "problem verifying acsdaemon " + daemonLoc + " exists, trying to use it anyhow.", exc);
        }
        remoteServicesDaemonFlow.success(RemoteServicesDaemonFlow.CONNECT_DAEMON);
        remoteServicesDaemonFlow.trying(RemoteServicesDaemonFlow.SEND_COMMAND);
        final BlockingQueue<Completion> sync = new ArrayBlockingQueue<Completion>(1);
        DaemonSequenceCallbackPOA daemonCallbackImpl = new DaemonSequenceCallbackPOA() {

            public void done(Completion comp) {
                sync.add(comp);
            }

            public void working(String service, String host, short instance_number, Completion comp) {
            }
        };
        step = "create daemon callback";
        DaemonSequenceCallback daemonCallback = DaemonSequenceCallbackHelper.narrow(acsCorba.activateOffShoot(daemonCallbackImpl, acsCorba.getRootPOA()));
        step = "send request to daemon";
        if (startStop == true)
            daemon.start_acs(daemonCallback, (short) instance, cmdFlags);
        else
            daemon.stop_acs(daemonCallback, (short) instance, cmdFlags);
        remoteServicesDaemonFlow.success(RemoteServicesDaemonFlow.SEND_COMMAND);
        remoteServicesDaemonFlow.trying(RemoteServicesDaemonFlow.AWAIT_RESPONSE);
        // The services daemon's start/stop methods are implemented asynchronously,
        // which means we need to wait for the callback notification.
        // @TODO: Perhaps a 10 minute timeout is too much though?
        step = "poll on reply queue";
        long timeout = 10;
        TimeUnit timeoutUnit = TimeUnit.MINUTES;
        Completion daemonReplyRaw = sync.poll(timeout, timeoutUnit);
        if (daemonReplyRaw == null)
            throw new RuntimeException("Timeout: Acs daemon did not " + (startStop ? "start" : "stop") + " Acs within " + timeout + " " + timeoutUnit);
        step = "deserialize daemon response";
        AcsJCompletion daemonReply = AcsJCompletion.fromCorbaCompletion(daemonReplyRaw);
        if (daemonReply.isError()) {
            AcsJException exc = daemonReply.getAcsJException();
            throw new Exception("daemon responded with error " + exc.getMessage(), exc);
        }
        remoteServicesDaemonFlow.success(RemoteServicesDaemonFlow.AWAIT_RESPONSE);
        return null;
    } catch (Exception exc) {
        remoteServicesDaemonFlow.failure(exc);
        return new Exception(remoteServicesDaemonFlow.current() + ":" + step + ": " + exc.getMessage(), exc);
    } finally {
        // msc 2014-11 ICT-3753: omc-to-daemon connection can get stale. this apparently helps.
        if (daemon != null) {
            try {
                daemon._release();
            } catch (Exception exc) {
                log.log(Level.INFO, "failure releasing internal resources for daemon, ignoring: " + exc.getMessage(), exc);
            }
        }
    }
}

Example 2 with ServicesDaemon

use of alma.acsdaemon.ServicesDaemon in project ACS by ACS-Community.

the class StartServicesHelper method getServicesDaemon.

/**
	 * Connects to the services daemon building the corba loc from its
	 * host address in ({@link #daemonHost}.
	 * 
	 * @return the reference to the services daemon
	 * 
	 * @throws GettingDaemonException in case of error getting the services daemon
	 */
private ServicesDaemon getServicesDaemon() throws GettingDaemonException {
    ServicesDaemon daemon;
    String daemonLoc = AcsLocations.convertToServicesDaemonLocation(daemonHost);
    logger.log(AcsLogLevel.DEBUG, "Getting services daemon from " + daemonHost);
    try {
        org.omg.CORBA.Object object = acsCorba.getORB().string_to_object(daemonLoc);
        daemon = ServicesDaemonHelper.narrow(object);
        if (daemon == null)
            throw new GettingDaemonException("Received null trying to retrieve acs services daemon on " + daemonHost);
        if (// this may be superfluous with daemons but shouldn't hurt either
        daemon._non_existent())
            throw new GettingDaemonException("Acs services daemon not existing on " + daemonHost);
    } catch (Throwable t) {
        throw new GettingDaemonException("Error getting the services daemon " + t.getMessage(), t);
    }
    return daemon;
}

Example 3 with ServicesDaemon

use of alma.acsdaemon.ServicesDaemon in project ACS by ACS-Community.

the class StartServicesHelper method startACSServices.

/** 
	 * Starts the services whose XML definition is in the parameter. 
	 * <P> 
	 * The real starting of services is delegated to {@link #internalStartServices(ServicesDaemon, ServiceDefinitionBuilder, String)}
	 * 
	 * The starting of the services is delegated to a acs service daemon. 
	 * @param xmlListOfServices The XML describing the list of services to start. 
	 * It is generally returned by getServicesDescription() 
	 * 
	 * @throws GettingDaemonException in case of error getting the services daemon
	 * @throws DaemonException In case of error from the daemon
	 */
public void startACSServices(String xmlListOfServices) throws GettingDaemonException, DaemonException {
    if (xmlListOfServices == null || xmlListOfServices.isEmpty()) {
        throw new IllegalArgumentException("The XML list of services can't be null nor empty");
    }
    // Get the reference to the daemon
    ServicesDaemon daemon = getServicesDaemon();
    // Get the service definition builder for the current instance
    ServiceDefinitionBuilder srvDefBuilder = null;
    try {
        srvDefBuilder = daemon.create_service_definition_builder((short) instance);
    } catch (Throwable t) {
        throw new DaemonException("Error getting the service definition builder", t);
    }
    logger.log(AcsLogLevel.DEBUG, "ServiceDefinitionBuilder got from the ACS services daemon");
    try {
        srvDefBuilder.add_services_definition(xmlListOfServices);
    } catch (Throwable t) {
        throw new DaemonException("Error adding the list of services to the daemon", t);
    }
    StringHolder errorStr = new StringHolder();
    if (!srvDefBuilder.is_valid(errorStr)) {
        // Error in the XML
        throw new DaemonException("Invalid XML list of services: " + errorStr.value);
    }
    internalStartServices(daemon, xmlListOfServices);
}

Example 4 with ServicesDaemon

use of alma.acsdaemon.ServicesDaemon in project ACS by ACS-Community.

the class StartServicesHelper method stopServices.

/** 
	 * Stops the services whose definition is in the passed parameter. 
	 * 
	 * @param xmlListOfServices The XML describing the list of services to stop.
	 * @throws GettingDaemonException In case of error getting the services daemon 
	 * @throws DaemonException In case of error from the services daemon
	 */
public void stopServices(String xmlListOfServices) throws GettingDaemonException, DaemonException {
    if (xmlListOfServices == null || xmlListOfServices.isEmpty()) {
        throw new IllegalArgumentException("The XML list of services can't be null nor empty");
    }
    logger.log(AcsLogLevel.DEBUG, "Stopping ACS with the services daemon");
    // Get the reference to the daemon
    ServicesDaemon daemon = getServicesDaemon();
    DaemonSequenceCallbackImpl callback = new DaemonSequenceCallbackImpl(logger, false);
    DaemonSequenceCallback daemonSequenceCallback = null;
    try {
        daemonSequenceCallback = DaemonSequenceCallbackHelper.narrow(acsCorba.activateOffShoot(callback, acsCorba.getRootPOA()));
    } catch (Throwable t) {
        throw new DaemonException("Error instantiating the callback", t);
    }
    logger.log(AcsLogLevel.DEBUG, "Asking the services daemon to stop services");
    try {
        daemon.stop_services(xmlListOfServices, daemonSequenceCallback);
    } catch (Throwable t) {
        throw new DaemonException("Error stopping services", t);
    }
}

Example 5 with ServicesDaemon

use of alma.acsdaemon.ServicesDaemon in project ACS by ACS-Community.

the class StartServicesHelper method startACSServices.

/** 
	 * Starts the services as they are defined in the TMCDB. 
	 * This method is a convenience that before first gets the list of services from the TMCDB 
	 * by calling getServicesDescription() and then executes startACSServices(String xmlListOfServices)
	 * <P> 
	 * The real starting of services is delegated to {@link #internalStartServices(ServicesDaemon, ServiceDefinitionBuilder, String)}
	 * 
	 * @return A struct with the An XML representation of the started services, to be used in {@link #stopServices}
	 * 			and a list of services as they have been read from the TMCDB
	 * 
	 * @throws GettingDaemonException in case of error getting the services daemon
	 * @throws HibernateException In case of error reading the services from the TMCDB
	 * @throws DaemonExceptionIn case of error from the daemon
	 * @throws TMCDBException If the list of services read from the TMCDB is empty
	 * @see AlarmServicesDefinitionHolder 
	 */
public AlarmServicesDefinitionHolder startACSServices() throws GettingDaemonException, HibernateException, DaemonException, TMCDBException {
    logger.log(AcsLogLevel.DEBUG, "Starting ACS with services daemon");
    // Get the reference to the daemon
    ServicesDaemon daemon = getServicesDaemon();
    logger.log(AcsLogLevel.DEBUG, "Services daemon acquired");
    // Get the services from the TMCDB
    AlarmServicesDefinitionHolder holder = internalGetServicesDescription(daemon);
    // Start the services
    internalStartServices(daemon, holder.xmlServicesDefinition);
    return holder;
}