Examples of com.cloud.agent.Listener

com.cloud.agent.Listener
There are several types of events that the AgentManager forwards 1. Agent Connect & Disconnect 2. Commands sent by the agent. 3. Answers sent by the agent.

        }


        @Override
        protected void runInContext() {
            try {
                Listener listener = unregisterListener(_seq);
                if (listener != null) {
                    cancel(_seq);
                    listener.processTimeout(_id, _seq);
                }
            } catch (Exception e) {
                s_logger.warn("Exception ", e);
            }
        }

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    }


    @Override
    public void cancel(final long seq) {
        if (forForward()) {
            Listener listener = getListener(seq);
            if (listener != null && listener instanceof SynchronousListener) {
                SynchronousListener synchronous = (SynchronousListener)listener;
                String peerName = synchronous.getPeer();
                if (peerName != null) {
                    if (s_clusteredAgentMgr != null) {

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    protected synchronized void cancel(final long seq) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug(log(seq, "Cancelling."));
        }
        final Listener listener = _waitForList.remove(seq);
        if (listener != null) {
            listener.processDisconnect(_id, Status.Disconnected);
        }
        int index = findRequest(seq);
        if (index >= 0) {
            _requests.remove(index);
        }

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        } else {
            final Set<Map.Entry<Long, Listener>> entries = _waitForList.entrySet();
            final Iterator<Map.Entry<Long, Listener>> it = entries.iterator();
            while (it.hasNext()) {
                final Map.Entry<Long, Listener> entry = it.next();
                final Listener monitor = entry.getValue();
                if (!monitor.isRecurring()) {
                    //TODO - remove this debug statement later
                    s_logger.debug("Listener is " + entry.getValue() + " waiting on " + entry.getKey());
                    nonRecurringListenersList.add(monitor);
                }
           }

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        final Answer[] answers = resp.getAnswers();


        boolean processed = false;


        try {
            Listener monitor = getListener(seq);


            if (monitor == null) {
                if ( answers[0] != null && answers[0].getResult() ) {
                    processed = true;
                }
                if (s_logger.isDebugEnabled()) {
                    s_logger.debug(log(seq, "Unable to find listener."));
                }
            } else {
                processed = monitor.processAnswers(_id, seq, answers);
                if (s_logger.isTraceEnabled()) {
                    s_logger.trace(log(seq, (processed ? "" : " did not ") + " processed "));
                }


                if (!monitor.isRecurring()) {
                    unregisterListener(seq);
                }
            }
            
            _agentMgr.notifyAnswersToMonitors(_id, seq, answers);

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        final Set<Map.Entry<Long, Listener>> entries = _waitForList.entrySet();
        final Iterator<Map.Entry<Long, Listener>> it = entries.iterator();
        while (it.hasNext()) {
            final Map.Entry<Long, Listener> entry = it.next();
            it.remove();
            final Listener monitor = entry.getValue();
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(log(entry.getKey(), "Sending disconnect to " + monitor.getClass()));
            }
            monitor.processDisconnect(_id, state);
        }
    }

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        }


        @Override
        public void run() {
            try {
                Listener listener = unregisterListener(_seq);
                if (listener != null) {
                    cancel(_seq);
                    listener.processTimeout(_id, _seq);
                }
            } catch (Exception e) {
                s_logger.warn("Exception ", e);
            }
        }

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    @Override
    public void cancel(long seq) {
        if (forForward()) {
            Listener listener = getListener(seq);
            if (listener != null && listener instanceof SynchronousListener) {
                SynchronousListener synchronous = (SynchronousListener)listener;
                String peerName = synchronous.getPeer();
                if (peerName != null) {
                    s_logger.debug(log(seq, "Forwarding to peer to cancel due to timeout"));

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    protected synchronized void cancel(final long seq) {
        if (s_logger.isDebugEnabled()) {
            s_logger.debug(log(seq, "Cancelling."));
        }
        final Listener listener = _waitForList.remove(seq);
        if (listener != null) {
            listener.processDisconnect(_id, Status.Disconnected);
        }
        int index = findRequest(seq);
        if (index >= 0) {
            _requests.remove(index);
        }

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        } else {
            final Set<Map.Entry<Long, Listener>> entries = _waitForList.entrySet();
            final Iterator<Map.Entry<Long, Listener>> it = entries.iterator();
            while (it.hasNext()) {
                final Map.Entry<Long, Listener> entry = it.next();
                final Listener monitor = entry.getValue();
                if (!monitor.isRecurring()) {
                    //TODO - remove this debug statement later
                    s_logger.debug("Listener is " + entry.getValue() + " waiting on " + entry.getKey());
                    nonRecurringListenersList.add(monitor);
                }
            }

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Related Classes of com.cloud.agent.Listener

com.cloud.agent.manager.AgentAttache

com.cloud.agent.manager.AgentAttache$Alarm

com.cloud.agent.manager.ClusteredAgentAttache

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