Examples with Listener com.cloud.agent.Listener used on opensource projects

Example 1 with Listener

use of com.cloud.agent.Listener in project cloudstack by apache.

the class AgentManagerImpl method handleControlCommand.

private AgentControlAnswer handleControlCommand(final AgentAttache attache, final AgentControlCommand cmd) {
    AgentControlAnswer answer = null;
    for (final Pair<Integer, Listener> listener : _cmdMonitors) {
        answer = listener.second().processControlCommand(attache.getId(), cmd);
        if (answer != null) {
            return answer;
        }
    }
    s_logger.warn("No handling of agent control command: " + cmd + " sent from " + attache.getId());
    return new AgentControlAnswer(cmd);
}

Example 2 with Listener

use of com.cloud.agent.Listener in project cloudstack by apache.

the class AgentAttache method processAnswers.

public boolean processAnswers(final long seq, final Response resp) {
    resp.logD("Processing: ", true);
    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);
    } finally {
        // we should always trigger next command execution, even in failure cases - otherwise in exception case all the remaining will be stuck in the sync queue forever
        if (resp.executeInSequence()) {
            sendNext(seq);
        }
    }
    return processed;
}

Example 3 with Listener

use of com.cloud.agent.Listener in project cloudstack by apache.

the class AgentAttache method cancelAllCommands.

protected void cancelAllCommands(final Status state, final boolean cancelActive) {
    if (cancelActive) {
        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);
        }
    }
}

Example 4 with Listener

use of com.cloud.agent.Listener in project cloudstack by apache.

the class AgentAttache method getNonRecurringListenersSize.

public int getNonRecurringListenersSize() {
    List<Listener> nonRecurringListenersList = new ArrayList<Listener>();
    if (_waitForList.isEmpty()) {
        return 0;
    } 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);
            }
        }
    }
    return nonRecurringListenersList.size();
}

Example 5 with Listener

use of com.cloud.agent.Listener in project cloudstack by apache.

the class AgentAttache method cancel.

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);
    }
}