public synchronized ProtocolOutputConverter newInstance(AMQProtocolSession session) {
if (_methodRegistry == null) {
_methodRegistry = MethodRegistry.getMethodRegistry(_protocolVersion);
}
return new ProtocolOutputConverterImpl(session, _methodRegistry);
}
public void methodReceived(AMQStateManager stateManager, ExchangeDeclareBody body, int channelId)
throws AMQException {
AMQProtocolSession session = stateManager.getProtocolSession();
VirtualHost virtualHost = session.getVirtualHost();
ExchangeRegistry exchangeRegistry = virtualHost.getExchangeRegistry();
ExchangeFactory exchangeFactory = virtualHost.getExchangeFactory();
final AMQChannel channel = session.getChannel(channelId);
if (channel == null) {
throw body.getChannelNotFoundException(channelId);
}
final AMQShortString exchangeName = body.getExchange();
if (_logger.isDebugEnabled()) {
_logger.debug(
"Request to declare exchange of type " + body.getType() + " with name " + exchangeName);
}
synchronized (exchangeRegistry) {
Exchange exchange = exchangeRegistry.getExchange(exchangeName);
if (exchange == null) {
if (body.getPassive() && ((body.getType() == null) || body.getType().length() == 0)) {
throw body.getChannelException(
AMQConstant.NOT_FOUND, "Unknown exchange: " + exchangeName);
} else if (exchangeName.startsWith("amq.")) {
throw body.getConnectionException(
AMQConstant.NOT_ALLOWED,
"Attempt to declare exchange: "
+ exchangeName
+ " which begins with reserved prefix 'amq.'.");
} else if (exchangeName.startsWith("qpid.")) {
throw body.getConnectionException(
AMQConstant.NOT_ALLOWED,
"Attempt to declare exchange: "
+ exchangeName
+ " which begins with reserved prefix 'qpid.'.");
} else {
try {
exchange =
exchangeFactory.createExchange(
exchangeName == null ? null : exchangeName.intern(),
body.getType() == null ? null : body.getType().intern(),
body.getDurable(),
body.getAutoDelete(),
body.getTicket());
exchangeRegistry.registerExchange(exchange);
if (exchange.isDurable()) {
virtualHost.getMessageStore().createExchange(exchange);
}
} catch (AMQUnknownExchangeType e) {
throw body.getConnectionException(
AMQConstant.COMMAND_INVALID, "Unknown exchange: " + exchangeName, e);
}
}
} else if (!exchange.getTypeShortString().equals(body.getType())
&& !((body.getType() == null || body.getType().length() == 0) && body.getPassive())) {
throw new AMQConnectionException(
AMQConstant.NOT_ALLOWED,
"Attempt to redeclare exchange: "
+ exchangeName
+ " of type "
+ exchange.getTypeShortString()
+ " to "
+ body.getType()
+ ".",
body.getClazz(),
body.getMethod(),
body.getMajor(),
body.getMinor(),
null);
}
}
if (!body.getNowait()) {
MethodRegistry methodRegistry = session.getMethodRegistry();
AMQMethodBody responseBody = methodRegistry.createExchangeDeclareOkBody();
channel.sync();
session.writeFrame(responseBody.generateFrame(channelId));
}
}