| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.client; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.AMQException; |
| import org.apache.qpid.AMQTimeoutException; |
| import org.apache.qpid.client.failover.FailoverException; |
| import org.apache.qpid.client.failover.FailoverProtectedOperation; |
| import org.apache.qpid.client.failover.FailoverRetrySupport; |
| import org.apache.qpid.client.protocol.AMQProtocolSession; |
| import org.apache.qpid.client.state.AMQState; |
| import org.apache.qpid.client.state.AMQStateManager; |
| import org.apache.qpid.client.state.StateWaiter; |
| import org.apache.qpid.common.ServerPropertyNames; |
| import org.apache.qpid.framing.BasicQosBody; |
| import org.apache.qpid.framing.BasicQosOkBody; |
| import org.apache.qpid.framing.ChannelOpenBody; |
| import org.apache.qpid.framing.ChannelOpenOkBody; |
| import org.apache.qpid.framing.ProtocolVersion; |
| import org.apache.qpid.framing.TxSelectBody; |
| import org.apache.qpid.framing.TxSelectOkBody; |
| import org.apache.qpid.jms.BrokerDetails; |
| import org.apache.qpid.jms.ChannelLimitReachedException; |
| import org.apache.qpid.ssl.SSLContextFactory; |
| import org.apache.qpid.transport.ConnectionSettings; |
| import org.apache.qpid.transport.network.NetworkConnection; |
| import org.apache.qpid.transport.network.OutgoingNetworkTransport; |
| import org.apache.qpid.transport.network.Transport; |
| import org.apache.qpid.transport.network.security.SecurityLayer; |
| import org.apache.qpid.transport.network.security.SecurityLayerFactory; |
| |
| import javax.jms.JMSException; |
| import javax.jms.XASession; |
| import javax.net.ssl.SSLContext; |
| import java.io.IOException; |
| import java.net.ConnectException; |
| import java.nio.channels.UnresolvedAddressException; |
| import java.security.GeneralSecurityException; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.EnumSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| public class AMQConnectionDelegate_8_0 implements AMQConnectionDelegate |
| { |
| private static final Logger _logger = LoggerFactory.getLogger(AMQConnectionDelegate_8_0.class); |
| private final AMQConnection _conn; |
| |
| |
| public void closeConnection(long timeout) throws JMSException, AMQException |
| { |
| _conn.getProtocolHandler().closeConnection(timeout); |
| } |
| |
| public AMQConnectionDelegate_8_0(AMQConnection conn) |
| { |
| _conn = conn; |
| } |
| |
| protected boolean checkException(Throwable thrown) |
| { |
| Throwable cause = thrown.getCause(); |
| |
| if (cause == null) |
| { |
| cause = thrown; |
| } |
| |
| return ((cause instanceof ConnectException) || (cause instanceof UnresolvedAddressException)); |
| } |
| |
| public ProtocolVersion makeBrokerConnection(BrokerDetails brokerDetail) throws AMQException, IOException |
| { |
| final Set<AMQState> openOrClosedStates = |
| EnumSet.of(AMQState.CONNECTION_OPEN, AMQState.CONNECTION_CLOSED); |
| |
| |
| StateWaiter waiter = _conn.getProtocolHandler().createWaiter(openOrClosedStates); |
| |
| ConnectionSettings settings = brokerDetail.buildConnectionSettings(); |
| settings.setProtocol(brokerDetail.getTransport()); |
| |
| SSLContext sslContext = null; |
| if (settings.isUseSSL()) |
| { |
| try |
| { |
| sslContext = SSLContextFactory.buildClientContext( |
| settings.getTrustStorePath(), |
| settings.getTrustStorePassword(), |
| settings.getTrustManagerFactoryAlgorithm(), |
| settings.getKeyStorePath(), |
| settings.getKeyStorePassword(), |
| settings.getKeyManagerFactoryAlgorithm(), |
| settings.getCertAlias()); |
| } |
| catch (GeneralSecurityException e) |
| { |
| throw new AMQException("Unable to create SSLContext: " + e.getMessage(), e); |
| } |
| } |
| |
| SecurityLayer securityLayer = SecurityLayerFactory.newInstance(settings); |
| |
| OutgoingNetworkTransport transport = Transport.getOutgoingTransportInstance(getProtocolVersion()); |
| NetworkConnection network = transport.connect(settings, securityLayer.receiver(_conn.getProtocolHandler()), sslContext); |
| _conn.getProtocolHandler().setNetworkConnection(network, securityLayer.sender(network.getSender())); |
| _conn.getProtocolHandler().getProtocolSession().init(); |
| // this blocks until the connection has been set up or when an error |
| // has prevented the connection being set up |
| |
| AMQState state = waiter.await(); |
| |
| if(state == AMQState.CONNECTION_OPEN) |
| { |
| _conn.getFailoverPolicy().attainedConnection(); |
| _conn.setConnected(true); |
| return null; |
| } |
| else |
| { |
| return _conn.getProtocolHandler().getSuggestedProtocolVersion(); |
| } |
| |
| } |
| |
| public org.apache.qpid.jms.Session createSession(final boolean transacted, final int acknowledgeMode, final int prefetch) |
| throws JMSException |
| { |
| return createSession(transacted, acknowledgeMode, prefetch, prefetch); |
| } |
| |
| |
| public XASession createXASession(int prefetchHigh, int prefetchLow) throws JMSException |
| { |
| throw new UnsupportedOperationException("0_8 version does not provide XA support"); |
| } |
| |
| public XASession createXASession(int ackMode) throws JMSException |
| { |
| throw new UnsupportedOperationException("0_8 version does not provide XA support"); |
| } |
| public org.apache.qpid.jms.Session createSession(final boolean transacted, final int acknowledgeMode, |
| final int prefetchHigh, final int prefetchLow) throws JMSException |
| { |
| _conn.checkNotClosed(); |
| |
| if (_conn.channelLimitReached()) |
| { |
| throw new ChannelLimitReachedException(_conn.getMaximumChannelCount()); |
| } |
| |
| return new FailoverRetrySupport<org.apache.qpid.jms.Session, JMSException>( |
| new FailoverProtectedOperation<org.apache.qpid.jms.Session, JMSException>() |
| { |
| public org.apache.qpid.jms.Session execute() throws JMSException, FailoverException |
| { |
| int channelId = _conn.getNextChannelID(); |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Write channel open frame for channel id " + channelId); |
| } |
| |
| // We must create the session and register it before actually sending the frame to the server to |
| // open it, so that there is no window where we could receive data on the channel and not be set |
| // up to handle it appropriately. |
| AMQSession session = |
| new AMQSession_0_8(_conn, channelId, transacted, acknowledgeMode, prefetchHigh, |
| prefetchLow); |
| _conn.registerSession(channelId, session); |
| |
| boolean success = false; |
| try |
| { |
| createChannelOverWire(channelId, prefetchHigh, prefetchLow, transacted); |
| success = true; |
| } |
| catch (AMQException e) |
| { |
| JMSException jmse = new JMSException("Error creating session: " + e); |
| jmse.setLinkedException(e); |
| jmse.initCause(e); |
| throw jmse; |
| } |
| finally |
| { |
| if (!success) |
| { |
| _conn.deregisterSession(channelId); |
| } |
| } |
| |
| if (_conn.started()) |
| { |
| try |
| { |
| session.start(); |
| } |
| catch (AMQException e) |
| { |
| throw new JMSAMQException(e); |
| } |
| } |
| |
| return session; |
| } |
| }, _conn).execute(); |
| } |
| |
| /** |
| * Create an XASession with default prefetch values of: |
| * High = MaxPrefetch |
| * Low = MaxPrefetch / 2 |
| * @return XASession |
| * @throws JMSException thrown if there is a problem creating the session. |
| */ |
| public XASession createXASession() throws JMSException |
| { |
| return createXASession((int) _conn.getMaxPrefetch(), (int) _conn.getMaxPrefetch() / 2); |
| } |
| |
| private void createChannelOverWire(int channelId, int prefetchHigh, int prefetchLow, boolean transacted) |
| throws AMQException, FailoverException |
| { |
| ChannelOpenBody channelOpenBody = _conn.getProtocolHandler().getMethodRegistry().createChannelOpenBody(null); |
| // TODO: Be aware of possible changes to parameter order as versions change. |
| _conn.getProtocolHandler().syncWrite(channelOpenBody.generateFrame(channelId), ChannelOpenOkBody.class); |
| |
| // todo send low water mark when protocol allows. |
| // todo Be aware of possible changes to parameter order as versions change. |
| BasicQosBody basicQosBody = _conn.getProtocolHandler().getMethodRegistry().createBasicQosBody(0,prefetchHigh,false); |
| _conn.getProtocolHandler().syncWrite(basicQosBody.generateFrame(channelId),BasicQosOkBody.class); |
| |
| if (transacted) |
| { |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Issuing TxSelect for " + channelId); |
| } |
| TxSelectBody body = _conn.getProtocolHandler().getMethodRegistry().createTxSelectBody(); |
| |
| // TODO: Be aware of possible changes to parameter order as versions change. |
| _conn.getProtocolHandler().syncWrite(body.generateFrame(channelId), TxSelectOkBody.class); |
| } |
| } |
| |
| public void failoverPrep() |
| { |
| // do nothing |
| } |
| |
| /** |
| * For all sessions, and for all consumers in those sessions, resubscribe. This is called during failover handling. |
| * The caller must hold the failover mutex before calling this method. |
| */ |
| public void resubscribeSessions() throws JMSException, AMQException, FailoverException |
| { |
| ArrayList sessions = new ArrayList(_conn.getSessions().values()); |
| _logger.info(MessageFormat.format("Resubscribing sessions = {0} sessions.size={1}", sessions, sessions.size())); // FIXME: removeKey? |
| for (Iterator it = sessions.iterator(); it.hasNext();) |
| { |
| AMQSession s = (AMQSession) it.next(); |
| reopenChannel(s.getChannelId(), s.getDefaultPrefetchHigh(), s.getDefaultPrefetchLow(), s.isTransacted()); |
| s.resubscribe(); |
| } |
| } |
| |
| private void reopenChannel(int channelId, int prefetchHigh, int prefetchLow, boolean transacted) |
| throws AMQException, FailoverException |
| { |
| try |
| { |
| createChannelOverWire(channelId, prefetchHigh, prefetchLow, transacted); |
| } |
| catch (AMQException e) |
| { |
| _conn.deregisterSession(channelId); |
| throw new AMQException(null, "Error reopening channel " + channelId + " after failover: " + e, e); |
| } |
| } |
| |
| public <T, E extends Exception> T executeRetrySupport(FailoverProtectedOperation<T,E> operation) throws E |
| { |
| while (true) |
| { |
| try |
| { |
| _conn.blockUntilNotFailingOver(); |
| } |
| catch (InterruptedException e) |
| { |
| _logger.debug("Interrupted: " + e, e); |
| |
| return null; |
| } |
| |
| synchronized (_conn.getFailoverMutex()) |
| { |
| try |
| { |
| return operation.execute(); |
| } |
| catch (FailoverException e) |
| { |
| _logger.debug("Failover exception caught during operation: " + e, e); |
| } |
| catch (IllegalStateException e) |
| { |
| if (!(e.getMessage().startsWith("Fail-over interupted no-op failover support"))) |
| { |
| throw e; |
| } |
| } |
| } |
| } |
| } |
| |
| public int getMaxChannelID() |
| { |
| ConnectionTuneParameters params = _conn.getProtocolHandler().getProtocolSession().getConnectionTuneParameters(); |
| |
| return params == null ? AMQProtocolSession.MAX_CHANNEL_MAX : params.getChannelMax(); |
| } |
| |
| public int getMinChannelID() |
| { |
| return AMQProtocolSession.MIN_USABLE_CHANNEL_NUM; |
| } |
| |
| public ProtocolVersion getProtocolVersion() |
| { |
| return ProtocolVersion.v8_0; |
| } |
| |
| public boolean verifyClientID() throws JMSException |
| { |
| return true; |
| } |
| |
| /* |
| * @see org.apache.qpid.client.AMQConnectionDelegate#isSupportedServerFeature(java.lang.String) |
| */ |
| public boolean isSupportedServerFeature(String featureName) |
| { |
| // The Qpid Java Broker 0-8..0-9-1 does not advertise features by the qpid.features property, so for now |
| // we just hardcode JMS selectors as supported. |
| return ServerPropertyNames.FEATURE_QPID_JMS_SELECTOR.equals(featureName); |
| } |
| } |
