diff options
Diffstat (limited to 'qpid/cpp/src/qpid/broker/Connection.cpp')
| -rw-r--r-- | qpid/cpp/src/qpid/broker/Connection.cpp | 487 |
1 files changed, 487 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/broker/Connection.cpp b/qpid/cpp/src/qpid/broker/Connection.cpp new file mode 100644 index 0000000000..c07e63e68c --- /dev/null +++ b/qpid/cpp/src/qpid/broker/Connection.cpp @@ -0,0 +1,487 @@ +/* + * + * 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. + * + */ +#include "qpid/broker/Connection.h" +#include "qpid/broker/SessionOutputException.h" +#include "qpid/broker/SessionState.h" +#include "qpid/broker/Bridge.h" +#include "qpid/broker/Broker.h" +#include "qpid/broker/Queue.h" +#include "qpid/sys/SecuritySettings.h" +#include "qpid/sys/ClusterSafe.h" + +#include "qpid/log/Statement.h" +#include "qpid/ptr_map.h" +#include "qpid/framing/AMQP_ClientProxy.h" +#include "qpid/framing/enum.h" +#include "qpid/framing/MessageTransferBody.h" +#include "qmf/org/apache/qpid/broker/EventClientConnect.h" +#include "qmf/org/apache/qpid/broker/EventClientDisconnect.h" + +#include <boost/bind.hpp> +#include <boost/ptr_container/ptr_vector.hpp> + +#include <algorithm> +#include <iostream> +#include <assert.h> + + + +using namespace qpid::sys; +using namespace qpid::framing; +using qpid::ptr_map_ptr; +using qpid::management::ManagementAgent; +using qpid::management::ManagementObject; +using qpid::management::Manageable; +using qpid::management::Args; +namespace _qmf = qmf::org::apache::qpid::broker; + +namespace qpid { +namespace broker { + +struct ConnectionTimeoutTask : public sys::TimerTask { + sys::Timer& timer; + Connection& connection; + + ConnectionTimeoutTask(uint16_t hb, sys::Timer& t, Connection& c) : + TimerTask(Duration(hb*2*TIME_SEC),"ConnectionTimeout"), + timer(t), + connection(c) + {} + + void touch() { + restart(); + } + + void fire() { + // If we get here then we've not received any traffic in the timeout period + // Schedule closing the connection for the io thread + QPID_LOG(error, "Connection " << connection.getMgmtId() + << " timed out: closing"); + connection.abort(); + } +}; + +Connection::Connection(ConnectionOutputHandler* out_, + Broker& broker_, const + std::string& mgmtId_, + const qpid::sys::SecuritySettings& external, + bool isLink_, + uint64_t objectId_, + bool shadow_, + bool delayManagement) : + ConnectionState(out_, broker_), + securitySettings(external), + adapter(*this, isLink_, shadow_), + isLink(isLink_), + mgmtClosing(false), + mgmtId(mgmtId_), + mgmtObject(0), + links(broker_.getLinks()), + agent(0), + timer(broker_.getTimer()), + errorListener(0), + objectId(objectId_), + shadow(shadow_), + outboundTracker(*this) +{ + outboundTracker.wrap(out); + if (isLink) + links.notifyConnection(mgmtId, this); + // In a cluster, allow adding the management object to be delayed. + if (!delayManagement) addManagementObject(); + if (!isShadow()) broker.getConnectionCounter().inc_connectionCount(); +} + +void Connection::addManagementObject() { + assert(agent == 0); + assert(mgmtObject == 0); + Manageable* parent = broker.GetVhostObject(); + if (parent != 0) { + agent = broker.getManagementAgent(); + if (agent != 0) { + // TODO set last bool true if system connection + mgmtObject = new _qmf::Connection(agent, this, parent, mgmtId, !isLink, false); + mgmtObject->set_shadow(shadow); + agent->addObject(mgmtObject, objectId); + } + ConnectionState::setUrl(mgmtId); + } +} + +void Connection::requestIOProcessing(boost::function0<void> callback) +{ + ScopedLock<Mutex> l(ioCallbackLock); + ioCallbacks.push(callback); + out.activateOutput(); +} + +Connection::~Connection() +{ + if (mgmtObject != 0) { + mgmtObject->resourceDestroy(); + // In a cluster, Connections destroyed during shutdown are in + // a cluster-unsafe context. Don't raise an event in that case. + if (!isLink && isClusterSafe()) + agent->raiseEvent(_qmf::EventClientDisconnect(mgmtId, ConnectionState::getUserId())); + } + if (isLink) + links.notifyClosed(mgmtId); + + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + + if (!isShadow()) broker.getConnectionCounter().dec_connectionCount(); +} + +void Connection::received(framing::AMQFrame& frame) { + // Received frame on connection so delay timeout + restartTimeout(); + + if (frame.getChannel() == 0 && frame.getMethod()) { + adapter.handle(frame); + } else { + if (adapter.isOpen()) + getChannel(frame.getChannel()).in(frame); + else + close(connection::CLOSE_CODE_FRAMING_ERROR, "Connection not yet open, invalid frame received."); + } + + if (isLink) //i.e. we are acting as the client to another broker + recordFromServer(frame); + else + recordFromClient(frame); +} + +void Connection::sent(const framing::AMQFrame& frame) +{ + if (isLink) //i.e. we are acting as the client to another broker + recordFromClient(frame); + else + recordFromServer(frame); +} + +bool isMessage(const AMQMethodBody* method) +{ + return method && method->isA<qpid::framing::MessageTransferBody>(); +} + +void Connection::recordFromServer(const framing::AMQFrame& frame) +{ + // Don't record management stats in cluster-unsafe contexts + if (mgmtObject != 0 && isClusterSafe()) + { + mgmtObject->inc_framesToClient(); + mgmtObject->inc_bytesToClient(frame.encodedSize()); + if (isMessage(frame.getMethod())) { + mgmtObject->inc_msgsToClient(); + } + } +} + +void Connection::recordFromClient(const framing::AMQFrame& frame) +{ + // Don't record management stats in cluster-unsafe contexts + if (mgmtObject != 0 && isClusterSafe()) + { + mgmtObject->inc_framesFromClient(); + mgmtObject->inc_bytesFromClient(frame.encodedSize()); + if (isMessage(frame.getMethod())) { + mgmtObject->inc_msgsFromClient(); + } + } +} + +string Connection::getAuthMechanism() +{ + if (!isLink) + return string("ANONYMOUS"); + + return links.getAuthMechanism(mgmtId); +} + +string Connection::getUsername ( ) +{ + if (!isLink) + return string("anonymous"); + + return links.getUsername(mgmtId); +} + +string Connection::getPassword ( ) +{ + if (!isLink) + return string(""); + + return links.getPassword(mgmtId); +} + +string Connection::getHost ( ) +{ + if (!isLink) + return string(""); + + return links.getHost(mgmtId); +} + +uint16_t Connection::getPort ( ) +{ + if (!isLink) + return 0; + + return links.getPort(mgmtId); +} + +string Connection::getAuthCredentials() +{ + if (!isLink) + return string(); + + if (mgmtObject != 0) + { + if (links.getAuthMechanism(mgmtId) == "ANONYMOUS") + mgmtObject->set_authIdentity("anonymous"); + else + mgmtObject->set_authIdentity(links.getAuthIdentity(mgmtId)); + } + + return links.getAuthCredentials(mgmtId); +} + +void Connection::notifyConnectionForced(const string& text) +{ + if (isLink) + links.notifyConnectionForced(mgmtId, text); +} + +void Connection::setUserId(const string& userId) +{ + ConnectionState::setUserId(userId); + // In a cluster, the cluster code will raise the connect event + // when the connection is replicated to the cluster. + if (!broker.isInCluster()) raiseConnectEvent(); +} + +void Connection::raiseConnectEvent() { + if (mgmtObject != 0) { + mgmtObject->set_authIdentity(userId); + agent->raiseEvent(_qmf::EventClientConnect(mgmtId, userId)); + } +} + +void Connection::setFederationLink(bool b) +{ + ConnectionState::setFederationLink(b); + if (mgmtObject != 0) + mgmtObject->set_federationLink(b); +} + +void Connection::close(connection::CloseCode code, const string& text) +{ + QPID_LOG_IF(error, code != connection::CLOSE_CODE_NORMAL, "Connection " << mgmtId << " closed by error: " << text << "(" << code << ")"); + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + adapter.close(code, text); + //make sure we delete dangling pointers from outputTasks before deleting sessions + outputTasks.removeAll(); + channels.clear(); + getOutput().close(); +} + +// Send a close to the client but keep the channels. Used by cluster. +void Connection::sendClose() { + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + adapter.close(connection::CLOSE_CODE_NORMAL, "OK"); + getOutput().close(); +} + +void Connection::idleOut(){} + +void Connection::idleIn(){} + +void Connection::closed(){ // Physically closed, suspend open sessions. + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + try { + while (!channels.empty()) + ptr_map_ptr(channels.begin())->handleDetach(); + } catch(std::exception& e) { + QPID_LOG(error, QPID_MSG("While closing connection: " << e.what())); + assert(0); + } +} + +void Connection::doIoCallbacks() { + { + ScopedLock<Mutex> l(ioCallbackLock); + // Although IO callbacks execute in the connection thread context, they are + // not cluster safe because they are queued for execution in non-IO threads. + ClusterUnsafeScope cus; + while (!ioCallbacks.empty()) { + boost::function0<void> cb = ioCallbacks.front(); + ioCallbacks.pop(); + ScopedUnlock<Mutex> ul(ioCallbackLock); + cb(); // Lend the IO thread for management processing + } + } +} + +bool Connection::doOutput() { + try { + doIoCallbacks(); + if (mgmtClosing) { + closed(); + close(connection::CLOSE_CODE_CONNECTION_FORCED, "Closed by Management Request"); + } else { + //then do other output as needed: + return outputTasks.doOutput(); + } + }catch(const SessionOutputException& e){ + getChannel(e.channel).handleException(e); + return true; + }catch(ConnectionException& e){ + close(e.code, e.getMessage()); + }catch(std::exception& e){ + close(connection::CLOSE_CODE_CONNECTION_FORCED, e.what()); + } + return false; +} + +void Connection::sendHeartbeat() { + adapter.heartbeat(); +} + +void Connection::closeChannel(uint16_t id) { + ChannelMap::iterator i = channels.find(id); + if (i != channels.end()) channels.erase(i); +} + +SessionHandler& Connection::getChannel(ChannelId id) { + ChannelMap::iterator i=channels.find(id); + if (i == channels.end()) { + i = channels.insert(id, new SessionHandler(*this, id)).first; + } + return *ptr_map_ptr(i); +} + +ManagementObject* Connection::GetManagementObject(void) const +{ + return (ManagementObject*) mgmtObject; +} + +Manageable::status_t Connection::ManagementMethod(uint32_t methodId, Args&, string&) +{ + Manageable::status_t status = Manageable::STATUS_UNKNOWN_METHOD; + + QPID_LOG(debug, "Connection::ManagementMethod [id=" << methodId << "]"); + + switch (methodId) + { + case _qmf::Connection::METHOD_CLOSE : + mgmtClosing = true; + if (mgmtObject != 0) mgmtObject->set_closing(1); + out.activateOutput(); + status = Manageable::STATUS_OK; + break; + } + + return status; +} + +void Connection::setSecureConnection(SecureConnection* s) +{ + adapter.setSecureConnection(s); +} + +struct ConnectionHeartbeatTask : public sys::TimerTask { + sys::Timer& timer; + Connection& connection; + ConnectionHeartbeatTask(uint16_t hb, sys::Timer& t, Connection& c) : + TimerTask(Duration(hb*TIME_SEC), "ConnectionHeartbeat"), + timer(t), + connection(c) + {} + + void fire() { + // Setup next firing + setupNextFire(); + timer.add(this); + + // Send Heartbeat + connection.sendHeartbeat(); + } +}; + +void Connection::abort() +{ + // Make sure that we don't try to send a heartbeat as we're + // aborting the connection + if (heartbeatTimer) + heartbeatTimer->cancel(); + + out.abort(); +} + +void Connection::setHeartbeatInterval(uint16_t heartbeat) +{ + setHeartbeat(heartbeat); + if (heartbeat > 0 && !isShadow()) { + heartbeatTimer = new ConnectionHeartbeatTask(heartbeat, timer, *this); + timer.add(heartbeatTimer); + timeoutTimer = new ConnectionTimeoutTask(heartbeat, timer, *this); + timer.add(timeoutTimer); + } +} + +void Connection::restartTimeout() +{ + if (timeoutTimer) + timeoutTimer->touch(); +} + +bool Connection::isOpen() { return adapter.isOpen(); } + +Connection::OutboundFrameTracker::OutboundFrameTracker(Connection& _con) : con(_con), next(0) {} +void Connection::OutboundFrameTracker::close() { next->close(); } +size_t Connection::OutboundFrameTracker::getBuffered() const { return next->getBuffered(); } +void Connection::OutboundFrameTracker::abort() { next->abort(); } +void Connection::OutboundFrameTracker::activateOutput() { next->activateOutput(); } +void Connection::OutboundFrameTracker::giveReadCredit(int32_t credit) { next->giveReadCredit(credit); } +void Connection::OutboundFrameTracker::send(framing::AMQFrame& f) +{ + next->send(f); + con.sent(f); +} +void Connection::OutboundFrameTracker::wrap(sys::ConnectionOutputHandlerPtr& p) +{ + next = p.get(); + p.set(this); +} + +}} |