diff options
Diffstat (limited to 'qpid/cpp/src/qpid/broker/amqp_0_10/Connection.cpp')
| -rw-r--r-- | qpid/cpp/src/qpid/broker/amqp_0_10/Connection.cpp | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/broker/amqp_0_10/Connection.cpp b/qpid/cpp/src/qpid/broker/amqp_0_10/Connection.cpp new file mode 100644 index 0000000000..518c2fa9d0 --- /dev/null +++ b/qpid/cpp/src/qpid/broker/amqp_0_10/Connection.cpp @@ -0,0 +1,549 @@ +/* + * + * 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/amqp_0_10/Connection.h" + +#include "qpid/broker/ConnectionObserver.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/management/ManagementAgent.h" +#include "qpid/sys/ConnectionOutputHandler.h" +#include "qpid/sys/SecuritySettings.h" +#include "qpid/sys/Timer.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 std::string; + +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 { +namespace amqp_0_10 { + +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(); + } +}; +/** + * A ConnectionOutputHandler that delegates to another + * ConnectionOutputHandler. Allows you to inspect outputting frames + */ +class FrameInspector : public sys::ConnectionOutputHandler +{ +public: + FrameInspector(ConnectionOutputHandler* p, framing::FrameHandler* i) : + next(p), + intercepter(i) + { + assert(next); + assert(intercepter); + } + + void close() { next->close(); } + void abort() { next->abort(); } + void connectionEstablished() { next->connectionEstablished(); } + void activateOutput() { next->activateOutput(); } + void handle(framing::AMQFrame& f) { intercepter->handle(f); next->handle(f); } + +private: + ConnectionOutputHandler* next; + framing::FrameHandler* intercepter; +}; + +/** + * Chained ConnectionOutputHandler that allows outgoing frames to be + * tracked (for updating mgmt stats). + */ +class OutboundFrameTracker : public framing::FrameHandler +{ +public: + OutboundFrameTracker(Connection& _con) : con(_con) {} + void handle(framing::AMQFrame& f) + { + con.sent(f); + } +private: + Connection& con; +}; + +Connection::Connection(ConnectionOutputHandler* out_, + Broker& broker_, const + std::string& mgmtId_, + const qpid::sys::SecuritySettings& external, + bool link_, + uint64_t objectId_ +) : + outboundTracker(new OutboundFrameTracker(*this)), + out(new FrameInspector(out_, outboundTracker.get())), + broker(broker_), + framemax(65535), + heartbeat(0), + heartbeatmax(120), + isDefaultRealm(false), + securitySettings(external), + link(link_), + adapter(*this, link), + mgmtClosing(false), + mgmtId(mgmtId_), + links(broker_.getLinks()), + agent(0), + timer(broker_.getTimer()), + objectId(objectId_) +{ + broker.getConnectionObservers().connection(*this); + 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 = _qmf::Connection::shared_ptr(new _qmf::Connection(agent, this, parent, mgmtId, !link, false, "AMQP 0-10")); + agent->addObject(mgmtObject, objectId); + } + } +} + +void Connection::requestIOProcessing(boost::function0<void> callback) +{ + ScopedLock<Mutex> l(ioCallbackLock); + ioCallbacks.push(callback); + if (isOpen()) out->activateOutput(); +} + +Connection::~Connection() +{ + if (mgmtObject != 0) { + mgmtObject->debugStats("destroying"); + if (!link) + agent->raiseEvent(_qmf::EventClientDisconnect(mgmtId, getUserId(), mgmtObject->get_remoteProperties())); + QPID_LOG_CAT(debug, model, "Delete connection. user:" << getUserId() + << " rhost:" << mgmtId ); + mgmtObject->resourceDestroy(); + } + broker.getConnectionObservers().closed(*this); + + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + if (linkHeartbeatTimer) { + linkHeartbeatTimer->cancel(); + } +} + +void Connection::received(framing::AMQFrame& frame) { + // Received frame on connection so delay timeout + restartTimeout(); + bool wasOpen = isOpen(); + adapter.handle(frame); + if (link) //i.e. we are acting as the client to another broker + recordFromServer(frame); + else + recordFromClient(frame); + if (!wasOpen && isOpen()) { + doIoCallbacks(); // Do any callbacks registered before we opened. + broker.getConnectionObservers().opened(*this); + } +} + +void Connection::sent(const framing::AMQFrame& frame) +{ + if (link) //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) +{ + if (mgmtObject != 0) + { + qmf::org::apache::qpid::broker::Connection::PerThreadStats *cStats = mgmtObject->getStatistics(); + cStats->framesToClient += 1; + cStats->bytesToClient += frame.encodedSize(); + if (isMessage(frame.getMethod())) { + cStats->msgsToClient += 1; + } + mgmtObject->statisticsUpdated(); + } +} + +void Connection::recordFromClient(const framing::AMQFrame& frame) +{ + if (mgmtObject != 0) + { + qmf::org::apache::qpid::broker::Connection::PerThreadStats *cStats = mgmtObject->getStatistics(); + cStats->framesFromClient += 1; + cStats->bytesFromClient += frame.encodedSize(); + if (isMessage(frame.getMethod())) { + cStats->msgsFromClient += 1; + } + mgmtObject->statisticsUpdated(); + } +} + +string Connection::getAuthMechanism() +{ + if (!link) + return string("ANONYMOUS"); + + return links.getAuthMechanism(mgmtId); +} + +string Connection::getUsername ( ) +{ + if (!link) + return string("anonymous"); + + return links.getUsername(mgmtId); +} + +string Connection::getPassword ( ) +{ + if (!link) + return string(""); + + return links.getPassword(mgmtId); +} + +string Connection::getHost ( ) +{ + if (!link) + return string(""); + + return links.getHost(mgmtId); +} + +uint16_t Connection::getPort ( ) +{ + if (!link) + return 0; + + return links.getPort(mgmtId); +} + +string Connection::getAuthCredentials() +{ + if (!link) + 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) +{ + broker.getConnectionObservers().forced(*this, text); +} + +void Connection::setUserId(const string& uid) +{ + userId = uid; + size_t at = userId.find('@'); + userName = userId.substr(0, at); + isDefaultRealm = ( + at!= std::string::npos && + getBroker().getRealm() == userId.substr(at+1,userId.size())); + raiseConnectEvent(); +} + +void Connection::raiseConnectEvent() { + if (mgmtObject != 0) { + mgmtObject->set_authIdentity(userId); + agent->raiseEvent(_qmf::EventClientConnect(mgmtId, userId, mgmtObject->get_remoteProperties())); + } + + QPID_LOG_CAT(debug, model, "Create connection. user:" << userId + << " rhost:" << mgmtId ); +} + +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(); + if (linkHeartbeatTimer) { + linkHeartbeatTimer->cancel(); + } + adapter.close(code, text); + //make sure we delete dangling pointers from outputTasks before deleting sessions + outputTasks.removeAll(); + channels.clear(); + out->close(); +} + +void Connection::activateOutput() +{ + out->activateOutput(); +} + +void Connection::addOutputTask(OutputTask* t) +{ + outputTasks.addOutputTask(t); +} + +void Connection::removeOutputTask(OutputTask* t) +{ + outputTasks.removeOutputTask(t); +} + +void Connection::closed(){ // Physically closed, suspend open sessions. + if (heartbeatTimer) + heartbeatTimer->cancel(); + if (timeoutTimer) + timeoutTimer->cancel(); + if (linkHeartbeatTimer) { + linkHeartbeatTimer->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() { + if (!isOpen()) return; // Don't process IO callbacks until we are open. + ScopedLock<Mutex> l(ioCallbackLock); + 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::shared_ptr Connection::GetManagementObject(void) const +{ + return 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(); + } +}; + +class LinkHeartbeatTask : public qpid::sys::TimerTask { + sys::Timer& timer; + Connection& connection; + bool heartbeatSeen; + + void fire() { + if (!heartbeatSeen) { + QPID_LOG(error, "Federation link connection " << connection.getMgmtId() << " missed 2 heartbeats - closing connection"); + connection.abort(); + } else { + heartbeatSeen = false; + // Setup next firing + setupNextFire(); + timer.add(this); + } + } + +public: + LinkHeartbeatTask(sys::Timer& t, qpid::sys::Duration period, Connection& c) : + TimerTask(period, "LinkHeartbeatTask"), timer(t), connection(c), heartbeatSeen(false) {} + + void heartbeatReceived() { heartbeatSeen = true; } +}; + + +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) { + if (!heartbeatTimer) { + heartbeatTimer = new ConnectionHeartbeatTask(heartbeat, timer, *this); + timer.add(heartbeatTimer); + } + if (!timeoutTimer) { + timeoutTimer = new ConnectionTimeoutTask(heartbeat, timer, *this); + timer.add(timeoutTimer); + } + } + out->connectionEstablished(); +} + +void Connection::startLinkHeartbeatTimeoutTask() { + if (!linkHeartbeatTimer && heartbeat > 0) { + linkHeartbeatTimer = new LinkHeartbeatTask(timer, 2 * heartbeat * TIME_SEC, *this); + timer.add(linkHeartbeatTimer); + } + out->connectionEstablished(); +} + +void Connection::restartTimeout() +{ + if (timeoutTimer) + timeoutTimer->touch(); + + if (linkHeartbeatTimer) { + static_cast<LinkHeartbeatTask*>(linkHeartbeatTimer.get())->heartbeatReceived(); + } +} + +bool Connection::isOpen() { return adapter.isOpen(); } + +}}} |