diff options
Diffstat (limited to 'cpp/src/qpid/replication/ReplicationExchange.cpp')
| -rw-r--r-- | cpp/src/qpid/replication/ReplicationExchange.cpp | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/cpp/src/qpid/replication/ReplicationExchange.cpp b/cpp/src/qpid/replication/ReplicationExchange.cpp deleted file mode 100644 index 4b6d25ac7d..0000000000 --- a/cpp/src/qpid/replication/ReplicationExchange.cpp +++ /dev/null @@ -1,234 +0,0 @@ -/* - * - * 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/replication/ReplicationExchange.h" -#include "qpid/replication/constants.h" -#include "qpid/Plugin.h" -#include "qpid/broker/Broker.h" -#include "qpid/broker/Queue.h" -#include "qpid/broker/QueueRegistry.h" -#include "qpid/broker/ExchangeRegistry.h" -#include "qpid/framing/reply_exceptions.h" -#include "qpid/log/Statement.h" -#include <boost/bind.hpp> - -namespace qpid { -namespace replication { - -using namespace qpid::broker; -using namespace qpid::framing; -using namespace qpid::replication::constants; - -const std::string SEQUENCE_VALUE("qpid.replication-event.sequence"); -ReplicationExchange::ReplicationExchange(const std::string& name, bool durable, - const FieldTable& _args, - QueueRegistry& qr, - Manageable* parent, Broker* broker) - : Exchange(name, durable, _args, parent, broker), queues(qr), sequence(args.getAsInt64(SEQUENCE_VALUE)), init(false) -{ - args.setInt64(SEQUENCE_VALUE, sequence); - if (mgmtExchange != 0) - mgmtExchange->set_type(typeName); -} - -std::string ReplicationExchange::getType() const { return typeName; } - -void ReplicationExchange::route(Deliverable& msg, const std::string& /*routingKey*/, const FieldTable* args) -{ - if (mgmtExchange != 0) { - mgmtExchange->inc_msgReceives(); - mgmtExchange->inc_byteReceives(msg.contentSize()); - } - if (args) { - int eventType = args->getAsInt(REPLICATION_EVENT_TYPE); - if (eventType) { - if (isDuplicate(args)) return; - switch (eventType) { - case ENQUEUE: - handleEnqueueEvent(args, msg); - return; - case DEQUEUE: - handleDequeueEvent(args, msg); - return; - default: - throw IllegalArgumentException(QPID_MSG("Illegal value for " << REPLICATION_EVENT_TYPE << ": " << eventType)); - } - } - } else { - QPID_LOG(warning, "Dropping unexpected message with no headers"); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgDrops(); - mgmtExchange->inc_byteDrops(msg.contentSize()); - } - } -} - -void ReplicationExchange::handleEnqueueEvent(const FieldTable* args, Deliverable& msg) -{ - std::string queueName = args->getAsString(REPLICATION_TARGET_QUEUE); - Queue::shared_ptr queue = queues.find(queueName); - if (queue) { - - SequenceNumber seqno1(args->getAsInt(QUEUE_MESSAGE_POSITION)); - - // note that queue will ++ before enqueue. - if (queue->getPosition() > --seqno1) // test queue.pos < seqnumber - { - QPID_LOG(error, "Cannot enqueue replicated message. Destination Queue " << queueName << " ahead of source queue"); - mgmtExchange->inc_msgDrops(); - mgmtExchange->inc_byteDrops(msg.contentSize()); - } else { - queue->setPosition(seqno1); - - FieldTable& headers = msg.getMessage().getProperties<MessageProperties>()->getApplicationHeaders(); - headers.erase(REPLICATION_TARGET_QUEUE); - headers.erase(REPLICATION_EVENT_SEQNO); - headers.erase(REPLICATION_EVENT_TYPE); - headers.erase(QUEUE_MESSAGE_POSITION); - msg.deliverTo(queue); - QPID_LOG(debug, "Enqueued replicated message onto " << queueName); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgRoutes(); - mgmtExchange->inc_byteRoutes( msg.contentSize()); - } - } - } else { - QPID_LOG(error, "Cannot enqueue replicated message. Queue " << queueName << " does not exist"); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgDrops(); - mgmtExchange->inc_byteDrops(msg.contentSize()); - } - } -} - -void ReplicationExchange::handleDequeueEvent(const FieldTable* args, Deliverable& msg) -{ - std::string queueName = args->getAsString(REPLICATION_TARGET_QUEUE); - Queue::shared_ptr queue = queues.find(queueName); - if (queue) { - SequenceNumber position(args->getAsInt(DEQUEUED_MESSAGE_POSITION)); - QueuedMessage dequeued; - if (queue->acquireMessageAt(position, dequeued)) { - queue->dequeue(0, dequeued); - QPID_LOG(debug, "Processed replicated 'dequeue' event from " << queueName << " at position " << position); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgRoutes(); - mgmtExchange->inc_byteRoutes(msg.contentSize()); - } - } else { - QPID_LOG(warning, "Could not acquire message " << position << " from " << queueName); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgDrops(); - mgmtExchange->inc_byteDrops(msg.contentSize()); - } - } - } else { - QPID_LOG(error, "Cannot process replicated 'dequeue' event. Queue " << queueName << " does not exist"); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgDrops(); - mgmtExchange->inc_byteDrops(msg.contentSize()); - } - } -} - -bool ReplicationExchange::isDuplicate(const FieldTable* args) -{ - if (!args->get(REPLICATION_EVENT_SEQNO)) return false; - SequenceNumber seqno(args->getAsInt(REPLICATION_EVENT_SEQNO)); - if (!init) { - init = true; - sequence = seqno; - return false; - } else if (seqno > sequence) { - if (seqno - sequence > 1) { - QPID_LOG(error, "Gap in replication event sequence between: " << sequence << " and " << seqno); - } - sequence = seqno; - return false; - } else { - QPID_LOG(info, "Duplicate detected: seqno=" << seqno << " (last seqno=" << sequence << ")"); - return true; - } -} - -bool ReplicationExchange::bind(Queue::shared_ptr /*queue*/, const std::string& /*routingKey*/, const FieldTable* /*args*/) -{ - throw NotImplementedException("Replication exchange does not support bind operation"); -} - -bool ReplicationExchange::unbind(Queue::shared_ptr /*queue*/, const std::string& /*routingKey*/, const FieldTable* /*args*/) -{ - throw NotImplementedException("Replication exchange does not support unbind operation"); -} - -bool ReplicationExchange::isBound(Queue::shared_ptr /*queue*/, const string* const /*routingKey*/, const FieldTable* const /*args*/) -{ - return false; -} - -const std::string ReplicationExchange::typeName("replication"); - - -void ReplicationExchange::encode(Buffer& buffer) const -{ - args.setInt64(std::string(SEQUENCE_VALUE), sequence); - Exchange::encode(buffer); -} - - -struct ReplicationExchangePlugin : Plugin -{ - Broker* broker; - - ReplicationExchangePlugin(); - void earlyInitialize(Plugin::Target& target); - void initialize(Plugin::Target& target); - Exchange::shared_ptr create(const std::string& name, bool durable, - const framing::FieldTable& args, - management::Manageable* parent, - qpid::broker::Broker* broker); -}; - -ReplicationExchangePlugin::ReplicationExchangePlugin() : broker(0) {} - -Exchange::shared_ptr ReplicationExchangePlugin::create(const std::string& name, bool durable, - const framing::FieldTable& args, - management::Manageable* parent, qpid::broker::Broker* broker) -{ - Exchange::shared_ptr e(new ReplicationExchange(name, durable, args, broker->getQueues(), parent, broker)); - return e; -} - - -void ReplicationExchangePlugin::earlyInitialize(Plugin::Target& target) -{ - broker = dynamic_cast<broker::Broker*>(&target); - if (broker) { - ExchangeRegistry::FactoryFunction f = boost::bind(&ReplicationExchangePlugin::create, this, _1, _2, _3, _4, _5); - broker->getExchanges().registerType(ReplicationExchange::typeName, f); - QPID_LOG(info, "Registered replication exchange"); - } -} - -void ReplicationExchangePlugin::initialize(Target&) {} - -static ReplicationExchangePlugin exchangePlugin; - -}} // namespace qpid::replication |