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/*
*
* 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/Broker.h"
#include "qpid/broker/ExchangeRegistry.h"
#include "qpid/broker/DirectExchange.h"
#include "qpid/broker/FanOutExchange.h"
#include "qpid/broker/HeadersExchange.h"
#include "qpid/broker/TopicExchange.h"
#include "qpid/broker/Link.h"
#include "qpid/management/ManagementDirectExchange.h"
#include "qpid/management/ManagementTopicExchange.h"
#include "qpid/framing/reply_exceptions.h"
#include "qmf/org/apache/qpid/broker/EventExchangeDeclare.h"
#include "qmf/org/apache/qpid/broker/EventExchangeDelete.h"
using namespace qpid::broker;
using namespace qpid::sys;
using std::pair;
using std::string;
using qpid::framing::FieldTable;
using qpid::management::ManagementAgent;
namespace _qmf = qmf::org::apache::qpid::broker;
pair<Exchange::shared_ptr, bool> ExchangeRegistry::declare(const string& name, const string& type){
return declare(name, type, false, false, FieldTable());
}
pair<Exchange::shared_ptr, bool> ExchangeRegistry::declare(
const string& name, const string& type, bool durable, bool autodelete, const FieldTable& args,
Exchange::shared_ptr alternate, const string& connectionId, const string& userId)
{
Exchange::shared_ptr exchange;
std::pair<Exchange::shared_ptr, bool> result;
{
RWlock::ScopedWlock locker(lock);
ExchangeMap::iterator i = exchanges.find(name);
if (i == exchanges.end()) {
if (type == TopicExchange::typeName){
exchange = Exchange::shared_ptr(new TopicExchange(name, durable, autodelete, args, parent, broker));
}else if(type == DirectExchange::typeName){
exchange = Exchange::shared_ptr(new DirectExchange(name, durable, autodelete, args, parent, broker));
}else if(type == FanOutExchange::typeName){
exchange = Exchange::shared_ptr(new FanOutExchange(name, durable, autodelete, args, parent, broker));
}else if (type == HeadersExchange::typeName) {
exchange = Exchange::shared_ptr(new HeadersExchange(name, durable, autodelete, args, parent, broker));
}else if (type == ManagementDirectExchange::typeName) {
exchange = Exchange::shared_ptr(new ManagementDirectExchange(name, durable, args, parent, broker));
}else if (type == ManagementTopicExchange::typeName) {
exchange = Exchange::shared_ptr(new ManagementTopicExchange(name, durable, args, parent, broker));
}else if (type == Link::exchangeTypeName) {
exchange = Link::linkExchangeFactory(name);
}else{
FunctionMap::iterator i = factory.find(type);
if (i == factory.end()) {
throw UnknownExchangeTypeException(type);
} else {
exchange = i->second(name, durable, autodelete, args, parent, broker);
}
}
exchanges[name] = exchange;
result = std::pair<Exchange::shared_ptr, bool>(exchange, true);
if (alternate) exchange->setAlternate(alternate);
// Call exchangeCreate inside the lock to ensure correct ordering.
if (broker) broker->getBrokerObservers().exchangeCreate(exchange);
} else {
result = std::pair<Exchange::shared_ptr, bool>(i->second, false);
}
if (broker && broker->getManagementAgent()) {
// Call raiseEvent inside the lock to ensure correct ordering.
broker->getManagementAgent()->raiseEvent(
_qmf::EventExchangeDeclare(
connectionId,
userId,
name,
type,
alternate ? alternate->getName() : string(),
durable,
false,
ManagementAgent::toMap(result.first->getArgs()),
result.second ? "created" : "existing"));
}
}
return result;
}
void ExchangeRegistry::destroy(
const string& name, const string& connectionId, const string& userId)
{
if (name.empty() ||
(name.find("amq.") == 0 &&
(name == "amq.direct" || name == "amq.fanout" || name == "amq.topic" || name == "amq.match")) ||
name == "qpid.management")
throw framing::NotAllowedException(QPID_MSG("Cannot delete default exchange: '" << name << "'"));
{
RWlock::ScopedWlock locker(lock);
ExchangeMap::iterator i = exchanges.find(name);
if (i != exchanges.end()) {
if (broker) {
// Call exchangeDestroy and raiseEvent inside the lock to ensure
// correct ordering.
broker->getBrokerObservers().exchangeDestroy(i->second);
if (broker->getManagementAgent())
broker->getManagementAgent()->raiseEvent(
_qmf::EventExchangeDelete(connectionId, userId, name));
}
i->second->destroy();
exchanges.erase(i);
}
}
}
Exchange::shared_ptr ExchangeRegistry::find(const string& name){
RWlock::ScopedRlock locker(lock);
ExchangeMap::iterator i = exchanges.find(name);
if (i == exchanges.end())
return Exchange::shared_ptr();
else
return i->second;
}
Exchange::shared_ptr ExchangeRegistry::get(const string& name) {
Exchange::shared_ptr ex = find(name);
if (!ex) throw framing::NotFoundException(QPID_MSG("Exchange not found: "<<name));
return ex;
}
bool ExchangeRegistry::registerExchange(const Exchange::shared_ptr& ex) {
RWlock::ScopedWlock locker(lock);
return exchanges.insert(ExchangeMap::value_type(ex->getName(), ex)).second;
}
void ExchangeRegistry::registerType(const std::string& type, FactoryFunction f)
{
factory[type] = f;
}
void ExchangeRegistry::checkType(const std::string& type)
{
if (type != TopicExchange::typeName && type != DirectExchange::typeName && type != FanOutExchange::typeName
&& type != HeadersExchange::typeName && type != ManagementDirectExchange::typeName
&& type != ManagementTopicExchange::typeName && type != Link::exchangeTypeName
&& factory.find(type) == factory.end()) {
throw UnknownExchangeTypeException(type);
}
}
namespace
{
const std::string EMPTY;
}
Exchange::shared_ptr ExchangeRegistry::getDefault()
{
return get(EMPTY);
}
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