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Diffstat (limited to 'cpp/src/qpid/broker/XmlExchange.cpp')
-rw-r--r-- | cpp/src/qpid/broker/XmlExchange.cpp | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/cpp/src/qpid/broker/XmlExchange.cpp b/cpp/src/qpid/broker/XmlExchange.cpp deleted file mode 100644 index cb0f9a9606..0000000000 --- a/cpp/src/qpid/broker/XmlExchange.cpp +++ /dev/null @@ -1,277 +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 "config.h" -#include "XmlExchange.h" - -#include "DeliverableMessage.h" - -#include "qpid/log/Statement.h" -#include "qpid/framing/FieldTable.h" -#include "qpid/framing/FieldValue.h" -#include "qpid/framing/reply_exceptions.h" - -#include <xercesc/framework/MemBufInputSource.hpp> - -#include <xqilla/context/ItemFactory.hpp> -#include <xqilla/xqilla-simple.hpp> - -#include <iostream> -#include <sstream> - -using namespace qpid::framing; -using namespace qpid::sys; -using qpid::management::Manageable; - -namespace qpid { -namespace broker { - -XmlExchange::XmlExchange(const string& _name, Manageable* _parent) : Exchange(_name, _parent) -{ - if (mgmtExchange != 0) - mgmtExchange->set_type (typeName); -} - -XmlExchange::XmlExchange(const std::string& _name, bool _durable, - const FieldTable& _args, Manageable* _parent) : - Exchange(_name, _durable, _args, _parent) -{ - if (mgmtExchange != 0) - mgmtExchange->set_type (typeName); -} - -/* - * Use the name of the query as the binding key. - * - * The first time a given name is used in a binding, the query body - * must be provided.After that, no query body should be present. - * - * To modify an installed query, the user must first unbind the - * existing query, then replace it by binding again with the same - * name. - * - */ - - // #### TODO: The Binding should take the query text - // #### only. Consider encapsulating the entire block, including - // #### the if condition. - - -bool XmlExchange::bind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* bindingArguments) -{ - string queryText = bindingArguments->getString("xquery"); - - try { - RWlock::ScopedWlock l(lock); - XmlBinding::vector& bindings(bindingsMap[routingKey]); - XmlBinding::vector::iterator i; - - for (i = bindings.begin(); i != bindings.end(); i++) - if ((*i)->queue == queue) - break; - - if (i == bindings.end()) { - - Query query(xqilla.parse(X(queryText.c_str()))); - XmlBinding::shared_ptr binding(new XmlBinding (routingKey, queue, this, query)); - XmlBinding::vector bindings(1, binding); - bindingsMap[routingKey] = bindings; - QPID_LOG(trace, "Bound successfully with query: " << queryText ); - - if (mgmtExchange != 0) { - mgmtExchange->inc_bindingCount(); - ((management::Queue*) queue->GetManagementObject())->inc_bindingCount(); - } - return true; - } else{ - return false; - } - } - catch (XQException& e) { - throw InternalErrorException(QPID_MSG("Could not parse xquery:"+ queryText)); - } - catch (...) { - throw InternalErrorException(QPID_MSG("Unexpected error - Could not parse xquery:"+ queryText)); - } -} - -bool XmlExchange::unbind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* /*args*/) -{ - RWlock::ScopedWlock l(lock); - XmlBinding::vector& bindings(bindingsMap[routingKey]); - XmlBinding::vector::iterator i; - - for (i = bindings.begin(); i != bindings.end(); i++) - if ((*i)->queue == queue) - break; - - if (i < bindings.end()) { - bindings.erase(i); - if (bindings.empty()) { - bindingsMap.erase(routingKey); - } - if (mgmtExchange != 0) { - mgmtExchange->dec_bindingCount(); - ((management::Queue*) queue->GetManagementObject())->dec_bindingCount(); - } - return true; - } else { - return false; - } -} - -bool XmlExchange::matches(Query& query, Deliverable& msg, const qpid::framing::FieldTable* args) -{ - // ### TODO: Need istream for frameset - // Hack alert - the following code does not work for really large messages - - string msgContent; - - try { - msg.getMessage().getFrames().getContent(msgContent); - - QPID_LOG(trace, "matches: query is [" << UTF8(query->getQueryText()) << "]"); - QPID_LOG(trace, "matches: message content is [" << msgContent << "]"); - - boost::scoped_ptr<DynamicContext> context(query->createDynamicContext()); - if (!context.get()) { - throw InternalErrorException(QPID_MSG("Query context looks munged ...")); - } - - XERCES_CPP_NAMESPACE::MemBufInputSource xml((XMLByte*) msgContent.c_str(), msgContent.length(), "input" ); - Sequence seq(context->parseDocument(xml)); - - if (args) { - FieldTable::ValueMap::const_iterator v = args->begin(); - for(; v != args->end(); ++v) { - // ### TODO: Do types properly - if (v->second->convertsTo<std::string>()) { - QPID_LOG(trace, "XmlExchange, external variable: " << v->first << " = " << v->second->getData().getString().c_str()); - Item::Ptr value = context->getItemFactory()->createString(X(v->second->getData().getString().c_str()), context.get()); - context->setExternalVariable(X(v->first.c_str()), value); - } - } - } - - if(!seq.isEmpty() && seq.first()->isNode()) { - context->setContextItem(seq.first()); - context->setContextPosition(1); - context->setContextSize(1); - } - Result result = query->execute(context.get()); - return result->getEffectiveBooleanValue(context.get(), 0); - } - catch (XQException& e) { - QPID_LOG(warning, "Could not parse XML content (or message headers):" << msgContent); - return 0; - } - catch (...) { - QPID_LOG(warning, "Unexpected error routing message: " << msgContent); - return 0; - } - return 0; -} - -void XmlExchange::route(Deliverable& msg, const string& routingKey, const FieldTable* args) -{ - try { - RWlock::ScopedRlock l(lock); - XmlBinding::vector& bindings(bindingsMap[routingKey]); - XmlBinding::vector::iterator i; - int count(0); - - for (i = bindings.begin(); i != bindings.end(); i++) { - - if ((*i)->xquery && matches((*i)->xquery, msg, args)) { // Overly defensive? There should always be a query ... - msg.deliverTo((*i)->queue); - count++; - QPID_LOG(trace, "Delivered to queue" ); - - if ((*i)->mgmtBinding != 0) - (*i)->mgmtBinding->inc_msgMatched (); - } - - if(!count){ - QPID_LOG(warning, "XMLExchange " << getName() << ": could not route message with query " << routingKey); - if (mgmtExchange != 0) { - mgmtExchange->inc_msgDrops (); - mgmtExchange->inc_byteDrops (msg.contentSize ()); - } - } - else { - if (mgmtExchange != 0) { - mgmtExchange->inc_msgRoutes (count); - mgmtExchange->inc_byteRoutes (count * msg.contentSize ()); - } - } - - if (mgmtExchange != 0) { - mgmtExchange->inc_msgReceives (); - mgmtExchange->inc_byteReceives (msg.contentSize ()); - } - } - } - catch (...) { - QPID_LOG(warning, "XMLExchange " << getName() << ": exception routing message with query " << routingKey); - } - - -} - - -bool XmlExchange::isBound(Queue::shared_ptr queue, const string* const routingKey, const FieldTable* const) -{ - XmlBinding::vector::iterator j; - - if (routingKey) { - XmlBindingsMap::iterator i = bindingsMap.find(*routingKey); - - if (i == bindingsMap.end()) - return false; - if (!queue) - return true; - for (j = i->second.begin(); j != i->second.end(); j++) - if ((*j)->queue == queue) - return true; - } else if (!queue) { - //if no queue or routing key is specified, just report whether any bindings exist - return bindingsMap.size() > 0; - } else { - for (XmlBindingsMap::iterator i = bindingsMap.begin(); i != bindingsMap.end(); i++) - for (j = i->second.begin(); j != i->second.end(); j++) - if ((*j)->queue == queue) - return true; - return false; - } - - return false; -} - - -XmlExchange::~XmlExchange() -{ - bindingsMap.clear(); -} - -const std::string XmlExchange::typeName("xml"); - -} -} |