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author | Andrew Stitcher <astitcher@apache.org> | 2007-04-02 11:40:48 +0000 |
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committer | Andrew Stitcher <astitcher@apache.org> | 2007-04-02 11:40:48 +0000 |
commit | 16e203a0d32df9829bcf4fb738ef89fc94404155 (patch) | |
tree | b5dbb15f4a238ca377236ce16140443e20ed3e4a /cpp/src/broker/HeadersExchange.cpp | |
parent | fb410c63d08e87019b3d2a8d85820ae809758f62 (diff) | |
download | qpid-python-16e203a0d32df9829bcf4fb738ef89fc94404155.tar.gz |
Fix for the most disruptive items in QPID-243.
* All #include lines now use '""' rather than '<>' where appropriate.
* #include lines within the qpid project use relative includes so that
the same path will work in /usr/include when installed as part of the
client libraries.
* All the source code has now been rearranged to be under src in a directory
analogous to the namespace of the classes in it.
git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@524769 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'cpp/src/broker/HeadersExchange.cpp')
-rw-r--r-- | cpp/src/broker/HeadersExchange.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/cpp/src/broker/HeadersExchange.cpp b/cpp/src/broker/HeadersExchange.cpp new file mode 100644 index 0000000000..21f23af00d --- /dev/null +++ b/cpp/src/broker/HeadersExchange.cpp @@ -0,0 +1,119 @@ +/* + * + * 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 "HeadersExchange.h" +#include "../framing/Value.h" +#include "../QpidError.h" +#include <algorithm> + + +using namespace qpid::broker; +using namespace qpid::framing; +using namespace qpid::sys; + +// TODO aconway 2006-09-20: More efficient matching algorithm. +// The current search algorithm really sucks. +// Fieldtables are heavy, maybe use shared_ptr to do handle-body. + +using namespace qpid::broker; + +namespace { + const std::string all("all"); + const std::string any("any"); + const std::string x_match("x-match"); +} + +HeadersExchange::HeadersExchange(const string& _name) : Exchange(_name) { } + +void HeadersExchange::bind(Queue::shared_ptr queue, const string& /*routingKey*/, const FieldTable* args){ + Mutex::ScopedLock locker(lock); + std::string what = args->getString("x-match"); + if (what != all && what != any) { + THROW_QPID_ERROR(PROTOCOL_ERROR, "Invalid x-match value binding to headers exchange."); + } + bindings.push_back(Binding(*args, queue)); +} + +void HeadersExchange::unbind(Queue::shared_ptr queue, const string& /*routingKey*/, const FieldTable* args){ + Mutex::ScopedLock locker(lock); + Bindings::iterator i = + std::find(bindings.begin(),bindings.end(), Binding(*args, queue)); + if (i != bindings.end()) bindings.erase(i); +} + + +void HeadersExchange::route(Deliverable& msg, const string& /*routingKey*/, const FieldTable* args){ + Mutex::ScopedLock locker(lock);; + for (Bindings::iterator i = bindings.begin(); i != bindings.end(); ++i) { + if (match(i->first, *args)) msg.deliverTo(i->second); + } +} + +HeadersExchange::~HeadersExchange() {} + +const std::string HeadersExchange::typeName("headers"); + +namespace +{ + + bool match_values(const Value& bind, const Value& msg) { + return dynamic_cast<const EmptyValue*>(&bind) || bind == msg; + } + +} + + +bool HeadersExchange::match(const FieldTable& bind, const FieldTable& msg) { + typedef FieldTable::ValueMap Map; + std::string what = bind.getString(x_match); + if (what == all) { + for (Map::const_iterator i = bind.getMap().begin(); + i != bind.getMap().end(); + ++i) + { + if (i->first != x_match) + { + Map::const_iterator j = msg.getMap().find(i->first); + if (j == msg.getMap().end()) return false; + if (!match_values(*(i->second), *(j->second))) return false; + } + } + return true; + } else if (what == any) { + for (Map::const_iterator i = bind.getMap().begin(); + i != bind.getMap().end(); + ++i) + { + if (i->first != x_match) + { + Map::const_iterator j = msg.getMap().find(i->first); + if (j != msg.getMap().end()) { + if (match_values(*(i->second), *(j->second))) return true; + } + } + } + return false; + } else { + return false; + } +} + + + |