1 files changed, 194 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/broker/DirectExchange.cpp b/qpid/cpp/src/qpid/broker/DirectExchange.cpp
new file mode 100644
index 0000000000..060f80f60d
--- /dev/null
+++ b/qpid/cpp/src/qpid/broker/DirectExchange.cpp
@@ -0,0 +1,194 @@
+/*
+ *
+ * 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/log/Statement.h"
+#include "qpid/broker/FedOps.h"
+#include "qpid/broker/Queue.h"
+#include "qpid/broker/DirectExchange.h"
+#include <iostream>
+
+using namespace qpid::broker;
+using namespace qpid::framing;
+using namespace qpid::sys;
+using qpid::management::Manageable;
+namespace _qmf = qmf::org::apache::qpid::broker;
+
+namespace 
+{
+    const std::string qpidExclusiveBinding("qpid.exclusive-binding");
+}
+
+DirectExchange::DirectExchange(const string& _name, Manageable* _parent, Broker* b) : Exchange(_name, _parent, b)
+{
+    if (mgmtExchange != 0)
+        mgmtExchange->set_type(typeName);
+}
+
+DirectExchange::DirectExchange(const string& _name, bool _durable,
+                               const FieldTable& _args, Manageable* _parent, Broker* b) :
+    Exchange(_name, _durable, _args, _parent, b)
+{
+    if (mgmtExchange != 0)
+        mgmtExchange->set_type(typeName);
+}
+
+bool DirectExchange::bind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* args)
+{
+    string fedOp(fedOpBind);
+    string fedTags;
+    string fedOrigin;
+    bool exclusiveBinding = false;
+    if (args) {
+        fedOp = args->getAsString(qpidFedOp);
+        fedTags = args->getAsString(qpidFedTags);
+        fedOrigin = args->getAsString(qpidFedOrigin);
+        exclusiveBinding = args->get(qpidExclusiveBinding);  // only direct exchanges take exclusive bindings
+    }
+
+    bool propagate = false;
+
+    if (args == 0 || fedOp.empty() || fedOp == fedOpBind) {
+        Mutex::ScopedLock l(lock);
+        Binding::shared_ptr b(new Binding(routingKey, queue, this, FieldTable(), fedOrigin));
+        BoundKey& bk = bindings[routingKey];
+        if (exclusiveBinding) bk.queues.clear();
+
+        QPID_LOG(debug, "Bind key [" << routingKey << "] to queue " << queue->getName()
+                 << " (origin=" << fedOrigin << ")");
+
+        if (bk.queues.add_unless(b, MatchQueue(queue))) {
+            b->startManagement();
+            propagate = bk.fedBinding.addOrigin(queue->getName(), fedOrigin);
+            if (mgmtExchange != 0) {
+                mgmtExchange->inc_bindingCount();
+            }
+        } else {
+            // queue already present - still need to track fedOrigin
+            bk.fedBinding.addOrigin(queue->getName(), fedOrigin);
+            return false;
+        }
+    } else if (fedOp == fedOpUnbind) {
+        Mutex::ScopedLock l(lock);
+        BoundKey& bk = bindings[routingKey];
+
+        QPID_LOG(debug, "Bind - fedOpUnbind key [" << routingKey << "] queue " << queue->getName()
+                 << " (origin=" << fedOrigin << ")" << " (count=" << bk.fedBinding.count() << ")");
+
+        propagate = bk.fedBinding.delOrigin(queue->getName(), fedOrigin);
+        if (bk.fedBinding.countFedBindings(queue->getName()) == 0)
+            unbind(queue, routingKey, args);
+
+    } else if (fedOp == fedOpReorigin) {
+        /** gather up all the keys that need rebinding in a local vector
+         * while holding the lock.  Then propagate once the lock is
+         * released
+         */
+        std::vector<std::string> keys2prop;
+        {
+            Mutex::ScopedLock l(lock);    
+            for (Bindings::iterator iter = bindings.begin();
+                 iter != bindings.end(); iter++) {
+                const BoundKey& bk = iter->second;
+                if (bk.fedBinding.hasLocal()) {
+                    keys2prop.push_back(iter->first);
+                }
+            }
+        }   /* lock dropped */
+        for (std::vector<std::string>::const_iterator key = keys2prop.begin();
+             key != keys2prop.end(); key++) {
+            propagateFedOp( *key, string(), fedOpBind, string());
+        }
+    }
+
+    routeIVE();
+    if (propagate)
+        propagateFedOp(routingKey, fedTags, fedOp, fedOrigin);
+    return true;
+}
+
+bool DirectExchange::unbind(Queue::shared_ptr queue, const string& routingKey, const FieldTable* args)
+{
+    string fedOrigin(args ? args->getAsString(qpidFedOrigin) : "");
+    bool propagate = false;
+
+    QPID_LOG(debug, "Unbinding key [" << routingKey << "] from queue " << queue->getName()
+             << " on exchange " << getName() << " origin=" << fedOrigin << ")" );
+    {
+        Mutex::ScopedLock l(lock);
+        BoundKey& bk = bindings[routingKey];
+        if (bk.queues.remove_if(MatchQueue(queue))) {
+            propagate = bk.fedBinding.delOrigin(queue->getName(), fedOrigin);
+            if (mgmtExchange != 0) {
+                mgmtExchange->dec_bindingCount();
+            }
+        } else {
+            return false;
+        }
+    }
+
+    // If I delete my local binding, propagate this unbind to any upstream brokers
+    if (propagate)
+        propagateFedOp(routingKey, string(), fedOpUnbind, string());
+    return true;
+}
+
+void DirectExchange::route(Deliverable& msg, const string& routingKey, const FieldTable* /*args*/)
+{
+    PreRoute pr(msg, this);
+    ConstBindingList b;
+    {
+        Mutex::ScopedLock l(lock);
+        b = bindings[routingKey].queues.snapshot();
+    }
+    doRoute(msg, b);
+}
+
+
+bool DirectExchange::isBound(Queue::shared_ptr queue, const string* const routingKey, const FieldTable* const)
+{
+    Mutex::ScopedLock l(lock);
+    if (routingKey) {
+        Bindings::iterator i = bindings.find(*routingKey);
+
+        if (i == bindings.end())
+            return false;
+        if (!queue)
+            return true;
+
+        Queues::ConstPtr p = i->second.queues.snapshot();
+        return p && std::find_if(p->begin(), p->end(), MatchQueue(queue)) != p->end();
+    } else if (!queue) {
+        //if no queue or routing key is specified, just report whether any bindings exist
+        return bindings.size() > 0;
+    } else {
+        for (Bindings::iterator i = bindings.begin(); i != bindings.end(); i++) {
+            Queues::ConstPtr p = i->second.queues.snapshot();
+            if (p && std::find_if(p->begin(), p->end(), MatchQueue(queue)) != p->end()) return true;
+        }
+        return false;
+    }
+
+    return false;
+}
+
+DirectExchange::~DirectExchange() {}
+
+const std::string DirectExchange::typeName("direct");