QPID-3225: Allow exclusivity (for subscription queue and subscription itself) to be controlled through address properties.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1135165 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 16 insertions, 5 deletions

diff --git a/cpp/src/qpid/client/amqp0_10/AddressResolution.cpp b/cpp/src/qpid/client/amqp0_10/AddressResolution.cpp
index f1295a3b66..9cf5f31290 100644
--- a/cpp/src/qpid/client/amqp0_10/AddressResolution.cpp
+++ b/cpp/src/qpid/client/amqp0_10/AddressResolution.cpp
@@ -233,6 +233,8 @@ class Subscription : public Exchange, public MessageSource
     const bool reliable;
     const bool durable;
     const std::string actualType;
+    const bool exclusiveQueue;
+    const bool exclusiveSubscription;
     FieldTable queueOptions;
     FieldTable subscriptionOptions;
     Bindings bindings;
@@ -307,6 +309,7 @@ struct Opt
     Opt& operator/(const std::string& name);
     operator bool() const;
     std::string str() const;
+    bool asBool(bool defaultValue) const;
     const Variant::List& asList() const;
     void collect(qpid::framing::FieldTable& args) const;
 
@@ -338,6 +341,12 @@ Opt::operator bool() const
     return value && !value->isVoid() && value->asBool();
 }
 
+bool Opt::asBool(bool defaultValue) const
+{
+    if (value) return value->asBool();
+    else return defaultValue;
+}
+
 std::string Opt::str() const
 {
     if (value) return value->asString();
@@ -490,7 +499,9 @@ Subscription::Subscription(const Address& address, const std::string& type)
       queue(getSubscriptionName(name, (Opt(address)/LINK/NAME).str())),
       reliable(AddressResolution::is_reliable(address)),
       durable(Opt(address)/LINK/DURABLE),
-      actualType(type.empty() ? (specifiedType.empty() ? TOPIC_EXCHANGE : specifiedType) : type)
+      actualType(type.empty() ? (specifiedType.empty() ? TOPIC_EXCHANGE : specifiedType) : type),
+      exclusiveQueue((Opt(address)/LINK/X_DECLARE/EXCLUSIVE).asBool(true)),
+      exclusiveSubscription((Opt(address)/LINK/X_SUBSCRIBE/EXCLUSIVE).asBool(exclusiveQueue))
 {
     (Opt(address)/LINK/X_DECLARE/ARGUMENTS).collect(queueOptions);
     (Opt(address)/LINK/X_SUBSCRIBE/ARGUMENTS).collect(subscriptionOptions);
@@ -550,7 +561,7 @@ void Subscription::subscribe(qpid::client::AsyncSession& session, const std::str
     checkAssert(session, FOR_RECEIVER);
 
     //create subscription queue:
-    session.queueDeclare(arg::queue=queue, arg::exclusive=true, 
+    session.queueDeclare(arg::queue=queue, arg::exclusive=exclusiveQueue,
                          arg::autoDelete=!reliable, arg::durable=durable, arg::arguments=queueOptions);
     //'default' binding:
     bindings.bind(session);
@@ -559,15 +570,15 @@ void Subscription::subscribe(qpid::client::AsyncSession& session, const std::str
     linkBindings.bind(session);
     //subscribe to subscription queue:
     AcceptMode accept = reliable ? ACCEPT_MODE_EXPLICIT : ACCEPT_MODE_NONE;
-    session.messageSubscribe(arg::queue=queue, arg::destination=destination, 
-                             arg::exclusive=true, arg::acceptMode=accept, arg::arguments=subscriptionOptions);
+    session.messageSubscribe(arg::queue=queue, arg::destination=destination,
+                             arg::exclusive=exclusiveSubscription, arg::acceptMode=accept, arg::arguments=subscriptionOptions);
 }
 
 void Subscription::cancel(qpid::client::AsyncSession& session, const std::string& destination)
 {
     linkBindings.unbind(session);
     session.messageCancel(destination);
-    session.queueDelete(arg::queue=queue);
+    if (reliable) session.queueDelete(arg::queue=queue, arg::ifUnused=true);
     checkDelete(session, FOR_RECEIVER);
 }