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-rw-r--r--cpp/src/Makefile.am14
-rw-r--r--cpp/src/qpid/client/SubscriptionManager.cpp97
-rw-r--r--cpp/src/qpid/client/SubscriptionManager.h93
3 files changed, 198 insertions, 6 deletions
diff --git a/cpp/src/Makefile.am b/cpp/src/Makefile.am
index 2f1d0b32d4..09bdb351b1 100644
--- a/cpp/src/Makefile.am
+++ b/cpp/src/Makefile.am
@@ -197,12 +197,12 @@ libqpidbroker_la_SOURCES = \
libqpidclient_la_LIBADD = libqpidcommon.la
libqpidclient_la_SOURCES = \
- $(rgen_client_cpp) \
- qpid/client/Connection.cpp \
+ $(rgen_client_cpp) \
+ qpid/client/Connection.cpp \
qpid/client/Channel.cpp \
- qpid/client/Exchange.cpp \
- qpid/broker/PersistableMessage.cpp \
- qpid/client/Queue.cpp \
+ qpid/client/Exchange.cpp \
+ qpid/broker/PersistableMessage.cpp \
+ qpid/client/Queue.cpp \
qpid/client/ConnectionImpl.cpp \
qpid/client/Connector.cpp \
qpid/client/Demux.cpp \
@@ -216,7 +216,8 @@ libqpidclient_la_SOURCES = \
qpid/client/FutureResponse.cpp \
qpid/client/FutureResult.cpp \
qpid/client/SessionCore.cpp \
- qpid/client/StateManager.cpp
+ qpid/client/StateManager.cpp \
+ qpid/client/SubscriptionManager.cpp
nobase_include_HEADERS = \
$(platform_hdr) \
@@ -325,6 +326,7 @@ nobase_include_HEADERS = \
qpid/client/Response.h \
qpid/client/SessionCore.h \
qpid/client/StateManager.h \
+ qpid/client/SubscriptionManager.h \
qpid/client/TypedResult.h \
qpid/framing/AMQBody.h \
qpid/framing/AMQContentBody.h \
diff --git a/cpp/src/qpid/client/SubscriptionManager.cpp b/cpp/src/qpid/client/SubscriptionManager.cpp
new file mode 100644
index 0000000000..4a4e3d0236
--- /dev/null
+++ b/cpp/src/qpid/client/SubscriptionManager.cpp
@@ -0,0 +1,97 @@
+/*
+ *
+ * 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.
+ *
+ */
+#ifndef _Subscription_
+#define _Subscription_
+
+#include "SubscriptionManager.h"
+#include <qpid/client/Dispatcher.h>
+#include <qpid/client/Session.h>
+#include <qpid/client/MessageListener.h>
+#include <set>
+#include <sstream>
+
+
+namespace qpid {
+namespace client {
+
+SubscriptionManager::SubscriptionManager(Session_0_10& s)
+ : dispatcher(s), session(s), messages(1), bytes(UNLIMITED), autoStop(true)
+{}
+
+std::string SubscriptionManager::uniqueTag(const std::string& tag) {
+ // Make unique tag.
+ int count=1;
+ std::string unique=tag;
+ while (subscriptions.find(tag) != subscriptions.end()) {
+ std::ostringstream s;
+ s << tag << "-" << count++;
+ unique=s.str();
+ }
+ subscriptions.insert(unique);
+ return tag;
+}
+
+std::string SubscriptionManager::subscribe(
+ MessageListener& listener, const std::string& q, const std::string& t)
+{
+ std::string tag=uniqueTag(t);
+ using namespace arg;
+ session.messageSubscribe(arg::queue=q, arg::destination=tag);
+ flowLimits(tag, messages, bytes);
+ dispatcher.listen(tag, &listener);
+ return tag;
+}
+
+void SubscriptionManager::flowLimits(
+ const std::string& tag, uint32_t messages, uint32_t bytes) {
+ session.messageFlow(tag, 0, messages);
+ session.messageFlow(tag, 1, bytes);
+}
+
+void SubscriptionManager::flowLimits(uint32_t m, uint32_t b) {
+ messages=m;
+ bytes=b;
+}
+
+void SubscriptionManager::cancel(const std::string tag)
+{
+ if (subscriptions.erase(tag)) {
+ dispatcher.cancel(tag);
+ session.messageCancel(tag);
+ if (autoStop && subscriptions.empty()) stop();
+ }
+}
+
+void SubscriptionManager::run(bool autoStop_)
+{
+ autoStop=autoStop_;
+ if (autoStop && subscriptions.empty()) return;
+ dispatcher.run();
+}
+
+void SubscriptionManager::stop()
+{
+ dispatcher.stop();
+}
+
+}} // namespace qpid::client
+
+#endif
diff --git a/cpp/src/qpid/client/SubscriptionManager.h b/cpp/src/qpid/client/SubscriptionManager.h
new file mode 100644
index 0000000000..985b6ce222
--- /dev/null
+++ b/cpp/src/qpid/client/SubscriptionManager.h
@@ -0,0 +1,93 @@
+#ifndef QPID_CLIENT_SUBSCRIPTIONMANAGER_H
+#define QPID_CLIENT_SUBSCRIPTIONMANAGER_H
+
+/*
+ *
+ * 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/client/Dispatcher.h>
+#include <qpid/client/Session_0_10.h>
+#include <qpid/client/MessageListener.h>
+#include <set>
+#include <sstream>
+
+namespace qpid {
+namespace client {
+
+struct TagNotUniqueException : public qpid::Exception {
+ TagNotUniqueException() {}
+};
+
+class SubscriptionManager
+{
+ std::set<std::string> subscriptions;
+ qpid::client::Dispatcher dispatcher;
+ qpid::client::Session_0_10& session;
+ std::string uniqueTag(const std::string&);
+ uint32_t messages;
+ uint32_t bytes;
+ bool autoStop;
+
+public:
+ SubscriptionManager(Session_0_10& session);
+
+ /**
+ * Subscribe listener to receive messages from queue.
+ *@param listener Listener object to receive messages.
+ *@param queue Name of the queue to subscribe to.
+ *@param tag Unique destination tag for the listener.
+ * If not specified a unique tag will be generted based on the queue name.
+ *@return Destination tag.
+ *@exception TagNotUniqueException if there is already a subscription
+ * with the same tag.
+ */
+ std::string subscribe(MessageListener& listener,
+ const std::string& queue,
+ const std::string& tag=std::string());
+
+ /** Cancel a subscription. */
+ void cancel(const std::string tag);
+
+ qpid::client::Dispatcher& getDispatcher() { return dispatcher; }
+ size_t size() { return subscriptions.size(); }
+
+ /** Deliver messages until stop() is called.
+ *@param autoStop If true, return when all subscriptions are cancelled.
+ */
+ void run(bool autoStop=true);
+
+ /** Cause run() to return */
+ void stop();
+
+ static const uint32_t UNLIMITED=0xFFFFFFFF;
+
+ /** Set the flow control limits for subscriber with tag.
+ * UNLIMITED means no limit.
+ */
+ void flowLimits(const std::string& tag, uint32_t messages, uint32_t bytes);
+
+ /** Set the initial flow control limits for new subscribers */
+ void flowLimits(uint32_t messages, uint32_t bytes);
+};
+
+
+}} // namespace qpid::client
+
+#endif /*!QPID_CLIENT_SUBSCRIPTIONMANAGER_H*/
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