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https://issues.apache.org/jira/browse/PROTON-1442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18016820#comment-18016820
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ASF GitHub Bot commented on PROTON-1442:
----------------------------------------
astitcher commented on code in PR #437:
URL: https://github.com/apache/qpid-proton/pull/437#discussion_r2307871160
##########
cpp/examples/tx_recv.cpp:
##########
@@ -0,0 +1,132 @@
+/*
+ *
+ * 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 "options.hpp"
+
+#include <proton/connection.hpp>
+#include <proton/container.hpp>
+#include <proton/message.hpp>
+#include <proton/message_id.hpp>
+#include <proton/messaging_handler.hpp>
+#include <proton/types.hpp>
+#include <proton/transaction_handler.hpp>
+
+#include <iostream>
+#include <map>
+#include <string>
+
+#include <chrono>
+#include <thread>
+
+class tx_recv : public proton::messaging_handler, proton::transaction_handler {
+ private:
+ proton::receiver receiver;
+ std::string conn_url_;
+ std::string addr_;
+ int expected;
+ int batch_size;
+ int current_batch = 0;
+ int committed = 0;
+
+ proton::session session;
+ public:
+ tx_recv(const std::string& u, const std::string &a, int c, int b):
+ conn_url_(u), addr_(a), expected(c), batch_size(b) {}
+
+ void on_container_start(proton::container &c) override {
+ c.connect(conn_url_);
+ }
+
+ void on_connection_open(proton::connection& c) override {
+ c.open_session();
+ }
+
+ void on_session_open(proton::session &s) override {
+ s.open_sender(addr_);
+ session = s;
+ std::cout << "Session open, declare_txn" << std::endl;
+ s.declare_transaction(*this);
+ }
+
+ void on_transaction_declare_failed(proton::session) {}
+
+ void on_transaction_commit_failed(proton::session s) {
+ std::cout << "Transaction Commit Failed" << std::endl;
+ s.connection().close();
+ exit(-1);
+ }
+
+ void on_transaction_declared(proton::session s) override {
+ std::cout << "Transaction is declared!" << (&s)
+ << std::endl;
+ receiver.add_credit(batch_size);
+ }
+
+ void on_message(proton::delivery &d, proton::message &msg) override {
+ std::cout<<"# MESSAGE: " << msg.id() <<": " << msg.body() <<
std::endl;
+ session.transaction_accept(d);
+ current_batch += 1;
+ if(current_batch == batch_size) {
+ }
Review Comment:
Need to commit or abort transaction here
##########
cpp/include/proton/session.hpp:
##########
@@ -105,14 +106,31 @@ PN_CPP_CLASS_EXTERN session : public
internal::object<pn_session_t>, public endp
/// Get user data from this session.
PN_CPP_EXTERN void* user_data() const;
+ PN_CPP_EXTERN void declare_transaction(proton::transaction_handler
&handler, bool settle_before_discharge = false);
+
+ PN_CPP_EXTERN bool transaction_is_empty();
+ PN_CPP_EXTERN bool transaction_is_declared();
+ PN_CPP_EXTERN void transaction_commit();
+ PN_CPP_EXTERN void transaction_abort();
+ PN_CPP_EXTERN void transaction_declare();
+ PN_CPP_EXTERN void transaction_handle_outcome(proton::tracker);
+ PN_CPP_EXTERN void attach_txn_id(proton::tracker t);
+ PN_CPP_EXTERN void transaction_accept(delivery &t);
+ PN_CPP_EXTERN proton::connection transaction_connection() const;
Review Comment:
These are all internal functions and shouldn't be in the visible header file
##########
cpp/examples/tx_recv.cpp:
##########
@@ -0,0 +1,132 @@
+/*
+ *
+ * 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 "options.hpp"
+
+#include <proton/connection.hpp>
+#include <proton/container.hpp>
+#include <proton/message.hpp>
+#include <proton/message_id.hpp>
+#include <proton/messaging_handler.hpp>
+#include <proton/types.hpp>
+#include <proton/transaction_handler.hpp>
+
+#include <iostream>
+#include <map>
+#include <string>
+
+#include <chrono>
+#include <thread>
+
+class tx_recv : public proton::messaging_handler, proton::transaction_handler {
+ private:
+ proton::receiver receiver;
+ std::string conn_url_;
+ std::string addr_;
+ int expected;
+ int batch_size;
+ int current_batch = 0;
+ int committed = 0;
+
+ proton::session session;
+ public:
+ tx_recv(const std::string& u, const std::string &a, int c, int b):
+ conn_url_(u), addr_(a), expected(c), batch_size(b) {}
+
+ void on_container_start(proton::container &c) override {
+ c.connect(conn_url_);
+ }
+
+ void on_connection_open(proton::connection& c) override {
+ c.open_session();
+ }
+
+ void on_session_open(proton::session &s) override {
+ s.open_sender(addr_);
+ session = s;
+ std::cout << "Session open, declare_txn" << std::endl;
+ s.declare_transaction(*this);
+ }
+
+ void on_transaction_declare_failed(proton::session) {}
+
+ void on_transaction_commit_failed(proton::session s) {
+ std::cout << "Transaction Commit Failed" << std::endl;
+ s.connection().close();
+ exit(-1);
+ }
+
+ void on_transaction_declared(proton::session s) override {
+ std::cout << "Transaction is declared!" << (&s)
+ << std::endl;
+ receiver.add_credit(batch_size);
+ }
+
+ void on_message(proton::delivery &d, proton::message &msg) override {
+ std::cout<<"# MESSAGE: " << msg.id() <<": " << msg.body() <<
std::endl;
+ session.transaction_accept(d);
Review Comment:
should just be accept now as this is already a transactioned session
##########
cpp/include/proton/session.hpp:
##########
@@ -105,14 +106,31 @@ PN_CPP_CLASS_EXTERN session : public
internal::object<pn_session_t>, public endp
/// Get user data from this session.
PN_CPP_EXTERN void* user_data() const;
+ PN_CPP_EXTERN void declare_transaction(proton::transaction_handler
&handler, bool settle_before_discharge = false);
Review Comment:
I think this is meant to be called transaction_declare(...) once the
internal function below is removed
##########
cpp/include/proton/session.hpp:
##########
@@ -36,6 +36,7 @@
struct pn_session_t;
namespace proton {
+ class transaction_impl;
Review Comment:
transaction_impl is pirely internal and should not be in an externally
visible header file
> [c++] Support for transactions
> ------------------------------
>
> Key: PROTON-1442
> URL: https://issues.apache.org/jira/browse/PROTON-1442
> Project: Qpid Proton
> Issue Type: Improvement
> Components: cpp-binding
> Reporter: Radim Kubis
> Assignee: Rakhi Kumari
> Priority: Major
>
> Support for transactions in Qpid Proton C++.
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