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https://issues.apache.org/jira/browse/PROTON-1442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17942370#comment-17942370
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ASF GitHub Bot commented on PROTON-1442:
----------------------------------------
DreamPearl commented on code in PR #437:
URL: https://github.com/apache/qpid-proton/pull/437#discussion_r2036624524
##########
cpp/examples/tx_send.cpp:
##########
@@ -0,0 +1,175 @@
+/*
+ *
+ * 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.hpp>
+
+#include <iostream>
+#include <map>
+#include <string>
+
+#include <chrono>
+#include <thread>
+
+class tx_send : public proton::messaging_handler, proton::transaction_handler {
+ private:
+ proton::sender sender;
+ std::string url;
+ int total;
+ int batch_size;
+ int sent;
+ int batch_index = 0;
+ int current_batch = 0;
+ int committed = 0;
+ int confirmed = 0;
+
+ proton::session session;
+ proton::transaction transaction;
+ public:
+ tx_send(const std::string &s, int c, int b):
+ url(s), total(c), batch_size(b), sent(0) {}
+
+ void on_container_start(proton::container &c) override {
+ sender = c.open_sender(url);
+ }
+
+ void on_session_open(proton::session &s) override {
+ session = s;
+ std::cout << " [on_session_open] declare_txn started..." <<
std::endl;
+ s.declare_transaction(*this);
+ std::cout << " [on_session_open] declare_txn ended..." << std::endl;
+ }
+
+ void on_transaction_declare_failed(proton::transaction) {}
+ void on_transaction_commit_failed(proton::transaction t) {
+ std::cout << "Transaction Commit Failed" << std::endl;
+ t.connection().close();
+ exit(-1);
+ }
+
+ void on_transaction_declared(proton::transaction t) override {
+ std::cout << "[on_transaction_declared] txn called " << (&t)
+ << std::endl;
+ std::cout << "[on_transaction_declared] txn is_empty " <<
(t.is_empty())
+ << "\t" << transaction.is_empty() << std::endl;
+ transaction = t;
+
+ send(sender);
+ }
+
+ void on_sendable(proton::sender &s) override {
+ std::cout << " [OnSendable] transaction: " << &transaction
+ << std::endl;
+ send(s);
+ }
+
+ void send(proton::sender &s) {
+ static int unique_id = 10000;
+ while (!transaction.is_empty() && sender.credit() &&
+ (committed + current_batch) < total) {
+ proton::message msg;
+ std::map<std::string, int> m;
+ m["sequence"] = committed + current_batch;
+
+ msg.id(unique_id++);
+ msg.body(m);
+ std::cout << "##### [example] transaction send msg: " << msg
+ << std::endl;
+ transaction.send(sender, msg);
+ current_batch += 1;
+ if(current_batch == batch_size)
+ {
+ std::cout << " >> Txn attempt commit" << std::endl;
+ if (batch_index % 2 == 0) {
Review Comment:
Yes, it is intended. To make sure the msg abort is working fine.
> [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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