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/*
*
* 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/FailoverManager.h>
#include <qpid/client/Session.h>
#include <qpid/client/Message.h>
#include <qpid/client/SubscriptionManager.h>
#include <qpid/client/SubscriptionManager.h>
#include "TestOptions.h"
#include <iostream>
#include <fstream>
using namespace qpid;
using namespace qpid::client;
using namespace qpid::framing;
using namespace std;
struct Args : public qpid::TestOptions
{
string queue;
uint messages;
bool ignoreDuplicates;
uint creditWindow;
uint ackFrequency;
Args() : queue("test-queue"), messages(0), ignoreDuplicates(false), creditWindow(0), ackFrequency(1)
{
addOptions()
("queue", qpid::optValue(queue, "QUEUE NAME"), "Queue from which to request messages")
("messages", qpid::optValue(messages, "N"), "Number of messages to receive; 0 means receive indefinitely")
("ignore-duplicates", qpid::optValue(ignoreDuplicates), "Detect and ignore duplicates (by checking 'sn' header)")
("credit-window", qpid::optValue(creditWindow, "N"), "Credit window (0 implies infinite window)")
("ack-frequency", qpid::optValue(ackFrequency, "N"), "Ack frequency (0 implies none of the messages will get accepted)");
}
};
const string EOS("eos");
class Receiver : public MessageListener, public FailoverManager::Command
{
public:
Receiver(const string& queue, uint messages, bool ignoreDuplicates, uint creditWindow, uint ackFrequency);
void received(Message& message);
void execute(AsyncSession& session, bool isRetry);
private:
const string queue;
const uint count;
const bool skipDups;
SubscriptionSettings settings;
Subscription subscription;
uint processed;
uint lastSn;
bool isDuplicate(Message& message);
};
Receiver::Receiver(const string& q, uint messages, bool ignoreDuplicates, uint creditWindow, uint ackFrequency) :
queue(q), count(messages), skipDups(ignoreDuplicates), processed(0), lastSn(0)
{
if (creditWindow) settings.flowControl = FlowControl::messageWindow(creditWindow);
settings.autoAck = ackFrequency;
}
void Receiver::received(Message& message)
{
if (!(skipDups && isDuplicate(message))) {
bool eos = message.getData() == EOS;
if (!eos) std::cout << message.getData() << std::endl;
if (eos || ++processed == count) subscription.cancel();
}
}
bool Receiver::isDuplicate(Message& message)
{
uint sn = message.getHeaders().getAsInt("sn");
if (lastSn < sn) {
lastSn = sn;
return false;
} else {
return true;
}
}
void Receiver::execute(AsyncSession& session, bool /*isRetry*/)
{
SubscriptionManager subs(session);
subscription = subs.subscribe(*this, queue, settings);
subs.run();
}
int main(int argc, char ** argv)
{
Args opts;
try {
opts.parse(argc, argv);
FailoverManager connection(opts.con);
Receiver receiver(opts.queue, opts.messages, opts.ignoreDuplicates, opts.creditWindow, opts.ackFrequency);
connection.execute(receiver);
connection.close();
return 0;
} catch(const std::exception& error) {
std::cerr << "Failure: " << error.what() << std::endl;
}
return 1;
}
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