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// **********************************************************************
//
// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/IceUtil.h>
#include <Ice/Ice.h>
#include <IceStorm/IceStorm.h>
#include <Clock.h>
using namespace std;
using namespace Demo;
class ClockI : public Clock
{
public:
virtual void
tick(const string& time, const Ice::Current&)
{
cout << time << endl;
}
};
class Subscriber : public Ice::Application
{
public:
virtual int run(int, char*[]);
};
int
main(int argc, char* argv[])
{
Subscriber app;
return app.main(argc, argv, "config.sub");
}
void
usage(const string& n)
{
cerr << "Usage: " << n
<< " [--batch] [--datagram|--twoway|--ordered|--oneway] [--retryCount count] [--id id] [topic]" << endl;
}
int
Subscriber::run(int argc, char* argv[])
{
Ice::StringSeq args = Ice::argsToStringSeq(argc, argv);
args = communicator()->getProperties()->parseCommandLineOptions("Clock", args);
Ice::stringSeqToArgs(args, argc, argv);
bool batch = false;
enum Option { None, Datagram, Twoway, Oneway, Ordered};
Option option = None;
string topicName = "time";
string id;
string retryCount;
int i;
for(i = 1; i < argc; ++i)
{
string optionString = argv[i];
Option oldoption = option;
if(optionString == "--datagram")
{
option = Datagram;
}
else if(optionString == "--twoway")
{
option = Twoway;
}
else if(optionString == "--oneway")
{
option = Oneway;
}
else if(optionString == "--ordered")
{
option = Ordered;
}
else if(optionString == "--batch")
{
batch = true;
}
else if(optionString == "--id")
{
++i;
if(i >= argc)
{
usage(argv[0]);
return EXIT_FAILURE;
}
id = argv[i];
}
else if(optionString == "--retryCount")
{
++i;
if(i >= argc)
{
usage(argv[0]);
return EXIT_FAILURE;
}
retryCount = argv[i];
}
else if(optionString.substr(0, 2) == "--")
{
usage(argv[0]);
return EXIT_FAILURE;
}
else
{
topicName = argv[i++];
break;
}
if(oldoption != option && oldoption != None)
{
usage(argv[0]);
return EXIT_FAILURE;
}
}
if(i != argc)
{
usage(argv[0]);
return EXIT_FAILURE;
}
if(!retryCount.empty())
{
if(option == None)
{
option = Twoway;
}
else if(option != Twoway && option != Ordered)
{
cerr << argv[0] << ": retryCount requires a twoway proxy" << endl;
return EXIT_FAILURE;
}
}
if(batch && (option == Twoway || option == Ordered))
{
cerr << argv[0] << ": batch can only be set with oneway or datagram" << endl;
return EXIT_FAILURE;
}
IceStorm::TopicManagerPrx manager = IceStorm::TopicManagerPrx::checkedCast(
communicator()->propertyToProxy("TopicManager.Proxy"));
if(!manager)
{
cerr << appName() << ": invalid proxy" << endl;
return EXIT_FAILURE;
}
IceStorm::TopicPrx topic;
try
{
#if defined(__BCPLUSPLUS__) && (__BCPLUSPLUS__ >= 0x0600)
IceUtil::DummyBCC dummy;
#endif
topic = manager->retrieve(topicName);
}
catch(const IceStorm::NoSuchTopic&)
{
try
{
#if defined(__BCPLUSPLUS__) && (__BCPLUSPLUS__ >= 0x0600)
IceUtil::DummyBCC dummy;
#endif
topic = manager->create(topicName);
}
catch(const IceStorm::TopicExists&)
{
cerr << appName() << ": temporary failure. try again." << endl;
return EXIT_FAILURE;
}
}
Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapter("Clock.Subscriber");
//
// Add a servant for the Ice object. If --id is used the identity
// comes from the command line, otherwise a UUID is used.
//
// id is not directly altered since it is used below to detect
// whether subscribeAndGetPublisher can raise AlreadySubscribed.
//
Ice::Identity subId;
subId.name = id;
if(subId.name.empty())
{
subId.name = IceUtil::generateUUID();
}
Ice::ObjectPrx subscriber = adapter->add(new ClockI, subId);
IceStorm::QoS qos;
if(!retryCount.empty())
{
qos["retryCount"] = retryCount;
}
//
// Set up the proxy.
//
if(option == Datagram)
{
if(batch)
{
subscriber = subscriber->ice_batchDatagram();
}
else
{
subscriber = subscriber->ice_datagram();
}
}
else if(option == Twoway)
{
// Do nothing to the subscriber proxy. Its already twoway.
}
else if(option == Ordered)
{
// Do nothing to the subscriber proxy. Its already twoway.
qos["reliability"] = "ordered";
}
else if(option == Oneway || option == None)
{
if(batch)
{
subscriber = subscriber->ice_batchOneway();
}
else
{
subscriber = subscriber->ice_oneway();
}
}
try
{
topic->subscribeAndGetPublisher(qos, subscriber);
}
catch(const IceStorm::AlreadySubscribed&)
{
// If we're manually setting the subscriber id ignore.
if(id.empty())
{
throw;
}
cout << "reactivating persistent subscriber" << endl;
}
adapter->activate();
shutdownOnInterrupt();
communicator()->waitForShutdown();
topic->unsubscribe(subscriber);
return EXIT_SUCCESS;
}
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