client.cpp

ICE-3.2 一个开源的中间件

// **********************************************************************
//
// Copyright (c) 2003-2007 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 <Ice/Application.h>
#include <Callback.h>

using namespace std;
using namespace Demo;

class CallbackReceiverI : public CallbackReceiver
{
public:

    virtual void callback(const Ice::Current&)
    {
#ifdef __xlC__
        //
        // The xlC compiler synchronizes cin and cout; to see the messages
        // while accepting input through cin, we have to print the messages
        // with printf
        //
        printf("received callback\n");
        fflush(0);
#else
        cout << "received callback" << endl;
#endif
    }
};

class CallbackClient : public Ice::Application
{
public:

    virtual int run(int, char*[]);
    virtual void interruptCallback(int);

private:

    void menu();
};

int
main(int argc, char* argv[])
{
    CallbackClient app;
    return app.main(argc, argv, "config.client");
}

int
CallbackClient::run(int argc, char* argv[])
{
    //
    // Since this is an interactive demo we want the custom interrupt
    // callback to be called when the process is interrupted.
    //
    callbackOnInterrupt();

    CallbackSenderPrx twoway = CallbackSenderPrx::checkedCast(
        communicator()->propertyToProxy("Callback.CallbackServer")->
            ice_twoway()->ice_timeout(-1)->ice_secure(false));
    if(!twoway)
    {
        cerr << appName() << ": invalid proxy" << endl;
        return EXIT_FAILURE;
    }
    CallbackSenderPrx oneway = CallbackSenderPrx::uncheckedCast(twoway->ice_oneway());
    CallbackSenderPrx batchOneway = CallbackSenderPrx::uncheckedCast(twoway->ice_batchOneway());
    CallbackSenderPrx datagram = CallbackSenderPrx::uncheckedCast(twoway->ice_datagram());
    CallbackSenderPrx batchDatagram = CallbackSenderPrx::uncheckedCast(twoway->ice_batchDatagram());
    
    Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapter("Callback.Client");
    adapter->add(new CallbackReceiverI, communicator()->stringToIdentity("callbackReceiver"));
    adapter->activate();

    CallbackReceiverPrx twowayR = CallbackReceiverPrx::uncheckedCast(
        adapter->createProxy(communicator()->stringToIdentity("callbackReceiver")));
    CallbackReceiverPrx onewayR = CallbackReceiverPrx::uncheckedCast(twowayR->ice_oneway());
    CallbackReceiverPrx datagramR = CallbackReceiverPrx::uncheckedCast(twowayR->ice_datagram());

    bool secure = false;
    string secureStr = "";

    menu();

    char c;
    do
    {
        try
        {
            cout << "==> ";
            cin >> c;
            if(c == 't')
            {
                twoway->initiateCallback(twowayR);
            }
            else if(c == 'o')
            {
                oneway->initiateCallback(onewayR);
            }
            else if(c == 'O')
            {
                batchOneway->initiateCallback(onewayR);
            }
            else if(c == 'd')
            {
                if(secure)
                {
                    cout << "secure datagrams are not supported" << endl;
                }
                else
                {
                    datagram->initiateCallback(datagramR);
                }
            }
            else if(c == 'D')
            {
                if(secure)
                {
                    cout << "secure datagrams are not supported" << endl;
                }
                else
                {
                    batchDatagram->initiateCallback(datagramR);
                }
            }
            else if(c == 'f')
            {
                communicator()->flushBatchRequests();
            }
            else if(c == 'S')
            {
                secure = !secure;
                secureStr = secure ? "s" : "";
                
                twoway = CallbackSenderPrx::uncheckedCast(twoway->ice_secure(secure));
                oneway = CallbackSenderPrx::uncheckedCast(oneway->ice_secure(secure));
                batchOneway = CallbackSenderPrx::uncheckedCast(batchOneway->ice_secure(secure));
                datagram = CallbackSenderPrx::uncheckedCast(datagram->ice_secure(secure));
                batchDatagram = CallbackSenderPrx::uncheckedCast(batchDatagram->ice_secure(secure));

                twowayR = CallbackReceiverPrx::uncheckedCast(twowayR->ice_secure(secure));
                onewayR = CallbackReceiverPrx::uncheckedCast(onewayR->ice_secure(secure));
                datagramR = CallbackReceiverPrx::uncheckedCast(datagramR->ice_secure(secure));
                
                if(secure)
                {
                    cout << "secure mode is now on" << endl;
                }
                else
                {
                    cout << "secure mode is now off" << endl;
                }
            }
            else if(c == 's')
            {
                twoway->shutdown();
            }
            else if(c == 'x')
            {
                // Nothing to do
            }
            else if(c == '?')
            {
                menu();
            }
            else
            {
                cout << "unknown command `" << c << "'" << endl;
                menu();
            }
        }
        catch(const Ice::Exception& ex)
        {
            cerr << ex << endl;
        }
    }
    while(cin.good() && c != 'x');

    return EXIT_SUCCESS;
}

void
CallbackClient::interruptCallback(int)
{
    try
    {
        communicator()->destroy();
    }
    catch(const IceUtil::Exception& ex)
    {
        cerr << appName() << ": " << ex << endl;
    }
    catch(...)
    {
        cerr << appName() << ": unknown exception" << endl;
    }
    exit(EXIT_SUCCESS);
}

void
CallbackClient::menu()
{
    cout <<
        "usage:\n"
        "t: send callback as twoway\n"
        "o: send callback as oneway\n"
        "O: send callback as batch oneway\n"
        "d: send callback as datagram\n"
        "D: send callback as batch datagram\n"
        "f: flush all batch requests\n"
        "S: switch secure mode on/off\n"
        "s: shutdown server\n"
        "x: exit\n"
        "?: help\n";
}