source: tmcsimulator/branches/fep_rpc_client/FEPClient.cpp @ 77

#include "FEPClient.h"

/**
 * Constructor
 * 
 * @param host The host rpc server ip address
 * @param networkFile the xml network file
 */
FEPClient::FEPClient(char * host, char * networkFile)
{
        createClient(host);
        networkReader = new NetworkReader(networkFile);
        updateATMS();
}

/**
 * Destructor
 */
FEPClient::~FEPClient()
{
        cout << "Destroying client..." << endl;
        clnt_destroy(clnt);
}

/**
 * Handler for the ATMS RPC Response (to the client RPC Call)
 * @param response pointer to fep_reply struct
 */
void FEPClient::handleCallResponse(void *response)
{
        /* If ATMS reply call fails */
        if (response == NULL)
        {
                clnt_perror(clnt, "RPC call failed");
        }
        /* If ATMS reply is successful */
        else
        {
                cout << "Successful RPC call to ATMS..." << endl;
        }
}

/**
 * Sends an fep_reply for every line in the FEP.
 */
void FEPClient::updateATMS()
{
        int i, j; // i == line_index, j == lds_index
        void *rv;

    vector<FEP_LINE> lines = networkReader->getLines();
    vector<LDS_LOOP> ldsMap = networkReader->getStations();

        // Send one reply for every "line" in the FEP
        for (i = 0; i < lines.size(); i++)
        {
                fep_reply  fepReply;
                cout << "Sending fepReply for line #" << lines.at(i).lineNum << endl;
                // populate reply
                fepReply.reply = SHORTPOLL;
                fepReply.schedule = lines.at(i).schedule;
                fepReply.lineinfo = lines.at(i).lineInfo;
                fepReply.kind = (enum polltype) 0;
                fepReply.flag = (enum replykind) 0;

                /***********************************
                         This is an update to an extern, this should happen on the Java driver side??
                lines.at(i).schedleSeq += 1;
                lines.at(i).globalSeq += 51;
                */

                fepReply.schedule_sequence = lines.at(i).schedleSeq;
                fepReply.global_sequence = lines.at(i).globalSeq;
                /************************************
                         Need to find out what appropriate schedule time is: look at uci_unix_simulation_time src code
                fepReply.schedule_time =
                        uci_unix_simulation_time(uci_simulation_time());        // GMT time
                */
                fepReply.schedule_time = time(NULL);

                fepReply.user_info1 = lines.at(i).lineNum;
                fepReply.user_info2 = lines.at(i).lineNum;
                fepReply.system_key = lines.at(i).systemKey;

                fepReply.answers.size = 1;
                fepReply.answers.fep_answer_list_u.shortp.count = 1;

                /* for each LDS in the Line.... (constructs the short_answer message) */
                for (j = 0; j < lines.at(i).ldsNum; j++)
                {
                    cout << "Station num " << j << endl;
                        fep_shortanswer fsa;
                        int index = lines.at(i).ldsIndex[j];

                        // msg: oa, od, ldsMap.at(index).dataPack, od, ff
                        fsa.msg.message_len = ldsMap.at(index).length + 2;
                        fsa.msg.message[0] = 0x0d;
                        fsa.msg.message[1] = 0x0a;
                        for (int k = 0; k < ldsMap.at(index).length; k++)
                                fsa.msg.message[2 + k]  = ldsMap.at(index).dataPack[k];
                        int aa = ldsMap.at(index).length;
                        fsa.msg.message[2 + aa] = 0x0d;
                        fsa.msg.message[3 + aa] = 0xff; //????????????? warning ?????

                        // info
                        fsa.info.poll_error_count = 0;
                        /***************************************
                                 Need to find out polltime uci time function src code
                        fsa.info.poll_time = uci_unix_simulation_time(uci_simulation_time());
                        */
                        fsa.info.poll_user_info1 = ldsMap.at(index).drop;       // drop number
                        fsa.info.poll_user_info2 = 1;   //always 1
                        fsa.info.retries = 0;
                        fsa.info.status = (enum replystatus) 1;

                        //fepReply.answers.fep_answer_list_u.shortp.answers[j] = fsa;
                        fepReply.answers.fep_answer_list_u.shortp.answers[0] = fsa;

                        // send out data
                        printf("Transferring line=%d, lds_drop_no=%d...\n", lines.at(i).lineNum, ldsMap.at(index).drop);
                        rv = fep_reply_xfer_32(&fepReply, clnt);

                        /* Handle ATMS response to RPC Call */
                        printf("Handling ATMS response...\n");
                        handleCallResponse(rv);
                }
        }
}

/**
 * Creates the RPC Client. If not successful, exit with status 1.
 * @param host rpc server ip
 */
void FEPClient::createClient(char * host)
{
        /* Create RPC Client to communicate with ATMS */
        cout << "Creating RPC Client" << endl;
        clnt = clnt_create(host, 100090, /*103121,*/ 32, "tcp");
        cout << "Client created" << endl;
        /* Check if client creation failed */
        if (clnt == (CLIENT *) NULL)
        {
                cerr << "Can't create client to " << host << endl;
                exit(1);
        }
}

/**
 * Main driver for ATMSCommunicator. Creates an RPC Client from command line args.
 * @param argc
 * @param argv
 * @return 
 */
int main(int argc, char *argv[]) {

        char *host;
        char *networkFile;

        if (argc < 3)
        {
                cout << "usage:  " << argv[0] << " server_host networkFile" << endl;
                exit(1);
        }

        /* Create RPC Client to send an fep_reply to ATMS */
        host = argv[1];
        networkFile = argv[2];

        FEPClient *client = new FEPClient(host, networkFile);
        delete client;

        return 0;
}