1 | /*
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2 | * Project: JobMarket
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3 | * Description: asynchronous Server/Controller/Client-approach to parallel computing, based on boost::asio
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4 | * Copyright (C) 2010 Frederik Heber. All rights reserved.
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5 | *
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6 | */
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7 |
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8 | /*
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9 | * SyncOperation.cpp
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10 | *
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11 | * Created on: Mar 04, 2012
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12 | * Author: heber
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13 | */
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14 |
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15 |
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16 | // include config.h
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17 | #ifdef HAVE_CONFIG_H
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18 | #include <config.h>
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19 | #endif
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20 |
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21 | // boost asio needs specific operator new
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22 | #include <boost/asio.hpp>
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23 |
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24 | //#include "CodePatterns/MemDebug.hpp"
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25 |
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26 | #include "JobMarket/Operations/SyncOperation.hpp"
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27 |
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28 | #include <boost/bind.hpp>
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29 | #include <vector>
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30 | #include "JobMarket/Connection.hpp" // Must come before boost/serialization headers.
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31 | #include "CodePatterns/Info.hpp"
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32 | #include "CodePatterns/Log.hpp"
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33 |
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34 | /** Internal function to connect connection_.
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35 | *
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36 | */
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37 | void SyncOperation::connect(const std::string& _host, const std::string& _service)
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38 | {
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39 | // Resolve the host name into an IP address.
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40 | boost::asio::ip::tcp::resolver resolver(connection_.socket().get_io_service());
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41 | boost::asio::ip::tcp::resolver::query query(_host, _service);
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42 | boost::asio::ip::tcp::resolver::iterator endpoint_iterator =
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43 | resolver.resolve(query);
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44 | // check whether host could be resolved
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45 | if (endpoint_iterator != boost::asio::ip::tcp::resolver::iterator()) {
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46 | boost::asio::ip::tcp::endpoint endpoint = *endpoint_iterator;
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47 |
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48 | // Start an asynchronous connect operation.
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49 | LOG(3, "DEBUG: Connecting synchronously to endpoint " << endpoint << " ...");
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50 | boost::system::error_code ec;
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51 | connection_.socket().connect(endpoint, ec);
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52 | if (ec) {
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53 | ELOG(1, ec.message());
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54 | status = Operation::error;
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55 | }
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56 | } else {
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57 | status = Operation::error;
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58 | }
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59 | }
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60 |
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61 |
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62 | /** Internal function to disconnect connection_ correctly.
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63 | *
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64 | */
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65 | void SyncOperation::disconnect()
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66 | {
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67 | boost::system::error_code ec;
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68 | connection_.socket().close(ec);
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69 | if (ec) {
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70 | ELOG(1, ec.message());
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71 | status = Operation::error;
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72 | }
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73 | }
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74 |
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75 | /** Wrapper function for the virtual call to internal() that connects and disconnects.
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76 | *
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77 | * @param _host host address to connect to
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78 | * @param _service service to connect to
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79 | */
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80 | void SyncOperation::operator()(const std::string& _host, const std::string& _service)
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81 | {
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82 | DEBUG_FUNCTION_ENTRYEXIT
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83 |
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84 | status = Operation::running;
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85 |
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86 | // connect
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87 | connect(_host, _service);
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88 |
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89 | // call virtual function to continue
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90 | if (status == Operation::running)
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91 | internal();
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92 |
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93 | // disconnect
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94 | if (status == Operation::running)
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95 | disconnect();
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96 |
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97 | if (status == Operation::running)
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98 | status = Operation::success;
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99 | }
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