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2020-04-28 15:12:15 +02:00

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&#160;<span id="projectnumber">1.4.14</span>
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<div id="projectbrief">C++ Message Queuing Library and Framework</div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/********************************************************************************</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (C) 2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * *</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * This software is distributed under the terms of the *</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * GNU Lesser General Public Licence (LGPL) version 3, *</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * copied verbatim in the file &quot;LICENSE&quot; *</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> ********************************************************************************/</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#ifndef FAIR_MQ_PLUGINMANAGER_H</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#define FAIR_MQ_PLUGINMANAGER_H</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;fairmq/Plugin.h&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;fairmq/PluginServices.h&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;fairmq/tools/CppSTL.h&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;fairmq/tools/Strings.h&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#define BOOST_FILESYSTEM_VERSION 3</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define BOOST_FILESYSTEM_NO_DEPRECATED</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;boost/filesystem.hpp&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;boost/optional.hpp&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;boost/program_options.hpp&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;boost/dll/import.hpp&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;boost/dll/shared_library.hpp&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;boost/dll/runtime_symbol_info.hpp&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor">#include &lt;map&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &lt;stdexcept&gt;</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span> <span class="comment">// forward</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacefair.html">fair</a></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;{</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">namespace </span>mq</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;{</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classfair_1_1mq_1_1PluginManager.html"> 49</a></span>&#160;<span class="keyword">class </span><a class="code" href="classfair_1_1mq_1_1PluginManager.html">PluginManager</a></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;{</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">using</span> PluginFactory = std::unique_ptr&lt;fair::mq::Plugin&gt;(<a class="code" href="classfair_1_1mq_1_1PluginServices.html">PluginServices</a>&amp;);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <a class="code" href="classfair_1_1mq_1_1PluginManager.html">PluginManager</a>();</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; PluginManager(<span class="keyword">const</span> std::vector&lt;std::string&gt; args);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; ~PluginManager()</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; LOG(debug) &lt;&lt; <span class="stringliteral">&quot;Shutting down Plugin Manager&quot;</span>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">auto</span> SetSearchPaths(<span class="keyword">const</span> std::vector&lt;boost::filesystem::path&gt;&amp;) -&gt; void;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">auto</span> AppendSearchPath(<span class="keyword">const</span> boost::filesystem::path&amp;) -&gt; void;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">auto</span> PrependSearchPath(<span class="keyword">const</span> boost::filesystem::path&amp;) -&gt; void;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">auto</span> SearchPaths() <span class="keyword">const</span> -&gt; <span class="keyword">const</span> std::vector&lt;boost::filesystem::path&gt;&amp; { <span class="keywordflow">return</span> fSearchPaths; }</div><div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="structfair_1_1mq_1_1PluginManager_1_1BadSearchPath.html"> 66</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structfair_1_1mq_1_1PluginManager_1_1BadSearchPath.html">BadSearchPath</a> : std::invalid_argument { <span class="keyword">using</span> std::invalid_argument::invalid_argument; };</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">auto</span> LoadPlugin(<span class="keyword">const</span> std::string&amp; pluginName) -&gt; void;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keyword">auto</span> LoadPlugins(<span class="keyword">const</span> std::vector&lt;std::string&gt;&amp; pluginNames) -&gt; <span class="keywordtype">void</span> { <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span>&amp; pluginName : pluginNames) { LoadPlugin(pluginName); } }</div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="structfair_1_1mq_1_1PluginManager_1_1PluginLoadError.html"> 70</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structfair_1_1mq_1_1PluginManager_1_1PluginLoadError.html">PluginLoadError</a> : std::runtime_error { <span class="keyword">using</span> std::runtime_error::runtime_error; };</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keyword">auto</span> InstantiatePlugins() -&gt; void;</div><div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="structfair_1_1mq_1_1PluginManager_1_1PluginInstantiationError.html"> 72</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structfair_1_1mq_1_1PluginManager_1_1PluginInstantiationError.html">PluginInstantiationError</a> : std::runtime_error { <span class="keyword">using</span> std::runtime_error::runtime_error; };</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">static</span> <span class="keyword">auto</span> ProgramOptions() -&gt; boost::program_options::options_description;</div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="structfair_1_1mq_1_1PluginManager_1_1ProgramOptionsParseError.html"> 75</a></span>&#160; <span class="keyword">struct </span><a class="code" href="structfair_1_1mq_1_1PluginManager_1_1ProgramOptionsParseError.html">ProgramOptionsParseError</a> : std::runtime_error { <span class="keyword">using</span> std::runtime_error::runtime_error; };</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keyword">static</span> <span class="keyword">auto</span> LibPrefix() -&gt; <span class="keyword">const</span> std::string&amp; { <span class="keywordflow">return</span> fgkLibPrefix; }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">auto</span> ForEachPlugin(std::function&lt;<span class="keywordtype">void</span> (<a class="code" href="classfair_1_1mq_1_1Plugin.html">Plugin</a>&amp;)&gt; func) -&gt; <span class="keywordtype">void</span> { <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span>&amp; p : fPluginOrder) { func(*fPlugins[p]); } }</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keyword">auto</span> ForEachPluginProgOptions(std::function&lt;<span class="keywordtype">void</span> (boost::program_options::options_description)&gt; func) <span class="keyword">const</span> -&gt; <span class="keywordtype">void</span> { <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span>&amp; pair : fPluginProgOptions) { func(pair.second); } }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keyword">auto</span> EmplacePluginServices(Args&amp;&amp;... args) -&gt; <span class="keywordtype">void</span> { fPluginServices = fair::mq::tools::make_unique&lt;PluginServices&gt;(std::forward&lt;Args&gt;(args)...); }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keyword">auto</span> WaitForPluginsToReleaseDeviceControl() -&gt; <span class="keywordtype">void</span> { fPluginServices-&gt;WaitForReleaseDeviceControl(); }</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keyword">static</span> <span class="keyword">auto</span> ValidateSearchPath(<span class="keyword">const</span> boost::filesystem::path&amp;) -&gt; void;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keyword">auto</span> LoadPluginPrelinkedDynamic(<span class="keyword">const</span> std::string&amp; pluginName) -&gt; void;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keyword">auto</span> LoadPluginDynamic(<span class="keyword">const</span> std::string&amp; pluginName) -&gt; void;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keyword">auto</span> LoadPluginStatic(<span class="keyword">const</span> std::string&amp; pluginName) -&gt; void;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span>... Args&gt;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">auto</span> LoadSymbols(<span class="keyword">const</span> std::string&amp; pluginName, Args&amp;&amp;... args) -&gt; <span class="keywordtype">void</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; {</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keyword">using namespace </span>boost::dll;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keyword">using</span> fair::mq::tools::ToString;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keyword">auto</span> lib = shared_library{std::forward&lt;Args&gt;(args)...};</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; fgDLLKeepAlive.push_back(lib);</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; fPluginFactories[pluginName] = import_alias&lt;PluginFactory&gt;(</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; shared_library{lib},</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; ToString(<span class="stringliteral">&quot;make_&quot;</span>, pluginName, <span class="stringliteral">&quot;_plugin&quot;</span>)</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; );</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">try</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; fPluginProgOptions.insert({</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; pluginName,</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; lib.get_alias&lt;Plugin::ProgOptions()&gt;(ToString(<span class="stringliteral">&quot;get_&quot;</span>, pluginName, <span class="stringliteral">&quot;_plugin_progoptions&quot;</span>))().value()</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; });</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordflow">catch</span> (<span class="keyword">const</span> boost::bad_optional_access&amp; e) { <span class="comment">/* just ignore, if no prog options are declared */</span> }</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; }</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keyword">auto</span> InstantiatePlugin(<span class="keyword">const</span> std::string&amp; pluginName) -&gt; void;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> std::string fgkLibPrefix;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; std::vector&lt;boost::filesystem::path&gt; fSearchPaths;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keyword">static</span> std::vector&lt;boost::dll::shared_library&gt; fgDLLKeepAlive;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; std::map&lt;std::string, std::function&lt;PluginFactory&gt;&gt; fPluginFactories;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; std::unique_ptr&lt;PluginServices&gt; fPluginServices;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; std::map&lt;std::string, std::unique_ptr&lt;Plugin&gt;&gt; fPlugins;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; std::vector&lt;std::string&gt; fPluginOrder;</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; std::map&lt;std::string, boost::program_options::options_description&gt; fPluginProgOptions;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;}; <span class="comment">/* class PluginManager */</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;} <span class="comment">/* namespace mq */</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;} <span class="comment">/* namespace fair */</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* FAIR_MQ_PLUGINMANAGER_H */</span><span class="preprocessor"></span></div><div class="ttc" id="classfair_1_1mq_1_1PluginServices_html"><div class="ttname"><a href="classfair_1_1mq_1_1PluginServices.html">fair::mq::PluginServices</a></div><div class="ttdoc">Facilitates communication between devices and plugins. </div><div class="ttdef"><b>Definition:</b> PluginServices.h:40</div></div>
<div class="ttc" id="structfair_1_1mq_1_1PluginManager_1_1PluginInstantiationError_html"><div class="ttname"><a href="structfair_1_1mq_1_1PluginManager_1_1PluginInstantiationError.html">fair::mq::PluginManager::PluginInstantiationError</a></div><div class="ttdef"><b>Definition:</b> PluginManager.h:72</div></div>
<div class="ttc" id="structfair_1_1mq_1_1PluginManager_1_1BadSearchPath_html"><div class="ttname"><a href="structfair_1_1mq_1_1PluginManager_1_1BadSearchPath.html">fair::mq::PluginManager::BadSearchPath</a></div><div class="ttdef"><b>Definition:</b> PluginManager.h:66</div></div>
<div class="ttc" id="classfair_1_1mq_1_1PluginManager_html"><div class="ttname"><a href="classfair_1_1mq_1_1PluginManager.html">fair::mq::PluginManager</a></div><div class="ttdoc">manages and owns plugin instances </div><div class="ttdef"><b>Definition:</b> PluginManager.h:49</div></div>
<div class="ttc" id="classfair_1_1mq_1_1Plugin_html"><div class="ttname"><a href="classfair_1_1mq_1_1Plugin.html">fair::mq::Plugin</a></div><div class="ttdoc">Base class for FairMQ plugins. </div><div class="ttdef"><b>Definition:</b> Plugin.h:39</div></div>
<div class="ttc" id="structfair_1_1mq_1_1PluginManager_1_1PluginLoadError_html"><div class="ttname"><a href="structfair_1_1mq_1_1PluginManager_1_1PluginLoadError.html">fair::mq::PluginManager::PluginLoadError</a></div><div class="ttdef"><b>Definition:</b> PluginManager.h:70</div></div>
<div class="ttc" id="namespacefair_html"><div class="ttname"><a href="namespacefair.html">fair</a></div><div class="ttdoc">Tools for interfacing containers to the transport via polymorphic allocators. </div><div class="ttdef"><b>Definition:</b> DeviceRunner.h:23</div></div>
<div class="ttc" id="structfair_1_1mq_1_1PluginManager_1_1ProgramOptionsParseError_html"><div class="ttname"><a href="structfair_1_1mq_1_1PluginManager_1_1ProgramOptionsParseError.html">fair::mq::PluginManager::ProgramOptionsParseError</a></div><div class="ttdef"><b>Definition:</b> PluginManager.h:75</div></div>
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