Repository: mesos-site Updated Branches: refs/heads/asf-site 29af84836 -> 18a865743
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/18a86574/content/api/latest/c++/grpc_8hpp_source.html ---------------------------------------------------------------------- diff --git a/content/api/latest/c++/grpc_8hpp_source.html b/content/api/latest/c++/grpc_8hpp_source.html index 7dbdaec..e70e37d 100644 --- a/content/api/latest/c++/grpc_8hpp_source.html +++ b/content/api/latest/c++/grpc_8hpp_source.html @@ -52,7 +52,7 @@ <div class="title">grpc.hpp</div> </div> </div><!--header--> <div class="contents"> -<a href="grpc_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span ></div><div class="line"><a name="l00007"></a><span class="lineno"> >7</span> <span class="comment">// Unless required by applicable law or >agreed to in writing, software</span></div><div class="line"><a >name="l00008"></a><span class="lineno"> 8</span> <span >class="comment">// distributed under the License is distributed on an >"AS IS" BASIS,</span></div><div class="line"><a >name="l00009"></a><span class="lineno"> 9</span> <span >class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either >express or implied.</span></div><div class="line"><a name="l00010"></a><span >class="lineno"> 10</span> <span class="comment">// See the License for >the specific language governing permissions and</span></div><div >class="line"><a name="l00011"></a><span class="lineno"> >11</span> <span class="comment">// limitations under the >License</span></div><div class="line"><a name="l00012"></a><span >class="lineno"> 12</span> </div><div class="line "><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __PROCESS_GRPC_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __PROCESS_GRPC_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <chrono></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <thread></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>& #160;<span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <google/protobuf/message.h></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <grpcpp/grpcpp.h></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="libprocess_2include_2process_2check_8hpp.html">process/check.hpp</a>></span>< /div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="code" href="dispatch_8hpp.html">process/dispatch.hpp</a>></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="future_8hpp.html">process/future.hpp</a>></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2libprocess_2include_2process_2pid_8hpp.html">process/pid.hpp</a>></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="libprocess_2include_2process_2process_8hpp.html">process/process.hpp</a>></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class ="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="duration_8hpp.html">stout/duration.hpp</a>></span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="error_8hpp.html">stout/error.hpp</a>></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="lambda_8hpp.html">stout/lambda.hpp</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="nothing_8hpp.html">stout/nothing.hpp</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&# 160;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// This file provides libprocess "support" for using gRPC. In particular, it</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// defines two wrapper classes: `client::Connection` which represents a</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// connection to a gRPC server, and `client::Runtime` which integrates an event</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// loop waiting for gRPC responses and provides the `call` interface to create</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// an asynchronous gRPC call and retu rn a `Future`.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="grpc_8hpp.html#af26d5c763831ad955bb9742db25c5f75"> 47</a></span> <span class="preprocessor">#define GRPC_CLIENT_METHOD(service, rpc) \</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"> (&service::Stub::PrepareAsync##rpc)</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">namespace </span><a class="code" href="namespaceprocess.html">process</a> {</div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc.html"> 51</a></span> <span c lass="keyword">namespace </span>grpc {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html"> 57</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1StatusError.html">StatusError</a> : <span class="keyword">public</span> <a class="code" href="classError.html">Error</a></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html#af8b12349660968c3171d71d48d82111b"> 60</a></span>  <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#af8b12349660968c3171d71d48d82111b">StatusError</a>(::grpc::Status _status)</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  : <a class="code" href="classError.html">Error</a>(_status.error_message()), <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>(<a class="code" href="namespacestd.html">std</a>::move(_status))</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  CHECK(!<a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>.ok());</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5"> 66</a></span> 60; const ::grpc::Status <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> };</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc_1_1client.html"> 70</a></span> <span class="keyword">namespace </span>client {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// Internal helper utilities.</span></div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc_1_1client_1_1internal.html"> 73</a></span> <span class="keyword" >namespace </span><a class="code" href="namespaceinternal.html">internal</a> >{</div><div class="line"><a name="l00074"></a><span class="lineno"> >74</span> </div><div class="line"><a name="l00075"></a><span >class="lineno"> 75</span> <span class="keyword">template</span> ><<span class="keyword">typename</span> T></div><div class="line"><a >name="l00076"></a><span class="lineno"><a class="line" >href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html"> >76</a></span> <span class="keyword">struct </span><a class="code" >href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">MethodTraits</a>; > <span class="comment">// Undefined.</span></div><div class="line"><a >name="l00077"></a><span class="lineno"> 77</span> </div><div >class="line"><a name="l00078"></a><span class="lineno"> >78</span> </div><div class="line"><a name="l00079"></a><span >class="lineno"> 79</span> <span class="keyword">template</span> ><<span class= "keyword">typename</span> Stub, <span class="keyword">typename</span> Request, <span class="keyword">typename</span> Response></div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html"> 80</a></span> <span class="keyword">struct </span><a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">MethodTraits</a><</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="namespacestd.html">std</a>::unique_ptr<::grpc::ClientAsyncResponseReader<Response>>(Stub::*)(</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  ::grpc::ClientContext*,</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  const Request&,</div><div class="line"><a name="l0008 4"></a><span class="lineno"> 84</span>  ::grpc::CompletionQueue*)></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> {</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#af96bd68c2ee624f2bade6bb587726897"> 86</a></span>  <span class="keyword">typedef</span> Stub <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#af96bd68c2ee624f2bade6bb587726897">stub_type</a>;</div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#adcf2f58a91926bbfbbf3f9aa4979cd38"> 87</a></span>  <span class="keyword ">typedef</span> Request <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#adcf2f58a91926bbfbbf3f9aa4979cd38">request_type</a>;</div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#a39b26e8b5b508708af0b6468a31dcab5"> 88</a></span>  <span class="keyword">typedef</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#a39b26e8b5b508708af0b6468a31dcab5">response_type</a>;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> };</div><div class="lin e"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> } <span class="comment">// namespace internal {</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html"> 100</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html">Connection</a></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a6 0863492f258db095f4ce19c45d4fed5"> 103</a></span>  <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a60863492f258db095f4ce19c45d4fed5">Connection</a>(</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> std::string& <a class="code" href="namespaceuri.html">uri</a>,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> std::shared_ptr<::grpc::ChannelCredentials>& credentials =</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  ::grpc::InsecureChannelCredentials())</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  : channel(::grpc::CreateChannel(uri, credentials)) {}</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line " href="classprocess_1_1grpc_1_1client_1_1Connection.html#abe61ce221a6e43836ea28d97e6b2db94"> 109</a></span>  <span class="keyword">explicit</span> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#abe61ce221a6e43836ea28d97e6b2db94">Connection</a>(std::shared_ptr<::grpc::Channel> _channel)</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  : channel(<a class="code" href="namespacestd.html">std</a>::move(_channel)) {}</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8"> 112</a></span>  <span class="keyword">const</span> std::shared_ptr<::grpc::Channel> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8">channel</a>;</div><div class="line"><a name= "l00113"></a><span class="lineno"> 113</span> };</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html"> 119</a></span> <span class="keyword">struct </span><a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html">CallOptions</a></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> {</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// Enable the gRPC wait-for-ready semantics by default so the call will be</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// retried if the connection is not ready. See:</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md</span></div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#a8cf84ee4daef6097b153f5d0aa8150c0"> 124</a></span>  <span class="keywordtype">bool</span> wait_for_ready = <span class="keyword">true</span>;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// The timeout of the call. A `DEADLINE_EXCEEDED` status will be returned if</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// there is no response in the specified amount of time. This is required to</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// av oid the call from being pending forever.</span></div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#ad20c38ae483b90d87ecb089c3973e27f"> 129</a></span>  <a class="code" href="classDuration.html">Duration</a> timeout = <a class="code" href="classSeconds.html">Seconds</a>(60);</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> };</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html"> 145</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1client_1_1Runtime.html">Runtime</a></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> {</div><div class ="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#a5f7e56d9ebb540a9dbc52c5fb816a024"> 148</a></span>  <a class="code" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#a5f7e56d9ebb540a9dbc52c5fb816a024">Runtime</a>() : data(new Data()) {}</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span> <</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">typename</span> Method,</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">typename</span> Request =</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</spa n>  <span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::request_type</a>,</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a> =</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::response_type</a>,</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">typename</span> std::enable_if<</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  std::is_convertible<</di v><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay<Request>::type</a>*,</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  google::protobuf::Message*>::value,</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordtype">int</span>><a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a> = 0></div><div class="line"><a name="l00177"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#ab3f24083653cba75b9bd419f0a4df852"> 177</a></span>  <a class="code" href="classprocess_1_1Future.html">Future<Try<Response, StatusError></a>> <a class="code" href="classprocess_1_1grpc_1_1client_1 _1Runtime.html#ab3f24083653cba75b9bd419f0a4df852">call</a>(</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">const</span> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html">Connection</a>& connection,</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  Method&& method,</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  Request&& <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>,</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">const</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html">CallOptions</a>& options)</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183< /span>  <span class="comment">// Create a `Promise` that will be set upon receiving a response.</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// TODO(chhsiao): The `Promise` in the `shared_ptr` is not shared, but only</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// to be captured by the lambda below. Use a `unique_ptr` once we get C++14.</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  std::shared_ptr<Promise<Try<Response, StatusError>>> <a class="code" href="namespacemesos_1_1internal_1_1log_1_1protocol.html#a3b1f8bd7b18c51af9d1f58842950b545">promise</a>(</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">new</span> <a class="code" href="classprocess_1_1Promise.html">Promise</a><<a class="code" href="classTry. html">Try<Response, StatusError></a>>);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="classprocess_1_1Future.html">Future<Try<Response, StatusError></a>> future = promise->future();</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// Send the request in the internal runtime process.</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// TODO(chhsiao): We use `std::bind` here to forward `request` to avoid an</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// extra copy. We should capture it by forwarding once we get C++14.</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="co de" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(data->pid, &<a class="code" href="namespaceprocess_1_1windows.html#a04c64346155d34517acdf8b587162868">RuntimeProcess::send</a>, <a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">std::bind</a>(</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  [connection, method, options, promise](</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">const</span> Request& <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>,</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">bool</span> terminating,</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  ::grpc::CompletionQueue* queue) {</div><div class="line"><a na me="l00198"></a><span class="lineno"> 198</span>  if (terminating) {</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  promise->fail(<span class="stringliteral">"Runtime has been terminated"</span>);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  return;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// TODO(chhsiao): The `shared_ptr`s here aren't shared, but only to be</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// captured by the lambda below. Use `unique_ptr`s once we get C++14.</span></div><div class="line"><a name="l00205"></a><span cla ss="lineno"> 205</span>  std::shared_ptr<::grpc::ClientContext> <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>(</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  new ::grpc::ClientContext());</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>->set_wait_for_ready(options.<a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#a8cf84ee4daef6097b153f5d0aa8150c0">wait_for_ready</a>);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="namespaceprocess_1_1n etwork_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>->set_deadline(</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  std::chrono::system_clock::now() +</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  std::chrono::nanoseconds(options.<a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#ad20c38ae483b90d87ecb089c3973e27f">timeout</a>.<a class="code" href="classDuration.html#aa3703196ba3797f7833a8348ccb5449a">ns</a>()));</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  promise->future().onDiscard([=] { <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>->TryCancel(); });</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>< div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  std::shared_ptr<Response> response(<span class="keyword">new</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a>());</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  std::shared_ptr<::grpc::Status> <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>(new ::grpc::Status());</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  std::shared_ptr<::grpc::ClientAsyncResponseReader<Response>> reader =</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  (<span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_ 1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::stub_type</a>(</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  connection.<a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8">channel</a>).*method)(<a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>.get(), <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>, queue);</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  reader->StartCall();</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">// Create a `ReceiveCallback` as a tag in the `CompletionQueue` for</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// the current asynchronous gRPC call. The callback will set up the</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// above `Promise` upon receiving a response.</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// NOTE: `context` and `reader` need to be held on in order to get</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// updates for the ongoing RPC, and thus are captured here. The</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// callback itself will later be retrieved and managed in the</span></div><div class="line"><a name="l00231"> </a><span class="lineno"> 231</span>  <span class="comment">// looper thread.</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordtype">void</span>* tag = <span class="keyword">new</span> <a class="code" href="classlambda_1_1CallableOnce.html">ReceiveCallback</a>(</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  [<a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>, reader, response, status, promise]() {</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <a class="code" href="libprocess_2include_2process_2check_8hpp.html#a3e2ba5c8589f7f5799251a12409e142c">CHECK_PENDING</a>(promise->future());</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (promise->future( ).hasDiscard()) {</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  promise->discard();</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  promise->set(status->ok()</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  ? std::move(*response)</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  : <a class="code" href="classTry.html#abb21343eabcba0eb0d88f13c4fbdf1f7">Try<Response, StatusError>::error</a>(std::move(*status)));</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  });</div><div c lass="line"><a name="l00243"></a><span class="lineno"> 243</span> </div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  reader->Finish(response.get(), status.get(), tag);</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  },</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  std::forward<Request>(<a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>),</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  lambda::_1,</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  lambda::_2));</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">return</span> future;</div><div class="line"><a name="l002 51"></a><span class="lineno"> 251</span>  }</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a20443908afa3212215166e26065349e5">terminate</a>();</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <a class="code" href="classprocess_1_1Future.html">Future<Nothing></a> <a class="code" href="namespaceprocess.html#a07833fb41a8b0c1f18fa5485ca8c18d4">wait</a>();</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="com ment">// Type of the callback functions that can get invoked when sending a request</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// or receiving a response.</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a><</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  void(<span class="keywordtype">bool</span>, ::grpc::CompletionQueue*)> <a class="code" href="classlambda_1_1CallableOnce.html">SendCallback</a>;</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce<void()></a> <a class="code" href="classlambda_1_1CallableOnce.html">ReceiveCallback</a>;</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">class </span>RuntimeProcess : <span class="keyword">public</span> <a class="code" href="classprocess_1_1Process.html">Process</a><RuntimeProcess></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  {</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  RuntimeProcess();</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  ~RuntimeProcess() <span class="keyword">override</span>;</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordtype">void</span> <a class="cod e" href="namespaceprocess_1_1windows.html#a04c64346155d34517acdf8b587162868">send</a>(SendCallback callback);</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordtype">void</span> receive(ReceiveCallback callback);</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a20443908afa3212215166e26065349e5">terminate</a>();</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <a class="code" href="classprocess_1_1Future.html">Future<Nothing></a> <a class="code" href="namespaceprocess.html#a07833fb41a8b0c1f18fa5485ca8c18d4">wait</a>();</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00286"></a> <span class="lineno"> 286</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a6c9cd01950a98038b2a6df3e5066418f">initialize</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a238371634a6637198c58ea740b0890ca">finalize</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a>();</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  ::grpc::CompletionQueue queue;</div><div class="line "><a name="l00292"></a><span class="lineno"> 292</span>  std::unique_ptr<std::thread> looper;</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordtype">bool</span> terminating;</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <a class="code" href="classprocess_1_1Promise.html">Promise<Nothing></a> terminated;</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  };</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keyword">struct </span>Data</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  {</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  Data();</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  ~Da ta();</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <a class="code" href="structprocess_1_1PID.html">PID<RuntimeProcess></a> pid;</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <a class="code" href="classprocess_1_1Future.html">Future<Nothing></a> terminated;</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  };</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  std::shared_ptr<Data> data;</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> };</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> } <span class= "comment">// namespace client {</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> } <span class="comment">// namespace grpc {</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> } <span class="comment">// namespace process {</span></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="preprocessor">#endif // __PROCESS_GRPC_HPP__</span></div><div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:36</div></div> +<a href="grpc_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span ></div><div class="line"><a name="l00007"></a><span class="lineno"> >7</span> <span class="comment">// Unless required by applicable law or >agreed to in writing, software</span></div><div class="line"><a >name="l00008"></a><span class="lineno"> 8</span> <span >class="comment">// distributed under the License is distributed on an >"AS IS" BASIS,</span></div><div class="line"><a >name="l00009"></a><span class="lineno"> 9</span> <span >class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either >express or implied.</span></div><div class="line"><a name="l00010"></a><span >class="lineno"> 10</span> <span class="comment">// See the License for >the specific language governing permissions and</span></div><div >class="line"><a name="l00011"></a><span class="lineno"> >11</span> <span class="comment">// limitations under the >License</span></div><div class="line"><a name="l00012"></a><span >class="lineno"> 12</span> </div><div class="line "><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __PROCESS_GRPC_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __PROCESS_GRPC_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <chrono></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <thread></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>& #160;<span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <google/protobuf/message.h></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <grpcpp/grpcpp.h></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <<a class="code" href="libprocess_2include_2process_2check_8hpp.html">process/check.hpp</a>></span>< /div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <<a class="code" href="dispatch_8hpp.html">process/dispatch.hpp</a>></span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="future_8hpp.html">process/future.hpp</a>></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2libprocess_2include_2process_2pid_8hpp.html">process/pid.hpp</a>></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="libprocess_2include_2process_2process_8hpp.html">process/process.hpp</a>></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class ="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="duration_8hpp.html">stout/duration.hpp</a>></span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="error_8hpp.html">stout/error.hpp</a>></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="lambda_8hpp.html">stout/lambda.hpp</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="nothing_8hpp.html">stout/nothing.hpp</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/try.hpp</a>></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&# 160;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// This file provides libprocess "support" for using gRPC. In particular, it</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// defines two wrapper classes: `client::Connection` which represents a</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// connection to a gRPC server, and `client::Runtime` which integrates an event</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// loop waiting for gRPC responses and provides the `call` interface to create</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// an asynchronous gRPC call and retu rn a `Future`.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="grpc_8hpp.html#af26d5c763831ad955bb9742db25c5f75"> 47</a></span> <span class="preprocessor">#define GRPC_CLIENT_METHOD(service, rpc) \</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"> (&service::Stub::PrepareAsync##rpc)</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">namespace </span><a class="code" href="namespaceprocess.html">process</a> {</div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc.html"> 51</a></span> <span c lass="keyword">namespace </span>grpc {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html"> 57</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1StatusError.html">StatusError</a> : <span class="keyword">public</span> <a class="code" href="classError.html">Error</a></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html#af8b12349660968c3171d71d48d82111b"> 60</a></span>  <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#af8b12349660968c3171d71d48d82111b">StatusError</a>(::grpc::Status _status)</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  : <a class="code" href="classError.html">Error</a>(_status.error_message()), <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>(<a class="code" href="namespacestd.html">std</a>::move(_status))</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  CHECK(!<a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>.ok());</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5"> 66</a></span> 60; const ::grpc::Status <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> };</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc_1_1client.html"> 70</a></span> <span class="keyword">namespace </span>client {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// Internal helper utilities.</span></div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="namespaceprocess_1_1grpc_1_1client_1_1internal.html"> 73</a></span> <span class="keyword" >namespace </span><a class="code" href="namespaceinternal.html">internal</a> >{</div><div class="line"><a name="l00074"></a><span class="lineno"> >74</span> </div><div class="line"><a name="l00075"></a><span >class="lineno"> 75</span> <span class="keyword">template</span> ><<span class="keyword">typename</span> T></div><div class="line"><a >name="l00076"></a><span class="lineno"><a class="line" >href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html"> >76</a></span> <span class="keyword">struct </span><a class="code" >href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">MethodTraits</a>; > <span class="comment">// Undefined.</span></div><div class="line"><a >name="l00077"></a><span class="lineno"> 77</span> </div><div >class="line"><a name="l00078"></a><span class="lineno"> >78</span> </div><div class="line"><a name="l00079"></a><span >class="lineno"> 79</span> <span class="keyword">template</span> ><<span class= "keyword">typename</span> Stub, <span class="keyword">typename</span> Request, <span class="keyword">typename</span> Response></div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html"> 80</a></span> <span class="keyword">struct </span><a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">MethodTraits</a><</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="namespacestd.html">std</a>::unique_ptr<::grpc::ClientAsyncResponseReader<Response>>(Stub::*)(</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  ::grpc::ClientContext*,</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  const Request&,</div><div class="line"><a name="l0008 4"></a><span class="lineno"> 84</span>  ::grpc::CompletionQueue*)></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> {</div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#af96bd68c2ee624f2bade6bb587726897"> 86</a></span>  <span class="keyword">typedef</span> Stub <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#af96bd68c2ee624f2bade6bb587726897">stub_type</a>;</div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#adcf2f58a91926bbfbbf3f9aa4979cd38"> 87</a></span>  <span class="keyword ">typedef</span> Request <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#adcf2f58a91926bbfbbf3f9aa4979cd38">request_type</a>;</div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#a39b26e8b5b508708af0b6468a31dcab5"> 88</a></span>  <span class="keyword">typedef</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits_3_01std_1_1unique__ptr_3_1_1grpc_1_1b922a69900827d65b241714130bc07ca.html#a39b26e8b5b508708af0b6468a31dcab5">response_type</a>;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> };</div><div class="lin e"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> } <span class="comment">// namespace internal {</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html"> 100</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html">Connection</a></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a6 0863492f258db095f4ce19c45d4fed5"> 103</a></span>  <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a60863492f258db095f4ce19c45d4fed5">Connection</a>(</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> std::string& <a class="code" href="namespaceuri.html">uri</a>,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> std::shared_ptr<::grpc::ChannelCredentials>& credentials =</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  ::grpc::InsecureChannelCredentials())</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  : channel(::grpc::CreateChannel(uri, credentials)) {}</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line " href="classprocess_1_1grpc_1_1client_1_1Connection.html#abe61ce221a6e43836ea28d97e6b2db94"> 109</a></span>  <span class="keyword">explicit</span> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#abe61ce221a6e43836ea28d97e6b2db94">Connection</a>(std::shared_ptr<::grpc::Channel> _channel)</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  : channel(<a class="code" href="namespacestd.html">std</a>::move(_channel)) {}</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8"> 112</a></span>  <span class="keyword">const</span> std::shared_ptr<::grpc::Channel> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8">channel</a>;</div><div class="line"><a name= "l00113"></a><span class="lineno"> 113</span> };</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html"> 119</a></span> <span class="keyword">struct </span><a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html">CallOptions</a></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> {</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// Enable the gRPC wait-for-ready semantics by default so the call will be</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// retried if the connection is not ready. See:</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md</span></div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#a8cf84ee4daef6097b153f5d0aa8150c0"> 124</a></span>  <span class="keywordtype">bool</span> wait_for_ready = <span class="keyword">true</span>;</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// The timeout of the call. A `DEADLINE_EXCEEDED` status will be returned if</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// there is no response in the specified amount of time. This is required to</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// av oid the call from being pending forever.</span></div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#ad20c38ae483b90d87ecb089c3973e27f"> 129</a></span>  <a class="code" href="classDuration.html">Duration</a> timeout = <a class="code" href="classSeconds.html">Seconds</a>(60);</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> };</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html"> 145</a></span> <span class="keyword">class </span><a class="code" href="classprocess_1_1grpc_1_1client_1_1Runtime.html">Runtime</a></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> {</div><div class ="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#a5f7e56d9ebb540a9dbc52c5fb816a024"> 148</a></span>  <a class="code" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#a5f7e56d9ebb540a9dbc52c5fb816a024">Runtime</a>() : data(new Data()) {}</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span> <</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">typename</span> Method,</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">typename</span> Request =</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</spa n>  <span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::request_type</a>,</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a> =</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::response_type</a>,</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">typename</span> std::enable_if<</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  std::is_convertible<</di v><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">typename</span> <a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">std::decay<Request>::type</a>*,</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  google::protobuf::Message*>::value,</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordtype">int</span>><a class="code" href="namespacemesos_1_1internal_1_1fs.html#a2343e2642db514496ba8380776487fba">::type</a> = 0></div><div class="line"><a name="l00177"></a><span class="lineno"><a class="line" href="classprocess_1_1grpc_1_1client_1_1Runtime.html#ab3f24083653cba75b9bd419f0a4df852"> 177</a></span>  <a class="code" href="classprocess_1_1Future.html">Future<Try<Response, StatusError></a>> <a class="code" href="classprocess_1_1grpc_1_1client_1 _1Runtime.html#ab3f24083653cba75b9bd419f0a4df852">call</a>(</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">const</span> <a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html">Connection</a>& connection,</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  Method&& method,</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  Request&& <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>,</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">const</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html">CallOptions</a>& options)</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183< /span>  <span class="comment">// Create a `Promise` that will be set upon receiving a response.</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// TODO(chhsiao): The `Promise` in the `shared_ptr` is not shared, but only</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// to be captured by the lambda below. Use a `unique_ptr` once we get C++14.</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  std::shared_ptr<Promise<Try<Response, StatusError>>> <a class="code" href="namespacemesos_1_1internal_1_1log_1_1protocol.html#a3b1f8bd7b18c51af9d1f58842950b545">promise</a>(</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">new</span> <a class="code" href="classprocess_1_1Promise.html">Promise</a><<a class="code" href="classTry. html">Try<Response, StatusError></a>>);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="classprocess_1_1Future.html">Future<Try<Response, StatusError></a>> future = promise->future();</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// Send the request in the internal runtime process.</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// TODO(chhsiao): We use `std::bind` here to forward `request` to avoid an</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// extra copy. We should capture it by forwarding once we get C++14.</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="co de" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">dispatch</a>(data->pid, &<a class="code" href="namespaceprocess_1_1windows.html#a04c64346155d34517acdf8b587162868">RuntimeProcess::send</a>, <a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">std::bind</a>(</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  [connection, method, options, promise](</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">const</span> Request& <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>,</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">bool</span> terminating,</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  ::grpc::CompletionQueue* queue) {</div><div class="line"><a na me="l00198"></a><span class="lineno"> 198</span>  if (terminating) {</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  promise->fail(<span class="stringliteral">"Runtime has been terminated"</span>);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  return;</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// TODO(chhsiao): The `shared_ptr`s here aren't shared, but only to be</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// captured by the lambda below. Use `unique_ptr`s once we get C++14.</span></div><div class="line"><a name="l00205"></a><span cla ss="lineno"> 205</span>  std::shared_ptr<::grpc::ClientContext> <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>(</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  new ::grpc::ClientContext());</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>->set_wait_for_ready(options.<a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#a8cf84ee4daef6097b153f5d0aa8150c0">wait_for_ready</a>);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">// We need to ensure that we're using a</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="comment">// `std::chrono::system_clock::time_point` because `grpc::TimePoint`</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment">// provides a specialization only for this type and we cannot</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment">// guarantee that the operation below will always result in this type.</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">auto</span> time_point =</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  std::chrono::time_point_cast<std::chrono::system_clock::duration>(</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  std::chrono::system_clock::now() +</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  std::chrono::nanoseconds(options.<a class="code" href="structprocess_1_1grpc_1_1client_1_1CallOptions.html#ad20c38ae483b90d87ecb089c3973e27f">timeout</a>.<a class="code" href="classDuration.html#aa3703196ba3797f7833a8348ccb5449a">ns</a>()));</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>->set_deadline(time_point);</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  promise->future().onDiscard([=] { <a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9 731d6fb4e4a0d80a7c56">context</a>->TryCancel(); });</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  std::shared_ptr<Response> response(<span class="keyword">new</span> <a class="code" href="namespacemesos_1_1internal_1_1tests_1_1v1_1_1scheduler.html#a4e7892daaddcb4dd2e4ebb1266715316">Response</a>());</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  std::shared_ptr<::grpc::Status> <a class="code" href="classprocess_1_1grpc_1_1StatusError.html#a7182af947b263c08393be3c9420199b5">status</a>(new ::grpc::Status());</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  std::shared_ptr<::grpc::ClientAsyncResponseReader<Response>> reader =</div><div class="line"><a name="l00 227"></a><span class="lineno"> 227</span>  (<span class="keyword">typename</span> <a class="code" href="structprocess_1_1grpc_1_1client_1_1internal_1_1MethodTraits.html">internal::MethodTraits<Method>::stub_type</a>(</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  connection.<a class="code" href="classprocess_1_1grpc_1_1client_1_1Connection.html#a2ee6f5abf57c66128bb1c5a4751880f8">channel</a>).*method)(<a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>.get(), <a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>, queue);</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  reader->StartCall();</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div> <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// Create a `ReceiveCallback` as a tag in the `CompletionQueue` for</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// the current asynchronous gRPC call. The callback will set up the</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// above `Promise` upon receiving a response.</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">// NOTE: `context` and `reader` need to be held on in order to get</span></div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// updates for the ongoing RPC, and thus are captured here. The</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&# 160; <span class="comment">// callback itself will later be retrieved and managed in the</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// looper thread.</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">void</span>* tag = <span class="keyword">new</span> <a class="code" href="classlambda_1_1CallableOnce.html">ReceiveCallback</a>(</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  [<a class="code" href="namespaceprocess_1_1network_1_1openssl.html#a9ea7f1e144d9731d6fb4e4a0d80a7c56">context</a>, reader, response, status, promise]() {</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="libprocess_2include_2process_2check_8hpp.html#a3e2ba5c8589f7f5799251a12409e142c">CHECK_PENDING</a>(promise->future());</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (promise->future().hasDiscard()) {</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  promise->discard();</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  promise->set(status->ok()</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  ? std::move(*response)</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  : <a class="code" href="classTry.html#abb21343eabcba0eb0d88f13c4fbdf1f7">Try<Response, StatusError>::error</a>(std::move(*status)));</div><div class="line"><a name="l00248"></a><span class="lineno"> 2 48</span>  }</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  });</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  reader->Finish(response.get(), status.get(), tag);</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  },</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  std::forward<Request>(<a class="code" href="namespaceprocess_1_1http.html#ad8f400b5e54038df7e5662ec35da05fa">request</a>),</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  lambda::_1,</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  lambda::_2));</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">return</span> future;</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a20443908afa3212215166e26065349e5">terminate</a>();</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> </div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <a class="code" href="classprocess_1_1Future.html">Future<Nothing></a> <a class="code" href="namespaceprocess.html#a07833fb41a8b0c1f18fa5485ca8c18d4">wait</a>();</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// Type of the callback functions that can get invoked when sending a request</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="comment">// or receiving a response.</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.html">lambda::CallableOnce</a><</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  void(<span class="keywordtype">bool</span>, ::grpc::CompletionQueue*)> <a class="code" href="classlambda_1_1CallableOnce.html">SendCallback</a>;</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keyword">typedef</span> <a class="code" href="classlambda_1_1CallableOnce.htm l">lambda::CallableOnce<void()></a> <a class="code" href="classlambda_1_1CallableOnce.html">ReceiveCallback</a>;</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keyword">class </span>RuntimeProcess : <span class="keyword">public</span> <a class="code" href="classprocess_1_1Process.html">Process</a><RuntimeProcess></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  {</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  RuntimeProcess();</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  ~RuntimeProcess() <span class="keyword">override</span>;</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess_1_1windows.html#a04c64346155d34517acdf8b587162868">send</a>(SendCallback callback);</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordtype">void</span> receive(ReceiveCallback callback);</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordtype">void</span> <a class="code" href="namespaceprocess.html#a20443908afa3212215166e26065349e5">terminate</a>();</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <a class="code" href="classprocess_1_1Future.html">Future<Nothing></a> <a class="code" href="namespaceprocess.html#a07833fb41a8b0c1f18fa5485ca8c18d4">wait</a>();</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div><div class="line" ><a name="l00292"></a><span class="lineno"> 292</span>  <span >class="keyword">private</span>:</div><div class="line"><a >name="l00293"></a><span class="lineno"> 293</span>  <span >class="keywordtype">void</span> <a class="code" >href="namespaceprocess.html#a6c9cd01950a98038b2a6df3e5066418f">initialize</a>() > <span class="keyword">override</span>;</div><div class="line"><a >name="l00294"></a><span class="lineno"> 294</span>  <span >class="keywordtype">void</span> <a class="code" >href="namespaceprocess.html#a238371634a6637198c58ea740b0890ca">finalize</a>() ><span class="keyword">override</span>;</div><div class="line"><a >name="l00295"></a><span class="lineno"> 295</span> </div><div >class="line"><a name="l00296"></a><span class="lineno"> 296</span>  ><span class="keywordtype">void</span> <a class="code" >href="namespaceprocess.html#a59c192ee8ea5abbbee1642957f47c92a">loop</a>();</div><div > class="line"><a name="l00297"></a><span class="lineno"> 297</span>& #160;</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  ::grpc::CompletionQueue queue;</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  std::unique_ptr<std::thread> looper;</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordtype">bool</span> terminating;</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <a class="code" href="classprocess_1_1Promise.html">Promise<Nothing></a> terminated;</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  };</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">struct </span>Data</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  {</div><div class="line"><a name="l00306"></ a><span class="lineno"> 306</span>  Data();</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  ~Data();</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <a class="code" href="structprocess_1_1PID.html">PID<RuntimeProcess></a> pid;</div><div class="line"> <TRUNCATED>
