http://git-wip-us.apache.org/repos/asf/mesos-site/blob/e6085b1f/content/api/latest/c++/src_2log_2network_8hpp_source.html ---------------------------------------------------------------------- diff --git a/content/api/latest/c++/src_2log_2network_8hpp_source.html b/content/api/latest/c++/src_2log_2network_8hpp_source.html index 31c50d6..5acc169 100644 --- a/content/api/latest/c++/src_2log_2network_8hpp_source.html +++ b/content/api/latest/c++/src_2log_2network_8hpp_source.html @@ -52,13 +52,13 @@ <div class="title">network.hpp</div> </div> </div><!--header--> <div class="contents"> -<a href="src_2log_2network_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 to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a ><span class="lineno"> 6</span> <span class="comment">// >"License"); you may not use this file except in >compliance</span></div><div class="line"><a name="l00007"></a><span >class="lineno"> 7</span> <span class="comment">// with the License. >You may obtain a copy of the License at</span></div><div class="line"><a >name="l00008"></a><span class="lineno"> 8</span> <span >class="comment">//</span></div><div class="line"><a name="l00009"></a><span >class="lineno"> 9</span> <span class="comment">// >http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a >name="l00010"></a><span class="lineno"> 10</span> <span >class="comment">//</span></div><div class="line"><a name="l00011"></a><span >class="lineno"> 11</span> <span class="comment">// Unless required by >applicable law or agreed to in writing, software</span></div><div >class="line"><a name="l00012"></a><span class="lineno"> >12</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#ifndef __NETWORK_HPP__</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#define __NETWORK_HPP__</span></div><div class="line"><a name ="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// TODO(benh): Eventually move and associate this code with the</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// libprocess protobuf code rather than keep it here.</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 <list></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <set></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <string></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="group_8hpp.html">mesos/zookeeper/group.hpp</a>></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="collect_8hpp.html">process/collect.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_2executor_8hpp.html">process/executor.hpp</a>></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="id_8hpp.html">process/id.hpp</a>></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class=" preprocessor">#include <<a class="code" href="3rdparty_2libprocess_2include_2process_2protobuf_8hpp.html">process/protobuf.hpp</a>></span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="duration_8hpp.html">stout/duration.hpp</a>></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="foreach_8hpp.html">stout/foreach.hpp</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="lambda_8hpp.html">stout/lambda.hpp</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="nothing_8hpp.html">stout/nothing .hpp</a>></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="set_8hpp.html">stout/set.hpp</a>></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <<a class="code" href="unreachable_8hpp.html">stout/unreachable.hpp</a>></span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include "<a class="code" href="src_2logging_2logging_8hpp.html">logging/logging.hpp</a>"</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// Forward declaration.</span></div><div class="line"><a name="l00044"></a><span class="linen o"> 44</span> <span class="keyword">class </span><a class="code" href="classNetworkProcess.html">NetworkProcess</a>;</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> <span class="comment">// A "network" is a collection of protobuf processes (may be local</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// and/or remote). A network abstracts away the details of maintaining</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// which processes are waiting to receive messages and requests in the</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// presence of failures and dynamic reconfiguration.</span></div><div class="line"><a name="l00050"></a><span class="lineno"><a c lass="line" href="classNetwork.html"> 50</a></span> <span class="keyword">class </span><a class="code" href="classNetwork.html">Network</a></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b"> 53</a></span>  <span class="keyword">enum</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">WatchMode</a></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba7f1c8f1a0171b0e809d6c2e69490671a"> 55</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46 ba7f1c8f1a0171b0e809d6c2e69490671a">EQUAL_TO</a>,</div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba35573a903c78a976ee1becfd4c41b64a"> 56</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba35573a903c78a976ee1becfd4c41b64a">NOT_EQUAL_TO</a>,</div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba83a711502205ef7ec107abfd72c969bf"> 57</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba83a711502205ef7ec107abfd72c969bf">LESS_THAN</a>,</div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46bae3f845f5bd93ed6d177e85214c15f5b1"> 58</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46bae3f845f5bd93ed6d177e85214c1 5f5b1">LESS_THAN_OR_EQUAL_TO</a>,</div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba5720bf2cef2135857ad15209169bbd8c"> 59</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba5720bf2cef2135857ad15209169bbd8c">GREATER_THAN</a>,</div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba478ef22cc32892ffd21294e285b93e31"> 60</a></span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba478ef22cc32892ffd21294e285b93e31">GREATER_THAN_OR_EQUAL_TO</a></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  };</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>  <a class="code" href="classNetwork.html#a3cc2 fb4f8fa4d507077e8da85ce5a1c8">Network</a>();</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">explicit</span> <a class="code" href="classNetwork.html#a3cc2fb4f8fa4d507077e8da85ce5a1c8">Network</a>(<span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>);</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">virtual</span> <a class="code" href="classNetwork.html#a7a4e19cdb4bf0c7ecf82baa643831492">~Network</a>();</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// Adds a PID to this network.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">void</span> <a class="code" href=" classNetwork.html#ae3f5928f9e83376daebfac35c789ae5e">add</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid);</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// Removes a PID from this network.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">void</span> <span class="keyword">remove</span>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid);</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// Set the PIDs that are part of this network.</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74 </span>  <span class="keywordtype">void</span> <span class="keyword">set</span>(<span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// Returns a future which gets set when the network size satisfies</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// the constraint specified by 'size' and 'mode'. For example, if</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// 'size' is 2 and 'mode' is GREATER_THAN, then the returned future</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class= "comment">// will get set when the size of the network is greater than 2.</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="classprocess_1_1Future.html">process::Future<size_t></a> <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a>(</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>,</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">WatchMode</a> <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a> = <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba35573a903c78a976ee1becfd4c41b64a">NOT_EQUAL_TO</a>) <span class="keyword">const</span>;</div>< div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Sends a request to each member of the network and returns a set</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// of futures that represent their responses.</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Req, <span class="keyword">typename</span> Res></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classprocess_1_1Future.html">process::Future<std::set<process::Future<Res></a>>> <a class="code" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc">broadcast</a>(</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">const</span> <a class="code" href="structProtocol.html">Protocol<Req, Res></a>& protocol,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">const</span> Req& req,</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a> = std::set<process::UPID>()) <span class="keyword">const</span>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// Sends a message to each member of the network. The returned</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// future is set when the message is broadcasted.</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> M></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="classprocess_1_1Future.html">process::Future<Nothing></a> <a class="code" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc">broadcast</a>(</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">const</span> M& m,</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a> = std::set<process::UPID>()) <span class="keyword">const</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> 60;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Not copyable, not assignable.</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="classNetwork.html#a3cc2fb4f8fa4d507077e8da85ce5a1c8">Network</a>(<span class="keyword">const</span> <a class="code" href="classNetwork.html">Network</a>&);</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="classNetwork.html">Network</a>& operator=(<span class="keyword">const</span> <a class="code" href="classNetwork.html">Network</a>&);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="classNetworkProcess .html">NetworkProcess</a>* <a class="code" href="namespaceprocess.html">process</a>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> };</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="classZooKeeperNetwork.html"> 108</a></span> <span class="keyword">class </span><a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a> : <span class="keyword">public</span> <a class="code" href="classNetwork.html">Network</a></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> {</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="classZooKeep erNetwork.html">ZooKeeperNetwork</a>(</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">const</span> std::string& servers,</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">const</span> <a class="code" href="classDuration.html">Duration</a>& timeout,</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">const</span> std::string& znode,</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">const</span> <a class="code" href="classOption.html">Option<zookeeper::Authentication></a>& auth,</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a373bd5e2bd8f2694e4589293af477854">base</a> = std::set<process::UPID>());</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">typedef</span> <a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a> <a class="code" href="classZooKeeperNetwork.html">This</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">// Not copyable, not assignable.</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a>(<span class="keyword">const</span> <a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a>&);</div> <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a>& operator=(<span class="keyword">const</span> <a class="code" href="classZooKeeperNetwork.html">ZooKeeperNetwork</a>&);</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// Helper that sets up a watch on the group.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">void</span> <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a>(<span class="keyword">const</span> std::set<zookeeper::Group::Membership>& expected);</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <s pan class="comment">// Invoked when the group memberships have changed.</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordtype">void</span> watched(<span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">process::Future</a><std::set<zookeeper::Group::Membership>>&);</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>  <span class="comment">// Invoked when group members data has been collected.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">void</span> collected(</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">process::Future</a><<a class="code" href="namespacecgroup s_1_1devices.html#a22494291bc2cb89697dcd2b5f288bdd3">std::list</a><<a class="code" href="classOption.html">Option<std::string></a>>>& datas);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="classzookeeper_1_1Group.html">zookeeper::Group</a> <a class="code" href="structgroup.html">group</a>;</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <a class="code" href="classprocess_1_1Future.html">process::Future<std::set<zookeeper::Group::Membership></a>> memberships;</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// The set of PIDs that are always in the network.</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</s pan>  std::set<process::UPID> <a class="code" href="namespaceprocess.html#a373bd5e2bd8f2694e4589293af477854">base</a>;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// NOTE: The declaration order here is important. We want to delete</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// the 'executor' before we delete the 'group' so that we don't get</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">// spurious fatal errors when the 'group' is being deleted.</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="classprocess_1_1Executor.html">process::Executor</a> executor;</div><div class="line"><a name="l00145"></a><s pan class="lineno"> 145</span> };</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> </div><div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="classNetworkProcess.html"> 148</a></span> <span class="keyword">class </span><a class="code" href="classNetworkProcess.html">NetworkProcess</a> : <span class="keyword">public</span> <a class="code" href="classProtobufProcess.html">ProtobufProcess</a><NetworkProcess></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> {</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00151"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#a27e374e97a8ba393559ea8f9c7ee4d97"> 151</a></span>  <a class="code" href="classNetworkProcess.html# a27e374e97a8ba393559ea8f9c7ee4d97">NetworkProcess</a>() : ProcessBase(<a class="code" href="namespaceprocess.html">process</a>::ID::<a class="code" href="namespaceprocess_1_1ID.html#aeb11a48c9def1da169d8455a30d0ee39">generate</a>(<span class="stringliteral">"log-network"</span>)) {}</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div><div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#a961c50276561074c6666c35f979b75b5"> 153</a></span>  <span class="keyword">explicit</span> <a class="code" href="classNetworkProcess.html#a961c50276561074c6666c35f979b75b5">NetworkProcess</a>(<span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>)</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  : ProcessBase(<a class="code" href="namespaceprocess.html">process</ a>::ID::<a class="code" href="namespaceprocess_1_1ID.html#aeb11a48c9def1da169d8455a30d0ee39">generate</a>(<span class="stringliteral">"log-network"</span>))</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">set</span>(<a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>);</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#a8f7dc78648ac86e67596f7274e7543e8"> 159</a></span>  <span class="keywordtype">void</span> <a class="code" href="classNetworkProcess.html#a8f7dc78648ac86e67596f7274e7543e8">add</a>(<span class="keyword">const</span> <a class="code" href="structproce ss_1_1UPID.html">process::UPID</a>& pid)</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  {</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment">// Link in order to keep a socket open (more efficient).</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="comment">//</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// We force a reconnect to avoid sending on a "stale" socket. In</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// general when linking to a remote process, the underlying TCP</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// connection may become "stale". RFC 793 refers to this as a</span></div><div clas s="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// "half-open" connection: the RST is not sent upon the death</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// of the peer and a RST will only be received once further</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// data is sent on the socket.</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">//</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// "Half-open" (aka "stale") connections are typically addressed</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// via keep-alives (see RFC 1122 4.2.3.6) to periodically probe</span>< /div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">// the connection. In this case, we can rely on the (re-)addition</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// of the network member to create a new connection.</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">//</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// See MESOS-5576 for a scenario where reconnecting helps avoid</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// dropped messages.</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  link(pid, RemoteConnection::RECONNECT);</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.insert(pid);</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// Update any pending watches.</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <a class="code" href="namespacerouting_1_1filter_1_1basic.html#a088d88712e011acb0673da92045b365b">update</a>();</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#a865d2584e57d04f2b8731b159082b2e4"> 185</a></span>  <span class="keywordtype">void</span> <sp an class="keyword">remove</span>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid)</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  {</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// TODO(benh): unlink(pid);</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.erase(pid);</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">// Update any pending watches.</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <a class="code" href="namespacerouting_1_1filter_1_1basic.html#a088d88712e011acb0673da92045b365b">update</a>();</div><di v class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#aeddc897b59e6a9f85b878c8d7280df86"> 194</a></span>  <span class="keywordtype">void</span> <span class="keyword">set</span>(<span class="keyword">const</span> std::set<process::UPID>& _pids)</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.clear();</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid, _pids) {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="classNetwork.html#ae3f5928f9e83376daebfac35c789ae5e">add</a>(pid); <span class="comment">// Also does a link.</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">// Update any pending watches.</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="namespacerouting_1_1filter_1_1basic.html#a088d88712e011acb0673da92045b365b">update</a>();</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"><a class="li ne" href="classNetworkProcess.html#a68b3187740a1368babf8cd06c4519bbf"> 205</a></span>  <a class="code" href="classprocess_1_1Future.html">process::Future<size_t></a> <a class="code" href="classNetworkProcess.html#a68b3187740a1368babf8cd06c4519bbf">watch</a>(<span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>, <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">Network::WatchMode</a> <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a>)</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (satisfied(size, mode)) {</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html# a42af1cab63434cedf2b698cd6f49f073">pids</a>.size();</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> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  Watch* <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a> = <span class="keyword">new</span> Watch(size, mode);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  watches.push_back(watch);</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>  <span class="comment">// TODO(jieyu): Consider deleting 'watch' if the returned future</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="comment">// is discarded by the user.</span></div><di v class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">return</span> watch->promise.future();</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</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>  <span class="comment">// Sends a request to each of the group members and returns a set</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// of futures that represent their responses.</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Req, <span class="keyword">typename</span> Res></div><div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="classNetworkProcess.html#adde5598934 df8f0d514db2b01d2508f2"> 222</a></span>  std::set<process::Future<Res>> <a class="code" href="classNetworkProcess.html#adde5598934df8f0d514db2b01d2508f2">broadcast</a>(</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> <a class="code" href="structProtocol.html">Protocol<Req, Res></a>& protocol,</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keyword">const</span> Req& req,</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a>)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  std::set<process::Future<Res&g t;> futures;</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">typename</span> std::set<process::UPID>::const_iterator iterator;</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">for</span> (iterator = <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.begin(); iterator != <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.end(); ++iterator) {</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid = *iterator;</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span> (filter.count(pid) == 0) {</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  futures.insert(protocol(pid, req));</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> futures;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// Sends a request to each of the group members without expecting responses.</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> M></div><div class="line"><a name="l00240"></a><span class="lineno"><a class="line" href="classNetworkProcess.html #a96f258726d50884bad2b45143791d9e3"> 240</a></span>  <a class="code" href="structNothing.html">Nothing</a> <a class="code" href="classNetworkProcess.html#a96f258726d50884bad2b45143791d9e3">broadcast</a>(</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">const</span> M& m,</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a>)</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  {</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  std::set<process::UPID>::const_iterator iterator;</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">for</span> (iterator = <a class="code" href="namespaceos.ht ml#a42af1cab63434cedf2b698cd6f49f073">pids</a>.begin(); iterator != <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.end(); ++iterator) {</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid = *iterator;</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">if</span> (filter.count(pid) == 0) {</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// NOTE: Just send this message as the network process itself</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// since we don't need to deliver responses back to the caller.</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// Incoming messages addressed to the network are simply dropped.</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <a class="code" href="namespacenet.html#a69f77aa4677f1dd1c69169589b30a31b">send</a>(pid, m);</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>  }</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">return</span> <a class="code" href="structNothing.html">Nothing</a>();</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  }</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="keyword">protected</span>:</div><div class="line"><a name="l00258"></a><span class="l ineno"><a class="line" href="classNetworkProcess.html#a36b7e3c3759a96959823ee339fa68392"> 258</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classNetworkProcess.html#a36b7e3c3759a96959823ee339fa68392">finalize</a>()</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  {</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">foreach</span> (Watch* <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a>, watches) {</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  watch->promise.fail(<span class="stringliteral">"Network is being terminated"</span>);</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">delete</span> <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">wat ch</a>;</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  }</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  watches.clear();</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</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="keyword">struct </span>Watch</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  {</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  Watch(<span class="keywordtype">size_t</span> _size, <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">Network::WatchMode</a> _mode)</div><div class="line"><a name="l00271"></a>< span class="lineno"> 271</span>  : <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>(_size), <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a>(_mode) {}</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">Network::WatchMode</a> <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a>;</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <a class="code" href="classprocess_1_1Promise.html">process::Promise<size_t></ a> <a class="code" href="namespacemesos_1_1internal_1_1log_1_1protocol.html#a3b1f8bd7b18c51af9d1f58842950b545">promise</a>;</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  };</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">// Not copyable, not assignable.</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <a class="code" href="classNetworkProcess.html">NetworkProcess</a>(<span class="keyword">const</span> <a class="code" href="classNetworkProcess.html">NetworkProcess</a>&);</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <a class="code" href="classNetworkProcess.html">NetworkProcess</a>& operator=(<span class="keyword">const</span> <a class="code" href="classNetworkProcess.html">NetworkProcess</a>&);</div><div class=" line"><a name="l00281"></a><span class="lineno"> 281</span> </div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="comment">// Notifies the change of the network.</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordtype">void</span> <a class="code" href="namespacerouting_1_1filter_1_1basic.html#a088d88712e011acb0673da92045b365b">update</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">const</span> <span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a> = watches.size();</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < <a cla ss="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>; i++) {</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  Watch* <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a> = watches.front();</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  watches.pop_front();</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">if</span> (satisfied(watch->size, watch->mode)) {</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  watch->promise.set(<a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size());</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keyword">delete</span> <a clas s="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">watch</a>;</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  watches.push_back(watch);</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>  }</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>  <span class="comment">// Returns true if the current size of the network satisfies the</span></div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">// constraint specified by 's ize' and 'mode'.</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordtype">bool</span> satisfied(<span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>, <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">Network::WatchMode</a> <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a>)</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>  <span class="keywordflow">switch</span> (mode) {</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">case</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba7f1c8f1a0171b0e809d6c2e69490671a">Network::EQUAL_TO</a>:</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() == <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">case</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba35573a903c78a976ee1becfd4c41b64a">Network::NOT_EQUAL_TO</a>:</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() != <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">case</span> < a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba83a711502205ef7ec107abfd72c969bf">Network::LESS_THAN</a>:</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() < <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">case</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46bae3f845f5bd93ed6d177e85214c15f5b1">Network::LESS_THAN_OR_EQUAL_TO</a>:</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() <= <a class="code" href="namespaceos_1_1stat.html#a7a 116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">case</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba5720bf2cef2135857ad15209169bbd8c">Network::GREATER_THAN</a>:</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() > <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">case</span> <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46ba478ef22cc32892ffd21294e285b93e31">Network::GREATER_THAN_OR_EQUAL_TO</a>:</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span clas s="keywordflow">return</span> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>.size() >= <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>;</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">default</span>:</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  LOG(FATAL) << <span class="stringliteral">"Invalid watch mode"</span>;</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <a class="code" href="unreachable_8hpp.html#a0bc63b24b654ca433be7b97a3edde132">UNREACHABLE</a>();</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  }</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  }</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div><div class="line "><a name="l00322"></a><span class="lineno"> 322</span>  std::set<process::UPID> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>;</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  std::list<Watch*> watches;</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> };</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div><div class="line"><a name="l00327"></a><span class="lineno"><a class="line" href="classNetwork.html#a3cc2fb4f8fa4d507077e8da85ce5a1c8"> 327</a></span> <span class="keyword">inline</span> <a class="code" href="classNetwork.html#a3cc2fb4f8fa4d507077e8da85ce5a1c8">Network::Network</a>()</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> {</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="namespaceprocess.html">process</a> = <span class="keyword">new</span> <a class="code" href="classNetworkProcess.html">NetworkProcess</a>();</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <a class="code" href="namespaceprocess.html#aff22904a83567125d3b4d0d88e5a2270">process::spawn</a>(<a class="code" href="namespaceprocess.html">process</a>);</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> }</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div><div class="line"><a name="l00334"></a><span class="lineno"><a class="line" href="classNetwork.html#af5fdbd9ebb3015e2532841939975d6db"> 334</a></span> <span class="keyword">inline</span> <a class="code" href="classNetwork.html#a3cc2fb4f8fa4d507077e8da85ce5a1c8">Network::Network</a>(<span class="keyword">const </span> std::set<process::UPID>& <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>)</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> {</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <a class="code" href="namespaceprocess.html">process</a> = <span class="keyword">new</span> <a class="code" href="classNetworkProcess.html">NetworkProcess</a>(pids);</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="namespaceprocess.html#aff22904a83567125d3b4d0d88e5a2270">process::spawn</a>(<a class="code" href="namespaceprocess.html">process</a>);</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> }</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> </div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div><div class="line"><a name="l00341" ></a><span class="lineno"><a class="line" >href="classNetwork.html#a7a4e19cdb4bf0c7ecf82baa643831492"> >341</a></span> <span class="keyword">inline</span> <a class="code" >href="classNetwork.html#a7a4e19cdb4bf0c7ecf82baa643831492">Network::~Network</a>()</div><div > class="line"><a name="l00342"></a><span class="lineno"> >342</span> {</div><div class="line"><a name="l00343"></a><span >class="lineno"> 343</span>  <a class="code" >href="namespaceprocess.html#a20443908afa3212215166e26065349e5">process::terminate</a>(<a > class="code" href="namespaceprocess.html">process</a>);</div><div >class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a >class="code" >href="namespaceprocess.html#a07833fb41a8b0c1f18fa5485ca8c18d4">process::wait</a>(<a > class="code" href="namespaceprocess.html">process</a>);</div><div >class="line"><a name="l00345"></a><span class="lineno"> 345</span>  ><span class="keyword">delete</span> <a class="code" >href="namespaceprocess.html">p rocess</a>;</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span> }</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span> </div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div><div class="line"><a name="l00349"></a><span class="lineno"><a class="line" href="classNetwork.html#ae3f5928f9e83376daebfac35c789ae5e"> 349</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classNetwork.html#ae3f5928f9e83376daebfac35c789ae5e">Network::add</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid)</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span> {</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href ="namespaceprocess.html">process</a>, &<a class="code" href="classNetworkProcess.html#a8f7dc78648ac86e67596f7274e7543e8">NetworkProcess::add</a>, pid);</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span> }</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> </div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div><div class="line"><a name="l00355"></a><span class="lineno"><a class="line" href="classNetwork.html#a4e7349244ab231fe08db8c59d159d5b7"> 355</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classNetwork.html#a4e7349244ab231fe08db8c59d159d5b7">Network::remove</a>(<span class="keyword">const</span> <a class="code" href="structprocess_1_1UPID.html">process::UPID</a>& pid)</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> {</div><div class="line"><a name="l00357"></a><span class="li neno"> 357</span>  <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href="namespaceprocess.html">process</a>, &<a class="code" href="classNetworkProcess.html#a865d2584e57d04f2b8731b159082b2e4">NetworkProcess::remove</a>, pid);</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> }</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div><div class="line"><a name="l00361"></a><span class="lineno"><a class="line" href="classNetwork.html#a0722ba6e072b74ffbe4556e2d432f103"> 361</a></span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classNetwork.html#a0722ba6e072b74ffbe4556e2d432f103">Network::set</a>(<span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceos.html#a 42af1cab63434cedf2b698cd6f49f073">pids</a>)</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> {</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href="namespaceprocess.html">process</a>, &<a class="code" href="classNetworkProcess.html#aeddc897b59e6a9f85b878c8d7280df86">NetworkProcess::set</a>, pids);</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span> }</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> </div><div class="line"><a name="l00367"></a><span class="lineno"><a class="line" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d"> 367</a></span> <span class="keyword">inline</span> <a class="code" href="classprocess_1_1Future.html">pro cess::Future<size_t></a> <a class="code" href="classNetwork.html#ac273d79a8be8f05411440757979dae5d">Network::watch</a>(</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordtype">size_t</span> <a class="code" href="namespaceos_1_1stat.html#a7a116891923bc8b5d8c50f78da8657be">size</a>, <a class="code" href="classNetwork.html#a43d645248055c352b6550c586dfdf46b">Network::WatchMode</a> <a class="code" href="namespaceos_1_1stat.html#afc51654ad486693167c300612bf8ebfa">mode</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="keyword"></span>{</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href="namespaceprocess.html">process</a>, &<a class="code" href="cl assNetworkProcess.html#a68b3187740a1368babf8cd06c4519bbf">NetworkProcess::watch</a>, size, mode);</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span> }</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> </div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Req, <span class="keyword">typename</span> Res></div><div class="line"><a name="l00375"></a><span class="lineno"><a class="line" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc"> 375</a></span> <a class="code" href="classprocess_1_1Future.html">process::Future<std::set<process::Future<Res></a>>> <a class="code" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc">Network::broadcast</a>(</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keyword">const</span> <a class="code" href="structProtocol.html">Protocol<Req, Res></a>& protocol,</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keyword">const</span> Req& req,</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="keyword"></span>{</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href="namespaceprocess.html">process</a>, &NetworkProcess:: broadcast<Req, Res>,</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  protocol, req, filter);</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> }</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> </div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="keyword">template</span> <<span class="keyword">typename</span> M></div><div class="line"><a name="l00386"></a><span class="lineno"><a class="line" href="classNetwork.html#a75734a1bb2c17828346e03e8bd959690"> 386</a></span> <a class="code" href="classprocess_1_1Future.html">process::Future<Nothing></a> <a class="code" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc">Network::broadcast</a>(</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keyword">const</span> M& m,</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keyword">const</span> std::set<process::UPID>& <a class="code" href="namespaceprocess.html#a3054d5443603436a6315f210a412cbbc">filter</a>)<span class="keyword"> const</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="keyword"></span>{</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="comment">// Need to disambiguate overloaded function.</span></div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <a class="code" href="structNothing.html">Nothing</a> (<a class="code" href="classNetworkProcess.html">NetworkProcess</a>::*<a class="code" href="classNetwork.html#a31e8af8c885552d6cf1000ea846c62dc">broadcast</a>)(<span class="keyword">const</span> M&, <span class="keyword">const</span> std::set<process::UPID>&)</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  = &NetworkProcess::broadcast<M>;</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span> </div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceprocess.html#acfbc29404bc653268289691b0dd59e22">process::dispatch</a>(<a class="code" href="namespaceprocess.html">process</a>, broadcast, m, filter);</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span> }</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span> </div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span> </div><div class="line"><a name="l00398"></a><span class="lineno"><a class="line" href="classZooKeeperNetwork.html#adf9c95d172e51c5ff40c7c14a9370a72"> 398</a></span> <span class="ke yword">inline</span> <a class="code" href="classZooKeeperNetwork.html#adf9c95d172e51c5ff40c7c14a9370a72">ZooKeeperNetwork::ZooKeeperNetwork</a>(</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keyword">const</span> std::string& servers,</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keyword">const</span> <a class="code" href="classDuration.html">Duration</a>& timeout,</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">const</span> std::string& znode,</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keyword">const</span> <a class="code" href="classOption.html">Option<zookeeper::Authentication></a>& auth,</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">const</span> std::set<process::UPID> ;& _base)</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  : <a class="code" href="structgroup.html">group</a>(servers, timeout, znode, auth),</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <a class="code" href="namespaceprocess.html#a373bd5e2bd8f2694e4589293af477854">base</a>(_base)</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> {</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">// PIDs from the base set are in the network from beginning.</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keyword">set</span>(base);</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  watch(std::set<zookeeper::Group::Membership>());</div><div class="line"> <a name="l00411"></a><span class="lineno"> 411</span> }</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span> </div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ZooKeeperNetwork::watch(</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keyword">const</span> std::set<zookeeper::Group::Membership>& expected)</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> {</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  memberships = <a class="code" href="structgroup.html">group</a>.watch(expected);</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  memberships</div><div class="line"><a name="l00419"></a><span class ="lineno"> 419</span>  .<a class="code" href="classprocess_1_1Future.html#a71bde220aed3c725cef2040f63adf42a">onAny</a>(executor.<a class="code" href="classprocess_1_1Executor.html#aa129606e06f0a2cf30f5b198ad826400">defer</a>(<a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">lambda::bind</a>(&This::watched, <span class="keyword">this</span>, lambda::_1)));</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span> }</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span> </div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ZooKeeperNetwork::watched(</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keyword">const</span> <a class="code" href="class process_1_1Future.html">process::Future</a><std::set<zookeeper::Group::Membership>>&)</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> {</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">if</span> (memberships.<a class="code" href="classprocess_1_1Future.html#a493227e57f8848e37777b89c0f81e2ec">isFailed</a>()) {</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="comment">// We can't do much here, we could try creating another Group but</span></div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="comment">// that might just continue indefinitely, so we fail early</span></div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="comment">// instead. Note that Group handles all retryable/recoverable</span></div><div class="line"><a name="l0 0430"></a><span class="lineno"> 430</span>  <span class="comment">// ZooKeeper errors internally.</span></div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  LOG(FATAL) << <span class="stringliteral">"Failed to watch ZooKeeper group: "</span> << memberships.<a class="code" href="classprocess_1_1Future.html#ae649c56b07f44c05e4b7aa3620133ff9">failure</a>();</div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  }</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span> </div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <a class="code" href="libprocess_2include_2process_2check_8hpp.html#a55bf53e1f554470600774a6bf0c09140">CHECK_READY</a>(memberships); <span class="comment">// Not expecting Group to discard futures.</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span> </div><div class="line"><a na me="l00436"></a><span class="lineno"> 436</span>  LOG(INFO) << <span class="stringliteral">"ZooKeeper group memberships changed"</span>;</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// Get data for each membership in order to convert them to PIDs.</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  std::list<process::Future<Option<std::string>>> futures;</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> </div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="structzookeeper_1_1Group_1_1Membership.html">zookeeper::Group::Membership</a>& membership, memberships.<a class="code" href="classprocess_1_1 Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">get</a>()) {</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  futures.push_back(<a class="code" href="structgroup.html">group</a>.data(membership));</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <a class="code" href="namespaceprocess.html#a0f89a937c1caa20e3048e16aeb0c9736">process::collect</a>(futures)</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  .<a class="code" href="classprocess_1_1Future.html#a7818051e0d3d4ef9aa6a25d9246312ea">after</a>(<a class="code" href="classSeconds.html">Seconds</a>(5),</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  [](<a class="code" href="classprocess_1_1Future.html">process::F uture</a><<a class="code" href="namespacecgroups_1_1devices.html#a22494291bc2cb89697dcd2b5f288bdd3">std::list</a><<a class="code" href="classOption.html">Option<std::string></a>>> datas) {</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="comment">// Handling time outs when collecting membership</span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="comment">// data. For now, a timeout is treated as a failure.</span></div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  datas.discard();</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">return</span> <a class="code" href="structprocess_1_1Failure.html">process::Failure</a>(<span class="stringliteral">"Timed out"</span>);</div><div class="line"><a name="l00452"></a><span class= "lineno"> 452</span>  })</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  .onAny(executor.<a class="code" href="classprocess_1_1Executor.html#aa129606e06f0a2cf30f5b198ad826400">defer</a>(<a class="code" href="namespaceprocess_1_1network.html#ad067110a4b38cc83785a43f49bf6c8e2">lambda::bind</a>(&This::collected, <span class="keyword">this</span>, lambda::_1)));</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span> }</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span> </div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ZooKeeperNetwork::collected(</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keyword">const</span> <a class="code" href="classprocess_1_1Future.html">process::Future</a><<a class="code" href="namespacecgroups_1_1devices.html#a22494291bc2cb89697dcd2b5f288bdd3">std::list</a><<a class="code" href="classOption.html">Option<std::string></a>>>& datas)</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> {</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">if</span> (datas.isFailed()) {</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  LOG(WARNING) << <span class="stringliteral">"Failed to get data for ZooKeeper group members: "</span></div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  << datas.failure();</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class=" comment">// Try again later assuming empty group. Note that this does not</span></div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">// remove any of the current group members.</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  watch(std::set<zookeeper::Group::Membership>());</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span> </div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <a class="code" href="libprocess_2include_2process_2check_8hpp.html#a55bf53e1f554470600774a6bf0c09140">CHECK_READY</a>(datas); <span class="comment">// Not expecting collect to discard futures.</span></div><div class="line"><a na me="l00471"></a><span class="lineno"> 471</span> </div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  std::set<process::UPID> <a class="code" href="namespaceos.html#a42af1cab63434cedf2b698cd6f49f073">pids</a>;</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span> </div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keywordflow">foreach</span> (<span class="keyword">const</span> <a class="code" href="classOption.html">Option<std::string></a>& data, datas.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>()) {</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="comment">// Data could be None if the membership is gone before its</span></div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// content can be read.</span></div><d iv class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keywordflow">if</span> (data.<a class="code" href="classOption.html#a4e3bf8416d95246f43c91f1b5c309323">isSome</a>()) {</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <a class="code" href="structprocess_1_1UPID.html">process::UPID</a> pid(data.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>());</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  CHECK(pid) << <span class="stringliteral">"Failed to parse '"</span> << data.<a class="code" href="classOption.html#a21358442c0fac1cc978a67a9a9089a79">get</a>() << <span class="stringliteral">"'"</span>;</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  pids.insert(pid);</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  }</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  }</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span> </div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  LOG(INFO) << <span class="stringliteral">"ZooKeeper group PIDs: "</span> << <a class="code" href="namespacens.html#a28116b46e6543597a11733424cd1aa20">stringify</a>(pids);</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// Update the network. We make sure that the PIDs from the base set</span></div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// are always in the network.</span></div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keyword">set</span>(pids | base);</div ><div class="line"><a name="l00489"></a><span class="lineno"> >489</span> </div><div class="line"><a name="l00490"></a><span >class="lineno"> 490</span>  watch(memberships.<a class="code" >href="classprocess_1_1Future.html#aa78977d3b585a5f5ccd682c1e9e2ddc4">get</a>());</div><div > class="line"><a name="l00491"></a><span class="lineno"> >491</span> }</div><div class="line"><a name="l00492"></a><span >class="lineno"> 492</span> </div><div class="line"><a >name="l00493"></a><span class="lineno"> 493</span> <span >class="preprocessor">#endif // __NETWORK_HPP__</span></div><div class="ttc" >id="namespaceprocess_1_1ID_html_aeb11a48c9def1da169d8455a30d0ee39"><div >class="ttname"><a >href="namespaceprocess_1_1ID.html#aeb11a48c9def1da169d8455a30d0ee39">process::ID::generate</a></div><div > class="ttdeci">std::string generate(const std::string >&prefix="")</div><div class="ttdoc">Returns >&#39;prefix(N)&#39; where N represents the number of instances where the same prefix (wrt...</div></div> +<a href="src_2log_2network_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 to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a ><span class="lineno"> 6</span> <span class="comment">// >"License"); you may not use this file except in >compliance</span></div><div class="line"><a name="l00007"></a><span >class="lineno"> 7</span> <span class="comment">// with the License. >You may obtain a copy of the License at</span></div><div class="line"><a >name="l00008"></a><span class="lineno"> 8</span> <span >class="comment">//</span></div><div class="line"><a name="l00009"></a><span >class="lineno"> 9</span> <span class="comment">// >http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a >name="l00010"></a><span class="lineno"> 10</span> <span >class="comment">//</span></div><div class="line"><a name="l00011"></a><span >class="lineno"> 11</span> <span class="comment">// Unless required by >applicable law or agreed to in writing, software</span></div><div >class="line"><a name="l00012"></a><span class="lineno"> >12</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00013"
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