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<li class="navelem"><a class="el" href="dir_a62226f9e3a6c7c5a3be455e2f87ae01.html">xrpld</a></li><li class="navelem"><a class="el" href="dir_42b876eb66f74e25995e23a7c0222dc7.html">rpc</a></li><li class="navelem"><a class="el" href="dir_202f05fcc82d395fac3f43e301f5a49f.html">handlers</a></li> </ul>
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<div class="headertitle"><div class="title">RipplePathFind.cpp</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#include &lt;xrpld/app/ledger/LedgerMaster.h&gt;</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#include &lt;xrpld/app/paths/PathRequests.h&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#include &lt;xrpld/rpc/Context.h&gt;</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;xrpld/rpc/detail/LegacyPathFind.h&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;xrpld/rpc/detail/RPCLedgerHelpers.h&gt;</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;xrpl/protocol/RPCErr.h&gt;</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;xrpl/resource/Fees.h&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// This interface is deprecated.</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><a class="code hl_class" href="classJson_1_1Value.html">Json::Value</a></div>
<div class="foldopen" id="foldopen00014" data-start="{" data-end="}">
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"><a class="line" href="namespaceripple.html#ac53eb9de6770041d54f506751262950e"> 14</a></span><a class="code hl_function" href="namespaceripple.html#ac53eb9de6770041d54f506751262950e">doRipplePathFind</a>(<a class="code hl_struct" href="structripple_1_1RPC_1_1JsonContext.html">RPC::JsonContext</a>&amp; context)</div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span>{</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> <span class="keywordflow">if</span> (context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>.<a class="code hl_function" href="classripple_1_1Application.html#a0c48dd5bcaef14e30e9ef5b96b0daa39">config</a>().<a class="code hl_variable" href="classripple_1_1Config.html#a757dbe77ad46c6e6e3a549c33fbd4f8e">PATH_SEARCH_MAX</a> == 0)</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceripple.html#a67869382f83fd55cf3096d2591a57b07">rpcError</a>(<a class="code hl_enumvalue" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a0d6de5ceef1ebe6f65e14a7561563550">rpcNOT_SUPPORTED</a>);</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a53cf66700be4d73f6249db71ed263bc4">loadType</a> = <a class="code hl_variable" href="namespaceripple_1_1Resource.html#ad74523edd5d732d9b4320240f4d42b2a">Resource::feeHeavyBurdenRPC</a>;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;ReadView const&gt;</a> lpLedger;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <a class="code hl_class" href="classJson_1_1Value.html">Json::Value</a> jvResult;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordflow">if</span> (!context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>.<a class="code hl_function" href="classripple_1_1Application.html#a0c48dd5bcaef14e30e9ef5b96b0daa39">config</a>().<a class="code hl_function" href="classripple_1_1Config.html#a55cd8ef67ffbf6a137e0dd71bc8151c6">standalone</a>() &amp;&amp;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> !context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>.<a class="code hl_function" href="classJson_1_1Value.html#abfa90c81f6aee7877bd5fb4c8445994f">isMember</a>(jss::ledger) &amp;&amp;</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> !context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>.<a class="code hl_function" href="classJson_1_1Value.html#abfa90c81f6aee7877bd5fb4c8445994f">isMember</a>(jss::ledger_index) &amp;&amp;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> !context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>.<a class="code hl_function" href="classJson_1_1Value.html#abfa90c81f6aee7877bd5fb4c8445994f">isMember</a>(jss::ledger_hash))</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> {</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// No ledger specified, use pathfinding defaults</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// and dispatch to pathfinding engine</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">if</span> (context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>.<a class="code hl_function" href="classripple_1_1Application.html#aa303fb1c72786fc008ef52079dee4fe3">getLedgerMaster</a>().<a class="code hl_function" href="classripple_1_1LedgerMaster.html#af6aa770a3d98a0a49d5091163fb675c9">getValidatedLedgerAge</a>() &gt;</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> <a class="code hl_variable" href="namespaceripple_1_1RPC_1_1Tuning.html#a0895924fd22fdc999cfa976cf6b83dc5">RPC::Tuning::maxValidatedLedgerAge</a>)</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> {</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keywordflow">if</span> (context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a0eab3b46cc23d67a6d16d1fb6bcaf0a2">apiVersion</a> == 1)</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceripple.html#a67869382f83fd55cf3096d2591a57b07">rpcError</a>(<a class="code hl_enumvalue" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a128bdc6241c00a1d4486399d304c2d28">rpcNO_NETWORK</a>);</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceripple.html#a67869382f83fd55cf3096d2591a57b07">rpcError</a>(<a class="code hl_enumvalue" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932af301bbeaf5fcfb44db08132e6eae4ac2">rpcNOT_SYNCED</a>);</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> }</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">PathRequest::pointer</a> request;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> lpLedger = context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a92c98828663b6b80d3eb15850ec6897a">ledgerMaster</a>.<a class="code hl_function" href="classripple_1_1LedgerMaster.html#a837b38dc59d5779fe29018cd948aa407">getClosedLedger</a>();</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// It doesn&#39;t look like there&#39;s much odd happening here, but you should</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// be aware this code runs in a JobQueue::Coro, which is a coroutine.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// And we may be flipping around between threads. Here&#39;s an overview:</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="comment">//</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// 1. We&#39;re running doRipplePathFind() due to a call to</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// ripple_path_find. doRipplePathFind() is currently running</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="comment">// inside of a JobQueue::Coro using a JobQueue thread.</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="comment">//</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// 2. doRipplePathFind&#39;s call to makeLegacyPathRequest() enqueues the</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// path-finding request. That request will (probably) run at some</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// indeterminate future time on a (probably different) JobQueue</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// thread.</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="comment">//</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// 3. As a continuation from that path-finding JobQueue thread, the</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// coroutine we&#39;re currently running in (!) is posted to the</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// JobQueue. Because it is a continuation, that post won&#39;t</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// happen until the path-finding request completes.</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="comment">//</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// 4. Once the continuation is enqueued, and we have reason to think</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// the path-finding job is likely to run, then the coroutine we&#39;re</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// running in yield()s. That means it surrenders its thread in</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// the JobQueue. The coroutine is suspended, but ready to run,</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// because it is kept resident by a shared_ptr in the</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// path-finding continuation.</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="comment">//</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// 5. If all goes well then path-finding runs on a JobQueue thread</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// and executes its continuation. The continuation posts this</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// same coroutine (!) to the JobQueue.</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">//</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// 6. When the JobQueue calls this coroutine, this coroutine resumes</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// from the line below the coro-&gt;yield() and returns the</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// path-finding result.</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">//</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// With so many moving parts, what could go wrong?</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">//</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// Just in terms of the JobQueue refusing to add jobs at shutdown</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// there are two specific things that can go wrong.</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="comment">//</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// 1. The path-finding Job queued by makeLegacyPathRequest() might be</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// rejected (because we&#39;re shutting down).</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">//</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// Fortunately this problem can be addressed by looking at the</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="comment">// return value of makeLegacyPathRequest(). If</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// makeLegacyPathRequest() cannot get a thread to run the path-find</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="comment">// on, then it returns an empty request.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="comment">//</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// 2. The path-finding job might run, but the Coro::post() might be</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="comment">// rejected by the JobQueue (because we&#39;re shutting down).</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="comment">//</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// We handle this case by resuming (not posting) the Coro.</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// By resuming the Coro, we allow the Coro to run to completion</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// on the current thread instead of requiring that it run on a</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="comment">// new thread from the JobQueue.</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="comment">//</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="comment">// Both of these failure modes are hard to recreate in a unit test</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// because they are so dependent on inter-thread timing. However</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// the failure modes can be observed by synchronously (inside the</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// rippled source code) shutting down the application. The code to</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// do so looks like this:</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">//</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// context.app.signalStop();</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// while (! context.app.getJobQueue().jobCounter().joined()) { }</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">//</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// The first line starts the process of shutting down the app.</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="comment">// The second line waits until no more jobs can be added to the</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="comment">// JobQueue before letting the thread continue.</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="comment">//</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// May 2017</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> jvResult = context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>.<a class="code hl_function" href="classripple_1_1Application.html#abc1a96b6192bde68612e44c67cd74e7b">getPathRequests</a>().<a class="code hl_function" href="classripple_1_1PathRequests.html#a23ebbccfd572bef7bf7f88792c0eb165">makeLegacyPathRequest</a>(</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> request,</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> [&amp;context]() {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="comment">// Copying the shared_ptr keeps the coroutine alive up</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="comment">// through the return. Otherwise the storage under the</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="comment">// captured reference could evaporate when we return from</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="comment">// coroCopy-&gt;resume(). This is not strictly necessary, but</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="comment">// will make maintenance easier.</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr&lt;JobQueue::Coro&gt;</a> coroCopy{context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a45d96a73d142c05dbc80cdf5bc49d586">coro</a>};</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <span class="keywordflow">if</span> (!coroCopy-&gt;post())</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> {</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="comment">// The post() failed, so we won&#39;t get a thread to let</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="comment">// the Coro finish. We&#39;ll call Coro::resume() so the</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="comment">// Coro can finish on our thread. Otherwise the</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="comment">// application will hang on shutdown.</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> coroCopy-&gt;resume();</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> }</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> },</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#ac048841a0346fae8a7f0c5fc5864049b">consumer</a>,</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> lpLedger,</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>);</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keywordflow">if</span> (request)</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> {</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a45d96a73d142c05dbc80cdf5bc49d586">coro</a>-&gt;yield();</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> jvResult = request-&gt;doStatus(context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>);</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> }</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keywordflow">return</span> jvResult;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="comment">// The caller specified a ledger</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> jvResult = <a class="code hl_function" href="namespaceripple_1_1RPC.html#aaebfaaee35308269fab499f4e203a8c9">RPC::lookupLedger</a>(lpLedger, context);</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">if</span> (!lpLedger)</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">return</span> jvResult;</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <a class="code hl_class" href="classripple_1_1RPC_1_1LegacyPathFind.html">RPC::LegacyPathFind</a> lpf(<a class="code hl_function" href="namespaceripple.html#a6909f61053b6e084f46665fa9f4ee673">isUnlimited</a>(context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a20ec6d6aa84f8c76eeb90ad92fe25e20">role</a>), context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>);</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keywordflow">if</span> (!lpf.<a class="code hl_function" href="classripple_1_1RPC_1_1LegacyPathFind.html#a4a435bef7913d5f5fd52be0be21d7dad">isOk</a>())</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceripple.html#a67869382f83fd55cf3096d2591a57b07">rpcError</a>(<a class="code hl_enumvalue" href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a41779a85a65f6faeb648c960e77f388f">rpcTOO_BUSY</a>);</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">auto</span> result = context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">app</a>.<a class="code hl_function" href="classripple_1_1Application.html#abc1a96b6192bde68612e44c67cd74e7b">getPathRequests</a>().<a class="code hl_function" href="classripple_1_1PathRequests.html#a3362fa140c79ff1c4daeee1b680ba401">doLegacyPathRequest</a>(</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> context.<a class="code hl_variable" href="structripple_1_1RPC_1_1Context.html#ac048841a0346fae8a7f0c5fc5864049b">consumer</a>, lpLedger, context.<a class="code hl_variable" href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">params</a>);</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span>&amp; fieldName : jvResult.<a class="code hl_function" href="classJson_1_1Value.html#a79d7725dce6260317333e69022367ac9">getMemberNames</a>())</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> result[fieldName] = std::move(jvResult[fieldName]);</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keywordflow">return</span> result;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>}</div>
</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span>} <span class="comment">// namespace ripple</span></div>
<div class="ttc" id="aclassJson_1_1Value_html"><div class="ttname"><a href="classJson_1_1Value.html">Json::Value</a></div><div class="ttdoc">Represents a JSON value.</div><div class="ttdef"><b>Definition</b> <a href="json__value_8h_source.html#l00130">json_value.h:131</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html_a79d7725dce6260317333e69022367ac9"><div class="ttname"><a href="classJson_1_1Value.html#a79d7725dce6260317333e69022367ac9">Json::Value::getMemberNames</a></div><div class="ttdeci">Members getMemberNames() const</div><div class="ttdoc">Return a list of the member names.</div><div class="ttdef"><b>Definition</b> <a href="json__value_8cpp_source.html#l01046">json_value.cpp:1046</a></div></div>
<div class="ttc" id="aclassJson_1_1Value_html_abfa90c81f6aee7877bd5fb4c8445994f"><div class="ttname"><a href="classJson_1_1Value.html#abfa90c81f6aee7877bd5fb4c8445994f">Json::Value::isMember</a></div><div class="ttdeci">bool isMember(char const *key) const</div><div class="ttdoc">Return true if the object has a member named key.</div><div class="ttdef"><b>Definition</b> <a href="json__value_8cpp_source.html#l01030">json_value.cpp:1030</a></div></div>
<div class="ttc" id="aclassripple_1_1Application_html_a0c48dd5bcaef14e30e9ef5b96b0daa39"><div class="ttname"><a href="classripple_1_1Application.html#a0c48dd5bcaef14e30e9ef5b96b0daa39">ripple::Application::config</a></div><div class="ttdeci">virtual Config &amp; config()=0</div></div>
<div class="ttc" id="aclassripple_1_1Application_html_aa303fb1c72786fc008ef52079dee4fe3"><div class="ttname"><a href="classripple_1_1Application.html#aa303fb1c72786fc008ef52079dee4fe3">ripple::Application::getLedgerMaster</a></div><div class="ttdeci">virtual LedgerMaster &amp; getLedgerMaster()=0</div></div>
<div class="ttc" id="aclassripple_1_1Application_html_abc1a96b6192bde68612e44c67cd74e7b"><div class="ttname"><a href="classripple_1_1Application.html#abc1a96b6192bde68612e44c67cd74e7b">ripple::Application::getPathRequests</a></div><div class="ttdeci">virtual PathRequests &amp; getPathRequests()=0</div></div>
<div class="ttc" id="aclassripple_1_1Config_html_a55cd8ef67ffbf6a137e0dd71bc8151c6"><div class="ttname"><a href="classripple_1_1Config.html#a55cd8ef67ffbf6a137e0dd71bc8151c6">ripple::Config::standalone</a></div><div class="ttdeci">bool standalone() const</div><div class="ttdef"><b>Definition</b> <a href="Config_8h_source.html#l00317">Config.h:317</a></div></div>
<div class="ttc" id="aclassripple_1_1Config_html_a757dbe77ad46c6e6e3a549c33fbd4f8e"><div class="ttname"><a href="classripple_1_1Config.html#a757dbe77ad46c6e6e3a549c33fbd4f8e">ripple::Config::PATH_SEARCH_MAX</a></div><div class="ttdeci">int PATH_SEARCH_MAX</div><div class="ttdef"><b>Definition</b> <a href="Config_8h_source.html#l00179">Config.h:179</a></div></div>
<div class="ttc" id="aclassripple_1_1LedgerMaster_html_a837b38dc59d5779fe29018cd948aa407"><div class="ttname"><a href="classripple_1_1LedgerMaster.html#a837b38dc59d5779fe29018cd948aa407">ripple::LedgerMaster::getClosedLedger</a></div><div class="ttdeci">std::shared_ptr&lt; Ledger const &gt; getClosedLedger()</div><div class="ttdef"><b>Definition</b> <a href="LedgerMaster_8h_source.html#l00060">LedgerMaster.h:60</a></div></div>
<div class="ttc" id="aclassripple_1_1LedgerMaster_html_af6aa770a3d98a0a49d5091163fb675c9"><div class="ttname"><a href="classripple_1_1LedgerMaster.html#af6aa770a3d98a0a49d5091163fb675c9">ripple::LedgerMaster::getValidatedLedgerAge</a></div><div class="ttdeci">std::chrono::seconds getValidatedLedgerAge()</div><div class="ttdef"><b>Definition</b> <a href="LedgerMaster_8cpp_source.html#l00171">LedgerMaster.cpp:171</a></div></div>
<div class="ttc" id="aclassripple_1_1PathRequests_html_a23ebbccfd572bef7bf7f88792c0eb165"><div class="ttname"><a href="classripple_1_1PathRequests.html#a23ebbccfd572bef7bf7f88792c0eb165">ripple::PathRequests::makeLegacyPathRequest</a></div><div class="ttdeci">Json::Value makeLegacyPathRequest(PathRequest::pointer &amp;req, std::function&lt; void(void)&gt; completion, Resource::Consumer &amp;consumer, std::shared_ptr&lt; ReadView const &gt; const &amp;inLedger, Json::Value const &amp;request)</div><div class="ttdef"><b>Definition</b> <a href="PathRequests_8cpp_source.html#l00253">PathRequests.cpp:253</a></div></div>
<div class="ttc" id="aclassripple_1_1PathRequests_html_a3362fa140c79ff1c4daeee1b680ba401"><div class="ttname"><a href="classripple_1_1PathRequests.html#a3362fa140c79ff1c4daeee1b680ba401">ripple::PathRequests::doLegacyPathRequest</a></div><div class="ttdeci">Json::Value doLegacyPathRequest(Resource::Consumer &amp;consumer, std::shared_ptr&lt; ReadView const &gt; const &amp;inLedger, Json::Value const &amp;request)</div><div class="ttdef"><b>Definition</b> <a href="PathRequests_8cpp_source.html#l00286">PathRequests.cpp:286</a></div></div>
<div class="ttc" id="aclassripple_1_1RPC_1_1LegacyPathFind_html"><div class="ttname"><a href="classripple_1_1RPC_1_1LegacyPathFind.html">ripple::RPC::LegacyPathFind</a></div><div class="ttdef"><b>Definition</b> <a href="LegacyPathFind_8h_source.html#l00012">LegacyPathFind.h:13</a></div></div>
<div class="ttc" id="aclassripple_1_1RPC_1_1LegacyPathFind_html_a4a435bef7913d5f5fd52be0be21d7dad"><div class="ttname"><a href="classripple_1_1RPC_1_1LegacyPathFind.html#a4a435bef7913d5f5fd52be0be21d7dad">ripple::RPC::LegacyPathFind::isOk</a></div><div class="ttdeci">bool isOk() const</div><div class="ttdef"><b>Definition</b> <a href="LegacyPathFind_8h_source.html#l00019">LegacyPathFind.h:19</a></div></div>
<div class="ttc" id="anamespaceripple_1_1RPC_1_1Tuning_html_a0895924fd22fdc999cfa976cf6b83dc5"><div class="ttname"><a href="namespaceripple_1_1RPC_1_1Tuning.html#a0895924fd22fdc999cfa976cf6b83dc5">ripple::RPC::Tuning::maxValidatedLedgerAge</a></div><div class="ttdeci">auto constexpr maxValidatedLedgerAge</div><div class="ttdef"><b>Definition</b> <a href="src_2xrpld_2rpc_2detail_2Tuning_8h_source.html#l00049">src/xrpld/rpc/detail/Tuning.h:49</a></div></div>
<div class="ttc" id="anamespaceripple_1_1RPC_html_aaebfaaee35308269fab499f4e203a8c9"><div class="ttname"><a href="namespaceripple_1_1RPC.html#aaebfaaee35308269fab499f4e203a8c9">ripple::RPC::lookupLedger</a></div><div class="ttdeci">Status lookupLedger(std::shared_ptr&lt; ReadView const &gt; &amp;ledger, JsonContext &amp;context, Json::Value &amp;result)</div><div class="ttdoc">Look up a ledger from a request and fill a Json::Result with the data representing a ledger.</div><div class="ttdef"><b>Definition</b> <a href="RPCLedgerHelpers_8cpp_source.html#l00305">RPCLedgerHelpers.cpp:305</a></div></div>
<div class="ttc" id="anamespaceripple_1_1Resource_html_ad74523edd5d732d9b4320240f4d42b2a"><div class="ttname"><a href="namespaceripple_1_1Resource.html#ad74523edd5d732d9b4320240f4d42b2a">ripple::Resource::feeHeavyBurdenRPC</a></div><div class="ttdeci">Charge const feeHeavyBurdenRPC</div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition</b> <a href="algorithm_8h_source.html#l00006">algorithm.h:6</a></div></div>
<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a0d6de5ceef1ebe6f65e14a7561563550"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a0d6de5ceef1ebe6f65e14a7561563550">ripple::rpcNOT_SUPPORTED</a></div><div class="ttdeci">@ rpcNOT_SUPPORTED</div><div class="ttdef"><b>Definition</b> <a href="ErrorCodes_8h_source.html#l00113">ErrorCodes.h:113</a></div></div>
<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a128bdc6241c00a1d4486399d304c2d28"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a128bdc6241c00a1d4486399d304c2d28">ripple::rpcNO_NETWORK</a></div><div class="ttdeci">@ rpcNO_NETWORK</div><div class="ttdef"><b>Definition</b> <a href="ErrorCodes_8h_source.html#l00047">ErrorCodes.h:47</a></div></div>
<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932a41779a85a65f6faeb648c960e77f388f"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932a41779a85a65f6faeb648c960e77f388f">ripple::rpcTOO_BUSY</a></div><div class="ttdeci">@ rpcTOO_BUSY</div><div class="ttdef"><b>Definition</b> <a href="ErrorCodes_8h_source.html#l00037">ErrorCodes.h:37</a></div></div>
<div class="ttc" id="anamespaceripple_html_a32d6d3ce1a48272b677d2c88b1d30932af301bbeaf5fcfb44db08132e6eae4ac2"><div class="ttname"><a href="namespaceripple.html#a32d6d3ce1a48272b677d2c88b1d30932af301bbeaf5fcfb44db08132e6eae4ac2">ripple::rpcNOT_SYNCED</a></div><div class="ttdeci">@ rpcNOT_SYNCED</div><div class="ttdef"><b>Definition</b> <a href="ErrorCodes_8h_source.html#l00048">ErrorCodes.h:48</a></div></div>
<div class="ttc" id="anamespaceripple_html_a67869382f83fd55cf3096d2591a57b07"><div class="ttname"><a href="namespaceripple.html#a67869382f83fd55cf3096d2591a57b07">ripple::rpcError</a></div><div class="ttdeci">Json::Value rpcError(int iError)</div><div class="ttdef"><b>Definition</b> <a href="RPCErr_8cpp_source.html#l00012">RPCErr.cpp:12</a></div></div>
<div class="ttc" id="anamespaceripple_html_a6909f61053b6e084f46665fa9f4ee673"><div class="ttname"><a href="namespaceripple.html#a6909f61053b6e084f46665fa9f4ee673">ripple::isUnlimited</a></div><div class="ttdeci">bool isUnlimited(Role const &amp;role)</div><div class="ttdoc">ADMIN and IDENTIFIED roles shall have unlimited resources.</div><div class="ttdef"><b>Definition</b> <a href="Role_8cpp_source.html#l00106">Role.cpp:106</a></div></div>
<div class="ttc" id="anamespaceripple_html_ac53eb9de6770041d54f506751262950e"><div class="ttname"><a href="namespaceripple.html#ac53eb9de6770041d54f506751262950e">ripple::doRipplePathFind</a></div><div class="ttdeci">Json::Value doRipplePathFind(RPC::JsonContext &amp;)</div><div class="ttdef"><b>Definition</b> <a href="RipplePathFind_8cpp_source.html#l00014">RipplePathFind.cpp:14</a></div></div>
<div class="ttc" id="ashared_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a0eab3b46cc23d67a6d16d1fb6bcaf0a2"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a0eab3b46cc23d67a6d16d1fb6bcaf0a2">ripple::RPC::Context::apiVersion</a></div><div class="ttdeci">unsigned int apiVersion</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00030">Context.h:30</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a20ec6d6aa84f8c76eeb90ad92fe25e20"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a20ec6d6aa84f8c76eeb90ad92fe25e20">ripple::RPC::Context::role</a></div><div class="ttdeci">Role role</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00027">Context.h:27</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a45d96a73d142c05dbc80cdf5bc49d586"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a45d96a73d142c05dbc80cdf5bc49d586">ripple::RPC::Context::coro</a></div><div class="ttdeci">std::shared_ptr&lt; JobQueue::Coro &gt; coro</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00028">Context.h:28</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a53cf66700be4d73f6249db71ed263bc4"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a53cf66700be4d73f6249db71ed263bc4">ripple::RPC::Context::loadType</a></div><div class="ttdeci">Resource::Charge &amp; loadType</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00023">Context.h:23</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a7878751d68ed7fd43c385913c5e6ff04"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a7878751d68ed7fd43c385913c5e6ff04">ripple::RPC::Context::app</a></div><div class="ttdeci">Application &amp; app</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00022">Context.h:22</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_a92c98828663b6b80d3eb15850ec6897a"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#a92c98828663b6b80d3eb15850ec6897a">ripple::RPC::Context::ledgerMaster</a></div><div class="ttdeci">LedgerMaster &amp; ledgerMaster</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00025">Context.h:25</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1Context_html_ac048841a0346fae8a7f0c5fc5864049b"><div class="ttname"><a href="structripple_1_1RPC_1_1Context.html#ac048841a0346fae8a7f0c5fc5864049b">ripple::RPC::Context::consumer</a></div><div class="ttdeci">Resource::Consumer &amp; consumer</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00026">Context.h:26</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1JsonContext_html"><div class="ttname"><a href="structripple_1_1RPC_1_1JsonContext.html">ripple::RPC::JsonContext</a></div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00033">Context.h:34</a></div></div>
<div class="ttc" id="astructripple_1_1RPC_1_1JsonContext_html_a036b2c14552fbca49011c3d0e78017fa"><div class="ttname"><a href="structripple_1_1RPC_1_1JsonContext.html#a036b2c14552fbca49011c3d0e78017fa">ripple::RPC::JsonContext::params</a></div><div class="ttdeci">Json::Value params</div><div class="ttdef"><b>Definition</b> <a href="Context_8h_source.html#l00044">Context.h:44</a></div></div>
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