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<li class="navelem"><a class="el" href="dir_df9c78dcf3f59a33b12284f95992a64b.html">ripple</a></li><li class="navelem"><a class="el" href="dir_f4afb74df24474efa0cc7e8ea3ddd5ce.html">rpc</a></li><li class="navelem"><a class="el" href="dir_72652aacd0eb4ee32af795650dd02b37.html">handlers</a></li> </ul>
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<div class="title">LedgerDiff.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#include <ripple/rpc/GRPCHandlers.h></span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#include <ripple/rpc/impl/RPCHelpers.h></span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <a class="codeRef" href="http://en.cppreference.com/w/cpp/utility/pair.html">std::pair<org::xrpl::rpc::v1::GetLedgerDiffResponse, grpc::Status></a></div>
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<div class="line"><a name="l00006"></a><span class="lineno"><a class="line" href="namespaceripple.html#aeaa95680c026e10fbdfbbb02300f89b8"> 6</a></span> <a class="code" href="namespaceripple.html#aeaa95680c026e10fbdfbbb02300f89b8">doLedgerDiffGrpc</a>(</div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  <a class="code" href="structripple_1_1RPC_1_1GRPCContext.html">RPC::GRPCContext<org::xrpl::rpc::v1::GetLedgerDiffRequest></a>& context)</div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> {</div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  org::xrpl::rpc::v1::GetLedgerDiffRequest& request = context.<a class="code" href="structripple_1_1RPC_1_1GRPCContext.html#af072cfd1412032444cefd2f4dcf29555">params</a>;</div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  org::xrpl::rpc::v1::GetLedgerDiffResponse response;</div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  grpc::Status status = grpc::Status::OK;</div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<ReadView const></a> baseLedgerRv;</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<ReadView const></a> desiredLedgerRv;</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceripple_1_1RPC.html#aaf2f3f7b2146f293d76f09249d86334f">RPC::ledgerFromSpecifier</a>(baseLedgerRv, request.base_ledger(), context))</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  grpc::Status errorStatus{</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  grpc::StatusCode::NOT_FOUND, <span class="stringliteral">"base ledger not found"</span>};</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">return</span> {response, errorStatus};</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  }</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceripple_1_1RPC.html#aaf2f3f7b2146f293d76f09249d86334f">RPC::ledgerFromSpecifier</a>(</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  desiredLedgerRv, request.desired_ledger(), context))</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  grpc::Status errorStatus{</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  grpc::StatusCode::NOT_FOUND, <span class="stringliteral">"desired ledger not found"</span>};</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> {response, errorStatus};</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  }</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Ledger const></a> baseLedger =</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  std::dynamic_pointer_cast<Ledger const>(baseLedgerRv);</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">if</span> (!baseLedger)</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  {</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  grpc::Status errorStatus{</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  grpc::StatusCode::NOT_FOUND, <span class="stringliteral">"base ledger not validated"</span>};</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">return</span> {response, errorStatus};</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/memory/shared_ptr.html">std::shared_ptr<Ledger const></a> desiredLedger =</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  std::dynamic_pointer_cast<Ledger const>(desiredLedgerRv);</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (!desiredLedger)</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  grpc::Status errorStatus{</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  grpc::StatusCode::NOT_FOUND, <span class="stringliteral">"base ledger not validated"</span>};</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> {response, errorStatus};</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="codeRef" href="http://en.cppreference.com/w/cpp/container/map.html">SHAMap::Delta</a> differences;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">int</span> maxDifferences = <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/numeric_limits/max.html">std::numeric_limits<int>::max</a>();</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">bool</span> res = baseLedger-><a class="code" href="classripple_1_1Ledger.html#ab63abcfcbba33c67bb15284381555313">stateMap</a>().<a class="code" href="classripple_1_1SHAMap.html#a09a39196247b7d775f001db67eb37882">compare</a>(</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  desiredLedger-><a class="code" href="classripple_1_1Ledger.html#ab63abcfcbba33c67bb15284381555313">stateMap</a>(), differences, maxDifferences);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (!res)</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  grpc::Status errorStatus{</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  grpc::StatusCode::RESOURCE_EXHAUSTED,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="stringliteral">"too many differences between specified ledgers"</span>};</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> {response, errorStatus};</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& [k, v] : differences)</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">auto</span> diff = response.mutable_ledger_objects()->add_objects();</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">auto</span> inBase = v.first;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">auto</span> inDesired = v.second;</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// key does not exist in desired</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (!inDesired)</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  diff->set_key(k.data(), k.size());</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">else</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  assert(inDesired->size() > 0);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  diff->set_key(k.data(), k.size());</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (request.include_blobs())</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  diff->set_data(inDesired->data(), inDesired->size());</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> {response, status};</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> } <span class="comment">// namespace ripple</span></div>
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</div><!-- fragment --></div><!-- contents -->
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<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 class="ttdoc">STL class.</div></div>
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<div class="ttc" id="aclassripple_1_1Ledger_html_ab63abcfcbba33c67bb15284381555313"><div class="ttname"><a href="classripple_1_1Ledger.html#ab63abcfcbba33c67bb15284381555313">ripple::Ledger::stateMap</a></div><div class="ttdeci">SHAMap const & stateMap() const</div><div class="ttdef"><b>Definition:</b> <a href="Ledger_8h_source.html#l00310">Ledger.h:310</a></div></div>
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<div class="ttc" id="astructripple_1_1RPC_1_1GRPCContext_html"><div class="ttname"><a href="structripple_1_1RPC_1_1GRPCContext.html">ripple::RPC::GRPCContext</a></div><div class="ttdef"><b>Definition:</b> <a href="Context_8h_source.html#l00070">Context.h:70</a></div></div>
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<div class="ttc" id="amap_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/container/map.html">std::map</a></div><div class="ttdoc">STL class.</div></div>
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<div class="ttc" id="astructripple_1_1RPC_1_1GRPCContext_html_af072cfd1412032444cefd2f4dcf29555"><div class="ttname"><a href="structripple_1_1RPC_1_1GRPCContext.html#af072cfd1412032444cefd2f4dcf29555">ripple::RPC::GRPCContext::params</a></div><div class="ttdeci">RequestType params</div><div class="ttdef"><b>Definition:</b> <a href="Context_8h_source.html#l00072">Context.h:72</a></div></div>
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<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="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
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<div class="ttc" id="anamespaceripple_1_1RPC_html_aaf2f3f7b2146f293d76f09249d86334f"><div class="ttname"><a href="namespaceripple_1_1RPC.html#aaf2f3f7b2146f293d76f09249d86334f">ripple::RPC::ledgerFromSpecifier</a></div><div class="ttdeci">Status ledgerFromSpecifier(T &ledger, org::xrpl::rpc::v1::LedgerSpecifier const &specifier, Context &context)</div><div class="ttdef"><b>Definition:</b> <a href="RPCHelpers_8cpp_source.html#l00420">RPCHelpers.cpp:420</a></div></div>
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<div class="ttc" id="aclassripple_1_1SHAMap_html_a09a39196247b7d775f001db67eb37882"><div class="ttname"><a href="classripple_1_1SHAMap.html#a09a39196247b7d775f001db67eb37882">ripple::SHAMap::compare</a></div><div class="ttdeci">bool compare(SHAMap const &otherMap, Delta &differences, int maxCount) const</div><div class="ttdef"><b>Definition:</b> <a href="SHAMapDelta_8cpp_source.html#l00124">SHAMapDelta.cpp:124</a></div></div>
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<div class="ttc" id="amax_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/numeric_limits/max.html">std::numeric_limits::max</a></div><div class="ttdeci">T max(T... args)</div></div>
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