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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_0103a8ad82dcc2c51f5cde661b4b5cb7.html">xrpl</a></li><li class="navelem"><a class="el" href="dir_e1b4f750ea5d02d697bca882e10403c3.html">nodestore</a></li> </ul>
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<div class="headertitle"><div class="title">DatabaseRotating.h</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">#ifndef XRPL_NODESTORE_DATABASEROTATING_H_INCLUDED</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define XRPL_NODESTORE_DATABASEROTATING_H_INCLUDED</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;xrpl/nodestore/Database.h&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="keyword">namespace </span>NodeStore {</div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">/* This class has two key-value store Backend objects for persisting SHAMap</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment"> * records. This facilitates online deletion of data. New backends are</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> * rotated in. Old ones are rotated out and deleted.</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment"> */</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </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="classripple_1_1NodeStore_1_1DatabaseRotating.html"> 14</a></span><span class="keyword">class </span><a class="code hl_class" href="classripple_1_1NodeStore_1_1DatabaseRotating.html">DatabaseRotating</a> : <span class="keyword">public</span> <a class="code hl_class" href="classripple_1_1NodeStore_1_1Database.html">Database</a></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="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00017" data-start="{" data-end="}">
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a9575132eef9af0001fec07684a2434cd"> 17</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a9575132eef9af0001fec07684a2434cd">DatabaseRotating</a>(</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> <a class="code hl_class" href="classripple_1_1NodeStore_1_1Scheduler.html">Scheduler</a>&amp; scheduler,</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> <span class="keywordtype">int</span> readThreads,</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <a class="code hl_class" href="classripple_1_1Section.html">Section</a> <span class="keyword">const</span>&amp; config,</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <a class="code hl_class" href="classbeast_1_1Journal.html">beast::Journal</a> journal)</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> : <a class="code hl_class" href="classripple_1_1NodeStore_1_1Database.html">Database</a>(scheduler, readThreads, config, journal)</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> }</div>
</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a6f01b2e1b8281065d791c149c912bb38"> 34</a></span> <a class="code hl_function" href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a6f01b2e1b8281065d791c149c912bb38">rotate</a>(</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/memory/unique_ptr.html">std::unique_ptr&lt;NodeStore::Backend&gt;</a>&amp;&amp; newBackend,</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/utility/functional/function.html">std::function</a>&lt;<span class="keywordtype">void</span>(</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; writableName,</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a> <span class="keyword">const</span>&amp; archiveName)&gt; <span class="keyword">const</span>&amp; f) = 0;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span>};</div>
</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span>} <span class="comment">// namespace NodeStore</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>} <span class="comment">// namespace ripple</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="abasic_string_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/string/basic_string.html">std::string</a></div></div>
<div class="ttc" id="aclassbeast_1_1Journal_html"><div class="ttname"><a href="classbeast_1_1Journal.html">beast::Journal</a></div><div class="ttdoc">A generic endpoint for log messages.</div><div class="ttdef"><b>Definition</b> <a href="Journal_8h_source.html#l00040">Journal.h:41</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1DatabaseRotating_html"><div class="ttname"><a href="classripple_1_1NodeStore_1_1DatabaseRotating.html">ripple::NodeStore::DatabaseRotating</a></div><div class="ttdef"><b>Definition</b> <a href="DatabaseRotating_8h_source.html#l00014">DatabaseRotating.h:15</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1DatabaseRotating_html_a6f01b2e1b8281065d791c149c912bb38"><div class="ttname"><a href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a6f01b2e1b8281065d791c149c912bb38">ripple::NodeStore::DatabaseRotating::rotate</a></div><div class="ttdeci">virtual void rotate(std::unique_ptr&lt; NodeStore::Backend &gt; &amp;&amp;newBackend, std::function&lt; void(std::string const &amp;writableName, std::string const &amp;archiveName)&gt; const &amp;f)=0</div><div class="ttdoc">Rotates the backends.</div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1DatabaseRotating_html_a9575132eef9af0001fec07684a2434cd"><div class="ttname"><a href="classripple_1_1NodeStore_1_1DatabaseRotating.html#a9575132eef9af0001fec07684a2434cd">ripple::NodeStore::DatabaseRotating::DatabaseRotating</a></div><div class="ttdeci">DatabaseRotating(Scheduler &amp;scheduler, int readThreads, Section const &amp;config, beast::Journal journal)</div><div class="ttdef"><b>Definition</b> <a href="DatabaseRotating_8h_source.html#l00017">DatabaseRotating.h:17</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Database_html"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Database.html">ripple::NodeStore::Database</a></div><div class="ttdoc">Persistency layer for NodeObject.</div><div class="ttdef"><b>Definition</b> <a href="Database_8h_source.html#l00031">Database.h:32</a></div></div>
<div class="ttc" id="aclassripple_1_1NodeStore_1_1Scheduler_html"><div class="ttname"><a href="classripple_1_1NodeStore_1_1Scheduler.html">ripple::NodeStore::Scheduler</a></div><div class="ttdoc">Scheduling for asynchronous backend activity.</div><div class="ttdef"><b>Definition</b> <a href="include_2xrpl_2nodestore_2Scheduler_8h_source.html#l00042">include/xrpl/nodestore/Scheduler.h:43</a></div></div>
<div class="ttc" id="aclassripple_1_1Section_html"><div class="ttname"><a href="classripple_1_1Section.html">ripple::Section</a></div><div class="ttdoc">Holds a collection of configuration values.</div><div class="ttdef"><b>Definition</b> <a href="BasicConfig_8h_source.html#l00025">BasicConfig.h:26</a></div></div>
<div class="ttc" id="afunction_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/utility/functional/function.html">std::function</a></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="aunique_ptr_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/memory/unique_ptr.html">std::unique_ptr</a></div></div>
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