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| <h1 id="etcdlib">Etcdlib</h1> |
| <p>etcd is a distributed, consistent key-value store for shared configuration and service discovery, part of the CoreOS project.</p> |
| <p>This repository provides a library for etcd for C applications. |
| It uses the v2 (REST) api of etcd.</p> |
| <p>Etcdlib can be used as part of Celix but is also usable stand-alone.</p> |
| <h2 id="preparing">Preparing</h2> |
| <p>The following packages (libraries + headers) should be installed on your system:</p> |
| <ul> |
| <li> |
| <p>Development Environment</p> |
| <ul> |
| <li>build-essentials (gcc/g++ or clang/clang++)</li> |
| <li>cmake (3.2 or higher)</li> |
| </ul> |
| </li> |
| <li> |
| <p>Etcdlib Dependencies</p> |
| <ul> |
| <li>curl</li> |
| <li>jansson</li> |
| </ul> |
| </li> |
| </ul> |
| <h2 id="download-the-apache-celix-sources">Download the Apache Celix sources</h2> |
| <p>To get started you first have to download the Apache Celix sources. This can be done by cloning the Apache Celix git repository:</p> |
| <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#080;font-style:italic"># Create a new workspace to work in, e.g:</span> |
| </span></span><span style="display:flex;"><span>mkdir -p <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">HOME</span><span style="color:#b68;font-weight:bold">}</span>/workspace |
| </span></span><span style="display:flex;"><span><span style="color:#a2f">export</span> <span style="color:#b8860b">WS</span><span style="color:#666">=</span><span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">HOME</span><span style="color:#b68;font-weight:bold">}</span>/workspace |
| </span></span><span style="display:flex;"><span><span style="color:#a2f">cd</span> <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">WS</span><span style="color:#b68;font-weight:bold">}</span> |
| </span></span><span style="display:flex;"><span> |
| </span></span><span style="display:flex;"><span><span style="color:#080;font-style:italic"># clone the repro</span> |
| </span></span><span style="display:flex;"><span>git clone --single-branch --branch master https://github.com/apache/celix.git |
| </span></span></code></pre></div><h2 id="building">Building</h2> |
| <p>Etcdlib uses <a href="https://cmake.org">CMake</a> as build system. CMake can generate (among others) makefiles or ninja build files. Using ninja build files will result in a faster build.</p> |
| <h3 id="building-using-cmake-and-makefiles">Building using CMake and makefiles:</h3> |
| <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#a2f">cd</span> <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">WS</span><span style="color:#b68;font-weight:bold">}</span>/celix/etcdlib |
| </span></span><span style="display:flex;"><span>mkdir build |
| </span></span><span style="display:flex;"><span><span style="color:#a2f">cd</span> build |
| </span></span><span style="display:flex;"><span>cmake .. |
| </span></span><span style="display:flex;"><span>make |
| </span></span></code></pre></div><h3 id="building-using-cmake-and-ninja">Building using CMake and Ninja</h3> |
| <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#a2f">cd</span> <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">WS</span><span style="color:#b68;font-weight:bold">}</span>/celix/etcdlib |
| </span></span><span style="display:flex;"><span>mkdir build |
| </span></span><span style="display:flex;"><span><span style="color:#a2f">cd</span> build |
| </span></span><span style="display:flex;"><span>cmake -G Ninja .. |
| </span></span><span style="display:flex;"><span>ninja |
| </span></span></code></pre></div><h2 id="editing-build-options">Editing Build options</h2> |
| <p>With use of CMake, Etcdlib makes it possible to edit build options. This enabled users, among other options, to configure a install location. |
| To edit the options use ccmake or cmake-gui. For cmake-gui an additional package install can be necessary (Fedora: <code>dnf install cmake-gui</code>).</p> |
| <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#a2f">cd</span> <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">WS</span><span style="color:#b68;font-weight:bold">}</span>/celix/etcdlib/build |
| </span></span><span style="display:flex;"><span>ccmake . |
| </span></span><span style="display:flex;"><span><span style="color:#080;font-style:italic"># Edit the CMAKE_INSTALL_PREFIX config to set the install location</span> |
| </span></span></code></pre></div><p>For this guide we assume the CMAKE_INSTALL_PREFIX is <code>/usr/local</code>.</p> |
| <h2 id="installing-etcdlib">Installing Etcdlib</h2> |
| <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#a2f">cd</span> <span style="color:#b68;font-weight:bold">${</span><span style="color:#b8860b">WS</span><span style="color:#b68;font-weight:bold">}</span>/celix/etcdlib/build |
| </span></span><span style="display:flex;"><span>make |
| </span></span><span style="display:flex;"><span>sudo make install |
| </span></span></code></pre></div> |
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