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| <div class="textblock"><p><a class="anchor" id="md__r_e_a_d_m_e"></a> </p> |
| <h1>Pulsar C++ client library</h1> |
| <p>Pulsar C++ clients support a variety of Pulsar features to enable building applications connecting to your Pulsar cluster.</p> |
| <p>For the supported Pulsar features, see <a href="https://pulsar.apache.org/client-feature-matrix/">Client Feature Matrix</a>.</p> |
| <p>For how to use APIs to publish and consume messages, see <a href="https://github.com/apache/pulsar-client-cpp/tree/main/examples">examples</a>.</p> |
| <h2>Import the library into your project</h2> |
| <h3>CMake with vcpkg integration</h3> |
| <p>Navigate to <a href="./vcpkg-example">vcpkg-example</a> for how to import the <span class="tt">pulsar-client-cpp</span> into your project via vcpkg.</p> |
| <h3>Download pre-built binaries</h3> |
| <p>For non-vcpkg projects, you can download pre-built binaries from the <a href="https://pulsar.apache.org/download/#pulsar-c-client">official release page</a>.</p> |
| <h2>Generate the API documents</h2> |
| <p>Pulsar C++ client uses <a href="https://www.doxygen.nl">doxygen</a> to build API documents. After installing <span class="tt">doxygen</span>, you only need to run <span class="tt">doxygen</span> to generate the API documents whose main page is under the <span class="tt">doxygen/html/index.html</span> path.</p> |
| <h2>Build with vcpkg</h2> |
| <p>Since it's integrated with vcpkg, see <a href="https://github.com/microsoft/vcpkg#readme">vcpkg#README</a> for the requirements. See LEGACY_BUILD if you want to manage dependencies by yourself or you cannot install vcpkg in your own environment.</p> |
| <h3>How to build from source</h3> |
| <p>The simplest way is to clone this project with the vcpkg submodule.</p> |
| <div class="fragment"><div class="line">git clone https://github.com/apache/pulsar-client-cpp.git</div> |
| <div class="line">cd pulsar-client-cpp</div> |
| <div class="line">git submodule update --init --recursive</div> |
| <div class="line">cmake -B build -DINTEGRATE_VCPKG=ON</div> |
| <div class="line">cmake --build build -j8</div> |
| </div><!-- fragment --><blockquote class="doxtable"> |
| <ul> |
| <li>Before 4.0.0, C++11 is required.</li> |
| <li>Since 4.0.0, C++17 is required. </li> |
| </ul> |
| </blockquote> |
| <p>The 1st step will download vcpkg and then install all dependencies according to the version description in <a href="./vcpkg.json">vcpkg.json</a>. The 2nd step will build the Pulsar C++ libraries under <span class="tt">./build/lib/</span>, where <span class="tt">./build</span> is the CMake build directory.</p> |
| <blockquote class="doxtable"> |
| <p>You can also add the CMAKE_TOOLCHAIN_FILE option if your system already have vcpkg installed.</p> |
| <div class="fragment"><div class="line">git clone https://github.com/apache/pulsar-client-cpp.git</div> |
| <div class="line">cd pulsar-client-cpp</div> |
| <div class="line"># For example, you can install vcpkg in /tmp/vcpkg</div> |
| <div class="line">cd /tmp && git clone https://github.com/microsoft/vcpkg.git && cd -</div> |
| <div class="line">cmake -B build -DINTEGRATE_VCPKG=ON -DCMAKE_TOOLCHAIN_FILE="/tmp/vcpkg/scripts/buildsystems/vcpkg.cmake"</div> |
| <div class="line">cmake --build build -j8</div> |
| </div><!-- fragment --> </blockquote> |
| <p>After the build, the hierarchy of the <span class="tt">build</span> directory will be:</p> |
| <div class="fragment"><div class="line">build/</div> |
| <div class="line"> include/ -- extra C++ headers</div> |
| <div class="line"> lib/ -- libraries</div> |
| <div class="line"> tests/ -- test executables</div> |
| <div class="line"> examples/ -- example executables</div> |
| <div class="line"> generated/</div> |
| <div class="line"> lib/ -- protobuf source files for PulsarApi.proto</div> |
| <div class="line"> tests/ -- protobuf source files for *.proto used in tests</div> |
| </div><!-- fragment --><h3>How to install</h3> |
| <p>To install the C++ headers and libraries into a specific path, e.g. <span class="tt">/tmp/pulsar</span>, run the following commands:</p> |
| <div class="fragment"><div class="line">cmake -B build -DINTEGRATE_VCPKG=ON -DCMAKE_INSTALL_PREFIX=/tmp/pulsar</div> |
| <div class="line">cmake --build build -j8 --target install</div> |
| </div><!-- fragment --><p>For example, on macOS you will see:</p> |
| <div class="fragment"><div class="line">/tmp/pulsar/</div> |
| <div class="line"> include/pulsar -- C/C++ headers</div> |
| <div class="line"> lib/</div> |
| <div class="line"> libpulsar.a -- Static library</div> |
| <div class="line"> libpulsar.dylib -- Dynamic library</div> |
| </div><!-- fragment --><h3>Tests</h3> |
| <p>Tests are built by default. You should execute <a href="./run-unit-tests.sh">run-unit-tests.sh</a> to run tests locally.</p> |
| <p>If you don't want to build the tests, disable the <span class="tt">BUILD_TESTS</span> option:</p> |
| <div class="fragment"><div class="line">cmake -B build -DINTEGRATE_VCPKG=ON -DBUILD_TESTS=OFF</div> |
| <div class="line">cmake --build build -j8</div> |
| </div><!-- fragment --><h3>Build perf tools</h3> |
| <p>If you want to build the perf tools, enable the <span class="tt">BUILD_PERF_TOOLS</span> option:</p> |
| <div class="fragment"><div class="line">cmake -B build -DINTEGRATE_VCPKG=ON -DBUILD_PERF_TOOLS=ON</div> |
| <div class="line">cmake --build build -j8</div> |
| </div><!-- fragment --><p>Then the perf tools will be built under <span class="tt">./build/perf/</span>.</p> |
| <h2>Platforms</h2> |
| <p>Pulsar C++ Client Library has been tested on:</p> |
| <ul> |
| <li>Linux</li> |
| <li>Mac OS X</li> |
| <li>Windows x64</li> |
| </ul> |
| <h2>Wireshark Dissector</h2> |
| <p>See the <a href="wireshark/">wireshark</a> directory for details.</p> |
| <h2>Requirements for Contributors</h2> |
| <p>It's required to install <a href="https://llvm.org/builds/">LLVM</a> for <span class="tt">clang-tidy</span> and <span class="tt">clang-format</span>. Pulsar C++ client use <span class="tt">clang-format</span> <b>11</b> to format files. <span class="tt">make format</span> automatically formats the files.</p> |
| <p>For Ubuntu users, you can install <span class="tt">clang-format-11</span> via <span class="tt">apt install clang-format-11</span>. For other users, run <span class="tt">./build-support/docker-format.sh</span> if you have Docker installed.</p> |
| <p>We welcome contributions from the open source community, kindly make sure your changes are backward compatible with GCC 4.8 and Boost 1.53.</p> |
| <p>If your contribution adds Pulsar features for C++ clients, you need to update both the <a href="https://pulsar.apache.org/docs/client-libraries/">Pulsar docs</a> and the <a href="https://pulsar.apache.org/client-feature-matrix/">Client Feature Matrix</a>. See <a href="https://pulsar.apache.org/contribute/site-intro/#pages">Contribution Guide</a> for more details. </p> |
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