Datadog C++ Tracing Library

#include <datadog/tracer.h>
#include <datadog/tracer_config.h>

#include <chrono>
#include <iostream>
#include <thread>

int main() {
    namespace dd = datadog::tracing;

    dd::TracerConfig config;
    config.service = "my-service";

    const auto validated_config = dd::finalize_config(config);
    if (!validated_config) {
        std::cerr << validated_config.error() << '\n';
        return 1;
    }

    dd::Tracer tracer{*validated_config};
    dd::SpanConfig options;
    
    options.name = "parent";
    dd::Span parent = tracer.create_span(options);

    std::this_thread::sleep_for(std::chrono::seconds(1));

    options.name = "child";
    dd::Span child = parent.create_child(options);
    child.set_tag("foo", "bar");

    std::this_thread::sleep_for(std::chrono::seconds(2));
}

Build

`cmake && make && make install` Style Build

Build this library from source using CMake. Installation places a shared library and public headers into the appropriate system directories (/usr/local/[...]), or to a specified installation prefix.

A recent version of CMake is required (3.24), which might not be in your system's package manager. bin/install-cmake is an installer for a recent CMake.

dd-trace-cpp requires a C++17 compiler.

Here is how to install dd-trace-cpp into .install/ within the source repository.

$ git clone 'https://github.com/datadog/dd-trace-cpp'
$ cd dd-trace-cpp
$ bin/install-cmake
$ mkdir .install
$ mkdir .build
$ cd .build
$ cmake -DCMAKE_INSTALL_PREFIX=../.install ..
$ make -j $(nproc)
$ make install
$ find ../.install -type d

To instead install into /usr/local/, omit the .install directory and the -DCMAKE_INSTALL_PREFIX=../.install option.

Then, when building an executable that uses dd-trace-cpp, specify the path to the installed headers using an appropriate -I option. If the library was installed into the default system directories, then the -I option is not needed.

$ c++ -I/path/to/dd-trace-cpp/.install/include -c -o my_app.o my_app.cpp

When linking an executable that uses dd-trace-cpp, specify linkage to the built library using the -ldd_trace_cpp option and an appropriate -L option. If the library was installed into the default system directories, then the -L options is not needed. The -ldd_trace_cpp option is always needed.

$ c++ -o my_app my_app.o -L/path/to/dd-trace-cpp/.install/lib -ldd_trace_cpp

Test

Pass -DBUILD_TESTING=1 to cmake to include the unit tests in the build.

The resulting unit test executable is test/tests within the build directory.

$ mkdir .build
$ cd .build
$ cmake -DBUILD_TESTING=1 ..
$ make -j $(nproc)
$ ./test/tests

Alternatively, bin/test is provided for convenience.

The most recent code coverage report is available here.

Contributing

See the contributing guidelines.

License

cataphract/dd-trace-cpp

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