Intro

Apache Celix is a framework for C and C++14 to develop dynamic modular software applications using component and in-process service-oriented programming. Apache Celix is inspired by the OSGi specification and adapted to C and C++.

Bundles

The main way to use Celix is by creating dynamic modules named bundles.

An Apache Celix Bundle contains a collection of shared libraries, configuration files and optional an activation entry combined in a zip file. Bundles can be dynamically installed and started in an Apache Celix framework.

When a bundle is started a C or C++ bundle context will be injected in the bundle activator.

C Bundle Activator

#include <celix_api.h>
 
typedef struct activator_data {
    /*intentional empty*/
} activator_data_t;
 
static celix_status_t activator_start(activator_data_t *data, celix_bundle_context_t *ctx) {
    //use the bundle context ctx to activate the bundle
    return CELIX_SUCCESS;
}
 
static celix_status_t activator_stop(activator_data_t *data, celix_bundle_context_t *ctx) {
    //use the bundle context ctx to cleanup
    return CELIX_SUCCESS;
}
 
CELIX_GEN_BUNDLE_ACTIVATOR(activator_data_t, activator_start, activator_stop)

C++ Bundle Activator

#include <celix/BundleActivator.h>
 
class MyBundleActivator {
public:
    explicit MyBundleActivator(const std::shared_ptr<celix::BundleContext>& ctx) {
        //use the bundle context ctx to activate the bundle
    }
};
 
CELIX_GEN_CXX_BUNDLE_ACTIVATOR(MyBundleActivator)

C API

See include/celix_bundle_context.h as a starting point for the C API.

C++ API

See celix::BundleContext as a starting point for the C++ API.