Pepijn Noltes created CELIX-441: ----------------------------------- Summary: Add service tracker api to bundle context Key: CELIX-441 URL: https://issues.apache.org/jira/browse/CELIX-441 Project: Celix Issue Type: Improvement Components: Framework Affects Versions: 2.3.0 Reporter: Pepijn Noltes
To make the use of service trackers easier integrate a service tracker API directly on the bundle context. The service tracker should be stored in the bundle context and automatically be closed and destroy when the bundle is respectively stopped / destroyed. Proposed API: /** * track service for the provided serviceName and/or filter. * The highest ranking services will used for the callback. * If a new and higher ranking services the callback with be called again with the new service. * If a service is removed a the callback with be called with next highest ranking service or NULL as service. * * @param ctx The bundle context. * @param serviceName Optional the service name to track * @param serviceVersionRange Optional the service version range to track * @param filter Optional the LDAP filter to use * @param data The data pointer, which will be used in the callbacks * @param setting The callback, which will be called when a new highest ranking service is set. * @return the tracker uuid or null uuid (uuid_is_null) if unsuccessful. */ uuid_t bundleContext_trackService( bundle_context_t* mod, const char* serviceName, const char* serviceVersionRange, const char* filter, void* data, int (*setting)(void* data, void* svc) ); /** * track services for the provided serviceName and/or filter. * * @param ctx The bundle context. * @param serviceName Optional the service name to track * @param serviceVersionRange Optional the service version range to track * @param filter Optional the LDAP filter to use * @param data The data pointer, which will be used in the callbacks * @param adding The callback, which will be called when service is added. * @param removing The callback, which will be called when a service is removed * @return the tracker uuid or null uuid (uuid_is_null) if unsuccessful. */ uuid_t bundleContext_trackServices( bundle_context_t* ctx, const char* serviceName, const char* serviceVersionRange, const char* filter, void* data, int (*adding)(void* data, void* svc), int (*removing)(void* data, void* svc) ); typedef struct celix_service_tracker_options { //service filter options const char* serviceName; const char* serviceVersionRange; const char* filter; const char* lang; //NULL -> 'CELIX_LANG_C' //callback options void* callbackHandle; int (*onSettingFp)(void *handle, void *svc); //highest ranking int (*onAddingFp)(void *handle, void *svc); int (*onRemovingFp)(void *handle, void *svc); int (*onSettingWithProperties)(void *handle, properties_t *props, void *svc); //highest ranking int (*onAddingWithProperties)(void *handle, properties_t *props, void *svc); int (*onRemovingWithProperties)(void *handle, properties_t *props, void *svc); int (*onSettingWithOwner)(void *handle, bundle_t *owner, properties_t *props, void *svc); //highest ranking int (*onAddingWithOwner)(void *handle, bundle_t *owner, properties_t *props, void *svc); int (*onRemovingWithOwner)(void *handle, bundle_t *owner, properties_t *props, void *svc); } celix_service_tracker_options; /** * Tracks services using the provided tracker options. * The tracker options are only using during this call and can safely be freed/reused after this call returns. * * @param ctx The module context. * @param opts The pointer to the tracker options. * @return the tracker uuid or null uuid (uuid_is_null) if unsuccessful. */ uint64_t bundleContext_trackServicesWithOptions(bundle_context_t *ctx, const celix_service_tracker_options *opts); //shortcut could be const celix_service_tracker_options opts = {0}; /** * Stop the tracker with the provided track id. * Only works for the trackers owned by the bundle of the bundle context. * * @return CELIX_SUCCESS if the tracker is stopped correctly. */ int bundleContext_stopTracking(bundle_context_t *ctx, uuid_t trackerId); -- This message was sent by Atlassian JIRA (v7.6.3#76005)