event_admin/event_handler/private/src/event_handler_activator.c

/**
 *Licensed to the Apache Software Foundation (ASF) under one
 *or more contributor license agreements.  See the NOTICE file
 *distributed with this work for additional information
 *regarding copyright ownership.  The ASF licenses this file
 *to you under the Apache License, Version 2.0 (the
 *"License"); you may not use this file except in compliance
 *with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *Unless required by applicable law or agreed to in writing,
 *software distributed under the License is distributed on an
 *"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 *specific language governing permissions and limitations
 *under the License.
 */
/*
 * event_handler_activator.c
 *
 * Created on: Jul 9, 2013
 * \author    	<a href="mailto:dev@celix.apache.org">Apache Celix Project Team</a>
 * \copyright	Apache License, Version 2.0
 */
#include <stdlib.h>



#include "event_handler_impl.h"

static const char * const EVENT_HANDLER_NAME = "demo";
struct activator {
	event_handler_service_pt event_handler_service;
	service_registration_pt registration;
};

celix_status_t bundleActivator_create(bundle_context_pt context, void **userData) {
	celix_status_t status = CELIX_SUCCESS;
	struct activator *activator;

    activator = calloc(1, sizeof(*activator));
    activator->registration = NULL;
    *userData = activator;

    event_handler_pt event_handler = NULL;
    event_handler_service_pt event_handler_service = NULL;

    status = eventHandlerCreate(context, &event_handler);
    if (status == CELIX_SUCCESS) {
        event_handler_service = calloc(1, sizeof(*event_handler_service));
        if (!event_handler_service) {
            status = CELIX_ENOMEM;
        } else {
            event_handler_service->event_handler = event_handler;
            event_handler_service->handle_event = eventHandlerHandleEvent;
		}
	}
    activator->event_handler_service = event_handler_service;


    return status;
}

celix_status_t bundleActivator_start(void * userData, bundle_context_pt context) {
	celix_status_t status = CELIX_SUCCESS;
	struct activator *activator = userData;

	properties_pt properties = NULL;
	properties = properties_create();
    properties_set(properties, (char *) EVENT_HANDLER_SERVICE, (const char *) EVENT_HANDLER_NAME);
    properties_set(properties, (char *) EVENT_TOPIC, (const char *) "log/error");

	event_handler_service_pt event_handler_service = activator->event_handler_service;
    bundleContext_registerService(context, (char *) EVENT_HANDLER_SERVICE, event_handler_service, properties,
                                  &activator->registration);
	return status;
}

celix_status_t bundleActivator_stop(void * userData, bundle_context_pt context) {
	celix_status_t status = CELIX_SUCCESS;
    struct activator *data = userData;
    serviceRegistration_unregister(data->registration);
	return status;
}


celix_status_t bundleActivator_destroy(void * userData, bundle_context_pt context) {
	celix_status_t status = CELIX_SUCCESS;
    struct activator *data = userData;
    eventHandlerDestroy(&(data->event_handler_service)->event_handler);
	return status;
}