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service_registration.c
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service_registration.c
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/*
* 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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "service_registration_private.h"
#include "celix_constants.h"
#include "celix_build_assert.h"
static void serviceRegistration_destroy(struct celix_ref *);
static celix_status_t serviceRegistration_initializeProperties(service_registration_pt registration, properties_pt properties);
static celix_status_t serviceRegistration_createInternal(registry_callback_t callback, bundle_pt bundle, const char* serviceName, unsigned long serviceId,
const void * serviceObject, properties_pt dictionary, enum celix_service_type svcType, service_registration_pt *registration);
service_registration_pt serviceRegistration_create(registry_callback_t callback, bundle_pt bundle, const char* serviceName, unsigned long serviceId, const void * serviceObject, properties_pt dictionary) {
service_registration_pt registration = NULL;
serviceRegistration_createInternal(callback, bundle, serviceName, serviceId, serviceObject, dictionary, CELIX_PLAIN_SERVICE, ®istration);
return registration;
}
service_registration_pt serviceRegistration_createServiceFactory(registry_callback_t callback, bundle_pt bundle, const char* serviceName, unsigned long serviceId, const void * serviceObject, properties_pt dictionary) {
service_registration_pt registration = NULL;
serviceRegistration_createInternal(callback, bundle, serviceName, serviceId, serviceObject, dictionary, CELIX_DEPRECATED_FACTORY_SERVICE, ®istration);
return registration;
}
static celix_status_t serviceRegistration_createInternal(registry_callback_t callback, bundle_pt bundle, const char* serviceName, unsigned long serviceId,
const void * serviceObject, properties_pt dictionary, enum celix_service_type svcType, service_registration_pt *out) {
celix_status_t status = CELIX_SUCCESS;
service_registration_pt reg = calloc(1, sizeof(*reg));
if (reg) {
celix_ref_init(®->refCount);
reg->callback = callback;
reg->svcType = svcType;
reg->className = strndup(serviceName, 1024*10);
reg->bundle = bundle;
reg->serviceId = serviceId;
reg->svcObj = serviceObject;
reg->isUnregistering = false;
celixThreadRwlock_create(®->lock, NULL);
celixThreadRwlock_writeLock(®->lock);
serviceRegistration_initializeProperties(reg, dictionary);
celixThreadRwlock_unlock(®->lock);
} else {
status = CELIX_ENOMEM;
}
if (status == CELIX_SUCCESS) {
*out = reg;
}
return status;
}
void serviceRegistration_retain(service_registration_pt registration) {
celix_ref_get(®istration->refCount);
}
void serviceRegistration_release(service_registration_pt registration) {
celix_ref_put(®istration->refCount, serviceRegistration_destroy);
}
static void serviceRegistration_destroy(struct celix_ref *refCount) {
service_registration_pt registration = (service_registration_pt )refCount;
CELIX_BUILD_ASSERT(offsetof(service_registration_t, refCount) == 0);
//fw_log(logger, CELIX_LOG_LEVEL_DEBUG, "Destroying service registration %p\n", registration);
free(registration->className);
registration->className = NULL;
registration->callback.unregister = NULL;
properties_destroy(registration->properties);
celixThreadRwlock_destroy(®istration->lock);
free(registration);
}
static celix_status_t serviceRegistration_initializeProperties(service_registration_pt registration, properties_pt dictionary) {
char sId[32];
if (dictionary == NULL) {
dictionary = properties_create();
}
snprintf(sId, 32, "%lu", registration->serviceId);
properties_set(dictionary, (char *) OSGI_FRAMEWORK_SERVICE_ID, sId);
if (properties_get(dictionary, (char *) OSGI_FRAMEWORK_OBJECTCLASS) == NULL) {
properties_set(dictionary, (char *) OSGI_FRAMEWORK_OBJECTCLASS, registration->className);
}
registration->properties = dictionary;
return CELIX_SUCCESS;
}
void serviceRegistration_invalidate(service_registration_pt registration) {
celixThreadRwlock_writeLock(®istration->lock);
registration->svcObj = NULL;
celixThreadRwlock_unlock(®istration->lock);
}
bool serviceRegistration_isValid(service_registration_pt registration) {
bool isValid;
if (registration != NULL) {
celixThreadRwlock_readLock(®istration->lock);
isValid = registration->svcObj != NULL;
celixThreadRwlock_unlock(®istration->lock);
} else {
isValid = false;
}
return isValid;
}
celix_status_t serviceRegistration_unregister(service_registration_pt registration) {
celix_status_t status = CELIX_SUCCESS;
bool notValidOrUnregistering;
celixThreadRwlock_readLock(®istration->lock);
notValidOrUnregistering = !serviceRegistration_isValid(registration) || registration->isUnregistering;
celixThreadRwlock_unlock(®istration->lock);
registry_callback_t callback;
callback.unregister = NULL;
bundle_pt bundle = NULL;
if (notValidOrUnregistering) {
status = CELIX_ILLEGAL_STATE;
} else {
celixThreadRwlock_writeLock(®istration->lock);
registration->isUnregistering = true;
bundle = registration->bundle;
callback = registration->callback;
celixThreadRwlock_unlock(®istration->lock);
}
if (status == CELIX_SUCCESS && callback.unregister != NULL) {
callback.unregister(callback.handle, bundle, registration);
}
framework_logIfError(celix_frameworkLogger_globalLogger(), status, NULL, "Cannot unregister service registration");
return status;
}
celix_status_t serviceRegistration_getService(service_registration_pt registration, bundle_pt bundle, const void** service) {
celixThreadRwlock_readLock(®istration->lock);
if (registration->svcType == CELIX_DEPRECATED_FACTORY_SERVICE) {
service_factory_pt factory = registration->deprecatedFactory;
factory->getService(factory->handle, bundle, registration, (void **) service);
} else if (registration->svcType == CELIX_FACTORY_SERVICE) {
celix_service_factory_t *fac = registration->factory;
*service = fac->getService(fac->handle, bundle, registration->properties);
} else { //plain service
(*service) = registration->svcObj;
}
celixThreadRwlock_unlock(®istration->lock);
return CELIX_SUCCESS;
}
celix_status_t serviceRegistration_ungetService(service_registration_pt registration, bundle_pt bundle, const void** service) {
celixThreadRwlock_readLock(®istration->lock);
if (registration->svcType == CELIX_DEPRECATED_FACTORY_SERVICE) {
service_factory_pt factory = registration->deprecatedFactory;
factory->ungetService(factory->handle, bundle, registration, (void**) service);
} else if (registration->svcType == CELIX_FACTORY_SERVICE) {
celix_service_factory_t *fac = registration->factory;
fac->ungetService(fac->handle, bundle, registration->properties);
}
celixThreadRwlock_unlock(®istration->lock);
return CELIX_SUCCESS;
}
celix_status_t serviceRegistration_getProperties(service_registration_pt registration, properties_pt *properties) {
celix_status_t status = CELIX_SUCCESS;
if (registration != NULL) {
celixThreadRwlock_readLock(®istration->lock);
*properties = registration->properties;
celixThreadRwlock_unlock(®istration->lock);
} else {
status = CELIX_ILLEGAL_ARGUMENT;
}
framework_logIfError(celix_frameworkLogger_globalLogger(), status, NULL, "Cannot get registration properties");
return status;
}
celix_status_t serviceRegistration_setProperties(service_registration_pt registration, properties_pt properties) {
celix_status_t status;
celixThreadRwlock_writeLock(®istration->lock);
status = serviceRegistration_initializeProperties(registration, properties);
celixThreadRwlock_unlock(®istration->lock);
return status;
}
celix_status_t serviceRegistration_getBundle(service_registration_pt registration, bundle_pt *bundle) {
celix_status_t status = CELIX_SUCCESS;
if (registration == NULL) {
return CELIX_ILLEGAL_ARGUMENT;
}
if (registration != NULL && *bundle == NULL) {
celixThreadRwlock_readLock(®istration->lock);
*bundle = registration->bundle;
celixThreadRwlock_unlock(®istration->lock);
} else {
status = CELIX_ILLEGAL_ARGUMENT;
}
framework_logIfError(celix_frameworkLogger_globalLogger(), status, NULL, "Cannot get bundle");
return status;
}
celix_status_t serviceRegistration_getServiceName(service_registration_pt registration, const char **serviceName) {
celix_status_t status = CELIX_SUCCESS;
if (registration != NULL && serviceName != NULL) {
celixThreadRwlock_readLock(®istration->lock);
*serviceName = registration->className;
celixThreadRwlock_unlock(®istration->lock);
} else {
status = CELIX_ILLEGAL_ARGUMENT;
}
framework_logIfError(celix_frameworkLogger_globalLogger(), status, NULL, "Cannot get service name");
return status;
}
long serviceRegistration_getServiceId(service_registration_t *registration) {
long svcId = -1;
if (registration != NULL) {
celixThreadRwlock_readLock(®istration->lock);
svcId = registration->serviceId;
celixThreadRwlock_unlock(®istration->lock);
}
return svcId;
}
service_registration_t* celix_serviceRegistration_createServiceFactory(
registry_callback_t callback,
const celix_bundle_t *bnd,
const char *serviceName,
long svcId,
celix_service_factory_t* factory,
celix_properties_t *props) {
service_registration_pt registration = NULL;
serviceRegistration_createInternal(callback, (celix_bundle_t*)bnd, serviceName, svcId, factory, props, CELIX_FACTORY_SERVICE, ®istration);
return registration;
}
bool serviceRegistration_isFactoryService(service_registration_t *registration) {
bool isFactory = false;
if (registration != NULL) {
celixThreadRwlock_readLock(®istration->lock);
isFactory = registration->svcType == CELIX_FACTORY_SERVICE || registration->svcType == CELIX_DEPRECATED_FACTORY_SERVICE;
celixThreadRwlock_unlock(®istration->lock);
}
return isFactory;
}