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/*-
* ============LICENSE_START=======================================================
* openECOMP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.adapter.iaas;
import org.openecomp.appc.Constants;
import org.openecomp.appc.adapter.iaas.impl.ProviderAdapterImpl;
import org.openecomp.appc.configuration.Configuration;
import org.openecomp.appc.configuration.ConfigurationFactory;
import org.openecomp.appc.i18n.Msg;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
/**
* This activator is used to initialize and terminate the connection pool to one or more providers.
* <p>
* The CDP abstraction layer supports multiple types of providers, with each provider supporting multiple tenants. The
* "connection" to a specific tenant on a specific provider is represented by a "context" object. These context objects
* are authenticated to a specific tenant on the provider, but can be reused from one request to another. Contexts are
* slow to set up and are resource intensive, so they are cached. However, the contexts for a specific tenant on a
* specific provider must be cached separately.
* </p>
* <p>
* Activation of the bundle creates an empty cache which is organized first by provider type, then by tenant name, with
* the contents being an empty pool of contexts for that provider/tenant combination. The pool is created on first use,
* and retained for as long as the bundle is active.
* </p>
* <p>
* When the bundle is deactivated, the cache is torn down with all contexts being closed.
* </p>
*/
public class AppcProviderAdapterActivator implements BundleActivator {
/**
* The bundle registration
*/
private ServiceRegistration registration = null;
/**
* The reference to the actual implementation object that implements the services
*/
private ProviderAdapter adapter;
/**
* The logger to be used
*/
// private static final Logger LOG = LoggerFactory.getLogger(AppcProviderAdapterActivator.class);
private static final EELFLogger logger = EELFManager.getInstance().getLogger(AppcProviderAdapterActivator.class);
/**
* The configuration object used to configure this bundle
*/
private Configuration configuration;
/**
* Called when this bundle is started so the Framework can perform the bundle-specific activities necessary to start
* this bundle. This method can be used to register services or to allocate any resources that this bundle needs.
* <p>
* This method must complete and return to its caller in a timely manner.
* </p>
*
* @param context
* The execution context of the bundle being started.
* @throws java.lang.Exception
* If this method throws an exception, this bundle is marked as stopped and the Framework will remove
* this bundle's listeners, unregister all services registered by this bundle, and release all services
* used by this bundle.
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
*/
@Override
public void start(BundleContext context) throws Exception {
logger.info("Starting bundle " + getName());
configuration = ConfigurationFactory.getConfiguration();
String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
logger.info(Msg.COMPONENT_INITIALIZING, appName, "IAAS adapter");
adapter = new ProviderAdapterImpl(configuration.getProperties());
if (registration == null) {
logger.info(Msg.REGISTERING_SERVICE, appName, adapter.getAdapterName(),
ProviderAdapter.class.getSimpleName());
registration = context.registerService(ProviderAdapter.class, adapter, null);
}
logger.info(Msg.COMPONENT_INITIALIZED, appName, "IAAS adapter");
}
/**
* Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
* the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
* should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
* call any Framework objects.
* <p>
* This method must complete and return to its caller in a timely manner.
* </p>
*
* @param context
* The execution context of the bundle being stopped.
* @throws java.lang.Exception
* If this method throws an exception, the bundle is still marked as stopped, and the Framework will
* remove the bundle's listeners, unregister all services registered by the bundle, and release all
* services used by the bundle. *
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
*/
@Override
public void stop(BundleContext context) throws Exception {
logger.info("Stopping bundle " + getName());
if (registration != null) {
String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
logger.info(Msg.COMPONENT_TERMINATING, appName, "IAAS adapter");
logger.info(Msg.UNREGISTERING_SERVICE, appName, adapter.getAdapterName());
registration.unregister();
registration = null;
logger.info(Msg.COMPONENT_TERMINATED, appName, "IAAS adapter");
}
}
public String getName() {
return "APPC IaaS adapter";
}
}
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