2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 * ============LICENSE_END=========================================================
25 package org.onap.appc.adapter.rest;
27 import org.onap.appc.Constants;
28 import org.onap.appc.adapter.rest.impl.RestAdapterImpl;
29 import org.onap.appc.configuration.Configuration;
30 import org.onap.appc.configuration.ConfigurationFactory;
31 import org.onap.appc.i18n.Msg;
32 import org.osgi.framework.BundleActivator;
33 import org.osgi.framework.BundleContext;
34 import org.osgi.framework.ServiceRegistration;
36 import com.att.eelf.configuration.EELFLogger;
37 import com.att.eelf.configuration.EELFManager;
41 * This activator is used to initialize and terminate the connection pool to one or more providers.
43 * The CDP abstraction layer supports multiple types of providers, with each provider supporting multiple tenants. The
44 * "connection" to a specific tenant on a specific provider is represented by a "context" object. These context objects
45 * are authenticated to a specific tenant on the provider, but can be reused from one request to another. Contexts are
46 * slow to set up and are resource intensive, so they are cached. However, the contexts for a specific tenant on a
47 * specific provider must be cached separately.
50 * Activation of the bundle creates an empty cache which is organized first by provider type, then by tenant name, with
51 * the contents being an empty pool of contexts for that provider/tenant combination. The pool is created on first use,
52 * and retained for as long as the bundle is active.
55 * When the bundle is deactivated, the cache is torn down with all contexts being closed.
58 public class RestActivator implements BundleActivator {
61 * The bundle registration
63 private ServiceRegistration registration = null;
66 * The reference to the actual implementation object that implements the services
68 private RestAdapter adapter;
71 * The logger to be used
73 private final EELFLogger logger = EELFManager.getInstance().getLogger(RestActivator.class);
76 * The configuration object used to configure this bundle
78 private Configuration configuration;
81 * Called when this bundle is started so the Framework can perform the bundle-specific activities necessary to start
82 * this bundle. This method can be used to register services or to allocate any resources that this bundle needs.
84 * This method must complete and return to its caller in a timely manner.
88 * The execution context of the bundle being started.
89 * @throws java.lang.Exception
90 * If this method throws an exception, this bundle is marked as stopped and the Framework will remove
91 * this bundle's listeners, unregister all services registered by this bundle, and release all services
92 * used by this bundle.
93 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
96 public void start(BundleContext context) throws Exception {
97 logger.info("Starting bundle " + getName());
99 configuration = ConfigurationFactory.getConfiguration();
100 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
101 logger.info(Msg.COMPONENT_INITIALIZING, appName, "rest adapter");
102 adapter = new RestAdapterImpl();
103 if (registration == null) {
104 registration = context.registerService(RestAdapter.class, adapter, null);
107 logger.info(Msg.COMPONENT_INITIALIZED, appName, "REST adapter");
111 * Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
112 * the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
113 * should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
114 * call any Framework objects.
116 * This method must complete and return to its caller in a timely manner.
120 * The execution context of the bundle being stopped.
121 * @throws java.lang.Exception
122 * If this method throws an exception, the bundle is still marked as stopped, and the Framework will
123 * remove the bundle's listeners, unregister all services registered by the bundle, and release all
124 * services used by the bundle. *
125 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
128 public void stop(BundleContext context) throws Exception {
129 logger.info("Stopping bundle " + getName());
131 if (registration != null) {
132 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
133 logger.info(Msg.COMPONENT_TERMINATING, appName, "REST adapter");
134 logger.info(Msg.UNREGISTERING_SERVICE, appName, adapter.getAdapterName());
135 registration.unregister();
137 logger.info(Msg.COMPONENT_TERMINATED, appName, "REST adapter");
141 public String getName() {
142 return "APPC IaaS adapter";