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