2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Modifications Copyright (C) 2019 IBM
10 * =============================================================================
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
15 * http://www.apache.org/licenses/LICENSE-2.0
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
23 * ============LICENSE_END=========================================================
26 package org.onap.appc.adapter.iaas;
28 import org.onap.appc.Constants;
29 import org.onap.appc.adapter.iaas.impl.ProviderAdapterImpl;
30 import org.onap.appc.configuration.Configuration;
31 import org.onap.appc.configuration.ConfigurationFactory;
32 import org.onap.appc.i18n.Msg;
33 import org.osgi.framework.BundleActivator;
34 import org.osgi.framework.BundleContext;
35 import org.osgi.framework.ServiceRegistration;
36 import com.att.eelf.configuration.EELFLogger;
37 import com.att.eelf.configuration.EELFManager;
40 * This activator is used to initialize and terminate the connection pool to one or more providers.
42 * The CDP abstraction layer supports multiple types of providers, with each provider supporting multiple tenants. The
43 * "connection" to a specific tenant on a specific provider is represented by a "context" object. These context objects
44 * are authenticated to a specific tenant on the provider, but can be reused from one request to another. Contexts are
45 * slow to set up and are resource intensive, so they are cached. However, the contexts for a specific tenant on a
46 * specific provider must be cached separately.
49 * Activation of the bundle creates an empty cache which is organized first by provider type, then by tenant name, with
50 * the contents being an empty pool of contexts for that provider/tenant combination. The pool is created on first use,
51 * and retained for as long as the bundle is active.
54 * When the bundle is deactivated, the cache is torn down with all contexts being closed.
57 public class AppcProviderAdapterActivator implements BundleActivator {
60 * The bundle registration
62 private ServiceRegistration registration = null;
65 * The reference to the actual implementation object that implements the services
67 private ProviderAdapter adapter;
70 * The logger to be used
72 private static final EELFLogger logger = EELFManager.getInstance().getLogger(AppcProviderAdapterActivator.class);
75 * The configuration object used to configure this bundle
77 private Configuration configuration;
79 private static final String APPC_IAAS_ADAPTER = "APPC IaaS adapter";
80 private static final String IAAS_ADAPTER = "IAAS adapter";
82 * Called when this bundle is started so the Framework can perform the bundle-specific activities necessary to start
83 * this bundle. This method can be used to register services or to allocate any resources that this bundle needs.
85 * This method must complete and return to its caller in a timely manner.
88 * @param context The execution context of the bundle being started.
89 * @throws java.lang.Exception If this method throws an exception, this bundle is marked as stopped and the
90 * Framework will remove this bundle's listeners, unregister all services registered by this bundle, and
91 * release all services used by this bundle.
92 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
95 public void start(BundleContext context) throws Exception {
96 logger.info("Starting bundle " + getName());
98 configuration = ConfigurationFactory.getConfiguration();
99 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
100 logger.info(Msg.COMPONENT_INITIALIZING, appName, IAAS_ADAPTER);
102 adapter = new ProviderAdapterImpl(configuration.getProperties());
103 } catch (Exception e) {
104 logger.error("Error initializing APPC IAAS ProviderAdapterImpl", e);
108 if (registration == null) {
109 logger.info(Msg.REGISTERING_SERVICE, appName, adapter.getAdapterName(),
110 ProviderAdapter.class.getSimpleName());
111 registration = context.registerService(ProviderAdapter.class, adapter, null);
114 logger.info(Msg.COMPONENT_INITIALIZED, appName, IAAS_ADAPTER);
118 * Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
119 * the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
120 * should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
121 * call any Framework objects.
123 * This method must complete and return to its caller in a timely manner.
126 * @param context The execution context of the bundle being stopped.
127 * @throws java.lang.Exception If this method throws an exception, the bundle is still marked as stopped, and the
128 * Framework will remove the bundle's listeners, unregister all services registered by the bundle, and
129 * release all services used by the bundle. *
130 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
133 public void stop(BundleContext context) throws Exception {
134 logger.info("Stopping bundle " + getName());
136 if (registration != null) {
137 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
138 logger.info(Msg.COMPONENT_TERMINATING, appName, IAAS_ADAPTER);
139 logger.info(Msg.UNREGISTERING_SERVICE, appName, adapter.getAdapterName());
140 registration.unregister();
142 logger.info(Msg.COMPONENT_TERMINATED, appName, IAAS_ADAPTER);
146 public String getName() {
147 return APPC_IAAS_ADAPTER;