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.iaas;
24 import org.openecomp.appc.Constants;
25 import org.openecomp.appc.adapter.iaas.impl.ProviderAdapterImpl;
26 import org.openecomp.appc.configuration.Configuration;
27 import org.openecomp.appc.configuration.ConfigurationFactory;
28 import org.openecomp.appc.i18n.Msg;
29 import com.att.eelf.configuration.EELFLogger;
30 import com.att.eelf.configuration.EELFManager;
31 import org.osgi.framework.BundleActivator;
32 import org.osgi.framework.BundleContext;
33 import org.osgi.framework.ServiceRegistration;
36 * This activator is used to initialize and terminate the connection pool to one or more providers.
38 * The CDP abstraction layer supports multiple types of providers, with each provider supporting multiple tenants. The
39 * "connection" to a specific tenant on a specific provider is represented by a "context" object. These context objects
40 * are authenticated to a specific tenant on the provider, but can be reused from one request to another. Contexts are
41 * slow to set up and are resource intensive, so they are cached. However, the contexts for a specific tenant on a
42 * specific provider must be cached separately.
45 * Activation of the bundle creates an empty cache which is organized first by provider type, then by tenant name, with
46 * the contents being an empty pool of contexts for that provider/tenant combination. The pool is created on first use,
47 * and retained for as long as the bundle is active.
50 * When the bundle is deactivated, the cache is torn down with all contexts being closed.
53 public class AppcProviderAdapterActivator implements BundleActivator {
56 * The bundle registration
58 private ServiceRegistration registration = null;
61 * The reference to the actual implementation object that implements the services
63 private ProviderAdapter adapter;
66 * The logger to be used
68 private static final EELFLogger logger = EELFManager.getInstance().getLogger(AppcProviderAdapterActivator.class);
71 * The configuration object used to configure this bundle
73 private Configuration configuration;
76 * Called when this bundle is started so the Framework can perform the bundle-specific activities necessary to start
77 * this bundle. This method can be used to register services or to allocate any resources that this bundle needs.
79 * This method must complete and return to its caller in a timely manner.
83 * The execution context of the bundle being started.
84 * @throws java.lang.Exception
85 * If this method throws an exception, this bundle is marked as stopped and the Framework will remove
86 * this bundle's listeners, unregister all services registered by this bundle, and release all services
87 * used by this bundle.
88 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
91 public void start(BundleContext context) throws Exception {
92 logger.info("Starting bundle " + getName());
94 configuration = ConfigurationFactory.getConfiguration();
95 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
96 logger.info(Msg.COMPONENT_INITIALIZING, appName, "IAAS adapter");
97 adapter = new ProviderAdapterImpl(configuration.getProperties());
98 if (registration == null) {
99 logger.info(Msg.REGISTERING_SERVICE, appName, adapter.getAdapterName(),
100 ProviderAdapter.class.getSimpleName());
101 registration = context.registerService(ProviderAdapter.class, adapter, null);
104 logger.info(Msg.COMPONENT_INITIALIZED, appName, "IAAS adapter");
108 * Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
109 * the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
110 * should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
111 * call any Framework objects.
113 * This method must complete and return to its caller in a timely manner.
117 * The execution context of the bundle being stopped.
118 * @throws java.lang.Exception
119 * If this method throws an exception, the bundle is still marked as stopped, and the Framework will
120 * remove the bundle's listeners, unregister all services registered by the bundle, and release all
121 * services used by the bundle. *
122 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
125 public void stop(BundleContext context) throws Exception {
126 logger.info("Stopping bundle " + getName());
128 if (registration != null) {
129 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
130 logger.info(Msg.COMPONENT_TERMINATING, appName, "IAAS adapter");
131 logger.info(Msg.UNREGISTERING_SERVICE, appName, adapter.getAdapterName());
132 registration.unregister();
134 logger.info(Msg.COMPONENT_TERMINATED, appName, "IAAS adapter");
138 public String getName() {
139 return "APPC IaaS adapter";