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.chef;
27 import org.onap.appc.Constants;
28 import org.onap.appc.adapter.chef.impl.ChefAdapterImpl;
29 import org.onap.appc.configuration.Configuration;
30 import org.onap.appc.configuration.ConfigurationFactory;
31 import org.onap.appc.i18n.Msg;
32 import com.att.eelf.configuration.EELFLogger;
33 import com.att.eelf.configuration.EELFManager;
34 import org.osgi.framework.BundleActivator;
35 import org.osgi.framework.BundleContext;
36 import org.osgi.framework.ServiceRegistration;
39 * This activator is used to initialize and terminate the connection pool to one or more providers.
41 * The CDP abstraction layer supports multiple types of providers, with each provider supporting multiple tenants. The
42 * "connection" to a specific tenant on a specific provider is represented by a "context" object. These context objects
43 * are authenticated to a specific tenant on the provider, but can be reused from one request to another. Contexts are
44 * slow to set up and are resource intensive, so they are cached. However, the contexts for a specific tenant on a
45 * specific provider must be cached separately.
48 * Activation of the bundle creates an empty cache which is organized first by provider type, then by tenant name, with
49 * the contents being an empty pool of contexts for that provider/tenant combination. The pool is created on first use,
50 * and retained for as long as the bundle is active.
53 * When the bundle is deactivated, the cache is torn down with all contexts being closed.
56 public class ChefActivator implements BundleActivator {
58 private static final String NAME = "APPC Chef Adapter";
59 private static final String CHEF_ADAPTER_STR = "CHEF adapter";
62 * The bundle registration
64 private ServiceRegistration registration = null;
67 * The reference to the actual implementation object that implements the services
69 private ChefAdapter adapter;
72 * The logger to be used
74 private final EELFLogger logger = EELFManager.getInstance().getLogger(ChefActivator.class);
77 * The configuration object used to configure this bundle
79 private Configuration configuration;
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.
89 * The execution context of the bundle being started.
90 * @throws java.lang.Exception
91 * If this method throws an exception, this bundle is marked as stopped and the Framework will remove
92 * this bundle's listeners, unregister all services registered by this bundle, and release all services
93 * used by this bundle.
94 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
97 public void start(BundleContext context) throws Exception {
98 logger.info("Starting bundle " + NAME);
100 configuration = ConfigurationFactory.getConfiguration();
101 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
102 logger.info(Msg.COMPONENT_INITIALIZING, appName, "chef adapter");
103 adapter = new ChefAdapterImpl(configuration.getProperties());
104 if (registration == null) {
105 logger.info(Msg.REGISTERING_SERVICE, appName, adapter.getAdapterName(),
106 ChefAdapter.class.getSimpleName());
107 registration = context.registerService(ChefAdapter.class, adapter, null);
110 logger.info(Msg.COMPONENT_INITIALIZED, appName, CHEF_ADAPTER_STR);
114 * Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
115 * the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
116 * should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
117 * call any Framework objects.
119 * This method must complete and return to its caller in a timely manner.
123 * The execution context of the bundle being stopped.
124 * @throws java.lang.Exception
125 * If this method throws an exception, the bundle is still marked as stopped, and the Framework will
126 * remove the bundle's listeners, unregister all services registered by the bundle, and release all
127 * services used by the bundle. *
128 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
131 public void stop(BundleContext context) throws Exception {
132 logger.info("Stopping bundle " + NAME);
134 if (registration != null) {
135 String appName = configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);
136 logger.info(Msg.COMPONENT_TERMINATING, appName, CHEF_ADAPTER_STR);
137 logger.info(Msg.UNREGISTERING_SERVICE, appName, adapter.getAdapterName());
138 registration.unregister();
140 logger.info(Msg.COMPONENT_TERMINATED, appName, CHEF_ADAPTER_STR);