2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2018 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 * ============LICENSE_END=========================================================
24 package org.onap.appc.adapter.chef;
26 import com.att.eelf.configuration.EELFLogger;
27 import com.att.eelf.configuration.EELFManager;
28 import org.onap.appc.Constants;
29 import org.onap.appc.adapter.chef.impl.ChefAdapterFactory;
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;
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 ChefActivator implements BundleActivator {
57 private static final EELFLogger logger = EELFManager.getInstance().getLogger(ChefActivator.class);
58 private static final String NAME = "APPC Chef Adapter";
59 private static final String ADAPTER_NAME = "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 configuration object used to configure this bundle
74 private Configuration configuration = ConfigurationFactory.getConfiguration();
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 " + NAME);
96 String appName = readApplicationNameFromProperties();
97 logger.info(Msg.COMPONENT_INITIALIZING, appName, ADAPTER_NAME);
98 adapter = new ChefAdapterFactory().create();
99 if (registration == null) {
100 logger.info(Msg.REGISTERING_SERVICE, appName, ADAPTER_NAME,
101 ChefAdapter.class.getSimpleName());
102 registration = context.registerService(ChefAdapter.class, adapter, null);
105 logger.info(Msg.COMPONENT_INITIALIZED, appName, ADAPTER_NAME);
109 * Called when this bundle is stopped so the Framework can perform the bundle-specific activities necessary to stop
110 * the bundle. In general, this method should undo the work that the BundleActivator.start method started. There
111 * should be no active threads that were started by this bundle when this bundle returns. A stopped bundle must not
112 * call any Framework objects.
114 * This method must complete and return to its caller in a timely manner.
118 * The execution context of the bundle being stopped.
119 * @throws java.lang.Exception
120 * If this method throws an exception, the bundle is still marked as stopped, and the Framework will
121 * remove the bundle's listeners, unregister all services registered by the bundle, and release all
122 * services used by the bundle. *
123 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
126 public void stop(BundleContext context) throws Exception {
127 logger.info("Stopping bundle " + NAME);
129 if (registration != null) {
130 String appName = readApplicationNameFromProperties();
131 logger.info(Msg.COMPONENT_TERMINATING, appName, ADAPTER_NAME);
132 logger.info(Msg.UNREGISTERING_SERVICE, appName, ADAPTER_NAME);
133 registration.unregister();
135 logger.info(Msg.COMPONENT_TERMINATED, appName, ADAPTER_NAME);
139 private String readApplicationNameFromProperties() {
140 return configuration.getProperty(Constants.PROPERTY_APPLICATION_NAME);