openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/configuration/ConfigurationServiceFactoryOsgiImpl.java

   1 /*
   2  * Copyright (c) 2018 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.openflowplugin.impl.configuration;
   9
  10 import java.io.IOException;
  11 import java.util.Dictionary;
  12 import java.util.Enumeration;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import org.opendaylight.openflowplugin.api.OFConstants;
  16 import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationService;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflow.provider.config.rev160510.OpenflowProviderConfig;
  18 import org.osgi.framework.BundleContext;
  19 import org.osgi.framework.ServiceReference;
  20 import org.osgi.service.cm.Configuration;
  21 import org.osgi.service.cm.ConfigurationAdmin;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 // NOT @Singleton @Service - we do not want this OSGi specific implementation to be auto-discovered in a standalone env
  26 public class ConfigurationServiceFactoryOsgiImpl extends ConfigurationServiceFactoryImpl {
  27     private static final Logger LOG = LoggerFactory.getLogger(ConfigurationServiceFactoryOsgiImpl.class);
  28
  29     private final BundleContext bundleContext;
  30
  31     public ConfigurationServiceFactoryOsgiImpl(final BundleContext bundleContext) {
  32         this.bundleContext = bundleContext;
  33     }
  34
  35     @Override
  36     public ConfigurationService newInstance(final OpenflowProviderConfig providerConfig) {
  37         ConfigurationService cs = super.newInstance(providerConfig);
  38         update(cs);
  39         return cs;
  40     }
  41
  42     private void update(final ConfigurationService configurationService) {
  43         LOG.info("Loading configuration from '{}' configuration file", OFConstants.CONFIG_FILE_ID);
  44         final ServiceReference<ConfigurationAdmin> serviceReference =
  45             bundleContext.getServiceReference(ConfigurationAdmin.class);
  46         if (serviceReference == null) {
  47             return;
  48         }
  49         final ConfigurationAdmin configurationAdmin = bundleContext.getService(serviceReference);
  50         if (configurationAdmin == null) {
  51             return;
  52         }
  53
  54         try {
  55             final Configuration configuration;
  56             try {
  57                 configuration = configurationAdmin.getConfiguration(OFConstants.CONFIG_FILE_ID);
  58             } catch (IOException e) {
  59                 LOG.warn("Failed to load {} configuration file", OFConstants.CONFIG_FILE_ID, e);
  60                 return;
  61             }
  62
  63             final Dictionary<String, Object> properties = configuration.getProperties();
  64             if (properties != null) {
  65                 final Enumeration<String> keys = properties.keys();
  66                 final Map<String, String> mapProperties = new HashMap<>(properties.size());
  67
  68                 while (keys.hasMoreElements()) {
  69                     final String key = keys.nextElement();
  70                     final String value = properties.get(key).toString();
  71                     mapProperties.put(key, value);
  72                 }
  73
  74                 configurationService.update(mapProperties);
  75             }
  76         } finally {
  77             bundleContext.ungetService(serviceReference);
  78         }
  79     }
  80 }