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

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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
   9 package org.opendaylight.openflowplugin.impl.configuration;
  10
  11 import com.google.common.base.Verify;
  12 import com.google.common.collect.ImmutableMap;
  13 import java.io.IOException;
  14 import java.util.ArrayList;
  15 import java.util.Enumeration;
  16 import java.util.HashMap;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Objects;
  20 import java.util.Optional;
  21 import java.util.function.Function;
  22 import javax.annotation.Nonnull;
  23 import org.opendaylight.openflowplugin.api.OFConstants;
  24 import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationListener;
  25 import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationProperty;
  26 import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationService;
  27 import org.opendaylight.openflowplugin.api.openflow.configuration.ConfigurationServiceFactory;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflow.provider.config.rev160510.OpenflowProviderConfig;
  29 import org.osgi.framework.BundleContext;
  30 import org.osgi.service.cm.Configuration;
  31 import org.osgi.service.cm.ConfigurationAdmin;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public class ConfigurationServiceFactoryImpl implements ConfigurationServiceFactory {
  36     private static final Logger LOG = LoggerFactory.getLogger(ConfigurationServiceFactory.class);
  37
  38     @Override
  39     public ConfigurationService newInstance(
  40             final OpenflowProviderConfig providerConfig,
  41             final BundleContext bundleContext) {
  42         return new ConfigurationServiceImpl(providerConfig, bundleContext);
  43     }
  44
  45     private static final class ConfigurationServiceImpl implements ConfigurationService {
  46         private final Map<String, String> propertyMap = new HashMap<>();
  47         private final List<ConfigurationListener> listeners = new ArrayList<>();
  48
  49         ConfigurationServiceImpl(final OpenflowProviderConfig providerConfig, final BundleContext bundleContext) {
  50             LOG.info("Loading properties from '{}' YANG file", OpenflowProviderConfig.QNAME);
  51             update(ImmutableMap
  52                     .<String, String>builder()
  53                     .put(ConfigurationProperty.RPC_REQUESTS_QUOTA.toString(),
  54                             providerConfig.getRpcRequestsQuota().getValue().toString())
  55                     .put(ConfigurationProperty.GLOBAL_NOTIFICATION_QUOTA.toString(),
  56                             providerConfig.getGlobalNotificationQuota().toString())
  57                     .put(ConfigurationProperty.SWITCH_FEATURES_MANDATORY.toString(),
  58                             providerConfig.isSwitchFeaturesMandatory().toString())
  59                     .put(ConfigurationProperty.ENABLE_FLOW_REMOVED_NOTIFICATION.toString(),
  60                             providerConfig.isEnableFlowRemovedNotification().toString())
  61                     .put(ConfigurationProperty.IS_STATISTICS_RPC_ENABLED.toString(),
  62                             providerConfig.isIsStatisticsRpcEnabled().toString())
  63                     .put(ConfigurationProperty.BARRIER_COUNT_LIMIT.toString(),
  64                             providerConfig.getBarrierCountLimit().getValue().toString())
  65                     .put(ConfigurationProperty.BARRIER_INTERVAL_TIMEOUT_LIMIT.toString(),
  66                             providerConfig.getBarrierIntervalTimeoutLimit().getValue().toString())
  67                     .put(ConfigurationProperty.ECHO_REPLY_TIMEOUT.toString(),
  68                             providerConfig.getEchoReplyTimeout().getValue().toString())
  69                     .put(ConfigurationProperty.IS_STATISTICS_POLLING_ON.toString(),
  70                             providerConfig.isIsStatisticsPollingOn().toString())
  71                     .put(ConfigurationProperty.SKIP_TABLE_FEATURES.toString(),
  72                             providerConfig.isSkipTableFeatures().toString())
  73                     .put(ConfigurationProperty.BASIC_TIMER_DELAY.toString(),
  74                             providerConfig.getBasicTimerDelay().getValue().toString())
  75                     .put(ConfigurationProperty.MAXIMUM_TIMER_DELAY.toString(),
  76                             providerConfig.getMaximumTimerDelay().getValue().toString())
  77                     .put(ConfigurationProperty.USE_SINGLE_LAYER_SERIALIZATION.toString(),
  78                             providerConfig.isUseSingleLayerSerialization().toString())
  79                     .put(ConfigurationProperty.THREAD_POOL_MIN_THREADS.toString(),
  80                             providerConfig.getThreadPoolMinThreads().toString())
  81                     .put(ConfigurationProperty.THREAD_POOL_MAX_THREADS.toString(),
  82                             providerConfig.getThreadPoolMaxThreads().getValue().toString())
  83                     .put(ConfigurationProperty.THREAD_POOL_TIMEOUT.toString(),
  84                             providerConfig.getThreadPoolTimeout().toString())
  85                     .build());
  86
  87             LOG.info("Loading configuration from '{}' configuration file", OFConstants.CONFIG_FILE_ID);
  88             Optional.ofNullable(bundleContext.getServiceReference(ConfigurationAdmin.class))
  89                     .ifPresent(serviceReference -> {
  90                         final ConfigurationAdmin configurationAdmin = bundleContext.getService(serviceReference);
  91
  92                         try {
  93                             final Configuration configuration
  94                                     = configurationAdmin.getConfiguration(OFConstants.CONFIG_FILE_ID);
  95
  96                             Optional.ofNullable(configuration.getProperties()).ifPresent(properties -> {
  97                                 final Enumeration<String> keys = properties.keys();
  98                                 final Map<String, String> mapProperties = new HashMap<>(properties.size());
  99
 100                                 while (keys.hasMoreElements()) {
 101                                     final String key = keys.nextElement();
 102                                     final String value = properties.get(key).toString();
 103                                     mapProperties.put(key, value);
 104                                 }
 105
 106                                 update(mapProperties);
 107                             });
 108                         } catch (IOException e) {
 109                             LOG.debug("Failed to load {} configuration file. Error {}", OFConstants.CONFIG_FILE_ID, e);
 110                         }
 111                     });
 112         }
 113
 114         @Override
 115         public void update(@Nonnull final Map<String, String> properties) {
 116             properties.forEach((propertyName, newValue) -> {
 117                 final String originalValue = propertyMap.get(propertyName);
 118
 119                 if (Objects.nonNull(originalValue)) {
 120                     if (originalValue.equals(newValue)) {
 121                         return;
 122                     }
 123
 124                     LOG.info("{} configuration property was changed from '{}' to '{}'",
 125                             propertyName,
 126                             originalValue,
 127                             newValue);
 128                 } else {
 129                     if (Objects.isNull(newValue)) {
 130                         return;
 131                     }
 132
 133                     LOG.info("{} configuration property was changed to '{}'", propertyName, newValue);
 134                 }
 135
 136                 propertyMap.put(propertyName, newValue);
 137                 listeners.forEach(listener -> listener.onPropertyChanged(propertyName, newValue));
 138             });
 139         }
 140
 141         @Nonnull
 142         @Override
 143         public <T> T getProperty(@Nonnull final String key, @Nonnull final Function<String, T> transformer) {
 144             return transformer.apply(propertyMap.get(key));
 145         }
 146
 147         @Nonnull
 148         @Override
 149         public AutoCloseable registerListener(@Nonnull final ConfigurationListener listener) {
 150             Verify.verify(!listeners.contains(listener));
 151             LOG.info("{} was registered as configuration listener to OpenFlowPlugin configuration service", listener);
 152             listeners.add(listener);
 153             propertyMap.forEach(listener::onPropertyChanged);
 154             return () -> listeners.remove(listener);
 155         }
 156
 157         @Override
 158         public void close() throws Exception {
 159             propertyMap.clear();
 160             listeners.clear();
 161         }
 162     }
 163 }