opendaylight/netconf/netconf-impl/src/main/java/org/opendaylight/controller/netconf/impl/NetconfServerSessionNegotiatorFactory.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, 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
   9 package org.opendaylight.controller.netconf.impl;
  10
  11 import static org.opendaylight.controller.netconf.mapping.api.NetconfOperationProvider.NetconfOperationProviderUtil.getNetconfSessionIdForReporting;
  12
  13 import com.google.common.collect.ImmutableSet;
  14 import java.util.Set;
  15
  16 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
  17 import org.opendaylight.controller.netconf.api.NetconfServerSessionPreferences;
  18 import org.opendaylight.controller.netconf.impl.mapping.CapabilityProvider;
  19 import org.opendaylight.controller.netconf.impl.osgi.SessionMonitoringService;
  20 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationProvider;
  21 import org.opendaylight.controller.netconf.mapping.api.NetconfOperationServiceSnapshot;
  22 import org.opendaylight.controller.netconf.util.messages.NetconfHelloMessage;
  23 import org.opendaylight.controller.netconf.util.xml.XmlNetconfConstants;
  24 import org.opendaylight.protocol.framework.SessionListenerFactory;
  25 import org.opendaylight.protocol.framework.SessionNegotiator;
  26 import org.opendaylight.protocol.framework.SessionNegotiatorFactory;
  27
  28 import com.google.common.collect.Sets;
  29
  30 import io.netty.channel.Channel;
  31 import io.netty.util.Timer;
  32 import io.netty.util.concurrent.Promise;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 public class NetconfServerSessionNegotiatorFactory implements SessionNegotiatorFactory<NetconfHelloMessage, NetconfServerSession, NetconfServerSessionListener> {
  37
  38     // TODO make this configurable
  39     private static final Set<String> DEFAULT_BASE_CAPABILITIES = ImmutableSet.of(
  40             XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_0,
  41             XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_1,
  42             XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_CAPABILITY_EXI_1_0
  43     );
  44
  45     private final Timer timer;
  46
  47     private final SessionIdProvider idProvider;
  48     private final NetconfOperationProvider netconfOperationProvider;
  49     private final long connectionTimeoutMillis;
  50     private final DefaultCommitNotificationProducer commitNotificationProducer;
  51     private final SessionMonitoringService monitoringService;
  52     private static final Logger logger = LoggerFactory.getLogger(NetconfServerSessionNegotiatorFactory.class);
  53
  54     // TODO too many params, refactor
  55     public NetconfServerSessionNegotiatorFactory(Timer timer, NetconfOperationProvider netconfOperationProvider,
  56                                                  SessionIdProvider idProvider, long connectionTimeoutMillis,
  57                                                  DefaultCommitNotificationProducer commitNot,
  58                                                  SessionMonitoringService monitoringService) {
  59         this.timer = timer;
  60         this.netconfOperationProvider = netconfOperationProvider;
  61         this.idProvider = idProvider;
  62         this.connectionTimeoutMillis = connectionTimeoutMillis;
  63         this.commitNotificationProducer = commitNot;
  64         this.monitoringService = monitoringService;
  65     }
  66
  67     /**
  68      *
  69      * @param defunctSessionListenerFactory will not be taken into account as session listener factory can
  70      *                                      only be created after snapshot is opened, thus this method constructs
  71      *                                      proper session listener factory.
  72      * @param channel Underlying channel
  73      * @param promise Promise to be notified
  74      * @return session negotiator
  75      */
  76     @Override
  77     public SessionNegotiator<NetconfServerSession> getSessionNegotiator(SessionListenerFactory<NetconfServerSessionListener> defunctSessionListenerFactory,
  78                                                                         Channel channel, Promise<NetconfServerSession> promise) {
  79         long sessionId = idProvider.getNextSessionId();
  80         NetconfOperationServiceSnapshot netconfOperationServiceSnapshot = netconfOperationProvider.openSnapshot(
  81                 getNetconfSessionIdForReporting(sessionId));
  82         CapabilityProvider capabilityProvider = new CapabilityProviderImpl(netconfOperationServiceSnapshot);
  83
  84         NetconfServerSessionPreferences proposal = null;
  85         try {
  86             proposal = new NetconfServerSessionPreferences(
  87                     createHelloMessage(sessionId, capabilityProvider), sessionId);
  88         } catch (NetconfDocumentedException e) {
  89             logger.error("Unable to create hello mesage for session {} with capability provider {}", sessionId,capabilityProvider);
  90             throw new IllegalStateException(e);
  91         }
  92
  93         NetconfServerSessionListenerFactory sessionListenerFactory = new NetconfServerSessionListenerFactory(
  94                 commitNotificationProducer, monitoringService,
  95                 netconfOperationServiceSnapshot, capabilityProvider);
  96
  97         return new NetconfServerSessionNegotiator(proposal, promise, channel, timer,
  98                 sessionListenerFactory.getSessionListener(), connectionTimeoutMillis);
  99     }
 100
 101     private NetconfHelloMessage createHelloMessage(long sessionId, CapabilityProvider capabilityProvider) throws NetconfDocumentedException {
 102         return NetconfHelloMessage.createServerHello(Sets.union(capabilityProvider.getCapabilities(), DEFAULT_BASE_CAPABILITIES), sessionId);
 103     }
 104
 105 }