netconf/netconf-impl/src/main/java/org/opendaylight/netconf/impl/NetconfServerSession.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.netconf.impl;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.net.InetAddresses;
  13 import io.netty.channel.Channel;
  14 import io.netty.channel.ChannelFuture;
  15 import io.netty.handler.codec.ByteToMessageDecoder;
  16 import io.netty.handler.codec.MessageToByteEncoder;
  17 import java.net.Inet4Address;
  18 import java.net.InetAddress;
  19 import java.time.Instant;
  20 import java.time.ZoneId;
  21 import java.time.ZonedDateTime;
  22 import java.time.format.DateTimeFormatter;
  23 import java.util.regex.Matcher;
  24 import java.util.regex.Pattern;
  25 import org.opendaylight.netconf.api.NetconfMessage;
  26 import org.opendaylight.netconf.api.messages.NetconfHelloMessageAdditionalHeader;
  27 import org.opendaylight.netconf.api.monitoring.NetconfManagementSession;
  28 import org.opendaylight.netconf.nettyutil.AbstractNetconfSession;
  29 import org.opendaylight.netconf.nettyutil.handler.NetconfMessageToXMLEncoder;
  30 import org.opendaylight.netconf.nettyutil.handler.NetconfXMLToMessageDecoder;
  31 import org.opendaylight.netconf.notifications.NetconfNotification;
  32 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Host;
  33 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv6Address;
  36 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.extension.rev131210.NetconfTcp;
  37 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.extension.rev131210.Session1;
  38 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.extension.rev131210.Session1Builder;
  39 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.NetconfSsh;
  40 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.Transport;
  41 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.sessions.Session;
  42 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.sessions.SessionBuilder;
  43 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.sessions.SessionKey;
  44 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
  45 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.ZeroBasedCounter32;
  46 import org.opendaylight.yangtools.yang.common.Uint32;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 public final class NetconfServerSession extends AbstractNetconfSession<NetconfServerSession,
  51         NetconfServerSessionListener> implements NetconfManagementSession {
  52
  53     private static final Logger LOG = LoggerFactory.getLogger(NetconfServerSession.class);
  54     private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ISO_OFFSET_DATE_TIME;
  55     private static final String DATE_TIME_PATTERN_STRING = DateAndTime.PATTERN_CONSTANTS.get(0);
  56     private static final Pattern DATE_TIME_PATTERN = Pattern.compile(DATE_TIME_PATTERN_STRING);
  57
  58     private final NetconfHelloMessageAdditionalHeader header;
  59     private final NetconfServerSessionListener sessionListener;
  60
  61     private ZonedDateTime loginTime;
  62     private long inRpcSuccess;
  63     private long inRpcFail;
  64     private long outRpcError;
  65     private long outNotification;
  66     private volatile boolean delayedClose;
  67
  68     public NetconfServerSession(final NetconfServerSessionListener sessionListener, final Channel channel,
  69                                 final long sessionId, final NetconfHelloMessageAdditionalHeader header) {
  70         super(sessionListener, channel, sessionId);
  71         this.header = header;
  72         this.sessionListener = sessionListener;
  73         LOG.debug("Session {} created", toString());
  74     }
  75
  76     @Override
  77     protected void sessionUp() {
  78         Preconditions.checkState(loginTime == null, "Session is already up");
  79         this.loginTime = Instant.now().atZone(ZoneId.systemDefault());
  80         super.sessionUp();
  81     }
  82
  83     /**
  84      * Close this session after next message is sent.
  85      * Suitable for close rpc that needs to send ok response before the session is closed.
  86      */
  87     public void delayedClose() {
  88         this.delayedClose = true;
  89     }
  90
  91     @Override
  92     public ChannelFuture sendMessage(final NetconfMessage netconfMessage) {
  93         final ChannelFuture channelFuture = super.sendMessage(netconfMessage);
  94         if (netconfMessage instanceof NetconfNotification) {
  95             outNotification++;
  96             sessionListener.onNotification(this, (NetconfNotification) netconfMessage);
  97         }
  98         // delayed close was set, close after the message was sent
  99         if (delayedClose) {
 100             channelFuture.addListener(future -> close());
 101         }
 102         return channelFuture;
 103     }
 104
 105     public void onIncommingRpcSuccess() {
 106         inRpcSuccess++;
 107     }
 108
 109     public void onIncommingRpcFail() {
 110         inRpcFail++;
 111     }
 112
 113     public void onOutgoingRpcError() {
 114         outRpcError++;
 115     }
 116
 117     @Override
 118     public Session toManagementSession() {
 119         SessionBuilder builder = new SessionBuilder();
 120
 121         builder.setSessionId(getSessionId());
 122         IpAddress address;
 123         InetAddress address1 = InetAddresses.forString(header.getAddress());
 124         if (address1 instanceof Inet4Address) {
 125             address = new IpAddress(new Ipv4Address(header.getAddress()));
 126         } else {
 127             address = new IpAddress(new Ipv6Address(header.getAddress()));
 128         }
 129         builder.setSourceHost(new Host(address));
 130
 131         Preconditions.checkState(DateAndTime.PATTERN_CONSTANTS.size() == 1);
 132         String formattedDateTime = DATE_FORMATTER.format(loginTime);
 133
 134         Matcher matcher = DATE_TIME_PATTERN.matcher(formattedDateTime);
 135         Preconditions.checkState(matcher.matches(), "Formatted datetime %s does not match pattern %s",
 136                 formattedDateTime, DATE_TIME_PATTERN);
 137         builder.setLoginTime(new DateAndTime(formattedDateTime));
 138
 139         builder.setInBadRpcs(new ZeroBasedCounter32(inRpcFail));
 140         builder.setInRpcs(new ZeroBasedCounter32(inRpcSuccess));
 141         builder.setOutRpcErrors(new ZeroBasedCounter32(outRpcError));
 142
 143         builder.setUsername(header.getUserName());
 144         builder.setTransport(getTransportForString(header.getTransport()));
 145
 146         builder.setOutNotifications(new ZeroBasedCounter32(outNotification));
 147
 148         builder.withKey(new SessionKey(Uint32.valueOf(getSessionId())));
 149
 150         Session1Builder builder1 = new Session1Builder();
 151         builder1.setSessionIdentifier(header.getSessionIdentifier());
 152         builder.addAugmentation(Session1.class, builder1.build());
 153
 154         return builder.build();
 155     }
 156
 157     private static Class<? extends Transport> getTransportForString(final String transport) {
 158         switch (transport) {
 159             case "ssh":
 160                 return NetconfSsh.class;
 161             case "tcp":
 162                 return NetconfTcp.class;
 163             default:
 164                 throw new IllegalArgumentException("Unknown transport type " + transport);
 165         }
 166     }
 167
 168     @Override
 169     protected NetconfServerSession thisInstance() {
 170         return this;
 171     }
 172
 173     @Override
 174     protected void addExiHandlers(final ByteToMessageDecoder decoder,
 175                                   final MessageToByteEncoder<NetconfMessage> encoder) {
 176         replaceMessageDecoder(decoder);
 177         replaceMessageEncoderAfterNextMessage(encoder);
 178     }
 179
 180     @Override
 181     public void stopExiCommunication() {
 182         replaceMessageDecoder(new NetconfXMLToMessageDecoder());
 183         replaceMessageEncoderAfterNextMessage(new NetconfMessageToXMLEncoder());
 184     }
 185 }