2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.netconf.server;
10 import com.google.common.base.Preconditions;
11 import com.google.common.collect.Collections2;
12 import com.google.common.collect.ImmutableSet;
13 import com.google.common.collect.Sets;
14 import io.netty.channel.Channel;
15 import io.netty.util.Timer;
16 import io.netty.util.concurrent.Promise;
17 import java.net.SocketAddress;
19 import org.checkerframework.checker.index.qual.NonNegative;
20 import org.opendaylight.netconf.api.CapabilityURN;
21 import org.opendaylight.netconf.api.messages.HelloMessage;
22 import org.opendaylight.netconf.nettyutil.AbstractNetconfSessionNegotiator;
23 import org.opendaylight.netconf.server.api.SessionIdProvider;
24 import org.opendaylight.netconf.server.api.monitoring.NetconfMonitoringService;
25 import org.opendaylight.netconf.server.api.operations.NetconfOperationService;
26 import org.opendaylight.netconf.server.api.operations.NetconfOperationServiceFactory;
27 import org.opendaylight.netconf.server.osgi.NetconfOperationRouterImpl;
28 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.SessionIdType;
29 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
30 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.Capabilities;
32 // FIXME: Non-final for testtool. Why exactly?
33 public class NetconfServerSessionNegotiatorFactory {
34 public static final Set<String> DEFAULT_BASE_CAPABILITIES = ImmutableSet.of(
36 CapabilityURN.BASE_1_1,
38 CapabilityURN.NOTIFICATION);
40 private final @NonNegative int maximumIncomingChunkSize;
41 private final Timer timer;
42 private final SessionIdProvider idProvider;
43 private final NetconfOperationServiceFactory aggregatedOpService;
44 private final long connectionTimeoutMillis;
45 private final NetconfMonitoringService monitoringService;
46 private final Set<String> baseCapabilities;
48 // FIXME: 5.0.0: protected
49 public NetconfServerSessionNegotiatorFactory(final Timer timer,
50 final NetconfOperationServiceFactory netconfOperationProvider, final SessionIdProvider idProvider,
51 final long connectionTimeoutMillis, final NetconfMonitoringService monitoringService) {
52 this(timer, netconfOperationProvider, idProvider, connectionTimeoutMillis, monitoringService, null);
55 // FIXME: 5.0.0: protected
56 public NetconfServerSessionNegotiatorFactory(final Timer timer,
57 final NetconfOperationServiceFactory netconfOperationProvider, final SessionIdProvider idProvider,
58 final long connectionTimeoutMillis, final NetconfMonitoringService monitoringService,
59 final Set<String> baseCapabilities) {
60 this(timer, netconfOperationProvider, idProvider, connectionTimeoutMillis, monitoringService, baseCapabilities,
61 AbstractNetconfSessionNegotiator.DEFAULT_MAXIMUM_INCOMING_CHUNK_SIZE);
64 protected NetconfServerSessionNegotiatorFactory(final Timer timer,
65 final NetconfOperationServiceFactory netconfOperationProvider, final SessionIdProvider idProvider,
66 final long connectionTimeoutMillis, final NetconfMonitoringService monitoringService,
67 final Set<String> baseCapabilities, final @NonNegative int maximumIncomingChunkSize) {
69 aggregatedOpService = netconfOperationProvider;
70 this.idProvider = idProvider;
71 this.connectionTimeoutMillis = connectionTimeoutMillis;
72 this.monitoringService = monitoringService;
73 this.maximumIncomingChunkSize = maximumIncomingChunkSize;
74 this.baseCapabilities = validateBaseCapabilities(baseCapabilities == null ? DEFAULT_BASE_CAPABILITIES :
78 private static ImmutableSet<String> validateBaseCapabilities(final Set<String> baseCapabilities) {
79 // Check base capabilities to be supported by the server
80 final var unknownBaseCaps = Sets.difference(baseCapabilities, DEFAULT_BASE_CAPABILITIES);
81 Preconditions.checkArgument(unknownBaseCaps.isEmpty(),
82 "Base capabilities that will be supported by netconf server have to be subset of %s, "
83 + "unknown base capabilities: %s",
84 DEFAULT_BASE_CAPABILITIES, unknownBaseCaps);
86 return ImmutableSet.<String>builder()
87 .addAll(baseCapabilities)
88 // Base 1.0 capability is supported by default
89 .add(CapabilityURN.BASE)
94 * Get session negotiator.
96 * @param channel Underlying channel
97 * @param promise Promise to be notified
98 * @return session negotiator
100 public NetconfServerSessionNegotiator getSessionNegotiator(final Channel channel,
101 final Promise<NetconfServerSession> promise) {
102 final var sessionId = idProvider.getNextSessionId();
103 final var socketAddress = channel.parent() == null ? null : channel.parent().localAddress();
104 final var service = getOperationServiceForAddress(sessionId, socketAddress);
105 final var listener = new NetconfServerSessionListener(
106 new NetconfOperationRouterImpl(service, monitoringService, sessionId), monitoringService, service);
108 return new NetconfServerSessionNegotiator(createHelloMessage(sessionId, monitoringService), sessionId, promise,
109 channel, timer, listener, connectionTimeoutMillis, maximumIncomingChunkSize);
112 protected NetconfOperationService getOperationServiceForAddress(final SessionIdType sessionId,
113 final SocketAddress socketAddress) {
114 return aggregatedOpService.createService(sessionId);
117 protected final NetconfOperationServiceFactory getOperationServiceFactory() {
118 return aggregatedOpService;
121 private HelloMessage createHelloMessage(final SessionIdType sessionId,
122 final NetconfMonitoringService capabilityProvider) {
123 return HelloMessage.createServerHello(Sets.union(
124 transformCapabilities(capabilityProvider.getCapabilities()), baseCapabilities),
128 public static Set<String> transformCapabilities(final Capabilities capabilities) {
129 return Sets.newHashSet(Collections2.transform(capabilities.getCapability(), Uri::getValue));