--- /dev/null
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+
+package org.opendaylight.netconf.impl;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Collections2;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Sets;
+import io.netty.channel.Channel;
+import io.netty.util.Timer;
+import io.netty.util.concurrent.Promise;
+import java.net.SocketAddress;
+import java.util.Set;
+import org.opendaylight.netconf.api.NetconfServerSessionPreferences;
+import org.opendaylight.netconf.api.messages.NetconfHelloMessage;
+import org.opendaylight.netconf.api.monitoring.NetconfMonitoringService;
+import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
+import org.opendaylight.netconf.impl.osgi.NetconfOperationRouter;
+import org.opendaylight.netconf.impl.osgi.NetconfOperationRouterImpl;
+import org.opendaylight.netconf.mapping.api.NetconfOperationService;
+import org.opendaylight.netconf.mapping.api.NetconfOperationServiceFactory;
+import org.opendaylight.protocol.framework.SessionListenerFactory;
+import org.opendaylight.protocol.framework.SessionNegotiator;
+import org.opendaylight.protocol.framework.SessionNegotiatorFactory;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.rev101004.netconf.state.Capabilities;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class NetconfServerSessionNegotiatorFactory implements SessionNegotiatorFactory<NetconfHelloMessage,
+ NetconfServerSession, NetconfServerSessionListener> {
+
+ public static final Set<String> DEFAULT_BASE_CAPABILITIES = ImmutableSet.of(
+ XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_0,
+ XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_1,
+ XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_CAPABILITY_EXI_1_0
+ );
+
+ private final Timer timer;
+
+ private final SessionIdProvider idProvider;
+ private final NetconfOperationServiceFactory aggregatedOpService;
+ private final long connectionTimeoutMillis;
+ private final NetconfMonitoringService monitoringService;
+ private static final Logger LOG = LoggerFactory.getLogger(NetconfServerSessionNegotiatorFactory.class);
+ private final Set<String> baseCapabilities;
+
+ public NetconfServerSessionNegotiatorFactory(final Timer timer,
+ final NetconfOperationServiceFactory netconfOperationProvider,
+ final SessionIdProvider idProvider, final long connectionTimeoutMillis,
+ final NetconfMonitoringService monitoringService,
+ final Set<String> baseCapabilities) {
+ this.timer = timer;
+ this.aggregatedOpService = netconfOperationProvider;
+ this.idProvider = idProvider;
+ this.connectionTimeoutMillis = connectionTimeoutMillis;
+ this.monitoringService = monitoringService;
+ this.baseCapabilities = validateBaseCapabilities(baseCapabilities == null ? DEFAULT_BASE_CAPABILITIES :
+ baseCapabilities);
+ }
+
+
+ private static ImmutableSet<String> validateBaseCapabilities(final Set<String> baseCapabilities) {
+ // Check base capabilities to be supported by the server
+ final Sets.SetView<String> unknownBaseCaps = Sets.difference(baseCapabilities, DEFAULT_BASE_CAPABILITIES);
+ Preconditions.checkArgument(unknownBaseCaps.isEmpty(),
+ "Base capabilities that will be supported by netconf server have to be subset of %s, "
+ + "unknown base capabilities: %s",
+ DEFAULT_BASE_CAPABILITIES, unknownBaseCaps);
+
+ final ImmutableSet.Builder<String> b = ImmutableSet.builder();
+ b.addAll(baseCapabilities);
+ // Base 1.0 capability is supported by default
+ b.add(XmlNetconfConstants.URN_IETF_PARAMS_NETCONF_BASE_1_0);
+ return b.build();
+ }
+
+ /**
+ * Get session negotiator.
+ *
+ * @param defunctSessionListenerFactory will not be taken into account as session listener factory can
+ * only be created after snapshot is opened, thus this method constructs
+ * proper session listener factory.
+ * @param channel Underlying channel
+ * @param promise Promise to be notified
+ * @return session negotiator
+ */
+ @Override
+ public SessionNegotiator<NetconfServerSession> getSessionNegotiator(
+ final SessionListenerFactory<NetconfServerSessionListener> defunctSessionListenerFactory,
+ final Channel channel, final Promise<NetconfServerSession> promise) {
+ final long sessionId = idProvider.getNextSessionId();
+
+ NetconfServerSessionPreferences proposal =
+ new NetconfServerSessionPreferences(createHelloMessage(sessionId, monitoringService), sessionId);
+
+ return new NetconfServerSessionNegotiator(proposal, promise, channel, timer,
+ getListener(Long.toString(sessionId), channel.parent().localAddress()), connectionTimeoutMillis);
+ }
+
+ private NetconfServerSessionListener getListener(final String netconfSessionIdForReporting,
+ final SocketAddress socketAddress) {
+ final NetconfOperationService service = getOperationServiceForAddress(netconfSessionIdForReporting,
+ socketAddress);
+ final NetconfOperationRouter operationRouter =
+ new NetconfOperationRouterImpl(service, monitoringService, netconfSessionIdForReporting);
+ return new NetconfServerSessionListener(operationRouter, monitoringService, service);
+
+ }
+
+ protected NetconfOperationService getOperationServiceForAddress(final String netconfSessionIdForReporting,
+ final SocketAddress socketAddress) {
+ return this.aggregatedOpService.createService(netconfSessionIdForReporting);
+ }
+
+ protected final NetconfOperationServiceFactory getOperationServiceFactory() {
+ return aggregatedOpService;
+ }
+
+ private NetconfHelloMessage createHelloMessage(
+ final long sessionId, final NetconfMonitoringService capabilityProvider) {
+ return NetconfHelloMessage.createServerHello(Sets.union(transformCapabilities(capabilityProvider
+ .getCapabilities()), baseCapabilities), sessionId);
+ }
+
+ public static Set<String> transformCapabilities(final Capabilities capabilities) {
+ return Sets.newHashSet(Collections2.transform(capabilities.getCapability(), Uri::getValue));
+ }
+
+}