2 * Copyright (c) 2016 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
9 package org.opendaylight.netconf.topology.singleton.impl;
11 import com.google.common.annotations.VisibleForTesting;
12 import com.google.common.base.Preconditions;
13 import com.google.common.collect.Lists;
14 import com.google.common.util.concurrent.FutureCallback;
15 import com.google.common.util.concurrent.Futures;
16 import com.google.common.util.concurrent.ListenableFuture;
17 import com.google.common.util.concurrent.MoreExecutors;
18 import io.netty.util.concurrent.EventExecutor;
19 import java.math.BigDecimal;
20 import java.net.InetSocketAddress;
22 import java.util.ArrayList;
23 import java.util.List;
25 import java.util.Objects;
26 import java.util.Optional;
27 import javax.annotation.Nullable;
28 import org.opendaylight.aaa.encrypt.AAAEncryptionService;
29 import org.opendaylight.netconf.api.NetconfMessage;
30 import org.opendaylight.netconf.client.NetconfClientSessionListener;
31 import org.opendaylight.netconf.client.conf.NetconfClientConfiguration;
32 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfiguration;
33 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfigurationBuilder;
34 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.AuthenticationHandler;
35 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.LoginPasswordHandler;
36 import org.opendaylight.netconf.sal.connect.api.RemoteDevice;
37 import org.opendaylight.netconf.sal.connect.api.RemoteDeviceHandler;
38 import org.opendaylight.netconf.sal.connect.netconf.LibraryModulesSchemas;
39 import org.opendaylight.netconf.sal.connect.netconf.NetconfDevice;
40 import org.opendaylight.netconf.sal.connect.netconf.NetconfDeviceBuilder;
41 import org.opendaylight.netconf.sal.connect.netconf.SchemalessNetconfDevice;
42 import org.opendaylight.netconf.sal.connect.netconf.auth.DatastoreBackedPublicKeyAuth;
43 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCapabilities;
44 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfDeviceCommunicator;
45 import org.opendaylight.netconf.sal.connect.netconf.listener.NetconfSessionPreferences;
46 import org.opendaylight.netconf.sal.connect.netconf.listener.UserPreferences;
47 import org.opendaylight.netconf.sal.connect.netconf.sal.KeepaliveSalFacade;
48 import org.opendaylight.netconf.sal.connect.netconf.sal.NetconfKeystoreAdapter;
49 import org.opendaylight.netconf.sal.connect.netconf.schema.YangLibrarySchemaYangSourceProvider;
50 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
51 import org.opendaylight.netconf.topology.singleton.api.RemoteDeviceConnector;
52 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfConnectorDTO;
53 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologySetup;
54 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
55 import org.opendaylight.protocol.framework.ReconnectStrategy;
56 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
57 import org.opendaylight.protocol.framework.TimedReconnectStrategy;
58 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Host;
59 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
60 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Uri;
61 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
62 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.parameters.OdlHelloMessageCapabilities;
63 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.connection.status.available.capabilities.AvailableCapability.CapabilityOrigin;
64 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
65 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.KeyAuth;
66 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPw;
67 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPwUnencrypted;
68 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.key.auth.KeyBased;
69 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.login.pw.LoginPassword;
70 import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.login.pw.unencrypted.LoginPasswordUnencrypted;
71 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
72 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
73 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
74 import org.opendaylight.yangtools.yang.model.repo.spi.PotentialSchemaSource;
75 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceRegistration;
76 import org.slf4j.Logger;
77 import org.slf4j.LoggerFactory;
79 public class RemoteDeviceConnectorImpl implements RemoteDeviceConnector {
81 private static final Logger LOG = LoggerFactory.getLogger(RemoteDeviceConnectorImpl.class);
83 // Initializes default constant instances for the case when the default schema repository
84 // directory cache/schema is used.
86 private final NetconfTopologySetup netconfTopologyDeviceSetup;
87 private final RemoteDeviceId remoteDeviceId;
88 private final String privateKeyPath;
89 private final String privateKeyPassphrase;
90 private final AAAEncryptionService encryptionService;
91 private NetconfConnectorDTO deviceCommunicatorDTO;
92 private final NetconfKeystoreAdapter keystoreAdapter;
94 public RemoteDeviceConnectorImpl(final NetconfTopologySetup netconfTopologyDeviceSetup,
95 final RemoteDeviceId remoteDeviceId) {
97 this.netconfTopologyDeviceSetup = Preconditions.checkNotNull(netconfTopologyDeviceSetup);
98 this.remoteDeviceId = remoteDeviceId;
99 this.privateKeyPath = netconfTopologyDeviceSetup.getPrivateKeyPath();
100 this.privateKeyPassphrase = netconfTopologyDeviceSetup.getPrivateKeyPassphrase();
101 this.encryptionService = netconfTopologyDeviceSetup.getEncryptionService();
102 keystoreAdapter = new NetconfKeystoreAdapter(netconfTopologyDeviceSetup.getDataBroker());
106 public void startRemoteDeviceConnection(final RemoteDeviceHandler<NetconfSessionPreferences> deviceHandler) {
108 final NetconfNode netconfNode = netconfTopologyDeviceSetup.getNode().getAugmentation(NetconfNode.class);
109 final NodeId nodeId = netconfTopologyDeviceSetup.getNode().getNodeId();
110 Preconditions.checkNotNull(netconfNode.getHost());
111 Preconditions.checkNotNull(netconfNode.getPort());
112 Preconditions.checkNotNull(netconfNode.isTcpOnly());
114 this.deviceCommunicatorDTO = createDeviceCommunicator(nodeId, netconfNode, deviceHandler);
115 final NetconfDeviceCommunicator deviceCommunicator = deviceCommunicatorDTO.getCommunicator();
116 final NetconfClientSessionListener netconfClientSessionListener = deviceCommunicatorDTO.getSessionListener();
117 final NetconfReconnectingClientConfiguration clientConfig =
118 getClientConfig(netconfClientSessionListener, netconfNode);
119 final ListenableFuture<NetconfDeviceCapabilities> future = deviceCommunicator
120 .initializeRemoteConnection(netconfTopologyDeviceSetup.getNetconfClientDispatcher(), clientConfig);
122 Futures.addCallback(future, new FutureCallback<NetconfDeviceCapabilities>() {
124 public void onSuccess(final NetconfDeviceCapabilities result) {
125 LOG.debug("{}: Connector started successfully", remoteDeviceId);
129 public void onFailure(@Nullable final Throwable throwable) {
130 LOG.error("{}: Connector failed, {}", remoteDeviceId, throwable);
132 }, MoreExecutors.directExecutor());
135 @SuppressWarnings("checkstyle:IllegalCatch")
137 public void stopRemoteDeviceConnection() {
138 if (deviceCommunicatorDTO != null) {
140 deviceCommunicatorDTO.close();
141 } catch (final Exception e) {
142 LOG.error("{}: Error at closing device communicator.", remoteDeviceId, e);
148 NetconfConnectorDTO createDeviceCommunicator(final NodeId nodeId, final NetconfNode node,
149 final RemoteDeviceHandler<NetconfSessionPreferences> deviceHandler) {
150 //setup default values since default value is not supported in mdsal
151 final long defaultRequestTimeoutMillis = node.getDefaultRequestTimeoutMillis() == null
152 ? NetconfTopologyUtils.DEFAULT_REQUEST_TIMEOUT_MILLIS : node.getDefaultRequestTimeoutMillis();
153 final long keepaliveDelay = node.getKeepaliveDelay() == null
154 ? NetconfTopologyUtils.DEFAULT_KEEPALIVE_DELAY : node.getKeepaliveDelay();
155 final boolean reconnectOnChangedSchema = node.isReconnectOnChangedSchema() == null
156 ? NetconfTopologyUtils.DEFAULT_RECONNECT_ON_CHANGED_SCHEMA : node.isReconnectOnChangedSchema();
158 RemoteDeviceHandler<NetconfSessionPreferences> salFacade = deviceHandler;
159 if (keepaliveDelay > 0) {
160 LOG.info("{}: Adding keepalive facade.", remoteDeviceId);
161 salFacade = new KeepaliveSalFacade(remoteDeviceId, salFacade,
162 netconfTopologyDeviceSetup.getKeepaliveExecutor().getExecutor(), keepaliveDelay,
163 defaultRequestTimeoutMillis);
166 final NetconfDevice.SchemaResourcesDTO schemaResourcesDTO = netconfTopologyDeviceSetup.getSchemaResourcesDTO();
168 // pre register yang library sources as fallback schemas to schema registry
169 final List<SchemaSourceRegistration<YangTextSchemaSource>> registeredYangLibSources = Lists.newArrayList();
170 if (node.getYangLibrary() != null) {
171 final String yangLibURL = node.getYangLibrary().getYangLibraryUrl().getValue();
172 final String yangLibUsername = node.getYangLibrary().getUsername();
173 final String yangLigPassword = node.getYangLibrary().getPassword();
175 final LibraryModulesSchemas libraryModulesSchemas;
176 if (yangLibURL != null) {
177 if (yangLibUsername != null && yangLigPassword != null) {
178 libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL, yangLibUsername, yangLigPassword);
180 libraryModulesSchemas = LibraryModulesSchemas.create(yangLibURL);
183 for (final Map.Entry<SourceIdentifier, URL> sourceIdentifierURLEntry :
184 libraryModulesSchemas.getAvailableModels().entrySet()) {
185 registeredYangLibSources
186 .add(schemaResourcesDTO.getSchemaRegistry().registerSchemaSource(
187 new YangLibrarySchemaYangSourceProvider(remoteDeviceId,
188 libraryModulesSchemas.getAvailableModels()),
189 PotentialSchemaSource
190 .create(sourceIdentifierURLEntry.getKey(), YangTextSchemaSource.class,
191 PotentialSchemaSource.Costs.REMOTE_IO.getValue())));
196 final RemoteDevice<NetconfSessionPreferences, NetconfMessage, NetconfDeviceCommunicator> device;
197 if (node.isSchemaless()) {
198 device = new SchemalessNetconfDevice(remoteDeviceId, salFacade);
200 device = new NetconfDeviceBuilder()
201 .setReconnectOnSchemasChange(reconnectOnChangedSchema)
202 .setSchemaResourcesDTO(schemaResourcesDTO)
203 .setGlobalProcessingExecutor(netconfTopologyDeviceSetup.getProcessingExecutor().getExecutor())
204 .setId(remoteDeviceId)
205 .setSalFacade(salFacade)
209 final Optional<NetconfSessionPreferences> userCapabilities = getUserCapabilities(node);
210 final int rpcMessageLimit =
211 node.getConcurrentRpcLimit() == null
212 ? NetconfTopologyUtils.DEFAULT_CONCURRENT_RPC_LIMIT : node.getConcurrentRpcLimit();
214 if (rpcMessageLimit < 1) {
215 LOG.info("{}: Concurrent rpc limit is smaller than 1, no limit will be enforced.", remoteDeviceId);
218 return new NetconfConnectorDTO(
219 userCapabilities.isPresent() ? new NetconfDeviceCommunicator(remoteDeviceId, device,
220 new UserPreferences(userCapabilities.get(),
221 Objects.isNull(node.getYangModuleCapabilities())
222 ? false : node.getYangModuleCapabilities().isOverride(),
223 Objects.isNull(node.getNonModuleCapabilities())
224 ? false : node.getNonModuleCapabilities().isOverride()), rpcMessageLimit)
225 : new NetconfDeviceCommunicator(remoteDeviceId, device, rpcMessageLimit), salFacade);
228 private Optional<NetconfSessionPreferences> getUserCapabilities(final NetconfNode node) {
229 if (node.getYangModuleCapabilities() == null && node.getNonModuleCapabilities() == null) {
230 return Optional.empty();
232 final List<String> capabilities = new ArrayList<>();
234 if (node.getYangModuleCapabilities() != null) {
235 capabilities.addAll(node.getYangModuleCapabilities().getCapability());
238 //non-module capabilities should not exist in yang module capabilities
239 final NetconfSessionPreferences netconfSessionPreferences = NetconfSessionPreferences.fromStrings(capabilities);
240 Preconditions.checkState(netconfSessionPreferences.getNonModuleCaps().isEmpty(),
241 "List yang-module-capabilities/capability should contain only module based capabilities. "
242 + "Non-module capabilities used: " + netconfSessionPreferences.getNonModuleCaps());
244 if (node.getNonModuleCapabilities() != null) {
245 capabilities.addAll(node.getNonModuleCapabilities().getCapability());
248 return Optional.of(NetconfSessionPreferences.fromStrings(capabilities, CapabilityOrigin.UserDefined));
251 //TODO: duplicate code
252 private InetSocketAddress getSocketAddress(final Host host, final int port) {
253 if (host.getDomainName() != null) {
254 return new InetSocketAddress(host.getDomainName().getValue(), port);
256 final IpAddress ipAddress = host.getIpAddress();
257 final String ip = ipAddress.getIpv4Address() != null ? ipAddress.getIpv4Address().getValue() :
258 ipAddress.getIpv6Address().getValue();
259 return new InetSocketAddress(ip, port);
264 NetconfReconnectingClientConfiguration getClientConfig(final NetconfClientSessionListener listener,
265 final NetconfNode node) {
267 //setup default values since default value is not supported in mdsal
268 final long clientConnectionTimeoutMillis = node.getConnectionTimeoutMillis() == null
269 ? NetconfTopologyUtils.DEFAULT_CONNECTION_TIMEOUT_MILLIS : node.getConnectionTimeoutMillis();
270 final long maxConnectionAttempts = node.getMaxConnectionAttempts() == null
271 ? NetconfTopologyUtils.DEFAULT_MAX_CONNECTION_ATTEMPTS : node.getMaxConnectionAttempts();
272 final int betweenAttemptsTimeoutMillis = node.getBetweenAttemptsTimeoutMillis() == null
273 ? NetconfTopologyUtils.DEFAULT_BETWEEN_ATTEMPTS_TIMEOUT_MILLIS : node.getBetweenAttemptsTimeoutMillis();
274 final BigDecimal sleepFactor = node.getSleepFactor() == null
275 ? NetconfTopologyUtils.DEFAULT_SLEEP_FACTOR : node.getSleepFactor();
277 final InetSocketAddress socketAddress = getSocketAddress(node.getHost(), node.getPort().getValue());
279 final ReconnectStrategyFactory sf =
280 new TimedReconnectStrategyFactory(netconfTopologyDeviceSetup.getEventExecutor(), maxConnectionAttempts,
281 betweenAttemptsTimeoutMillis, sleepFactor);
282 final ReconnectStrategy strategy = sf.createReconnectStrategy();
284 final AuthenticationHandler authHandler = getHandlerFromCredentials(node.getCredentials());
286 final NetconfReconnectingClientConfigurationBuilder builder =
287 NetconfReconnectingClientConfigurationBuilder.create()
288 .withAddress(socketAddress)
289 .withConnectionTimeoutMillis(clientConnectionTimeoutMillis)
290 .withReconnectStrategy(strategy)
291 .withAuthHandler(authHandler)
292 .withProtocol(node.isTcpOnly()
293 ? NetconfClientConfiguration.NetconfClientProtocol.TCP
294 : NetconfClientConfiguration.NetconfClientProtocol.SSH)
295 .withConnectStrategyFactory(sf)
296 .withSessionListener(listener);
298 final List<Uri> odlHelloCapabilities = getOdlHelloCapabilities(node);
299 if (odlHelloCapabilities != null) {
300 builder.withOdlHelloCapabilities(odlHelloCapabilities);
302 return builder.build();
305 private List<Uri> getOdlHelloCapabilities(final NetconfNode node) {
306 final OdlHelloMessageCapabilities helloCapabilities = node.getOdlHelloMessageCapabilities();
307 if (helloCapabilities != null) {
308 return helloCapabilities.getCapability();
313 private AuthenticationHandler getHandlerFromCredentials(final Credentials credentials) {
314 if (credentials instanceof org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
315 .rev150114.netconf.node.credentials.credentials.LoginPassword) {
316 final org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
317 .rev150114.netconf.node.credentials.credentials.LoginPassword loginPassword
318 = (org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology
319 .rev150114.netconf.node.credentials.credentials.LoginPassword) credentials;
320 return new LoginPasswordHandler(loginPassword.getUsername(), loginPassword.getPassword());
322 if (credentials instanceof LoginPwUnencrypted) {
323 final LoginPasswordUnencrypted loginPassword =
324 ((LoginPwUnencrypted) credentials).getLoginPasswordUnencrypted();
325 return new LoginPasswordHandler(loginPassword.getUsername(), loginPassword.getPassword());
327 if (credentials instanceof LoginPw) {
328 final LoginPassword loginPassword = ((LoginPw) credentials).getLoginPassword();
329 return new LoginPasswordHandler(loginPassword.getUsername(),
330 encryptionService.decrypt(loginPassword.getPassword()));
332 if (credentials instanceof KeyAuth) {
333 final KeyBased keyPair = ((KeyAuth) credentials).getKeyBased();
334 return new DatastoreBackedPublicKeyAuth(keyPair.getUsername(), keyPair.getKeyId(),
335 keystoreAdapter, encryptionService);
337 throw new IllegalStateException("Unsupported credential type: " + credentials.getClass());
340 private static final class TimedReconnectStrategyFactory implements ReconnectStrategyFactory {
341 private final Long connectionAttempts;
342 private final EventExecutor executor;
343 private final double sleepFactor;
344 private final int minSleep;
346 TimedReconnectStrategyFactory(final EventExecutor executor, final Long maxConnectionAttempts,
347 final int minSleep, final BigDecimal sleepFactor) {
348 if (maxConnectionAttempts != null && maxConnectionAttempts > 0) {
349 connectionAttempts = maxConnectionAttempts;
351 connectionAttempts = null;
354 this.sleepFactor = sleepFactor.doubleValue();
355 this.executor = executor;
356 this.minSleep = minSleep;
360 public ReconnectStrategy createReconnectStrategy() {
361 return new TimedReconnectStrategy(executor, minSleep,
362 minSleep, sleepFactor, null /*maxSleep*/, connectionAttempts, null /*deadline*/);