plugins/netconf-client-mdsal/src/test/java/org/opendaylight/netconf/client/mdsal/NetconfDeviceCommunicatorTest.java

   1 /*
   2  * Copyright (c) 2014 Brocade Communications 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 package org.opendaylight.netconf.client.mdsal;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertFalse;
  12 import static org.junit.Assert.assertNotNull;
  13 import static org.junit.Assert.assertTrue;
  14 import static org.mockito.ArgumentMatchers.any;
  15 import static org.mockito.ArgumentMatchers.eq;
  16 import static org.mockito.ArgumentMatchers.same;
  17 import static org.mockito.Mockito.CALLS_REAL_METHODS;
  18 import static org.mockito.Mockito.doNothing;
  19 import static org.mockito.Mockito.doReturn;
  20 import static org.mockito.Mockito.mock;
  21 import static org.mockito.Mockito.never;
  22 import static org.mockito.Mockito.reset;
  23 import static org.mockito.Mockito.spy;
  24 import static org.mockito.Mockito.timeout;
  25 import static org.mockito.Mockito.verify;
  26 import static org.mockito.Mockito.withSettings;
  27
  28 import com.google.common.base.CharMatcher;
  29 import com.google.common.base.Strings;
  30 import com.google.common.util.concurrent.ListenableFuture;
  31 import io.netty.channel.Channel;
  32 import io.netty.channel.ChannelFuture;
  33 import io.netty.channel.EventLoopGroup;
  34 import io.netty.channel.nio.NioEventLoopGroup;
  35 import io.netty.util.HashedWheelTimer;
  36 import io.netty.util.Timer;
  37 import io.netty.util.concurrent.Future;
  38 import io.netty.util.concurrent.GenericFutureListener;
  39 import io.netty.util.concurrent.GlobalEventExecutor;
  40 import java.io.ByteArrayInputStream;
  41 import java.net.InetSocketAddress;
  42 import java.util.ArrayList;
  43 import java.util.Set;
  44 import java.util.UUID;
  45 import java.util.concurrent.TimeUnit;
  46 import java.util.concurrent.TimeoutException;
  47 import javax.xml.parsers.ParserConfigurationException;
  48 import org.junit.Before;
  49 import org.junit.Test;
  50 import org.junit.runner.RunWith;
  51 import org.mockito.ArgumentCaptor;
  52 import org.mockito.Mock;
  53 import org.mockito.MockMakers;
  54 import org.mockito.junit.MockitoJUnitRunner;
  55 import org.opendaylight.netconf.api.CapabilityURN;
  56 import org.opendaylight.netconf.api.NamespaceURN;
  57 import org.opendaylight.netconf.api.NetconfMessage;
  58 import org.opendaylight.netconf.api.NetconfTerminationReason;
  59 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
  60 import org.opendaylight.netconf.client.NetconfClientDispatcherImpl;
  61 import org.opendaylight.netconf.client.NetconfClientSession;
  62 import org.opendaylight.netconf.client.NetconfClientSessionListener;
  63 import org.opendaylight.netconf.client.conf.NetconfClientConfiguration;
  64 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfiguration;
  65 import org.opendaylight.netconf.client.conf.NetconfReconnectingClientConfigurationBuilder;
  66 import org.opendaylight.netconf.client.mdsal.api.NetconfSessionPreferences;
  67 import org.opendaylight.netconf.client.mdsal.api.RemoteDevice;
  68 import org.opendaylight.netconf.client.mdsal.api.RemoteDeviceId;
  69 import org.opendaylight.netconf.client.mdsal.impl.NetconfMessageTransformUtil;
  70 import org.opendaylight.netconf.nettyutil.ReconnectStrategy;
  71 import org.opendaylight.netconf.nettyutil.TimedReconnectStrategy;
  72 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.LoginPasswordHandler;
  73 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.SessionIdType;
  74 import org.opendaylight.yangtools.util.xml.UntrustedXML;
  75 import org.opendaylight.yangtools.yang.common.ErrorSeverity;
  76 import org.opendaylight.yangtools.yang.common.ErrorTag;
  77 import org.opendaylight.yangtools.yang.common.ErrorType;
  78 import org.opendaylight.yangtools.yang.common.QName;
  79 import org.opendaylight.yangtools.yang.common.RpcError;
  80 import org.opendaylight.yangtools.yang.common.RpcResult;
  81 import org.opendaylight.yangtools.yang.common.Uint32;
  82 import org.slf4j.Logger;
  83 import org.slf4j.LoggerFactory;
  84 import org.w3c.dom.Document;
  85 import org.w3c.dom.Element;
  86
  87 @RunWith(MockitoJUnitRunner.StrictStubs.class)
  88 public class NetconfDeviceCommunicatorTest {
  89     private static final Logger LOG = LoggerFactory.getLogger(NetconfDeviceCommunicatorTest.class);
  90     private static final SessionIdType SESSION_ID = new SessionIdType(Uint32.ONE);
  91
  92     @Mock
  93     RemoteDevice<NetconfDeviceCommunicator> mockDevice;
  94
  95     private NetconfClientSession spySession;
  96     private NetconfDeviceCommunicator communicator;
  97
  98     @Before
  99     public void setUp() throws Exception {
 100         communicator = new NetconfDeviceCommunicator(
 101                 new RemoteDeviceId("test", InetSocketAddress.createUnresolved("localhost", 22)), mockDevice, 10);
 102         // FIXME: spy() except we override the MockMaker in use
 103         spySession = mock(NetconfClientSession.class, withSettings()
 104             .spiedInstance(new NetconfClientSession(mock(NetconfClientSessionListener.class), mock(Channel.class),
 105                 SESSION_ID, Set.of()))
 106             .defaultAnswer(CALLS_REAL_METHODS)
 107             .mockMaker(MockMakers.SUBCLASS));
 108     }
 109
 110     void setupSession() {
 111         doNothing().when(mockDevice).onRemoteSessionUp(any(NetconfSessionPreferences.class),
 112                 any(NetconfDeviceCommunicator.class));
 113         communicator.onSessionUp(spySession);
 114     }
 115
 116     private ListenableFuture<RpcResult<NetconfMessage>> sendRequest() throws Exception {
 117         return sendRequest(UUID.randomUUID().toString(), true);
 118     }
 119
 120     @SuppressWarnings("unchecked")
 121     private ListenableFuture<RpcResult<NetconfMessage>> sendRequest(final String messageID,
 122                                                                     final boolean doLastTest) throws Exception {
 123         Document doc = UntrustedXML.newDocumentBuilder().newDocument();
 124         Element element = doc.createElement("request");
 125         element.setAttribute("message-id", messageID);
 126         doc.appendChild(element);
 127         NetconfMessage message = new NetconfMessage(doc);
 128
 129         ChannelFuture mockChannelFuture = mock(ChannelFuture.class);
 130         doReturn(mockChannelFuture).when(mockChannelFuture)
 131                 .addListener(any(GenericFutureListener.class));
 132         doReturn(mockChannelFuture).when(spySession).sendMessage(same(message));
 133
 134         ListenableFuture<RpcResult<NetconfMessage>> resultFuture =
 135                 communicator.sendRequest(message, QName.create("", "mockRpc"));
 136         if (doLastTest) {
 137             assertNotNull("ListenableFuture is null", resultFuture);
 138         }
 139         return resultFuture;
 140     }
 141
 142     @Test
 143     public void testOnSessionUp() {
 144         final var testCapability = "urn:opendaylight:params:xml:ns:test?module=test-module&revision=2014-06-02";
 145         final var serverCapabilities = Set.of(
 146             CapabilityURN.ROLLBACK_ON_ERROR,
 147             NetconfMessageTransformUtil.IETF_NETCONF_MONITORING.getNamespace().toString(),
 148             testCapability);
 149         doReturn(serverCapabilities).when(spySession).getServerCapabilities();
 150
 151         final var netconfSessionPreferences = ArgumentCaptor.forClass(NetconfSessionPreferences.class);
 152         doNothing().when(mockDevice).onRemoteSessionUp(netconfSessionPreferences.capture(), eq(communicator));
 153
 154         communicator.onSessionUp(spySession);
 155
 156         verify(spySession).getServerCapabilities();
 157         verify(mockDevice).onRemoteSessionUp(netconfSessionPreferences.capture(), eq(communicator));
 158
 159         NetconfSessionPreferences actualCapabilites = netconfSessionPreferences.getValue();
 160         assertTrue(actualCapabilites.containsNonModuleCapability(
 161                 "urn:ietf:params:netconf:capability:rollback-on-error:1.0"));
 162         assertFalse(actualCapabilites.containsNonModuleCapability(testCapability));
 163         assertEquals(Set.of(QName.create("urn:opendaylight:params:xml:ns:test", "2014-06-02", "test-module")),
 164                 actualCapabilites.moduleBasedCaps().keySet());
 165         assertTrue(actualCapabilites.isRollbackSupported());
 166         assertTrue(actualCapabilites.isMonitoringSupported());
 167         assertEquals(SESSION_ID, actualCapabilites.sessionId());
 168     }
 169
 170     @SuppressWarnings("unchecked")
 171     @Test(timeout = 5000)
 172     public void testOnSessionDown() throws Exception {
 173         setupSession();
 174
 175         ListenableFuture<RpcResult<NetconfMessage>> resultFuture1 = sendRequest();
 176         final ListenableFuture<RpcResult<NetconfMessage>> resultFuture2 = sendRequest();
 177
 178         doNothing().when(mockDevice).onRemoteSessionDown();
 179
 180         communicator.onSessionDown(spySession, new Exception("mock ex"));
 181
 182         verifyErrorRpcResult(resultFuture1.get(), ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED);
 183         verifyErrorRpcResult(resultFuture2.get(), ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED);
 184
 185         verify(mockDevice).onRemoteSessionDown();
 186
 187         reset(mockDevice);
 188
 189         communicator.onSessionDown(spySession, new Exception("mock ex"));
 190
 191         verify(mockDevice, never()).onRemoteSessionDown();
 192     }
 193
 194     @Test
 195     public void testOnSessionTerminated() throws Exception {
 196         setupSession();
 197
 198         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest();
 199
 200         doNothing().when(mockDevice).onRemoteSessionDown();
 201
 202         String reasonText = "testing terminate";
 203         NetconfTerminationReason reason = new NetconfTerminationReason(reasonText);
 204         communicator.onSessionTerminated(spySession, reason);
 205
 206         RpcError rpcError = verifyErrorRpcResult(resultFuture.get(), ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED);
 207         assertEquals("RpcError message", reasonText, rpcError.getMessage());
 208
 209         verify(mockDevice).onRemoteSessionDown();
 210     }
 211
 212     @Test
 213     public void testClose() throws Exception {
 214         communicator.close();
 215         verify(mockDevice, never()).onRemoteSessionDown();
 216     }
 217
 218     @SuppressWarnings({"rawtypes", "unchecked"})
 219     @Test
 220     public void testSendRequest() throws Exception {
 221         setupSession();
 222
 223         NetconfMessage message = new NetconfMessage(UntrustedXML.newDocumentBuilder().newDocument());
 224         QName rpc = QName.create("", "mockRpc");
 225
 226         ArgumentCaptor<GenericFutureListener> futureListener =
 227                 ArgumentCaptor.forClass(GenericFutureListener.class);
 228
 229         ChannelFuture mockChannelFuture = mock(ChannelFuture.class);
 230         doReturn(mockChannelFuture).when(mockChannelFuture).addListener(futureListener.capture());
 231         doReturn(mockChannelFuture).when(spySession).sendMessage(same(message));
 232
 233         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = communicator.sendRequest(message, rpc);
 234
 235         verify(spySession).sendMessage(same(message));
 236
 237         assertNotNull("ListenableFuture is null", resultFuture);
 238
 239         verify(mockChannelFuture).addListener(futureListener.capture());
 240         Future<Void> operationFuture = mock(Future.class);
 241         doReturn(true).when(operationFuture).isSuccess();
 242         futureListener.getValue().operationComplete(operationFuture);
 243
 244         try {
 245             resultFuture.get(1, TimeUnit.MILLISECONDS); // verify it's not cancelled or has an error set
 246         } catch (TimeoutException e) {
 247             LOG.info("Operation failed due timeout.");
 248         } // expected
 249     }
 250
 251     @Test
 252     public void testSendRequestWithNoSession() throws Exception {
 253         NetconfMessage message = new NetconfMessage(UntrustedXML.newDocumentBuilder().newDocument());
 254         QName rpc = QName.create("", "mockRpc");
 255
 256         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = communicator.sendRequest(message, rpc);
 257
 258         assertNotNull("ListenableFuture is null", resultFuture);
 259
 260         // Should have an immediate result
 261         RpcResult<NetconfMessage> rpcResult = resultFuture.get(3, TimeUnit.MILLISECONDS);
 262
 263         verifyErrorRpcResult(rpcResult, ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED);
 264     }
 265
 266     private static NetconfMessage createSuccessResponseMessage(final String messageID)
 267             throws ParserConfigurationException {
 268         Document doc = UntrustedXML.newDocumentBuilder().newDocument();
 269         Element rpcReply = doc.createElementNS(NamespaceURN.BASE, XmlNetconfConstants.RPC_REPLY_KEY);
 270         rpcReply.setAttribute("message-id", messageID);
 271         Element element = doc.createElementNS("ns", "data");
 272         element.setTextContent(messageID);
 273         rpcReply.appendChild(element);
 274         doc.appendChild(rpcReply);
 275
 276         return new NetconfMessage(doc);
 277     }
 278
 279     @SuppressWarnings({ "rawtypes", "unchecked" })
 280     @Test
 281     public void testSendRequestWithWithSendFailure() throws Exception {
 282         setupSession();
 283
 284         NetconfMessage message = new NetconfMessage(UntrustedXML.newDocumentBuilder().newDocument());
 285         QName rpc = QName.create("", "mockRpc");
 286
 287         ArgumentCaptor<GenericFutureListener> futureListener =
 288                 ArgumentCaptor.forClass(GenericFutureListener.class);
 289
 290         ChannelFuture mockChannelFuture = mock(ChannelFuture.class);
 291         doReturn(mockChannelFuture).when(mockChannelFuture).addListener(futureListener.capture());
 292         doReturn(mockChannelFuture).when(spySession).sendMessage(same(message));
 293
 294         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = communicator.sendRequest(message, rpc);
 295
 296         assertNotNull("ListenableFuture is null", resultFuture);
 297
 298         verify(mockChannelFuture).addListener(futureListener.capture());
 299
 300         Future<Void> operationFuture = mock(Future.class);
 301         doReturn(false).when(operationFuture).isSuccess();
 302         doReturn(new Exception("mock error")).when(operationFuture).cause();
 303         futureListener.getValue().operationComplete(operationFuture);
 304
 305         // Should have an immediate result
 306         RpcResult<NetconfMessage> rpcResult = resultFuture.get(3, TimeUnit.MILLISECONDS);
 307
 308         RpcError rpcError = verifyErrorRpcResult(rpcResult, ErrorType.TRANSPORT, ErrorTag.OPERATION_FAILED);
 309         assertEquals("RpcError message contains \"mock error\"", true,
 310                 rpcError.getMessage().contains("mock error"));
 311     }
 312
 313     //Test scenario verifying whether missing message is handled
 314     @Test
 315     public void testOnMissingResponseMessage() throws Exception {
 316
 317         setupSession();
 318
 319         String messageID1 = UUID.randomUUID().toString();
 320         ListenableFuture<RpcResult<NetconfMessage>> resultFuture1 = sendRequest(messageID1, true);
 321
 322         String messageID2 = UUID.randomUUID().toString();
 323         ListenableFuture<RpcResult<NetconfMessage>> resultFuture2 = sendRequest(messageID2, true);
 324
 325         String messageID3 = UUID.randomUUID().toString();
 326         ListenableFuture<RpcResult<NetconfMessage>> resultFuture3 = sendRequest(messageID3, true);
 327
 328         //response messages 1,2 are omitted
 329         communicator.onMessage(spySession, createSuccessResponseMessage(messageID3));
 330
 331         verifyResponseMessage(resultFuture3.get(), messageID3);
 332     }
 333
 334     @Test
 335     public void testOnSuccessfulResponseMessage() throws Exception {
 336         setupSession();
 337
 338         String messageID1 = UUID.randomUUID().toString();
 339         ListenableFuture<RpcResult<NetconfMessage>> resultFuture1 = sendRequest(messageID1, true);
 340
 341         String messageID2 = UUID.randomUUID().toString();
 342         final ListenableFuture<RpcResult<NetconfMessage>> resultFuture2 = sendRequest(messageID2, true);
 343
 344         communicator.onMessage(spySession, createSuccessResponseMessage(messageID1));
 345         communicator.onMessage(spySession, createSuccessResponseMessage(messageID2));
 346
 347         verifyResponseMessage(resultFuture1.get(), messageID1);
 348         verifyResponseMessage(resultFuture2.get(), messageID2);
 349     }
 350
 351     @Test
 352     public void testOnResponseMessageWithError() throws Exception {
 353         setupSession();
 354
 355         String messageID = UUID.randomUUID().toString();
 356         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest(messageID, true);
 357
 358         communicator.onMessage(spySession, createErrorResponseMessage(messageID));
 359
 360         RpcError rpcError = verifyErrorRpcResult(resultFuture.get(), ErrorType.RPC, ErrorTag.MISSING_ATTRIBUTE);
 361         assertEquals("RpcError message", "Missing attribute", rpcError.getMessage());
 362
 363         String errorInfo = rpcError.getInfo();
 364         assertNotNull("RpcError info is null", errorInfo);
 365         assertTrue("Error info contains \"foo\"", errorInfo.contains("<bad-attribute>foo</bad-attribute>"));
 366         assertTrue("Error info contains \"bar\"", errorInfo.contains("<bad-element>bar</bad-element>"));
 367     }
 368
 369     @Test
 370     public void testOnResponseMessageWithMultipleErrors() throws Exception {
 371         setupSession();
 372
 373         String messageID = UUID.randomUUID().toString();
 374         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest(messageID, true);
 375
 376         communicator.onMessage(spySession, createMultiErrorResponseMessage(messageID));
 377
 378         RpcError rpcError = verifyErrorRpcResult(resultFuture.get(), ErrorType.PROTOCOL, ErrorTag.OPERATION_FAILED);
 379
 380         String errorInfo = rpcError.getInfo();
 381         assertNotNull("RpcError info is null", errorInfo);
 382
 383         String errorInfoMessages = rpcError.getInfo();
 384         String errMsg1 = "Number of member links configured, i.e [1], "
 385                 + "for interface [ae0]is lesser than the required minimum [2].";
 386         String errMsg2 = "configuration check-out failed";
 387         assertTrue(String.format("Error info contains \"%s\" or \"%s\'", errMsg1, errMsg2),
 388                 errorInfoMessages.contains(errMsg1) && errorInfoMessages.contains(errMsg2));
 389     }
 390
 391     /**
 392      * Test whether reconnect is scheduled properly.
 393      */
 394     @Test
 395     public void testNetconfDeviceReconnectInCommunicator() {
 396         final RemoteDevice<NetconfDeviceCommunicator> device = mock(RemoteDevice.class);
 397
 398         final TimedReconnectStrategy timedReconnectStrategy =
 399                 new TimedReconnectStrategy(GlobalEventExecutor.INSTANCE, 10000, 0, 1.0, null, 100L, null);
 400         final ReconnectStrategy reconnectStrategy = spy(new ReconnectStrategy() {
 401             @Override
 402             @Deprecated
 403             public int getConnectTimeout() throws Exception {
 404                 return timedReconnectStrategy.getConnectTimeout();
 405             }
 406
 407             @Override
 408             @Deprecated
 409             public Future<Void> scheduleReconnect(final Throwable cause) {
 410                 return timedReconnectStrategy.scheduleReconnect(cause);
 411             }
 412
 413             @Override
 414             @Deprecated
 415             public void reconnectSuccessful() {
 416                 timedReconnectStrategy.reconnectSuccessful();
 417             }
 418         });
 419
 420         final EventLoopGroup group = new NioEventLoopGroup();
 421         final Timer time = new HashedWheelTimer();
 422         try {
 423             final NetconfDeviceCommunicator listener = new NetconfDeviceCommunicator(
 424                     new RemoteDeviceId("test", InetSocketAddress.createUnresolved("localhost", 22)), device, 10);
 425             final NetconfReconnectingClientConfiguration cfg = NetconfReconnectingClientConfigurationBuilder.create()
 426                     .withAddress(new InetSocketAddress("localhost", 65000))
 427                     .withReconnectStrategy(reconnectStrategy)
 428                     .withConnectStrategyFactory(() -> reconnectStrategy)
 429                     .withAuthHandler(new LoginPasswordHandler("admin", "admin"))
 430                     .withConnectionTimeoutMillis(10000)
 431                     .withProtocol(NetconfClientConfiguration.NetconfClientProtocol.SSH)
 432                     .withSessionListener(listener)
 433                     .build();
 434
 435             listener.initializeRemoteConnection(new NetconfClientDispatcherImpl(group, group, time), cfg);
 436
 437             verify(reconnectStrategy,
 438                     timeout(TimeUnit.MINUTES.toMillis(4)).times(101)).scheduleReconnect(any(Throwable.class));
 439         } finally {
 440             time.stop();
 441             group.shutdownGracefully();
 442         }
 443     }
 444
 445     @Test
 446     public void testOnResponseMessageWithWrongMessageID() throws Exception {
 447         setupSession();
 448
 449         String messageID = UUID.randomUUID().toString();
 450         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest(messageID, true);
 451
 452         communicator.onMessage(spySession, createSuccessResponseMessage(UUID.randomUUID().toString()));
 453
 454         RpcError rpcError = verifyErrorRpcResult(resultFuture.get(), ErrorType.PROTOCOL, ErrorTag.BAD_ATTRIBUTE);
 455         assertFalse("RpcError message non-empty", Strings.isNullOrEmpty(rpcError.getMessage()));
 456
 457         String errorInfo = rpcError.getInfo();
 458         assertNotNull("RpcError info is null", errorInfo);
 459         assertTrue("Error info contains \"actual-message-id\"", errorInfo.contains("actual-message-id"));
 460         assertTrue("Error info contains \"expected-message-id\"", errorInfo.contains("expected-message-id"));
 461     }
 462
 463     @Test
 464     public void testConcurrentMessageLimit() throws Exception {
 465         setupSession();
 466         ArrayList<String> messageID = new ArrayList<>();
 467
 468         for (int i = 0; i < 10; i++) {
 469             messageID.add(UUID.randomUUID().toString());
 470             ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest(messageID.get(i), false);
 471             assertEquals("ListenableFuture is null", true, resultFuture instanceof UncancellableFuture);
 472         }
 473
 474         final String notWorkingMessageID = UUID.randomUUID().toString();
 475         ListenableFuture<RpcResult<NetconfMessage>> resultFuture = sendRequest(notWorkingMessageID, false);
 476         assertEquals("ListenableFuture is null", false, resultFuture instanceof UncancellableFuture);
 477
 478         communicator.onMessage(spySession, createSuccessResponseMessage(messageID.get(0)));
 479
 480         resultFuture = sendRequest(messageID.get(0), false);
 481         assertNotNull("ListenableFuture is null", resultFuture);
 482     }
 483
 484     private static NetconfMessage createMultiErrorResponseMessage(final String messageID) throws Exception {
 485         // multiple rpc-errors which simulate actual response like in NETCONF-666
 486         String xmlStr = "<nc:rpc-reply xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\" xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" xmlns:junos=\"http://xml.juniper.net/junos/18.4R1/junos\""
 487                 + "           message-id=\"" + messageID + "\">"
 488                 + "<nc:rpc-error>\n"
 489                 + "<nc:error-type>protocol</nc:error-type>\n"
 490                 + "<nc:error-tag>operation-failed</nc:error-tag>\n"
 491                 + "<nc:error-severity>error</nc:error-severity>\n"
 492                 + "<source-daemon>\n"
 493                 + "dcd\n"
 494                 + "</source-daemon>\n"
 495                 + "<nc:error-message>\n"
 496                 + "Number of member links configured, i.e [1], "
 497                 + "for interface [ae0]is lesser than the required minimum [2].\n"
 498                 + "</nc:error-message>\n"
 499                 + "</nc:rpc-error>\n"
 500                 + "<nc:rpc-error>\n"
 501                 + "<nc:error-type>protocol</nc:error-type>\n"
 502                 + "<nc:error-tag>operation-failed</nc:error-tag>\n"
 503                 + "<nc:error-severity>error</nc:error-severity>\n"
 504                 + "<nc:error-message>\n"
 505                 + "configuration check-out failed\n"
 506                 + "</nc:error-message>\n"
 507                 + "</nc:rpc-error>\n"
 508                 + "</nc:rpc-reply>";
 509
 510         ByteArrayInputStream bis = new ByteArrayInputStream(xmlStr.getBytes());
 511         Document doc = UntrustedXML.newDocumentBuilder().parse(bis);
 512         return new NetconfMessage(doc);
 513     }
 514
 515     private static NetconfMessage createErrorResponseMessage(final String messageID) throws Exception {
 516         String xmlStr = "<rpc-reply xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\""
 517                 + "           message-id=\"" + messageID + "\">"
 518                 + "  <rpc-error>"
 519                 + "    <error-type>rpc</error-type>"
 520                 + "    <error-tag>missing-attribute</error-tag>"
 521                 + "    <error-severity>error</error-severity>"
 522                 + "    <error-message>Missing attribute</error-message>"
 523                 + "    <error-info>"
 524                 + "      <bad-attribute>foo</bad-attribute>"
 525                 + "      <bad-element>bar</bad-element>"
 526                 + "    </error-info>"
 527                 + "  </rpc-error>"
 528                 + "</rpc-reply>";
 529
 530         ByteArrayInputStream bis = new ByteArrayInputStream(xmlStr.getBytes());
 531         Document doc = UntrustedXML.newDocumentBuilder().parse(bis);
 532         return new NetconfMessage(doc);
 533     }
 534
 535     private static void verifyResponseMessage(final RpcResult<NetconfMessage> rpcResult, final String dataText) {
 536         assertNotNull("RpcResult is null", rpcResult);
 537         assertTrue("isSuccessful", rpcResult.isSuccessful());
 538         NetconfMessage messageResult = rpcResult.getResult();
 539         assertNotNull("getResult", messageResult);
 540 //        List<SimpleNode<?>> nodes = messageResult.getSimpleNodesByName(
 541 //                                         QName.create( URI.create( "ns" ), null, "data" ) );
 542 //        assertNotNull( "getSimpleNodesByName", nodes );
 543 //        assertEquals( "List<SimpleNode<?>> size", 1, nodes.size() );
 544 //        assertEquals( "SimpleNode value", dataText, nodes.iterator().next().getValue() );
 545     }
 546
 547     private static RpcError verifyErrorRpcResult(final RpcResult<NetconfMessage> rpcResult,
 548                                                  final ErrorType expErrorType, final ErrorTag expErrorTag) {
 549         assertNotNull("RpcResult is null", rpcResult);
 550         assertFalse("isSuccessful", rpcResult.isSuccessful());
 551         assertNotNull("RpcResult errors is null", rpcResult.getErrors());
 552         assertEquals("Errors size", 1, rpcResult.getErrors().size());
 553         RpcError rpcError = rpcResult.getErrors().iterator().next();
 554         assertEquals("getErrorSeverity", ErrorSeverity.ERROR, rpcError.getSeverity());
 555         assertEquals("getErrorType", expErrorType, rpcError.getErrorType());
 556         assertEquals("getErrorTag", expErrorTag, rpcError.getTag());
 557
 558         final String msg = rpcError.getMessage();
 559         assertNotNull("getMessage is null", msg);
 560         assertFalse("getMessage is empty", msg.isEmpty());
 561         assertFalse("getMessage is blank", CharMatcher.whitespace().matchesAllOf(msg));
 562         return rpcError;
 563     }
 564 }