2 * Copyright (c) 2014 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.sal.connect.netconf.schema.mapping;
10 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.CREATE_SUBSCRIPTION_RPC_QNAME;
11 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.IETF_NETCONF_NOTIFICATIONS;
12 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.NETCONF_URI;
13 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.toPath;
15 import com.google.common.annotations.VisibleForTesting;
16 import com.google.common.base.Preconditions;
17 import com.google.common.collect.ImmutableSet;
18 import com.google.common.collect.ImmutableSet.Builder;
19 import com.google.common.collect.Maps;
20 import com.google.common.collect.Multimap;
21 import com.google.common.collect.Multimaps;
22 import java.io.IOException;
24 import java.net.URISyntaxException;
25 import java.time.Instant;
26 import java.util.Collection;
27 import java.util.Collections;
30 import javax.xml.stream.XMLStreamException;
31 import javax.xml.transform.dom.DOMResult;
32 import javax.xml.transform.dom.DOMSource;
33 import org.opendaylight.mdsal.dom.api.DOMActionResult;
34 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
35 import org.opendaylight.mdsal.dom.api.DOMEvent;
36 import org.opendaylight.mdsal.dom.api.DOMNotification;
37 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
38 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
39 import org.opendaylight.mdsal.dom.spi.SimpleDOMActionResult;
40 import org.opendaylight.netconf.api.NetconfMessage;
41 import org.opendaylight.netconf.api.xml.MissingNameSpaceException;
42 import org.opendaylight.netconf.api.xml.XmlElement;
43 import org.opendaylight.netconf.sal.connect.api.MessageTransformer;
44 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil;
45 import org.opendaylight.netconf.sal.connect.util.MessageCounter;
46 import org.opendaylight.yangtools.yang.common.QName;
47 import org.opendaylight.yangtools.yang.common.Revision;
48 import org.opendaylight.yangtools.yang.common.RpcError;
49 import org.opendaylight.yangtools.yang.common.YangConstants;
50 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
51 import org.opendaylight.yangtools.yang.data.api.schema.AnyXmlNode;
52 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
53 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
54 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
55 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
56 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
57 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
58 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
59 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
60 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
61 import org.opendaylight.yangtools.yang.model.api.ActionNodeContainer;
62 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
63 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
64 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
65 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
66 import org.opendaylight.yangtools.yang.model.api.OperationDefinition;
67 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
68 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
69 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
70 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
71 import org.slf4j.Logger;
72 import org.slf4j.LoggerFactory;
73 import org.w3c.dom.Document;
74 import org.w3c.dom.Element;
75 import org.xml.sax.SAXException;
77 public class NetconfMessageTransformer implements MessageTransformer<NetconfMessage> {
79 private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageTransformer.class);
81 private static final ImmutableSet<URI> BASE_OR_NOTIFICATION_NS = ImmutableSet.of(
83 IETF_NETCONF_NOTIFICATIONS.getNamespace(),
84 CREATE_SUBSCRIPTION_RPC_QNAME.getNamespace());
86 private final SchemaContext schemaContext;
87 private final BaseSchema baseSchema;
88 private final MessageCounter counter;
89 private final Map<QName, RpcDefinition> mappedRpcs;
90 private final Multimap<QName, NotificationDefinition> mappedNotifications;
91 private final boolean strictParsing;
92 private final Set<ActionDefinition> actions;
94 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing) {
95 this(schemaContext, strictParsing, BaseSchema.BASE_NETCONF_CTX);
98 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing,
99 final BaseSchema baseSchema) {
100 this.counter = new MessageCounter();
101 this.schemaContext = schemaContext;
102 this.mappedRpcs = Maps.uniqueIndex(schemaContext.getOperations(), SchemaNode::getQName);
103 this.actions = getActions();
104 this.mappedNotifications = Multimaps.index(schemaContext.getNotifications(),
105 node -> node.getQName().withoutRevision());
106 this.baseSchema = baseSchema;
107 this.strictParsing = strictParsing;
111 Set<ActionDefinition> getActions() {
112 final Builder<ActionDefinition> builder = ImmutableSet.builder();
113 for (DataSchemaNode dataSchemaNode : schemaContext.getChildNodes()) {
114 if (dataSchemaNode instanceof ActionNodeContainer) {
115 findAction(dataSchemaNode, builder);
118 return builder.build();
121 private void findAction(final DataSchemaNode dataSchemaNode, final Builder<ActionDefinition> builder) {
122 if (dataSchemaNode instanceof ActionNodeContainer) {
123 final ActionNodeContainer containerSchemaNode = (ActionNodeContainer) dataSchemaNode;
124 for (ActionDefinition actionDefinition : containerSchemaNode.getActions()) {
125 builder.add(actionDefinition);
128 if (dataSchemaNode instanceof DataNodeContainer) {
129 for (DataSchemaNode innerDataSchemaNode : ((DataNodeContainer) dataSchemaNode).getChildNodes()) {
130 findAction(innerDataSchemaNode, builder);
136 public synchronized DOMNotification toNotification(final NetconfMessage message) {
137 final Map.Entry<Instant, XmlElement> stripped = NetconfMessageTransformUtil.stripNotification(message);
138 final QName notificationNoRev;
140 notificationNoRev = QName.create(
141 stripped.getValue().getNamespace(), stripped.getValue().getName()).withoutRevision();
142 } catch (final MissingNameSpaceException e) {
143 throw new IllegalArgumentException(
144 "Unable to parse notification " + message + ", cannot find namespace", e);
146 final Collection<NotificationDefinition> notificationDefinitions = mappedNotifications.get(notificationNoRev);
147 Preconditions.checkArgument(notificationDefinitions.size() > 0,
148 "Unable to parse notification %s, unknown notification. Available notifications: %s",
149 notificationDefinitions, mappedNotifications.keySet());
151 final NotificationDefinition mostRecentNotification = getMostRecentNotification(notificationDefinitions);
153 final ContainerSchemaNode notificationAsContainerSchemaNode =
154 NetconfMessageTransformUtil.createSchemaForNotification(mostRecentNotification);
156 final Element element = stripped.getValue().getDomElement();
157 final ContainerNode content;
159 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
160 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
161 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
162 notificationAsContainerSchemaNode, strictParsing);
163 xmlParser.traverse(new DOMSource(element));
164 content = (ContainerNode) resultHolder.getResult();
165 } catch (XMLStreamException | URISyntaxException | IOException | SAXException
166 | UnsupportedOperationException e) {
167 throw new IllegalArgumentException(String.format("Failed to parse notification %s", element), e);
169 return new NetconfDeviceNotification(content, stripped.getKey());
172 private static NotificationDefinition getMostRecentNotification(
173 final Collection<NotificationDefinition> notificationDefinitions) {
174 return Collections.max(notificationDefinitions, (o1, o2) ->
175 Revision.compare(o1.getQName().getRevision(), o2.getQName().getRevision()));
179 public NetconfMessage toRpcRequest(final SchemaPath rpc, final NormalizedNode<?, ?> payload) {
180 // In case no input for rpc is defined, we can simply construct the payload here
181 final QName rpcQName = rpc.getLastComponent();
183 // Determine whether a base netconf operation is being invoked
184 // and also check if the device exposed model for base netconf.
185 // If no, use pre built base netconf operations model
186 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
187 final Map<QName, RpcDefinition> currentMappedRpcs;
188 if (needToUseBaseCtx) {
189 currentMappedRpcs = baseSchema.getMappedRpcs();
191 currentMappedRpcs = mappedRpcs;
194 final RpcDefinition mappedRpc = Preconditions.checkNotNull(currentMappedRpcs.get(rpcQName),
195 "Unknown rpc %s, available rpcs: %s", rpcQName, currentMappedRpcs.keySet());
196 if (mappedRpc.getInput().getChildNodes().isEmpty()) {
197 return new NetconfMessage(NetconfMessageTransformUtil
198 .prepareDomResultForRpcRequest(rpcQName, counter).getNode().getOwnerDocument());
201 Preconditions.checkNotNull(payload, "Transforming an rpc with input: %s, payload cannot be null", rpcQName);
203 Preconditions.checkArgument(payload instanceof ContainerNode,
204 "Transforming an rpc with input: %s, payload has to be a container, but was: %s", rpcQName, payload);
205 // Set the path to the input of rpc for the node stream writer
206 final SchemaPath rpcInput = rpc.createChild(YangConstants.operationInputQName(rpcQName.getModule()));
207 final DOMResult result = NetconfMessageTransformUtil.prepareDomResultForRpcRequest(rpcQName, counter);
210 // If the schema context for netconf device does not contain model for base netconf operations,
211 // use default pre build context with just the base model
212 // This way operations like lock/unlock are supported even if the source for base model was not provided
213 final SchemaContext ctx = needToUseBaseCtx ? baseSchema.getSchemaContext() : schemaContext;
214 NetconfMessageTransformUtil.writeNormalizedRpc((ContainerNode) payload, result, rpcInput, ctx);
215 } catch (final XMLStreamException | IOException | IllegalStateException e) {
216 throw new IllegalStateException("Unable to serialize " + rpcInput, e);
219 final Document node = result.getNode().getOwnerDocument();
221 return new NetconfMessage(node);
225 public NetconfMessage toActionRequest(SchemaPath action, final DOMDataTreeIdentifier domDataTreeIdentifier,
226 final NormalizedNode<?, ?> payload) {
227 ActionDefinition actionDefinition = null;
228 SchemaPath schemaPath = action;
229 for (ActionDefinition actionDef : actions) {
230 if (actionDef.getPath().getLastComponent().equals(action.getLastComponent())) {
231 actionDefinition = actionDef;
232 schemaPath = actionDef.getPath();
235 Preconditions.checkNotNull(actionDefinition, "Action does not exist: %s", action.getLastComponent());
237 if (actionDefinition.getInput().getChildNodes().isEmpty()) {
238 return new NetconfMessage(NetconfMessageTransformUtil.prepareDomResultForActionRequest(
239 DataSchemaContextTree.from(schemaContext), domDataTreeIdentifier, action, counter,
240 actionDefinition.getQName().getLocalName())
241 .getNode().getOwnerDocument());
244 Preconditions.checkNotNull(payload, "Transforming an action with input: %s, payload cannot be null",
245 action.getLastComponent());
246 Preconditions.checkArgument(payload instanceof ContainerNode,
247 "Transforming an rpc with input: %s, payload has to be a container, but was: %s",
248 action.getLastComponent(), payload);
249 // Set the path to the input of rpc for the node stream writer
250 action = action.createChild(QName.create(action.getLastComponent(), "input").intern());
251 final DOMResult result = NetconfMessageTransformUtil.prepareDomResultForActionRequest(
252 DataSchemaContextTree.from(schemaContext), domDataTreeIdentifier, action, counter,
253 actionDefinition.getQName().getLocalName());
256 NetconfMessageTransformUtil.writeNormalizedRpc((ContainerNode) payload, result,
257 schemaPath.createChild(QName.create(action.getLastComponent(), "input").intern()), schemaContext);
258 } catch (final XMLStreamException | IOException | IllegalStateException e) {
259 throw new IllegalStateException("Unable to serialize " + action, e);
262 final Document node = result.getNode().getOwnerDocument();
264 return new NetconfMessage(node);
267 private static boolean isBaseOrNotificationRpc(final QName rpc) {
268 return BASE_OR_NOTIFICATION_NS.contains(rpc.getNamespace());
272 public synchronized DOMRpcResult toRpcResult(final NetconfMessage message, final SchemaPath rpc) {
273 final NormalizedNode<?, ?> normalizedNode;
274 final QName rpcQName = rpc.getLastComponent();
275 if (NetconfMessageTransformUtil.isDataRetrievalOperation(rpcQName)) {
276 final Element xmlData = NetconfMessageTransformUtil.getDataSubtree(message.getDocument());
277 final AnyXmlNode anyXmlNode = Builders.anyXmlBuilder()
278 .withNodeIdentifier(NetconfMessageTransformUtil.NETCONF_DATA_NODEID)
279 .withValue(new DOMSource(xmlData)).build();
280 normalizedNode = Builders.containerBuilder().withNodeIdentifier(
281 new YangInstanceIdentifier.NodeIdentifier(NetconfMessageTransformUtil.NETCONF_RPC_REPLY_QNAME))
282 .withChild(anyXmlNode).build();
285 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
287 // Determine whether a base netconf operation is being invoked
288 // and also check if the device exposed model for base netconf.
289 // If no, use pre built base netconf operations model
290 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
291 if (needToUseBaseCtx) {
292 currentMappedRpcs = baseSchema.getMappedRpcs();
295 final RpcDefinition rpcDefinition = currentMappedRpcs.get(rpcQName);
296 Preconditions.checkArgument(rpcDefinition != null,
297 "Unable to parse response of %s, the rpc is unknown", rpcQName);
299 // In case no input for rpc is defined, we can simply construct the payload here
300 normalizedNode = parseResult(message, rpcDefinition);
302 return new DefaultDOMRpcResult(normalizedNode);
306 public DOMActionResult toActionResult(final SchemaPath action, final NetconfMessage message) {
307 ActionDefinition actionDefinition = null;
308 for (ActionDefinition actionDef : actions) {
309 if (actionDef.getPath().getLastComponent().equals(action.getLastComponent())) {
310 actionDefinition = actionDef;
313 Preconditions.checkNotNull(actionDefinition, "Action does not exist: %s", action);
314 final ContainerNode normalizedNode = (ContainerNode) parseResult(message, actionDefinition);
316 if (normalizedNode == null) {
317 return new SimpleDOMActionResult(Collections.<RpcError>emptyList());
319 return new SimpleDOMActionResult(normalizedNode, Collections.<RpcError>emptyList());
323 private NormalizedNode<?, ?> parseResult(final NetconfMessage message,
324 final OperationDefinition operationDefinition) {
325 if (operationDefinition.getOutput().getChildNodes().isEmpty()) {
326 Preconditions.checkArgument(XmlElement.fromDomDocument(
327 message.getDocument()).getOnlyChildElementWithSameNamespaceOptionally("ok").isPresent(),
328 "Unexpected content in response of rpc: %s, %s", operationDefinition.getQName(), message);
331 final Element element = message.getDocument().getDocumentElement();
333 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
334 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
335 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
336 operationDefinition.getOutput(), strictParsing);
337 xmlParser.traverse(new DOMSource(element));
338 return resultHolder.getResult();
339 } catch (XMLStreamException | URISyntaxException | IOException | SAXException e) {
340 throw new IllegalArgumentException(String.format("Failed to parse RPC response %s", element), e);
345 static class NetconfDeviceNotification implements DOMNotification, DOMEvent {
346 private final ContainerNode content;
347 private final SchemaPath schemaPath;
348 private final Instant eventTime;
350 NetconfDeviceNotification(final ContainerNode content, final Instant eventTime) {
351 this.content = content;
352 this.eventTime = eventTime;
353 this.schemaPath = toPath(content.getNodeType());
357 public SchemaPath getType() {
362 public ContainerNode getBody() {
367 public Instant getEventInstant() {