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.IETF_NETCONF_NOTIFICATIONS;
11 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.NETCONF_URI;
12 import static org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil.toPath;
14 import com.google.common.annotations.VisibleForTesting;
15 import com.google.common.base.Preconditions;
16 import com.google.common.collect.ImmutableSet;
17 import com.google.common.collect.ImmutableSet.Builder;
18 import com.google.common.collect.Maps;
19 import com.google.common.collect.Multimap;
20 import com.google.common.collect.Multimaps;
21 import java.io.IOException;
22 import java.net.URISyntaxException;
23 import java.time.Instant;
24 import java.util.Collection;
25 import java.util.Collections;
28 import javax.xml.parsers.ParserConfigurationException;
29 import javax.xml.stream.XMLStreamException;
30 import javax.xml.transform.dom.DOMResult;
31 import javax.xml.transform.dom.DOMSource;
32 import org.opendaylight.mdsal.dom.api.DOMActionResult;
33 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
34 import org.opendaylight.mdsal.dom.api.DOMEvent;
35 import org.opendaylight.mdsal.dom.api.DOMNotification;
36 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
37 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
38 import org.opendaylight.mdsal.dom.spi.SimpleDOMActionResult;
39 import org.opendaylight.netconf.api.NetconfMessage;
40 import org.opendaylight.netconf.api.xml.MissingNameSpaceException;
41 import org.opendaylight.netconf.api.xml.XmlElement;
42 import org.opendaylight.netconf.sal.connect.api.MessageTransformer;
43 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil;
44 import org.opendaylight.netconf.sal.connect.util.MessageCounter;
45 import org.opendaylight.yangtools.yang.common.QName;
46 import org.opendaylight.yangtools.yang.common.Revision;
47 import org.opendaylight.yangtools.yang.common.RpcError;
48 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
49 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
50 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
51 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
52 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
53 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
54 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
55 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
56 import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
57 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
58 import org.opendaylight.yangtools.yang.model.api.ActionNodeContainer;
59 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
60 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
61 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
62 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
63 import org.opendaylight.yangtools.yang.model.api.OperationDefinition;
64 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
65 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
66 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
67 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
68 import org.slf4j.Logger;
69 import org.slf4j.LoggerFactory;
70 import org.w3c.dom.Document;
71 import org.w3c.dom.Element;
72 import org.xml.sax.SAXException;
74 public class NetconfMessageTransformer implements MessageTransformer<NetconfMessage> {
76 private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageTransformer.class);
78 private final SchemaContext schemaContext;
79 private final BaseSchema baseSchema;
80 private final MessageCounter counter;
81 private final Map<QName, RpcDefinition> mappedRpcs;
82 private final Multimap<QName, NotificationDefinition> mappedNotifications;
83 private final boolean strictParsing;
84 private final Set<ActionDefinition> actions;
86 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing) {
87 this(schemaContext, strictParsing, BaseSchema.BASE_NETCONF_CTX);
90 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing,
91 final BaseSchema baseSchema) {
92 this.counter = new MessageCounter();
93 this.schemaContext = schemaContext;
94 this.mappedRpcs = Maps.uniqueIndex(schemaContext.getOperations(), SchemaNode::getQName);
95 this.actions = getActions();
96 this.mappedNotifications = Multimaps.index(schemaContext.getNotifications(),
97 node -> node.getQName().withoutRevision());
98 this.baseSchema = baseSchema;
99 this.strictParsing = strictParsing;
103 Set<ActionDefinition> getActions() {
104 Builder<ActionDefinition> builder = ImmutableSet.builder();
105 for (DataSchemaNode dataSchemaNode : schemaContext.getChildNodes()) {
106 if (dataSchemaNode instanceof ActionNodeContainer) {
107 findAction(dataSchemaNode, builder);
110 return builder.build();
113 private void findAction(final DataSchemaNode dataSchemaNode, final Builder<ActionDefinition> builder) {
114 if (dataSchemaNode instanceof ActionNodeContainer) {
115 final ActionNodeContainer containerSchemaNode = (ActionNodeContainer) dataSchemaNode;
116 for (ActionDefinition actionDefinition : containerSchemaNode.getActions()) {
117 builder.add(actionDefinition);
120 if (dataSchemaNode instanceof DataNodeContainer) {
121 for (DataSchemaNode innerDataSchemaNode : ((DataNodeContainer) dataSchemaNode).getChildNodes()) {
122 findAction(innerDataSchemaNode, builder);
128 public synchronized DOMNotification toNotification(final NetconfMessage message) {
129 final Map.Entry<Instant, XmlElement> stripped = NetconfMessageTransformUtil.stripNotification(message);
130 final QName notificationNoRev;
132 notificationNoRev = QName.create(
133 stripped.getValue().getNamespace(), stripped.getValue().getName()).withoutRevision();
134 } catch (final MissingNameSpaceException e) {
135 throw new IllegalArgumentException(
136 "Unable to parse notification " + message + ", cannot find namespace", e);
138 final Collection<NotificationDefinition> notificationDefinitions = mappedNotifications.get(notificationNoRev);
139 Preconditions.checkArgument(notificationDefinitions.size() > 0,
140 "Unable to parse notification %s, unknown notification. Available notifications: %s",
141 notificationDefinitions, mappedNotifications.keySet());
143 final NotificationDefinition mostRecentNotification = getMostRecentNotification(notificationDefinitions);
145 final ContainerSchemaNode notificationAsContainerSchemaNode =
146 NetconfMessageTransformUtil.createSchemaForNotification(mostRecentNotification);
148 final Element element = stripped.getValue().getDomElement();
149 final ContainerNode content;
151 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
152 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
153 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
154 notificationAsContainerSchemaNode, strictParsing);
155 xmlParser.traverse(new DOMSource(element));
156 content = (ContainerNode) resultHolder.getResult();
157 } catch (XMLStreamException | URISyntaxException | IOException | ParserConfigurationException
158 | SAXException | UnsupportedOperationException e) {
159 throw new IllegalArgumentException(String.format("Failed to parse notification %s", element), e);
161 return new NetconfDeviceNotification(content, stripped.getKey());
164 private static NotificationDefinition getMostRecentNotification(
165 final Collection<NotificationDefinition> notificationDefinitions) {
166 return Collections.max(notificationDefinitions, (o1, o2) ->
167 Revision.compare(o1.getQName().getRevision(), o2.getQName().getRevision()));
171 public NetconfMessage toRpcRequest(SchemaPath rpc, final NormalizedNode<?, ?> payload) {
172 // In case no input for rpc is defined, we can simply construct the payload here
173 final QName rpcQName = rpc.getLastComponent();
174 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
176 // Determine whether a base netconf operation is being invoked
177 // and also check if the device exposed model for base netconf.
178 // If no, use pre built base netconf operations model
179 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
180 if (needToUseBaseCtx) {
181 currentMappedRpcs = baseSchema.getMappedRpcs();
184 Preconditions.checkNotNull(currentMappedRpcs.get(rpcQName),
185 "Unknown rpc %s, available rpcs: %s", rpcQName, currentMappedRpcs.keySet());
186 if (currentMappedRpcs.get(rpcQName).getInput().getChildNodes().isEmpty()) {
187 return new NetconfMessage(NetconfMessageTransformUtil
188 .prepareDomResultForRpcRequest(rpcQName, counter).getNode().getOwnerDocument());
191 Preconditions.checkNotNull(payload, "Transforming an rpc with input: %s, payload cannot be null", rpcQName);
193 Preconditions.checkArgument(payload instanceof ContainerNode,
194 "Transforming an rpc with input: %s, payload has to be a container, but was: %s", rpcQName, payload);
195 // Set the path to the input of rpc for the node stream writer
196 rpc = rpc.createChild(QName.create(rpcQName, "input").intern());
197 final DOMResult result = NetconfMessageTransformUtil.prepareDomResultForRpcRequest(rpcQName, counter);
200 // If the schema context for netconf device does not contain model for base netconf operations,
201 // use default pre build context with just the base model
202 // This way operations like lock/unlock are supported even if the source for base model was not provided
203 SchemaContext ctx = needToUseBaseCtx ? baseSchema.getSchemaContext() : schemaContext;
204 NetconfMessageTransformUtil.writeNormalizedRpc((ContainerNode) payload, result, rpc, ctx);
205 } catch (final XMLStreamException | IOException | IllegalStateException e) {
206 throw new IllegalStateException("Unable to serialize " + rpc, e);
209 final Document node = result.getNode().getOwnerDocument();
211 return new NetconfMessage(node);
215 public NetconfMessage toActionRequest(SchemaPath action, final DOMDataTreeIdentifier domDataTreeIdentifier,
216 final NormalizedNode<?, ?> payload) {
217 ActionDefinition actionDefinition = null;
218 SchemaPath schemaPath = action;
219 for (ActionDefinition actionDef : actions) {
220 if (actionDef.getPath().getLastComponent().equals(action.getLastComponent())) {
221 actionDefinition = actionDef;
222 schemaPath = actionDef.getPath();
225 Preconditions.checkNotNull(actionDefinition, "Action does not exist: %s", action.getLastComponent());
227 if (actionDefinition.getInput().getChildNodes().isEmpty()) {
228 return new NetconfMessage(NetconfMessageTransformUtil.prepareDomResultForActionRequest(
229 DataSchemaContextTree.from(schemaContext), domDataTreeIdentifier, action, counter,
230 actionDefinition.getQName().getLocalName())
231 .getNode().getOwnerDocument());
234 Preconditions.checkNotNull(payload, "Transforming an action with input: %s, payload cannot be null",
235 action.getLastComponent());
236 Preconditions.checkArgument(payload instanceof ContainerNode,
237 "Transforming an rpc with input: %s, payload has to be a container, but was: %s",
238 action.getLastComponent(), payload);
239 // Set the path to the input of rpc for the node stream writer
240 action = action.createChild(QName.create(action.getLastComponent(), "input").intern());
241 final DOMResult result = NetconfMessageTransformUtil.prepareDomResultForActionRequest(
242 DataSchemaContextTree.from(schemaContext), domDataTreeIdentifier, action, counter,
243 actionDefinition.getQName().getLocalName());
246 NetconfMessageTransformUtil.writeNormalizedRpc((ContainerNode) payload, result,
247 schemaPath.createChild(QName.create(action.getLastComponent(), "input").intern()), schemaContext);
248 } catch (final XMLStreamException | IOException | IllegalStateException e) {
249 throw new IllegalStateException("Unable to serialize " + action, e);
252 final Document node = result.getNode().getOwnerDocument();
254 return new NetconfMessage(node);
257 private static boolean isBaseOrNotificationRpc(final QName rpc) {
258 return rpc.getNamespace().equals(NETCONF_URI)
259 || rpc.getNamespace().equals(IETF_NETCONF_NOTIFICATIONS.getNamespace())
260 || rpc.getNamespace().equals(NetconfMessageTransformUtil.CREATE_SUBSCRIPTION_RPC_QNAME.getNamespace());
264 public synchronized DOMRpcResult toRpcResult(final NetconfMessage message, final SchemaPath rpc) {
265 final NormalizedNode<?, ?> normalizedNode;
266 final QName rpcQName = rpc.getLastComponent();
267 if (NetconfMessageTransformUtil.isDataRetrievalOperation(rpcQName)) {
268 final Element xmlData = NetconfMessageTransformUtil.getDataSubtree(message.getDocument());
269 final ContainerSchemaNode schemaForDataRead =
270 NetconfMessageTransformUtil.createSchemaForDataRead(schemaContext);
271 final ContainerNode dataNode;
274 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
275 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
276 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext, schemaForDataRead,
278 xmlParser.traverse(new DOMSource(xmlData));
279 dataNode = (ContainerNode) resultHolder.getResult();
280 } catch (XMLStreamException | URISyntaxException | IOException | ParserConfigurationException
282 throw new IllegalArgumentException(String.format("Failed to parse data response %s", xmlData), e);
285 normalizedNode = Builders.containerBuilder()
286 .withNodeIdentifier(new YangInstanceIdentifier
287 .NodeIdentifier(NetconfMessageTransformUtil.NETCONF_RPC_REPLY_QNAME))
288 .withChild(dataNode).build();
291 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
293 // Determine whether a base netconf operation is being invoked
294 // and also check if the device exposed model for base netconf.
295 // If no, use pre built base netconf operations model
296 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
297 if (needToUseBaseCtx) {
298 currentMappedRpcs = baseSchema.getMappedRpcs();
301 final RpcDefinition rpcDefinition = currentMappedRpcs.get(rpcQName);
302 Preconditions.checkArgument(rpcDefinition != null,
303 "Unable to parse response of %s, the rpc is unknown", rpcQName);
305 // In case no input for rpc is defined, we can simply construct the payload here
306 normalizedNode = parseResult(message, rpcDefinition);
308 return new DefaultDOMRpcResult(normalizedNode);
312 public DOMActionResult toActionResult(final SchemaPath action, final NetconfMessage message) {
313 ActionDefinition actionDefinition = null;
314 for (ActionDefinition actionDef : actions) {
315 if (actionDef.getPath().getLastComponent().equals(action.getLastComponent())) {
316 actionDefinition = actionDef;
319 Preconditions.checkNotNull(actionDefinition, "Action does not exist: %s", action);
320 ContainerNode normalizedNode = (ContainerNode) parseResult(message, actionDefinition);
322 if (normalizedNode == null) {
323 return new SimpleDOMActionResult(Collections.<RpcError>emptyList());
325 return new SimpleDOMActionResult(normalizedNode, Collections.<RpcError>emptyList());
329 private NormalizedNode<?, ?> parseResult(final NetconfMessage message,
330 final OperationDefinition operationDefinition) {
331 if (operationDefinition.getOutput().getChildNodes().isEmpty()) {
332 Preconditions.checkArgument(XmlElement.fromDomDocument(
333 message.getDocument()).getOnlyChildElementWithSameNamespaceOptionally("ok").isPresent(),
334 "Unexpected content in response of rpc: %s, %s", operationDefinition.getQName(), message);
337 final Element element = message.getDocument().getDocumentElement();
339 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
340 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
341 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
342 operationDefinition.getOutput(), strictParsing);
343 xmlParser.traverse(new DOMSource(element));
344 return resultHolder.getResult();
345 } catch (XMLStreamException | URISyntaxException | IOException | ParserConfigurationException
347 throw new IllegalArgumentException(String.format("Failed to parse RPC response %s", element), e);
352 static class NetconfDeviceNotification implements DOMNotification, DOMEvent {
353 private final ContainerNode content;
354 private final SchemaPath schemaPath;
355 private final Instant eventTime;
357 NetconfDeviceNotification(final ContainerNode content, final Instant eventTime) {
358 this.content = content;
359 this.eventTime = eventTime;
360 this.schemaPath = toPath(content.getNodeType());
364 public SchemaPath getType() {
369 public ContainerNode getBody() {
374 public Instant getEventInstant() {