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_RPC_QNAME;
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.base.Function;
16 import com.google.common.base.Preconditions;
17 import com.google.common.collect.Lists;
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.util.Collection;
23 import java.util.Collections;
24 import java.util.Comparator;
25 import java.util.Date;
26 import java.util.List;
28 import javax.annotation.Nonnull;
29 import javax.xml.stream.XMLStreamException;
30 import javax.xml.stream.XMLStreamWriter;
31 import javax.xml.transform.dom.DOMResult;
32 import org.opendaylight.controller.config.util.xml.MissingNameSpaceException;
33 import org.opendaylight.controller.config.util.xml.XmlElement;
34 import org.opendaylight.controller.config.util.xml.XmlUtil;
35 import org.opendaylight.controller.md.sal.dom.api.DOMEvent;
36 import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
37 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
38 import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
39 import org.opendaylight.netconf.api.NetconfMessage;
40 import org.opendaylight.netconf.sal.connect.api.MessageTransformer;
41 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil;
42 import org.opendaylight.netconf.sal.connect.util.MessageCounter;
43 import org.opendaylight.netconf.util.NetconfUtil;
44 import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleInfoBackedContext;
45 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
46 import org.opendaylight.yangtools.yang.common.QName;
47 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
48 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
49 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
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.impl.codec.xml.XMLStreamNormalizedNodeStreamWriter;
53 import org.opendaylight.yangtools.yang.data.impl.codec.xml.XmlUtils;
54 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
55 import org.opendaylight.yangtools.yang.data.impl.schema.SchemaOrderedNormalizedNodeWriter;
56 import org.opendaylight.yangtools.yang.data.impl.schema.transform.dom.parser.DomToNormalizedNodeParserFactory;
57 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
58 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
59 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
60 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
61 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
62 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
63 import org.slf4j.Logger;
64 import org.slf4j.LoggerFactory;
65 import org.w3c.dom.Document;
66 import org.w3c.dom.Element;
68 public class NetconfMessageTransformer implements MessageTransformer<NetconfMessage> {
70 public enum BaseSchema {
74 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.$YangModuleInfoImpl.getInstance(),
75 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.extension.rev131210.$YangModuleInfoImpl.getInstance()
78 BASE_NETCONF_CTX_WITH_NOTIFICATIONS(
80 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.monitoring.extension.rev131210.$YangModuleInfoImpl.getInstance(),
81 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.notification._1._0.rev080714.$YangModuleInfoImpl.getInstance(),
82 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.netconf.base._1._0.rev110601.$YangModuleInfoImpl.getInstance(),
83 org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.netconf.notifications.rev120206.$YangModuleInfoImpl.getInstance()
87 private final Map<QName, RpcDefinition> mappedRpcs;
88 private final SchemaContext schemaContext;
90 BaseSchema(List<YangModuleInfo> modules) {
92 final ModuleInfoBackedContext moduleInfoBackedContext = ModuleInfoBackedContext.create();
93 moduleInfoBackedContext.addModuleInfos(modules);
94 schemaContext = moduleInfoBackedContext.tryToCreateSchemaContext().get();
95 mappedRpcs = Maps.uniqueIndex(schemaContext.getOperations(), QNAME_FUNCTION);
96 } catch (final RuntimeException e) {
97 LOG.error("Unable to prepare schema context for base netconf ops", e);
98 throw new ExceptionInInitializerError(e);
102 private Map<QName, RpcDefinition> getMappedRpcs() {
106 public SchemaContext getSchemaContext() {
107 return schemaContext;
111 public static final String MESSAGE_ID_PREFIX = "m";
113 private static final Logger LOG= LoggerFactory.getLogger(NetconfMessageTransformer.class);
116 private static final Function<SchemaNode, QName> QNAME_FUNCTION = new Function<SchemaNode, QName>() {
118 public QName apply(final SchemaNode rpcDefinition) {
119 return rpcDefinition.getQName();
123 private static final Function<SchemaNode, QName> QNAME_NOREV_FUNCTION = new Function<SchemaNode, QName>() {
125 public QName apply(final SchemaNode notification) {
126 return QNAME_FUNCTION.apply(notification).withoutRevision();
130 private final SchemaContext schemaContext;
131 private final BaseSchema baseSchema;
132 private final MessageCounter counter;
133 private final Map<QName, RpcDefinition> mappedRpcs;
134 private final Multimap<QName, NotificationDefinition> mappedNotifications;
135 private final DomToNormalizedNodeParserFactory parserFactory;
137 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing) {
138 this(schemaContext, strictParsing, BaseSchema.BASE_NETCONF_CTX);
141 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing, final BaseSchema baseSchema) {
142 this.counter = new MessageCounter();
143 this.schemaContext = schemaContext;
144 parserFactory = DomToNormalizedNodeParserFactory.getInstance(XmlUtils.DEFAULT_XML_CODEC_PROVIDER, schemaContext, strictParsing);
145 mappedRpcs = Maps.uniqueIndex(schemaContext.getOperations(), QNAME_FUNCTION);
146 mappedNotifications = Multimaps.index(schemaContext.getNotifications(), QNAME_NOREV_FUNCTION);
147 this.baseSchema = baseSchema;
151 public synchronized DOMNotification toNotification(final NetconfMessage message) {
152 final Map.Entry<Date, XmlElement> stripped = NetconfMessageTransformUtil.stripNotification(message);
153 final QName notificationNoRev;
155 notificationNoRev = QName.create(stripped.getValue().getNamespace(), stripped.getValue().getName()).withoutRevision();
156 } catch (final MissingNameSpaceException e) {
157 throw new IllegalArgumentException("Unable to parse notification " + message + ", cannot find namespace", e);
159 final Collection<NotificationDefinition> notificationDefinitions = mappedNotifications.get(notificationNoRev);
160 Preconditions.checkArgument(notificationDefinitions.size() > 0,
161 "Unable to parse notification %s, unknown notification. Available notifications: %s", notificationDefinitions, mappedNotifications.keySet());
163 final NotificationDefinition mostRecentNotification = getMostRecentNotification(notificationDefinitions);
165 final ContainerSchemaNode notificationAsContainerSchemaNode = NetconfMessageTransformUtil.createSchemaForNotification(mostRecentNotification);
167 final Element element = stripped.getValue().getDomElement();
168 final ContainerNode content;
170 content = parserFactory.getContainerNodeParser().parse(Collections.singleton(element),
171 notificationAsContainerSchemaNode);
172 } catch (IllegalArgumentException e) {
173 throw new IllegalArgumentException(String.format("Failed to parse notification %s", element), e);
175 return new NetconfDeviceNotification(content, stripped.getKey());
178 private static NotificationDefinition getMostRecentNotification(final Collection<NotificationDefinition> notificationDefinitions) {
179 Comparator<NotificationDefinition> cmp = (o1, o2) -> o1.getQName().getRevision().compareTo(o2.getQName().getRevision());
181 return Collections.max(notificationDefinitions, cmp);
185 public NetconfMessage toRpcRequest(SchemaPath rpc, final NormalizedNode<?, ?> payload) {
186 // In case no input for rpc is defined, we can simply construct the payload here
187 final QName rpcQName = rpc.getLastComponent();
188 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
190 // Determine whether a base netconf operation is being invoked and also check if the device exposed model for base netconf
191 // If no, use pre built base netconf operations model
192 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
193 if(needToUseBaseCtx) {
194 currentMappedRpcs = baseSchema.getMappedRpcs();
197 Preconditions.checkNotNull(currentMappedRpcs.get(rpcQName), "Unknown rpc %s, available rpcs: %s", rpcQName, currentMappedRpcs.keySet());
198 if(currentMappedRpcs.get(rpcQName).getInput() == null) {
199 return new NetconfMessage(prepareDomResultForRpcRequest(rpcQName).getNode().getOwnerDocument());
202 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);
206 // Set the path to the input of rpc for the node stream writer
207 rpc = rpc.createChild(QName.create(rpcQName, "input").intern());
208 final DOMResult result = prepareDomResultForRpcRequest(rpcQName);
211 // If the schema context for netconf device does not contain model for base netconf operations, 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 SchemaContext ctx = needToUseBaseCtx ? baseSchema.getSchemaContext() : schemaContext;
214 writeNormalizedRpc(((ContainerNode) payload), result, rpc, ctx);
215 } catch (final XMLStreamException | IOException | IllegalStateException e) {
216 throw new IllegalStateException("Unable to serialize " + rpc, e);
219 final Document node = result.getNode().getOwnerDocument();
221 return new NetconfMessage(node);
224 private boolean isBaseOrNotificationRpc(final QName rpc) {
225 return rpc.getNamespace().equals(NETCONF_URI) ||
226 rpc.getNamespace().equals(IETF_NETCONF_NOTIFICATIONS.getNamespace()) ||
227 rpc.getNamespace().equals(NetconfMessageTransformUtil.CREATE_SUBSCRIPTION_RPC_QNAME.getNamespace());
230 private DOMResult prepareDomResultForRpcRequest(final QName rpcQName) {
231 final Document document = XmlUtil.newDocument();
232 final Element rpcNS = document.createElementNS(NETCONF_RPC_QNAME.getNamespace().toString(), NETCONF_RPC_QNAME.getLocalName());
234 rpcNS.setAttribute(NetconfMessageTransformUtil.MESSAGE_ID_ATTR, counter.getNewMessageId(MESSAGE_ID_PREFIX));
235 final Element elementNS = document.createElementNS(rpcQName.getNamespace().toString(), rpcQName.getLocalName());
236 rpcNS.appendChild(elementNS);
237 document.appendChild(rpcNS);
238 return new DOMResult(elementNS);
241 private static void writeNormalizedRpc(final ContainerNode normalized, final DOMResult result,
242 final SchemaPath schemaPath, final SchemaContext baseNetconfCtx) throws IOException, XMLStreamException {
243 final XMLStreamWriter writer = NetconfUtil.XML_FACTORY.createXMLStreamWriter(result);
245 try (final NormalizedNodeStreamWriter normalizedNodeStreamWriter =
246 XMLStreamNormalizedNodeStreamWriter.create(writer, baseNetconfCtx, schemaPath)) {
247 try (final SchemaOrderedNormalizedNodeWriter normalizedNodeWriter =
248 new SchemaOrderedNormalizedNodeWriter(normalizedNodeStreamWriter, baseNetconfCtx, schemaPath)) {
249 Collection<DataContainerChild<?, ?>> value = normalized.getValue();
250 normalizedNodeWriter.write(value);
251 normalizedNodeWriter.flush();
257 } catch (final Exception e) {
258 LOG.warn("Unable to close resource properly", e);
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 = NetconfMessageTransformUtil.createSchemaForDataRead(schemaContext);
270 final ContainerNode dataNode;
273 dataNode = parserFactory.getContainerNodeParser().parse(Collections.singleton(xmlData), schemaForDataRead);
274 } catch (IllegalArgumentException e) {
275 throw new IllegalArgumentException(String.format("Failed to parse data response %s", xmlData), e);
278 normalizedNode = Builders.containerBuilder().withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(NetconfMessageTransformUtil.NETCONF_RPC_REPLY_QNAME))
279 .withChild(dataNode).build();
282 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
284 // Determine whether a base netconf operation is being invoked and also check if the device exposed model for base netconf
285 // If no, use pre built base netconf operations model
286 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
287 if(needToUseBaseCtx) {
288 currentMappedRpcs = baseSchema.getMappedRpcs();
291 final RpcDefinition rpcDefinition = currentMappedRpcs.get(rpcQName);
292 Preconditions.checkArgument(rpcDefinition != null, "Unable to parse response of %s, the rpc is unknown", rpcQName);
294 // In case no input for rpc is defined, we can simply construct the payload here
295 if (rpcDefinition.getOutput() == null) {
296 Preconditions.checkArgument(XmlElement.fromDomDocument(
297 message.getDocument()).getOnlyChildElementWithSameNamespaceOptionally("ok").isPresent(),
298 "Unexpected content in response of rpc: %s, %s", rpcDefinition.getQName(), message);
299 normalizedNode = null;
301 final Element element = message.getDocument().getDocumentElement();
303 normalizedNode = parserFactory.getContainerNodeParser().parse(Collections.singleton(element),
304 rpcDefinition.getOutput());
305 } catch (IllegalArgumentException e) {
306 throw new IllegalArgumentException(String.format("Failed to parse RPC response %s", element), e);
310 return new DefaultDOMRpcResult(normalizedNode);
313 private static class NetconfDeviceNotification implements DOMNotification, DOMEvent {
314 private final ContainerNode content;
315 private final SchemaPath schemaPath;
316 private final Date eventTime;
318 NetconfDeviceNotification(final ContainerNode content, final Date eventTime) {
319 this.content = content;
320 this.eventTime = eventTime;
321 this.schemaPath = toPath(content.getNodeType());
326 public SchemaPath getType() {
333 public ContainerNode getBody() {
338 public Date getEventTime() {