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.base.Preconditions;
15 import com.google.common.collect.Maps;
16 import com.google.common.collect.Multimap;
17 import com.google.common.collect.Multimaps;
18 import java.io.IOException;
19 import java.util.Collection;
20 import java.util.Collections;
21 import java.util.Comparator;
22 import java.util.Date;
24 import javax.annotation.Nonnull;
25 import javax.xml.stream.XMLStreamException;
26 import javax.xml.transform.dom.DOMResult;
27 import javax.xml.transform.dom.DOMSource;
28 import org.opendaylight.controller.config.util.xml.MissingNameSpaceException;
29 import org.opendaylight.controller.config.util.xml.XmlElement;
30 import org.opendaylight.controller.md.sal.dom.api.DOMEvent;
31 import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
32 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
33 import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
34 import org.opendaylight.netconf.api.NetconfMessage;
35 import org.opendaylight.netconf.sal.connect.api.MessageTransformer;
36 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil;
37 import org.opendaylight.netconf.sal.connect.util.MessageCounter;
38 import org.opendaylight.yangtools.yang.common.QName;
39 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
40 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
41 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
42 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
43 import org.opendaylight.yangtools.yang.data.codec.xml.XmlParserStream;
44 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
45 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
46 import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
47 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
48 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
49 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
50 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
51 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
52 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
53 import org.slf4j.Logger;
54 import org.slf4j.LoggerFactory;
55 import org.w3c.dom.Document;
56 import org.w3c.dom.Element;
58 public class NetconfMessageTransformer implements MessageTransformer<NetconfMessage> {
60 private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageTransformer.class);
62 private final SchemaContext schemaContext;
63 private final BaseSchema baseSchema;
64 private final MessageCounter counter;
65 private final Map<QName, RpcDefinition> mappedRpcs;
66 private final Multimap<QName, NotificationDefinition> mappedNotifications;
68 private final boolean strictParsing;
70 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing) {
71 this(schemaContext, strictParsing, BaseSchema.BASE_NETCONF_CTX);
74 public NetconfMessageTransformer(final SchemaContext schemaContext, final boolean strictParsing,
75 final BaseSchema baseSchema) {
76 this.counter = new MessageCounter();
77 this.schemaContext = schemaContext;
78 mappedRpcs = Maps.uniqueIndex(schemaContext.getOperations(), SchemaNode::getQName);
79 mappedNotifications = Multimaps.index(schemaContext.getNotifications(),
80 node -> node.getQName().withoutRevision());
81 this.baseSchema = baseSchema;
82 this.strictParsing = strictParsing;
85 @SuppressWarnings("checkstyle:IllegalCatch")
87 public synchronized DOMNotification toNotification(final NetconfMessage message) {
88 final Map.Entry<Date, XmlElement> stripped = NetconfMessageTransformUtil.stripNotification(message);
89 final QName notificationNoRev;
91 notificationNoRev = QName.create(
92 stripped.getValue().getNamespace(), stripped.getValue().getName()).withoutRevision();
93 } catch (final MissingNameSpaceException e) {
94 throw new IllegalArgumentException(
95 "Unable to parse notification " + message + ", cannot find namespace", e);
97 final Collection<NotificationDefinition> notificationDefinitions = mappedNotifications.get(notificationNoRev);
98 Preconditions.checkArgument(notificationDefinitions.size() > 0,
99 "Unable to parse notification %s, unknown notification. Available notifications: %s",
100 notificationDefinitions, mappedNotifications.keySet());
102 final NotificationDefinition mostRecentNotification = getMostRecentNotification(notificationDefinitions);
104 final ContainerSchemaNode notificationAsContainerSchemaNode =
105 NetconfMessageTransformUtil.createSchemaForNotification(mostRecentNotification);
107 final Element element = stripped.getValue().getDomElement();
108 final ContainerNode content;
110 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
111 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
112 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
113 notificationAsContainerSchemaNode, strictParsing);
114 xmlParser.traverse(new DOMSource(element));
115 content = (ContainerNode) resultHolder.getResult();
116 } catch (final Exception e) {
117 throw new IllegalArgumentException(String.format("Failed to parse notification %s", element), e);
119 return new NetconfDeviceNotification(content, stripped.getKey());
122 private static NotificationDefinition getMostRecentNotification(
123 final Collection<NotificationDefinition> notificationDefinitions) {
124 Comparator<NotificationDefinition> cmp = (o1, o2) ->
125 o1.getQName().getRevision().compareTo(o2.getQName().getRevision());
127 return Collections.max(notificationDefinitions, cmp);
131 public NetconfMessage toRpcRequest(SchemaPath rpc, final NormalizedNode<?, ?> payload) {
132 // In case no input for rpc is defined, we can simply construct the payload here
133 final QName rpcQName = rpc.getLastComponent();
134 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
136 // Determine whether a base netconf operation is being invoked
137 // and also check if the device exposed model for base netconf.
138 // If no, use pre built base netconf operations model
139 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
140 if (needToUseBaseCtx) {
141 currentMappedRpcs = baseSchema.getMappedRpcs();
144 Preconditions.checkNotNull(currentMappedRpcs.get(rpcQName),
145 "Unknown rpc %s, available rpcs: %s", rpcQName, currentMappedRpcs.keySet());
146 if (currentMappedRpcs.get(rpcQName).getInput().getChildNodes().isEmpty()) {
147 return new NetconfMessage(NetconfMessageTransformUtil
148 .prepareDomResultForRpcRequest(rpcQName, counter).getNode().getOwnerDocument());
151 Preconditions.checkNotNull(payload, "Transforming an rpc with input: %s, payload cannot be null", rpcQName);
152 Preconditions.checkArgument(payload instanceof ContainerNode,
153 "Transforming an rpc with input: %s, payload has to be a container, but was: %s", rpcQName, payload);
155 // Set the path to the input of rpc for the node stream writer
156 rpc = rpc.createChild(QName.create(rpcQName, "input").intern());
157 final DOMResult result = NetconfMessageTransformUtil.prepareDomResultForRpcRequest(rpcQName, counter);
160 // If the schema context for netconf device does not contain model for base netconf operations,
161 // use default pre build context with just the base model
162 // This way operations like lock/unlock are supported even if the source for base model was not provided
163 SchemaContext ctx = needToUseBaseCtx ? baseSchema.getSchemaContext() : schemaContext;
164 NetconfMessageTransformUtil.writeNormalizedRpc((ContainerNode) payload, result, rpc, ctx);
165 } catch (final XMLStreamException | IOException | IllegalStateException e) {
166 throw new IllegalStateException("Unable to serialize " + rpc, e);
169 final Document node = result.getNode().getOwnerDocument();
171 return new NetconfMessage(node);
174 private static boolean isBaseOrNotificationRpc(final QName rpc) {
175 return rpc.getNamespace().equals(NETCONF_URI)
176 || rpc.getNamespace().equals(IETF_NETCONF_NOTIFICATIONS.getNamespace())
177 || rpc.getNamespace().equals(NetconfMessageTransformUtil.CREATE_SUBSCRIPTION_RPC_QNAME.getNamespace());
180 @SuppressWarnings("checkstyle:IllegalCatch")
182 public synchronized DOMRpcResult toRpcResult(final NetconfMessage message, final SchemaPath rpc) {
183 final NormalizedNode<?, ?> normalizedNode;
184 final QName rpcQName = rpc.getLastComponent();
185 if (NetconfMessageTransformUtil.isDataRetrievalOperation(rpcQName)) {
186 final Element xmlData = NetconfMessageTransformUtil.getDataSubtree(message.getDocument());
187 final ContainerSchemaNode schemaForDataRead =
188 NetconfMessageTransformUtil.createSchemaForDataRead(schemaContext);
189 final ContainerNode dataNode;
192 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
193 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
194 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext, schemaForDataRead,
196 xmlParser.traverse(new DOMSource(xmlData));
197 dataNode = (ContainerNode) resultHolder.getResult();
198 } catch (final Exception e) {
199 throw new IllegalArgumentException(String.format("Failed to parse data response %s", xmlData), e);
202 normalizedNode = Builders.containerBuilder()
203 .withNodeIdentifier(new YangInstanceIdentifier
204 .NodeIdentifier(NetconfMessageTransformUtil.NETCONF_RPC_REPLY_QNAME))
205 .withChild(dataNode).build();
208 Map<QName, RpcDefinition> currentMappedRpcs = mappedRpcs;
210 // Determine whether a base netconf operation is being invoked
211 // and also check if the device exposed model for base netconf.
212 // If no, use pre built base netconf operations model
213 final boolean needToUseBaseCtx = mappedRpcs.get(rpcQName) == null && isBaseOrNotificationRpc(rpcQName);
214 if (needToUseBaseCtx) {
215 currentMappedRpcs = baseSchema.getMappedRpcs();
218 final RpcDefinition rpcDefinition = currentMappedRpcs.get(rpcQName);
219 Preconditions.checkArgument(rpcDefinition != null,
220 "Unable to parse response of %s, the rpc is unknown", rpcQName);
222 // In case no input for rpc is defined, we can simply construct the payload here
223 if (rpcDefinition.getOutput().getChildNodes().isEmpty()) {
224 Preconditions.checkArgument(XmlElement.fromDomDocument(
225 message.getDocument()).getOnlyChildElementWithSameNamespaceOptionally("ok").isPresent(),
226 "Unexpected content in response of rpc: %s, %s", rpcDefinition.getQName(), message);
227 normalizedNode = null;
229 final Element element = message.getDocument().getDocumentElement();
231 final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
232 final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(resultHolder);
233 final XmlParserStream xmlParser = XmlParserStream.create(writer, schemaContext,
234 rpcDefinition.getOutput(), strictParsing);
235 xmlParser.traverse(new DOMSource(element));
236 normalizedNode = resultHolder.getResult();
237 } catch (final Exception e) {
238 throw new IllegalArgumentException(String.format("Failed to parse RPC response %s", element), e);
242 return new DefaultDOMRpcResult(normalizedNode);
245 static class NetconfDeviceNotification implements DOMNotification, DOMEvent {
246 private final ContainerNode content;
247 private final SchemaPath schemaPath;
248 private final Date eventTime;
250 NetconfDeviceNotification(final ContainerNode content, final Date eventTime) {
251 this.content = content;
252 this.eventTime = eventTime;
253 this.schemaPath = toPath(content.getNodeType());
258 public SchemaPath getType() {
265 public ContainerNode getBody() {
270 public Date getEventTime() {