2 * Copyright (c) 2016 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.restconf.nb.rfc8040.utils.parser;
10 import static com.google.common.base.Preconditions.checkState;
12 import com.google.common.annotations.VisibleForTesting;
13 import com.google.common.base.Splitter;
14 import com.google.common.collect.Iterables;
15 import java.time.format.DateTimeParseException;
16 import java.util.AbstractMap.SimpleImmutableEntry;
17 import java.util.Date;
18 import java.util.Iterator;
19 import java.util.List;
20 import java.util.Locale;
21 import java.util.Map.Entry;
22 import java.util.Optional;
23 import org.eclipse.jdt.annotation.Nullable;
24 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
25 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
26 import org.opendaylight.mdsal.dom.api.DOMSchemaService;
27 import org.opendaylight.mdsal.dom.api.DOMYangTextSourceProvider;
28 import org.opendaylight.restconf.common.ErrorTags;
29 import org.opendaylight.restconf.common.context.InstanceIdentifierContext;
30 import org.opendaylight.restconf.common.errors.RestconfDocumentedException;
31 import org.opendaylight.restconf.nb.rfc8040.rests.services.api.SchemaExportContext;
32 import org.opendaylight.restconf.nb.rfc8040.utils.RestconfConstants;
33 import org.opendaylight.yangtools.yang.common.ErrorTag;
34 import org.opendaylight.yangtools.yang.common.ErrorType;
35 import org.opendaylight.yangtools.yang.common.QName;
36 import org.opendaylight.yangtools.yang.common.Revision;
37 import org.opendaylight.yangtools.yang.common.YangNames;
38 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
39 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
40 import org.opendaylight.yangtools.yang.model.api.Module;
41 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * Util class for parsing identifier.
48 public final class ParserIdentifier {
49 private static final Logger LOG = LoggerFactory.getLogger(ParserIdentifier.class);
50 private static final Splitter MP_SPLITTER = Splitter.on("/" + RestconfConstants.MOUNT);
52 private ParserIdentifier() {
57 * Make {@link InstanceIdentifierContext} from {@link String} identifier
59 * For identifiers of data NOT behind mount points returned
60 * {@link InstanceIdentifierContext} is prepared with {@code null} reference of {@link DOMMountPoint} and with
61 * controller's {@link SchemaContext}.
63 * For identifiers of data behind mount points returned
64 * {@link InstanceIdentifierContext} is prepared with reference of {@link DOMMountPoint} and its
65 * own {@link SchemaContext}.
69 * @param schemaContext
70 * - controller schema context
71 * @param mountPointService
72 * - mount point service
73 * @return {@link InstanceIdentifierContext}
75 // FIXME: NETCONF-631: this method should not be here, it should be a static factory in InstanceIdentifierContext:
77 // @NonNull InstanceIdentifierContext forUrl(identifier, schemaContexxt, mountPointService)
79 public static InstanceIdentifierContext toInstanceIdentifier(final String identifier,
80 final EffectiveModelContext schemaContext, final Optional<DOMMountPointService> mountPointService) {
81 if (identifier == null || !identifier.contains(RestconfConstants.MOUNT)) {
82 return createIIdContext(schemaContext, identifier, null);
84 if (mountPointService.isEmpty()) {
85 throw new RestconfDocumentedException("Mount point service is not available");
88 final Iterator<String> pathsIt = MP_SPLITTER.split(identifier).iterator();
89 final String mountPointId = pathsIt.next();
90 final YangInstanceIdentifier mountPath = IdentifierCodec.deserialize(mountPointId, schemaContext);
91 final DOMMountPoint mountPoint = mountPointService.get().getMountPoint(mountPath)
92 .orElseThrow(() -> new RestconfDocumentedException("Mount point does not exist.",
93 ErrorType.PROTOCOL, ErrorTags.RESOURCE_DENIED_TRANSPORT));
95 final EffectiveModelContext mountSchemaContext = coerceModelContext(mountPoint);
96 final String pathId = pathsIt.next().replaceFirst("/", "");
97 return createIIdContext(mountSchemaContext, pathId, mountPoint);
101 * Method to create {@link InstanceIdentifierContext} from {@link YangInstanceIdentifier}
102 * and {@link SchemaContext}, {@link DOMMountPoint}.
104 * @param url Invocation URL
105 * @param schemaContext SchemaContext in which the path is to be interpreted in
106 * @param mountPoint A mount point handle, if the URL is being interpreted relative to a mount point
107 * @return {@link InstanceIdentifierContext}
108 * @throws RestconfDocumentedException if the path cannot be resolved
110 private static InstanceIdentifierContext createIIdContext(final EffectiveModelContext schemaContext,
111 final String url, final @Nullable DOMMountPoint mountPoint) {
112 // First things first: an empty path means data invocation on SchemaContext
114 return mountPoint != null ? InstanceIdentifierContext.ofMountPointRoot(mountPoint, schemaContext)
115 : InstanceIdentifierContext.ofLocalRoot(schemaContext);
118 final var result = YangInstanceIdentifierDeserializer.create(schemaContext, url);
119 return InstanceIdentifierContext.ofPath(result.stack, result.node, result.path, mountPoint);
123 * Make a moduleName/Revision pair from identifier.
127 * @return {@link QName}
130 static Entry<String, Revision> makeQNameFromIdentifier(final String identifier) {
131 // check if more than one slash is not used as path separator
132 if (identifier.contains("//")) {
133 LOG.debug("URI has bad format. It should be \'moduleName/yyyy-MM-dd\' {}", identifier);
134 throw new RestconfDocumentedException(
135 "URI has bad format. End of URI should be in format \'moduleName/yyyy-MM-dd\'", ErrorType.PROTOCOL,
136 ErrorTag.INVALID_VALUE);
139 final int mountIndex = identifier.indexOf(RestconfConstants.MOUNT);
140 final String moduleNameAndRevision;
141 if (mountIndex >= 0) {
142 moduleNameAndRevision = identifier.substring(mountIndex + RestconfConstants.MOUNT.length())
143 .replaceFirst("/", "");
145 moduleNameAndRevision = identifier;
148 final List<String> pathArgs = RestconfConstants.SLASH_SPLITTER.splitToList(moduleNameAndRevision);
149 if (pathArgs.size() != 2) {
150 LOG.debug("URI has bad format '{}'. It should be 'moduleName/yyyy-MM-dd'", identifier);
151 throw new RestconfDocumentedException(
152 "URI has bad format. End of URI should be in format \'moduleName/yyyy-MM-dd\'", ErrorType.PROTOCOL,
153 ErrorTag.INVALID_VALUE);
156 final Revision moduleRevision;
158 moduleRevision = Revision.of(pathArgs.get(1));
159 } catch (final DateTimeParseException e) {
160 LOG.debug("URI has bad format: '{}'. It should be 'moduleName/yyyy-MM-dd'", identifier);
161 throw new RestconfDocumentedException("URI has bad format. It should be \'moduleName/yyyy-MM-dd\'",
162 ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE, e);
165 return new SimpleImmutableEntry<>(pathArgs.get(0), moduleRevision);
169 * Parsing {@link Module} module by {@link String} module name and
170 * {@link Date} revision and from the parsed module create
171 * {@link SchemaExportContext}.
173 * @param schemaContext
174 * {@link EffectiveModelContext}
177 * @param domMountPointService
178 * {@link DOMMountPointService}
179 * @return {@link SchemaExportContext}
181 public static SchemaExportContext toSchemaExportContextFromIdentifier(final EffectiveModelContext schemaContext,
182 final String identifier, final DOMMountPointService domMountPointService,
183 final DOMYangTextSourceProvider sourceProvider) {
184 final Iterable<String> pathComponents = RestconfConstants.SLASH_SPLITTER.split(identifier);
185 final Iterator<String> componentIter = pathComponents.iterator();
186 if (!Iterables.contains(pathComponents, RestconfConstants.MOUNT)) {
187 final String moduleName = validateAndGetModulName(componentIter);
188 final Revision revision = validateAndGetRevision(componentIter);
189 final Module module = coerceModule(schemaContext, moduleName, revision, null);
190 return new SchemaExportContext(schemaContext, module, sourceProvider);
192 final StringBuilder pathBuilder = new StringBuilder();
193 while (componentIter.hasNext()) {
194 final String current = componentIter.next();
196 if (RestconfConstants.MOUNT.equals(current)) {
197 pathBuilder.append('/').append(RestconfConstants.MOUNT);
201 if (pathBuilder.length() != 0) {
202 pathBuilder.append('/');
205 pathBuilder.append(current);
207 final InstanceIdentifierContext point = toInstanceIdentifier(pathBuilder.toString(), schemaContext,
208 Optional.of(domMountPointService));
209 final String moduleName = validateAndGetModulName(componentIter);
210 final Revision revision = validateAndGetRevision(componentIter);
211 final EffectiveModelContext context = coerceModelContext(point.getMountPoint());
212 final Module module = coerceModule(context, moduleName, revision, point.getMountPoint());
213 return new SchemaExportContext(context, module, sourceProvider);
218 * Validation and parsing of revision.
220 * @param revisionDate iterator
224 static Revision validateAndGetRevision(final Iterator<String> revisionDate) {
225 RestconfDocumentedException.throwIf(!revisionDate.hasNext(), "Revision date must be supplied.",
226 ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
228 return Revision.of(revisionDate.next());
229 } catch (final DateTimeParseException e) {
230 throw new RestconfDocumentedException("Supplied revision is not in expected date format YYYY-mm-dd", e);
235 * Validation of name.
237 * @param moduleName iterator
238 * @return {@link String}
241 static String validateAndGetModulName(final Iterator<String> moduleName) {
242 RestconfDocumentedException.throwIf(!moduleName.hasNext(), "Module name must be supplied.", ErrorType.PROTOCOL,
243 ErrorTag.INVALID_VALUE);
244 final String name = moduleName.next();
246 RestconfDocumentedException.throwIf(
247 name.isEmpty() || !YangNames.IDENTIFIER_START.matches(name.charAt(0)),
248 "Identifier must start with character from set 'a-zA-Z_", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
249 RestconfDocumentedException.throwIf(name.toUpperCase(Locale.ROOT).startsWith("XML"),
250 "Identifier must NOT start with XML ignore case.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
251 RestconfDocumentedException.throwIf(
252 YangNames.NOT_IDENTIFIER_PART.matchesAnyOf(name.substring(1)),
253 "Supplied name has not expected identifier format.", ErrorType.PROTOCOL, ErrorTag.INVALID_VALUE);
258 private static Module coerceModule(final EffectiveModelContext context, final String moduleName,
259 final Revision revision, final DOMMountPoint mountPoint) {
260 final var module = context.findModule(moduleName, revision);
261 if (module.isEmpty()) {
262 final var msg = "Module %s %s cannot be found on %s.".formatted(moduleName, revision,
263 mountPoint == null ? "controller" : mountPoint.getIdentifier());
264 throw new RestconfDocumentedException(msg, ErrorType.APPLICATION, ErrorTag.DATA_MISSING);
266 return module.orElseThrow();
269 private static EffectiveModelContext coerceModelContext(final DOMMountPoint mountPoint) {
270 final EffectiveModelContext context = modelContext(mountPoint);
271 checkState(context != null, "Mount point %s does not have a model context", mountPoint);
275 private static EffectiveModelContext modelContext(final DOMMountPoint mountPoint) {
276 return mountPoint.getService(DOMSchemaService.class)
277 .flatMap(svc -> Optional.ofNullable(svc.getGlobalContext()))