2 * Copyright (c) 2015 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.yangtools.yang.parser.stmt.reactor;
10 import static com.google.common.base.Preconditions.checkState;
11 import static com.google.common.base.Verify.verify;
12 import static com.google.common.base.Verify.verifyNotNull;
13 import static java.util.Objects.requireNonNull;
15 import com.google.common.base.Verify;
16 import com.google.common.collect.HashBasedTable;
17 import com.google.common.collect.ImmutableMap;
18 import com.google.common.collect.ImmutableSet;
19 import com.google.common.collect.ImmutableSetMultimap;
20 import com.google.common.collect.SetMultimap;
21 import com.google.common.collect.Table;
22 import com.google.common.collect.TreeBasedTable;
23 import java.util.ArrayList;
24 import java.util.Collection;
25 import java.util.HashMap;
26 import java.util.HashSet;
27 import java.util.Iterator;
28 import java.util.List;
30 import java.util.Objects;
31 import java.util.Optional;
33 import java.util.SortedMap;
34 import org.eclipse.jdt.annotation.NonNull;
35 import org.opendaylight.yangtools.yang.common.Empty;
36 import org.opendaylight.yangtools.yang.common.QName;
37 import org.opendaylight.yangtools.yang.common.QNameModule;
38 import org.opendaylight.yangtools.yang.common.Revision;
39 import org.opendaylight.yangtools.yang.common.UnresolvedQName.Unqualified;
40 import org.opendaylight.yangtools.yang.common.YangVersion;
41 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
42 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
43 import org.opendaylight.yangtools.yang.model.repo.api.FeatureSet;
44 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
45 import org.opendaylight.yangtools.yang.parser.spi.ParserNamespaces;
46 import org.opendaylight.yangtools.yang.parser.spi.meta.DerivedNamespaceBehaviour;
47 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
48 import org.opendaylight.yangtools.yang.parser.spi.meta.MutableStatement;
49 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour;
50 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.NamespaceStorageNode;
51 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
52 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.StorageNodeType;
53 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceNotAvailableException;
54 import org.opendaylight.yangtools.yang.parser.spi.meta.ParserNamespace;
55 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
56 import org.opendaylight.yangtools.yang.parser.spi.meta.SomeModifiersUnresolvedException;
57 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupportBundle;
58 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
59 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
60 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
61 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
62 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundles;
63 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundles.ValidationBundleType;
64 import org.opendaylight.yangtools.yang.parser.stmt.reactor.SourceSpecificContext.PhaseCompletionProgress;
65 import org.slf4j.Logger;
66 import org.slf4j.LoggerFactory;
68 final class BuildGlobalContext extends NamespaceStorageSupport implements Registry {
69 private static final Logger LOG = LoggerFactory.getLogger(BuildGlobalContext.class);
71 private static final ModelProcessingPhase[] PHASE_EXECUTION_ORDER = {
72 ModelProcessingPhase.SOURCE_PRE_LINKAGE,
73 ModelProcessingPhase.SOURCE_LINKAGE,
74 ModelProcessingPhase.STATEMENT_DEFINITION,
75 ModelProcessingPhase.FULL_DECLARATION,
76 ModelProcessingPhase.EFFECTIVE_MODEL
79 private final Table<YangVersion, QName, StatementDefinitionContext<?, ?, ?>> definitions = HashBasedTable.create();
80 private final Map<QName, StatementDefinitionContext<?, ?, ?>> modelDefinedStmtDefs = new HashMap<>();
81 private final Map<ParserNamespace<?, ?>, NamespaceBehaviourWithListeners<?, ?>> supportedNamespaces =
83 private final List<MutableStatement> mutableStatementsToSeal = new ArrayList<>();
84 private final ImmutableMap<ModelProcessingPhase, StatementSupportBundle> supports;
85 private final Set<SourceSpecificContext> sources = new HashSet<>();
86 private final ImmutableSet<YangVersion> supportedVersions;
88 private Set<SourceSpecificContext> libSources = new HashSet<>();
89 private ModelProcessingPhase currentPhase = ModelProcessingPhase.INIT;
90 private ModelProcessingPhase finishedPhase = ModelProcessingPhase.INIT;
92 BuildGlobalContext(final ImmutableMap<ModelProcessingPhase, StatementSupportBundle> supports,
93 final ImmutableMap<ValidationBundleType, Collection<?>> supportedValidation) {
94 this.supports = requireNonNull(supports, "BuildGlobalContext#supports cannot be null");
96 addToNamespace(ValidationBundles.NAMESPACE, supportedValidation);
98 supportedVersions = ImmutableSet.copyOf(
99 verifyNotNull(supports.get(ModelProcessingPhase.INIT)).getSupportedVersions());
102 StatementSupportBundle getSupportsForPhase(final ModelProcessingPhase phase) {
103 return supports.get(phase);
106 void addSource(final @NonNull StatementStreamSource source) {
107 sources.add(new SourceSpecificContext(this, source));
110 void addLibSource(final @NonNull StatementStreamSource libSource) {
111 checkState(currentPhase == ModelProcessingPhase.INIT,
112 "Add library source is allowed in ModelProcessingPhase.INIT only");
113 libSources.add(new SourceSpecificContext(this, libSource));
116 void setSupportedFeatures(final Set<QName> supportedFeatures) {
117 if (supportedFeatures instanceof FeatureSet) {
118 addToNamespace(ParserNamespaces.SUPPORTED_FEATURES, Empty.value(), supportedFeatures);
120 addToNamespace(ParserNamespaces.SUPPORTED_FEATURES, Empty.value(), ImmutableSet.copyOf(supportedFeatures));
124 void setModulesDeviatedByModules(final SetMultimap<QNameModule, QNameModule> modulesDeviatedByModules) {
125 addToNamespace(ParserNamespaces.MODULES_DEVIATED_BY, Empty.value(),
126 ImmutableSetMultimap.copyOf(modulesDeviatedByModules));
130 public StorageNodeType getStorageNodeType() {
131 return StorageNodeType.GLOBAL;
135 public NamespaceStorageNode getParentNamespaceStorage() {
140 public NamespaceBehaviour.Registry getBehaviourRegistry() {
145 public <K, V> NamespaceBehaviourWithListeners<K, V> getNamespaceBehaviour(final ParserNamespace<K, V> type) {
146 NamespaceBehaviourWithListeners<?, ?> potential = supportedNamespaces.get(type);
147 if (potential == null) {
148 final var potentialRaw = verifyNotNull(supports.get(currentPhase)).getNamespaceBehaviour(type);
149 if (potentialRaw != null) {
150 potential = createNamespaceContext(potentialRaw);
151 supportedNamespaces.put(type, potential);
153 throw new NamespaceNotAvailableException("Namespace " + type + " is not available in phase "
158 Verify.verify(type.equals(potential.getIdentifier()));
160 * Safe cast, previous checkState checks equivalence of key from which
161 * type argument are derived
163 return (NamespaceBehaviourWithListeners<K, V>) potential;
166 @SuppressWarnings({ "unchecked", "rawtypes" })
167 private <K, V> NamespaceBehaviourWithListeners<K, V> createNamespaceContext(
168 final NamespaceBehaviour<K, V> potentialRaw) {
169 if (potentialRaw instanceof DerivedNamespaceBehaviour derived) {
170 final VirtualNamespaceContext derivedContext = new VirtualNamespaceContext(derived);
171 getNamespaceBehaviour(derived.getDerivedFrom()).addDerivedNamespace(derivedContext);
172 return derivedContext;
174 return new SimpleNamespaceContext<>(potentialRaw);
177 StatementDefinitionContext<?, ?, ?> getStatementDefinition(final YangVersion version, final QName name) {
178 StatementDefinitionContext<?, ?, ?> potential = definitions.get(version, name);
179 if (potential == null) {
180 final var potentialRaw = verifyNotNull(supports.get(currentPhase)).getStatementDefinition(version, name);
181 if (potentialRaw != null) {
182 potential = new StatementDefinitionContext<>(potentialRaw);
183 definitions.put(version, name, potential);
189 StatementDefinitionContext<?, ?, ?> getModelDefinedStatementDefinition(final QName name) {
190 return modelDefinedStmtDefs.get(name);
193 void putModelDefinedStatementDefinition(final QName name, final StatementDefinitionContext<?, ?, ?> def) {
194 modelDefinedStmtDefs.put(name, def);
197 private void executePhases() throws ReactorException {
198 for (final ModelProcessingPhase phase : PHASE_EXECUTION_ORDER) {
200 loadPhaseStatements();
201 completePhaseActions();
206 ReactorDeclaredModel build() throws ReactorException {
211 EffectiveSchemaContext buildEffective() throws ReactorException {
213 return transformEffective();
216 private ReactorDeclaredModel transform() {
217 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
218 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
219 for (final SourceSpecificContext source : sources) {
220 rootStatements.add(source.getRoot().declared());
222 return new ReactorDeclaredModel(rootStatements);
225 private SomeModifiersUnresolvedException propagateException(final SourceSpecificContext source,
226 final RuntimeException cause) throws SomeModifiersUnresolvedException {
227 final SourceIdentifier sourceId = createSourceIdentifier(source.getRoot());
228 if (!(cause instanceof SourceException)) {
230 * This should not be happening as all our processing should provide SourceExceptions.
231 * We will wrap the exception to provide enough information to identify the problematic model,
232 * but also emit a warning so the offending codepath will get fixed.
234 LOG.warn("Unexpected error processing source {}. Please file an issue with this model attached.",
238 throw new SomeModifiersUnresolvedException(currentPhase, sourceId, cause);
241 private static SourceIdentifier createSourceIdentifier(final StmtContext<?, ?, ?> root) {
242 final QNameModule qNameModule = root.namespaceItem(ParserNamespaces.MODULECTX_TO_QNAME, root);
243 final Object arg = root.getArgument();
244 verify(arg instanceof Unqualified, "Unexpected argument %s", arg);
246 if (qNameModule != null) {
247 // creates SourceIdentifier for a module
248 return new SourceIdentifier((Unqualified) arg, qNameModule.getRevision().orElse(null));
251 // creates SourceIdentifier for a submodule
252 return new SourceIdentifier((Unqualified) arg,
253 StmtContextUtils.getLatestRevision(root.declaredSubstatements()).orElse(null));
256 @SuppressWarnings("checkstyle:illegalCatch")
257 private EffectiveSchemaContext transformEffective() throws ReactorException {
258 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
259 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
260 final List<EffectiveStatement<?, ?>> rootEffectiveStatements = new ArrayList<>(sources.size());
262 for (final SourceSpecificContext source : sources) {
263 final RootStatementContext<?, ?, ?> root = source.getRoot();
265 rootStatements.add(root.declared());
266 rootEffectiveStatements.add(root.buildEffective());
267 } catch (final RuntimeException ex) {
268 throw propagateException(source, ex);
272 sealMutableStatements();
273 return EffectiveSchemaContext.create(rootStatements, rootEffectiveStatements);
276 private void startPhase(final ModelProcessingPhase phase) {
277 checkState(Objects.equals(finishedPhase, phase.getPreviousPhase()));
278 startPhaseFor(phase, sources);
279 startPhaseFor(phase, libSources);
281 currentPhase = phase;
282 LOG.debug("Global phase {} started", phase);
285 private static void startPhaseFor(final ModelProcessingPhase phase, final Set<SourceSpecificContext> sources) {
286 for (final SourceSpecificContext source : sources) {
287 source.startPhase(phase);
291 private void loadPhaseStatements() throws ReactorException {
292 checkState(currentPhase != null);
293 loadPhaseStatementsFor(sources);
294 loadPhaseStatementsFor(libSources);
297 @SuppressWarnings("checkstyle:illegalCatch")
298 private void loadPhaseStatementsFor(final Set<SourceSpecificContext> srcs) throws ReactorException {
299 for (final SourceSpecificContext source : srcs) {
301 source.loadStatements();
302 } catch (final RuntimeException ex) {
303 throw propagateException(source, ex);
308 private SomeModifiersUnresolvedException addSourceExceptions(final List<SourceSpecificContext> sourcesToProgress) {
309 boolean addedCause = false;
310 SomeModifiersUnresolvedException buildFailure = null;
311 for (final SourceSpecificContext failedSource : sourcesToProgress) {
312 final Optional<SourceException> optSourceEx = failedSource.failModifiers(currentPhase);
313 if (optSourceEx.isEmpty()) {
317 final SourceException sourceEx = optSourceEx.get();
318 // Workaround for broken logging implementations which ignore
319 // suppressed exceptions
320 final Throwable cause = sourceEx.getCause() != null ? sourceEx.getCause() : sourceEx;
321 if (LOG.isDebugEnabled()) {
322 LOG.error("Failed to parse YANG from source {}", failedSource, sourceEx);
324 LOG.error("Failed to parse YANG from source {}: {}", failedSource, cause.getMessage());
327 final Throwable[] suppressed = sourceEx.getSuppressed();
328 if (suppressed.length > 0) {
329 LOG.error("{} additional errors reported:", suppressed.length);
332 for (final Throwable t : suppressed) {
333 LOG.error("Error {}: {}", count, t.getMessage());
340 final SourceIdentifier sourceId = createSourceIdentifier(failedSource.getRoot());
341 buildFailure = new SomeModifiersUnresolvedException(currentPhase, sourceId, sourceEx);
343 buildFailure.addSuppressed(sourceEx);
349 @SuppressWarnings("checkstyle:illegalCatch")
350 private void completePhaseActions() throws ReactorException {
351 checkState(currentPhase != null);
352 final List<SourceSpecificContext> sourcesToProgress = new ArrayList<>(sources);
353 if (!libSources.isEmpty()) {
354 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
355 "Yang library sources should be empty after ModelProcessingPhase.SOURCE_PRE_LINKAGE, "
356 + "but current phase was %s", currentPhase);
357 sourcesToProgress.addAll(libSources);
360 boolean progressing = true;
361 while (progressing) {
362 // We reset progressing to false.
364 final Iterator<SourceSpecificContext> currentSource = sourcesToProgress.iterator();
365 while (currentSource.hasNext()) {
366 final SourceSpecificContext nextSourceCtx = currentSource.next();
368 final PhaseCompletionProgress sourceProgress =
369 nextSourceCtx.tryToCompletePhase(currentPhase.executionOrder());
370 switch (sourceProgress) {
372 currentSource.remove();
373 // we were able to make progress in computation
383 throw new IllegalStateException("Unsupported phase progress " + sourceProgress);
385 } catch (final RuntimeException ex) {
386 throw propagateException(nextSourceCtx, ex);
391 if (!libSources.isEmpty()) {
392 final Set<SourceSpecificContext> requiredLibs = getRequiredSourcesFromLib();
393 sources.addAll(requiredLibs);
394 libSources = ImmutableSet.of();
396 * We want to report errors of relevant sources only, so any others can
399 sourcesToProgress.retainAll(sources);
402 if (!sourcesToProgress.isEmpty()) {
403 final SomeModifiersUnresolvedException buildFailure = addSourceExceptions(sourcesToProgress);
404 if (buildFailure != null) {
410 private Set<SourceSpecificContext> getRequiredSourcesFromLib() {
411 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
412 "Required library sources can be collected only in ModelProcessingPhase.SOURCE_PRE_LINKAGE phase,"
413 + " but current phase was %s", currentPhase);
414 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable =
415 TreeBasedTable.create(Unqualified::compareTo, Revision::compare);
416 for (final SourceSpecificContext libSource : libSources) {
417 final SourceIdentifier libSourceIdentifier = requireNonNull(libSource.getRootIdentifier());
418 libSourcesTable.put(libSourceIdentifier.name(),
419 Optional.ofNullable(libSourceIdentifier.revision()), libSource);
422 final Set<SourceSpecificContext> requiredLibs = new HashSet<>();
423 for (final SourceSpecificContext source : sources) {
424 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, source);
425 removeConflictingLibSources(source, requiredLibs);
430 private void collectRequiredSourcesFromLib(
431 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable,
432 final Set<SourceSpecificContext> requiredLibs, final SourceSpecificContext source) {
433 for (final SourceIdentifier requiredSource : source.getRequiredSources()) {
434 final SourceSpecificContext libSource = getRequiredLibSource(requiredSource, libSourcesTable);
435 if (libSource != null && requiredLibs.add(libSource)) {
436 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, libSource);
441 private static SourceSpecificContext getRequiredLibSource(final SourceIdentifier requiredSource,
442 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable) {
443 final var revision = requiredSource.revision();
444 return revision != null ? libSourcesTable.get(requiredSource.name(), Optional.of(revision))
445 : getLatestRevision(libSourcesTable.row(requiredSource.name()));
448 private static SourceSpecificContext getLatestRevision(
449 final SortedMap<Optional<Revision>, SourceSpecificContext> sourceMap) {
450 return sourceMap != null && !sourceMap.isEmpty() ? sourceMap.get(sourceMap.lastKey()) : null;
453 // removes required library sources which would cause namespace/name conflict with one of the main sources
454 // later in the parsing process. this can happen if we add a parent module or a submodule as a main source
455 // and the same parent module or submodule is added as one of the library sources.
456 // such situation may occur when using the yang-system-test artifact - if a parent module/submodule is specified
457 // as its argument and the same dir is specified as one of the library dirs through -p option).
458 private static void removeConflictingLibSources(final SourceSpecificContext source,
459 final Set<SourceSpecificContext> requiredLibs) {
460 final Iterator<SourceSpecificContext> requiredLibsIter = requiredLibs.iterator();
461 while (requiredLibsIter.hasNext()) {
462 final SourceSpecificContext currentReqSource = requiredLibsIter.next();
463 if (source.getRootIdentifier().equals(currentReqSource.getRootIdentifier())) {
464 requiredLibsIter.remove();
469 private void endPhase(final ModelProcessingPhase phase) {
470 checkState(currentPhase == phase);
471 finishedPhase = currentPhase;
472 LOG.debug("Global phase {} finished", phase);
475 Set<SourceSpecificContext> getSources() {
479 public Set<YangVersion> getSupportedVersions() {
480 return supportedVersions;
483 void addMutableStmtToSeal(final MutableStatement mutableStatement) {
484 mutableStatementsToSeal.add(mutableStatement);
487 void sealMutableStatements() {
488 for (final MutableStatement mutableStatement : mutableStatementsToSeal) {
489 mutableStatement.seal();
491 mutableStatementsToSeal.clear();