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.SourceIdentifier;
44 import org.opendaylight.yangtools.yang.parser.spi.meta.DerivedNamespaceBehaviour;
45 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
46 import org.opendaylight.yangtools.yang.parser.spi.meta.MutableStatement;
47 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour;
48 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.NamespaceStorageNode;
49 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
50 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.StorageNodeType;
51 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceNotAvailableException;
52 import org.opendaylight.yangtools.yang.parser.spi.meta.ParserNamespace;
53 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
54 import org.opendaylight.yangtools.yang.parser.spi.meta.SomeModifiersUnresolvedException;
55 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupportBundle;
56 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
57 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
58 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleCtxToModuleQName;
59 import org.opendaylight.yangtools.yang.parser.spi.source.ModulesDeviatedByModules;
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.source.SupportedFeaturesNamespace;
63 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace;
64 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace.ValidationBundleType;
65 import org.opendaylight.yangtools.yang.parser.stmt.reactor.SourceSpecificContext.PhaseCompletionProgress;
66 import org.slf4j.Logger;
67 import org.slf4j.LoggerFactory;
69 final class BuildGlobalContext extends NamespaceStorageSupport implements Registry {
70 private static final Logger LOG = LoggerFactory.getLogger(BuildGlobalContext.class);
72 private static final ModelProcessingPhase[] PHASE_EXECUTION_ORDER = {
73 ModelProcessingPhase.SOURCE_PRE_LINKAGE,
74 ModelProcessingPhase.SOURCE_LINKAGE,
75 ModelProcessingPhase.STATEMENT_DEFINITION,
76 ModelProcessingPhase.FULL_DECLARATION,
77 ModelProcessingPhase.EFFECTIVE_MODEL
80 private final Table<YangVersion, QName, StatementDefinitionContext<?, ?, ?>> definitions = HashBasedTable.create();
81 private final Map<QName, StatementDefinitionContext<?, ?, ?>> modelDefinedStmtDefs = new HashMap<>();
82 private final Map<Class<?>, NamespaceBehaviourWithListeners<?, ?, ?>> supportedNamespaces = new HashMap<>();
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(ValidationBundlesNamespace.class, 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 addToNamespace(SupportedFeaturesNamespace.class, Empty.value(), ImmutableSet.copyOf(supportedFeatures));
120 void setModulesDeviatedByModules(final SetMultimap<QNameModule, QNameModule> modulesDeviatedByModules) {
121 addToNamespace(ModulesDeviatedByModules.class, Empty.value(),
122 ImmutableSetMultimap.copyOf(modulesDeviatedByModules));
126 public StorageNodeType getStorageNodeType() {
127 return StorageNodeType.GLOBAL;
131 public NamespaceStorageNode getParentNamespaceStorage() {
136 public NamespaceBehaviour.Registry getBehaviourRegistry() {
141 public <K, V, N extends ParserNamespace<K, V>> NamespaceBehaviourWithListeners<K, V, N> getNamespaceBehaviour(
142 final Class<N> type) {
143 NamespaceBehaviourWithListeners<?, ?, ?> potential = supportedNamespaces.get(type);
144 if (potential == null) {
145 final var potentialRaw = verifyNotNull(supports.get(currentPhase)).getNamespaceBehaviour(type);
146 if (potentialRaw != null) {
147 potential = createNamespaceContext(potentialRaw);
148 supportedNamespaces.put(type, potential);
150 throw new NamespaceNotAvailableException("Namespace " + type + " is not available in phase "
155 Verify.verify(type.equals(potential.getIdentifier()));
157 * Safe cast, previous checkState checks equivalence of key from which
158 * type argument are derived
160 return (NamespaceBehaviourWithListeners<K, V, N>) potential;
163 @SuppressWarnings({ "unchecked", "rawtypes" })
164 private <K, V, N extends ParserNamespace<K, V>> NamespaceBehaviourWithListeners<K, V, N> createNamespaceContext(
165 final NamespaceBehaviour<K, V, N> potentialRaw) {
166 if (potentialRaw instanceof DerivedNamespaceBehaviour) {
167 final VirtualNamespaceContext derivedContext = new VirtualNamespaceContext(
168 (DerivedNamespaceBehaviour) potentialRaw);
169 getNamespaceBehaviour(((DerivedNamespaceBehaviour) potentialRaw).getDerivedFrom()).addDerivedNamespace(
171 return derivedContext;
173 return new SimpleNamespaceContext<>(potentialRaw);
176 StatementDefinitionContext<?, ?, ?> getStatementDefinition(final YangVersion version, final QName name) {
177 StatementDefinitionContext<?, ?, ?> potential = definitions.get(version, name);
178 if (potential == null) {
179 final var potentialRaw = verifyNotNull(supports.get(currentPhase)).getStatementDefinition(version, name);
180 if (potentialRaw != null) {
181 potential = new StatementDefinitionContext<>(potentialRaw);
182 definitions.put(version, name, potential);
188 StatementDefinitionContext<?, ?, ?> getModelDefinedStatementDefinition(final QName name) {
189 return modelDefinedStmtDefs.get(name);
192 void putModelDefinedStatementDefinition(final QName name, final StatementDefinitionContext<?, ?, ?> def) {
193 modelDefinedStmtDefs.put(name, def);
196 private void executePhases() throws ReactorException {
197 for (final ModelProcessingPhase phase : PHASE_EXECUTION_ORDER) {
199 loadPhaseStatements();
200 completePhaseActions();
205 ReactorDeclaredModel build() throws ReactorException {
210 EffectiveSchemaContext buildEffective() throws ReactorException {
212 return transformEffective();
215 private ReactorDeclaredModel transform() {
216 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
217 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
218 for (final SourceSpecificContext source : sources) {
219 rootStatements.add(source.getRoot().declared());
221 return new ReactorDeclaredModel(rootStatements);
224 private SomeModifiersUnresolvedException propagateException(final SourceSpecificContext source,
225 final RuntimeException cause) throws SomeModifiersUnresolvedException {
226 final SourceIdentifier sourceId = createSourceIdentifier(source.getRoot());
227 if (!(cause instanceof SourceException)) {
229 * This should not be happening as all our processing should provide SourceExceptions.
230 * We will wrap the exception to provide enough information to identify the problematic model,
231 * but also emit a warning so the offending codepath will get fixed.
233 LOG.warn("Unexpected error processing source {}. Please file an issue with this model attached.",
237 throw new SomeModifiersUnresolvedException(currentPhase, sourceId, cause);
240 private static SourceIdentifier createSourceIdentifier(final StmtContext<?, ?, ?> root) {
241 final QNameModule qNameModule = root.getFromNamespace(ModuleCtxToModuleQName.class, root);
242 final Object arg = root.getArgument();
243 verify(arg instanceof Unqualified, "Unexpected argument %s", arg);
245 if (qNameModule != null) {
246 // creates SourceIdentifier for a module
247 return new SourceIdentifier((Unqualified) arg, qNameModule.getRevision().orElse(null));
250 // creates SourceIdentifier for a submodule
251 return new SourceIdentifier((Unqualified) arg,
252 StmtContextUtils.getLatestRevision(root.declaredSubstatements()).orElse(null));
255 @SuppressWarnings("checkstyle:illegalCatch")
256 private EffectiveSchemaContext transformEffective() throws ReactorException {
257 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
258 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
259 final List<EffectiveStatement<?, ?>> rootEffectiveStatements = new ArrayList<>(sources.size());
261 for (final SourceSpecificContext source : sources) {
262 final RootStatementContext<?, ?, ?> root = source.getRoot();
264 rootStatements.add(root.declared());
265 rootEffectiveStatements.add(root.buildEffective());
266 } catch (final RuntimeException ex) {
267 throw propagateException(source, ex);
271 sealMutableStatements();
272 return EffectiveSchemaContext.create(rootStatements, rootEffectiveStatements);
275 private void startPhase(final ModelProcessingPhase phase) {
276 checkState(Objects.equals(finishedPhase, phase.getPreviousPhase()));
277 startPhaseFor(phase, sources);
278 startPhaseFor(phase, libSources);
280 currentPhase = phase;
281 LOG.debug("Global phase {} started", phase);
284 private static void startPhaseFor(final ModelProcessingPhase phase, final Set<SourceSpecificContext> sources) {
285 for (final SourceSpecificContext source : sources) {
286 source.startPhase(phase);
290 private void loadPhaseStatements() throws ReactorException {
291 checkState(currentPhase != null);
292 loadPhaseStatementsFor(sources);
293 loadPhaseStatementsFor(libSources);
296 @SuppressWarnings("checkstyle:illegalCatch")
297 private void loadPhaseStatementsFor(final Set<SourceSpecificContext> srcs) throws ReactorException {
298 for (final SourceSpecificContext source : srcs) {
300 source.loadStatements();
301 } catch (final RuntimeException ex) {
302 throw propagateException(source, ex);
307 private SomeModifiersUnresolvedException addSourceExceptions(final List<SourceSpecificContext> sourcesToProgress) {
308 boolean addedCause = false;
309 SomeModifiersUnresolvedException buildFailure = null;
310 for (final SourceSpecificContext failedSource : sourcesToProgress) {
311 final Optional<SourceException> optSourceEx = failedSource.failModifiers(currentPhase);
312 if (optSourceEx.isEmpty()) {
316 final SourceException sourceEx = optSourceEx.get();
317 // Workaround for broken logging implementations which ignore
318 // suppressed exceptions
319 final Throwable cause = sourceEx.getCause() != null ? sourceEx.getCause() : sourceEx;
320 if (LOG.isDebugEnabled()) {
321 LOG.error("Failed to parse YANG from source {}", failedSource, sourceEx);
323 LOG.error("Failed to parse YANG from source {}: {}", failedSource, cause.getMessage());
326 final Throwable[] suppressed = sourceEx.getSuppressed();
327 if (suppressed.length > 0) {
328 LOG.error("{} additional errors reported:", suppressed.length);
331 for (final Throwable t : suppressed) {
332 LOG.error("Error {}: {}", count, t.getMessage());
339 final SourceIdentifier sourceId = createSourceIdentifier(failedSource.getRoot());
340 buildFailure = new SomeModifiersUnresolvedException(currentPhase, sourceId, sourceEx);
342 buildFailure.addSuppressed(sourceEx);
348 @SuppressWarnings("checkstyle:illegalCatch")
349 private void completePhaseActions() throws ReactorException {
350 checkState(currentPhase != null);
351 final List<SourceSpecificContext> sourcesToProgress = new ArrayList<>(sources);
352 if (!libSources.isEmpty()) {
353 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
354 "Yang library sources should be empty after ModelProcessingPhase.SOURCE_PRE_LINKAGE, "
355 + "but current phase was %s", currentPhase);
356 sourcesToProgress.addAll(libSources);
359 boolean progressing = true;
360 while (progressing) {
361 // We reset progressing to false.
363 final Iterator<SourceSpecificContext> currentSource = sourcesToProgress.iterator();
364 while (currentSource.hasNext()) {
365 final SourceSpecificContext nextSourceCtx = currentSource.next();
367 final PhaseCompletionProgress sourceProgress =
368 nextSourceCtx.tryToCompletePhase(currentPhase.executionOrder());
369 switch (sourceProgress) {
371 currentSource.remove();
372 // we were able to make progress in computation
382 throw new IllegalStateException("Unsupported phase progress " + sourceProgress);
384 } catch (final RuntimeException ex) {
385 throw propagateException(nextSourceCtx, ex);
390 if (!libSources.isEmpty()) {
391 final Set<SourceSpecificContext> requiredLibs = getRequiredSourcesFromLib();
392 sources.addAll(requiredLibs);
393 libSources = ImmutableSet.of();
395 * We want to report errors of relevant sources only, so any others can
398 sourcesToProgress.retainAll(sources);
401 if (!sourcesToProgress.isEmpty()) {
402 final SomeModifiersUnresolvedException buildFailure = addSourceExceptions(sourcesToProgress);
403 if (buildFailure != null) {
409 private Set<SourceSpecificContext> getRequiredSourcesFromLib() {
410 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
411 "Required library sources can be collected only in ModelProcessingPhase.SOURCE_PRE_LINKAGE phase,"
412 + " but current phase was %s", currentPhase);
413 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable =
414 TreeBasedTable.create(Unqualified::compareTo, Revision::compare);
415 for (final SourceSpecificContext libSource : libSources) {
416 final SourceIdentifier libSourceIdentifier = requireNonNull(libSource.getRootIdentifier());
417 libSourcesTable.put(libSourceIdentifier.name(),
418 Optional.ofNullable(libSourceIdentifier.revision()), libSource);
421 final Set<SourceSpecificContext> requiredLibs = new HashSet<>();
422 for (final SourceSpecificContext source : sources) {
423 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, source);
424 removeConflictingLibSources(source, requiredLibs);
429 private void collectRequiredSourcesFromLib(
430 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable,
431 final Set<SourceSpecificContext> requiredLibs, final SourceSpecificContext source) {
432 for (final SourceIdentifier requiredSource : source.getRequiredSources()) {
433 final SourceSpecificContext libSource = getRequiredLibSource(requiredSource, libSourcesTable);
434 if (libSource != null && requiredLibs.add(libSource)) {
435 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, libSource);
440 private static SourceSpecificContext getRequiredLibSource(final SourceIdentifier requiredSource,
441 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable) {
442 final var revision = requiredSource.revision();
443 return revision != null ? libSourcesTable.get(requiredSource.name(), Optional.of(revision))
444 : getLatestRevision(libSourcesTable.row(requiredSource.name()));
447 private static SourceSpecificContext getLatestRevision(
448 final SortedMap<Optional<Revision>, SourceSpecificContext> sourceMap) {
449 return sourceMap != null && !sourceMap.isEmpty() ? sourceMap.get(sourceMap.lastKey()) : null;
452 // removes required library sources which would cause namespace/name conflict with one of the main sources
453 // later in the parsing process. this can happen if we add a parent module or a submodule as a main source
454 // and the same parent module or submodule is added as one of the library sources.
455 // such situation may occur when using the yang-system-test artifact - if a parent module/submodule is specified
456 // as its argument and the same dir is specified as one of the library dirs through -p option).
457 private static void removeConflictingLibSources(final SourceSpecificContext source,
458 final Set<SourceSpecificContext> requiredLibs) {
459 final Iterator<SourceSpecificContext> requiredLibsIter = requiredLibs.iterator();
460 while (requiredLibsIter.hasNext()) {
461 final SourceSpecificContext currentReqSource = requiredLibsIter.next();
462 if (source.getRootIdentifier().equals(currentReqSource.getRootIdentifier())) {
463 requiredLibsIter.remove();
468 private void endPhase(final ModelProcessingPhase phase) {
469 checkState(currentPhase == phase);
470 finishedPhase = currentPhase;
471 LOG.debug("Global phase {} finished", phase);
474 Set<SourceSpecificContext> getSources() {
478 public Set<YangVersion> getSupportedVersions() {
479 return supportedVersions;
482 void addMutableStmtToSeal(final MutableStatement mutableStatement) {
483 mutableStatementsToSeal.add(mutableStatement);
486 void sealMutableStatements() {
487 for (final MutableStatement mutableStatement : mutableStatementsToSeal) {
488 mutableStatement.seal();
490 mutableStatementsToSeal.clear();