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.SourceException;
59 import org.opendaylight.yangtools.yang.parser.spi.source.SourceParserNamespaces;
60 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
61 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundles;
62 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundles.ValidationBundleType;
63 import org.opendaylight.yangtools.yang.parser.stmt.reactor.SourceSpecificContext.PhaseCompletionProgress;
64 import org.slf4j.Logger;
65 import org.slf4j.LoggerFactory;
67 final class BuildGlobalContext extends NamespaceStorageSupport implements Registry {
68 private static final Logger LOG = LoggerFactory.getLogger(BuildGlobalContext.class);
70 private static final ModelProcessingPhase[] PHASE_EXECUTION_ORDER = {
71 ModelProcessingPhase.SOURCE_PRE_LINKAGE,
72 ModelProcessingPhase.SOURCE_LINKAGE,
73 ModelProcessingPhase.STATEMENT_DEFINITION,
74 ModelProcessingPhase.FULL_DECLARATION,
75 ModelProcessingPhase.EFFECTIVE_MODEL
78 private final Table<YangVersion, QName, StatementDefinitionContext<?, ?, ?>> definitions = HashBasedTable.create();
79 private final Map<QName, StatementDefinitionContext<?, ?, ?>> modelDefinedStmtDefs = new HashMap<>();
80 private final Map<ParserNamespace<?, ?>, NamespaceBehaviourWithListeners<?, ?, ?>> supportedNamespaces =
82 private final List<MutableStatement> mutableStatementsToSeal = new ArrayList<>();
83 private final ImmutableMap<ModelProcessingPhase, StatementSupportBundle> supports;
84 private final Set<SourceSpecificContext> sources = new HashSet<>();
85 private final ImmutableSet<YangVersion> supportedVersions;
87 private Set<SourceSpecificContext> libSources = new HashSet<>();
88 private ModelProcessingPhase currentPhase = ModelProcessingPhase.INIT;
89 private ModelProcessingPhase finishedPhase = ModelProcessingPhase.INIT;
91 BuildGlobalContext(final ImmutableMap<ModelProcessingPhase, StatementSupportBundle> supports,
92 final ImmutableMap<ValidationBundleType, Collection<?>> supportedValidation) {
93 this.supports = requireNonNull(supports, "BuildGlobalContext#supports cannot be null");
95 addToNamespace(ValidationBundles.NAMESPACE, supportedValidation);
97 supportedVersions = ImmutableSet.copyOf(
98 verifyNotNull(supports.get(ModelProcessingPhase.INIT)).getSupportedVersions());
101 StatementSupportBundle getSupportsForPhase(final ModelProcessingPhase phase) {
102 return supports.get(phase);
105 void addSource(final @NonNull StatementStreamSource source) {
106 sources.add(new SourceSpecificContext(this, source));
109 void addLibSource(final @NonNull StatementStreamSource libSource) {
110 checkState(currentPhase == ModelProcessingPhase.INIT,
111 "Add library source is allowed in ModelProcessingPhase.INIT only");
112 libSources.add(new SourceSpecificContext(this, libSource));
115 void setSupportedFeatures(final Set<QName> supportedFeatures) {
116 addToNamespace(SourceParserNamespaces.SUPPORTED_FEATURES, Empty.value(),
117 ImmutableSet.copyOf(supportedFeatures));
120 void setModulesDeviatedByModules(final SetMultimap<QNameModule, QNameModule> modulesDeviatedByModules) {
121 addToNamespace(SourceParserNamespaces.MODULES_DEVIATED_BY, 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(
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 derived) {
167 final VirtualNamespaceContext derivedContext = new VirtualNamespaceContext(derived);
168 getNamespaceBehaviour(derived.getDerivedFrom()).addDerivedNamespace(derivedContext);
169 return derivedContext;
171 return new SimpleNamespaceContext<>(potentialRaw);
174 StatementDefinitionContext<?, ?, ?> getStatementDefinition(final YangVersion version, final QName name) {
175 StatementDefinitionContext<?, ?, ?> potential = definitions.get(version, name);
176 if (potential == null) {
177 final var potentialRaw = verifyNotNull(supports.get(currentPhase)).getStatementDefinition(version, name);
178 if (potentialRaw != null) {
179 potential = new StatementDefinitionContext<>(potentialRaw);
180 definitions.put(version, name, potential);
186 StatementDefinitionContext<?, ?, ?> getModelDefinedStatementDefinition(final QName name) {
187 return modelDefinedStmtDefs.get(name);
190 void putModelDefinedStatementDefinition(final QName name, final StatementDefinitionContext<?, ?, ?> def) {
191 modelDefinedStmtDefs.put(name, def);
194 private void executePhases() throws ReactorException {
195 for (final ModelProcessingPhase phase : PHASE_EXECUTION_ORDER) {
197 loadPhaseStatements();
198 completePhaseActions();
203 ReactorDeclaredModel build() throws ReactorException {
208 EffectiveSchemaContext buildEffective() throws ReactorException {
210 return transformEffective();
213 private ReactorDeclaredModel transform() {
214 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
215 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
216 for (final SourceSpecificContext source : sources) {
217 rootStatements.add(source.getRoot().declared());
219 return new ReactorDeclaredModel(rootStatements);
222 private SomeModifiersUnresolvedException propagateException(final SourceSpecificContext source,
223 final RuntimeException cause) throws SomeModifiersUnresolvedException {
224 final SourceIdentifier sourceId = createSourceIdentifier(source.getRoot());
225 if (!(cause instanceof SourceException)) {
227 * This should not be happening as all our processing should provide SourceExceptions.
228 * We will wrap the exception to provide enough information to identify the problematic model,
229 * but also emit a warning so the offending codepath will get fixed.
231 LOG.warn("Unexpected error processing source {}. Please file an issue with this model attached.",
235 throw new SomeModifiersUnresolvedException(currentPhase, sourceId, cause);
238 private static SourceIdentifier createSourceIdentifier(final StmtContext<?, ?, ?> root) {
239 final QNameModule qNameModule = root.getFromNamespace(SourceParserNamespaces.MODULECTX_TO_QNAME, root);
240 final Object arg = root.getArgument();
241 verify(arg instanceof Unqualified, "Unexpected argument %s", arg);
243 if (qNameModule != null) {
244 // creates SourceIdentifier for a module
245 return new SourceIdentifier((Unqualified) arg, qNameModule.getRevision().orElse(null));
248 // creates SourceIdentifier for a submodule
249 return new SourceIdentifier((Unqualified) arg,
250 StmtContextUtils.getLatestRevision(root.declaredSubstatements()).orElse(null));
253 @SuppressWarnings("checkstyle:illegalCatch")
254 private EffectiveSchemaContext transformEffective() throws ReactorException {
255 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
256 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
257 final List<EffectiveStatement<?, ?>> rootEffectiveStatements = new ArrayList<>(sources.size());
259 for (final SourceSpecificContext source : sources) {
260 final RootStatementContext<?, ?, ?> root = source.getRoot();
262 rootStatements.add(root.declared());
263 rootEffectiveStatements.add(root.buildEffective());
264 } catch (final RuntimeException ex) {
265 throw propagateException(source, ex);
269 sealMutableStatements();
270 return EffectiveSchemaContext.create(rootStatements, rootEffectiveStatements);
273 private void startPhase(final ModelProcessingPhase phase) {
274 checkState(Objects.equals(finishedPhase, phase.getPreviousPhase()));
275 startPhaseFor(phase, sources);
276 startPhaseFor(phase, libSources);
278 currentPhase = phase;
279 LOG.debug("Global phase {} started", phase);
282 private static void startPhaseFor(final ModelProcessingPhase phase, final Set<SourceSpecificContext> sources) {
283 for (final SourceSpecificContext source : sources) {
284 source.startPhase(phase);
288 private void loadPhaseStatements() throws ReactorException {
289 checkState(currentPhase != null);
290 loadPhaseStatementsFor(sources);
291 loadPhaseStatementsFor(libSources);
294 @SuppressWarnings("checkstyle:illegalCatch")
295 private void loadPhaseStatementsFor(final Set<SourceSpecificContext> srcs) throws ReactorException {
296 for (final SourceSpecificContext source : srcs) {
298 source.loadStatements();
299 } catch (final RuntimeException ex) {
300 throw propagateException(source, ex);
305 private SomeModifiersUnresolvedException addSourceExceptions(final List<SourceSpecificContext> sourcesToProgress) {
306 boolean addedCause = false;
307 SomeModifiersUnresolvedException buildFailure = null;
308 for (final SourceSpecificContext failedSource : sourcesToProgress) {
309 final Optional<SourceException> optSourceEx = failedSource.failModifiers(currentPhase);
310 if (optSourceEx.isEmpty()) {
314 final SourceException sourceEx = optSourceEx.get();
315 // Workaround for broken logging implementations which ignore
316 // suppressed exceptions
317 final Throwable cause = sourceEx.getCause() != null ? sourceEx.getCause() : sourceEx;
318 if (LOG.isDebugEnabled()) {
319 LOG.error("Failed to parse YANG from source {}", failedSource, sourceEx);
321 LOG.error("Failed to parse YANG from source {}: {}", failedSource, cause.getMessage());
324 final Throwable[] suppressed = sourceEx.getSuppressed();
325 if (suppressed.length > 0) {
326 LOG.error("{} additional errors reported:", suppressed.length);
329 for (final Throwable t : suppressed) {
330 LOG.error("Error {}: {}", count, t.getMessage());
337 final SourceIdentifier sourceId = createSourceIdentifier(failedSource.getRoot());
338 buildFailure = new SomeModifiersUnresolvedException(currentPhase, sourceId, sourceEx);
340 buildFailure.addSuppressed(sourceEx);
346 @SuppressWarnings("checkstyle:illegalCatch")
347 private void completePhaseActions() throws ReactorException {
348 checkState(currentPhase != null);
349 final List<SourceSpecificContext> sourcesToProgress = new ArrayList<>(sources);
350 if (!libSources.isEmpty()) {
351 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
352 "Yang library sources should be empty after ModelProcessingPhase.SOURCE_PRE_LINKAGE, "
353 + "but current phase was %s", currentPhase);
354 sourcesToProgress.addAll(libSources);
357 boolean progressing = true;
358 while (progressing) {
359 // We reset progressing to false.
361 final Iterator<SourceSpecificContext> currentSource = sourcesToProgress.iterator();
362 while (currentSource.hasNext()) {
363 final SourceSpecificContext nextSourceCtx = currentSource.next();
365 final PhaseCompletionProgress sourceProgress =
366 nextSourceCtx.tryToCompletePhase(currentPhase.executionOrder());
367 switch (sourceProgress) {
369 currentSource.remove();
370 // we were able to make progress in computation
380 throw new IllegalStateException("Unsupported phase progress " + sourceProgress);
382 } catch (final RuntimeException ex) {
383 throw propagateException(nextSourceCtx, ex);
388 if (!libSources.isEmpty()) {
389 final Set<SourceSpecificContext> requiredLibs = getRequiredSourcesFromLib();
390 sources.addAll(requiredLibs);
391 libSources = ImmutableSet.of();
393 * We want to report errors of relevant sources only, so any others can
396 sourcesToProgress.retainAll(sources);
399 if (!sourcesToProgress.isEmpty()) {
400 final SomeModifiersUnresolvedException buildFailure = addSourceExceptions(sourcesToProgress);
401 if (buildFailure != null) {
407 private Set<SourceSpecificContext> getRequiredSourcesFromLib() {
408 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
409 "Required library sources can be collected only in ModelProcessingPhase.SOURCE_PRE_LINKAGE phase,"
410 + " but current phase was %s", currentPhase);
411 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable =
412 TreeBasedTable.create(Unqualified::compareTo, Revision::compare);
413 for (final SourceSpecificContext libSource : libSources) {
414 final SourceIdentifier libSourceIdentifier = requireNonNull(libSource.getRootIdentifier());
415 libSourcesTable.put(libSourceIdentifier.name(),
416 Optional.ofNullable(libSourceIdentifier.revision()), libSource);
419 final Set<SourceSpecificContext> requiredLibs = new HashSet<>();
420 for (final SourceSpecificContext source : sources) {
421 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, source);
422 removeConflictingLibSources(source, requiredLibs);
427 private void collectRequiredSourcesFromLib(
428 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable,
429 final Set<SourceSpecificContext> requiredLibs, final SourceSpecificContext source) {
430 for (final SourceIdentifier requiredSource : source.getRequiredSources()) {
431 final SourceSpecificContext libSource = getRequiredLibSource(requiredSource, libSourcesTable);
432 if (libSource != null && requiredLibs.add(libSource)) {
433 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, libSource);
438 private static SourceSpecificContext getRequiredLibSource(final SourceIdentifier requiredSource,
439 final TreeBasedTable<Unqualified, Optional<Revision>, SourceSpecificContext> libSourcesTable) {
440 final var revision = requiredSource.revision();
441 return revision != null ? libSourcesTable.get(requiredSource.name(), Optional.of(revision))
442 : getLatestRevision(libSourcesTable.row(requiredSource.name()));
445 private static SourceSpecificContext getLatestRevision(
446 final SortedMap<Optional<Revision>, SourceSpecificContext> sourceMap) {
447 return sourceMap != null && !sourceMap.isEmpty() ? sourceMap.get(sourceMap.lastKey()) : null;
450 // removes required library sources which would cause namespace/name conflict with one of the main sources
451 // later in the parsing process. this can happen if we add a parent module or a submodule as a main source
452 // and the same parent module or submodule is added as one of the library sources.
453 // such situation may occur when using the yang-system-test artifact - if a parent module/submodule is specified
454 // as its argument and the same dir is specified as one of the library dirs through -p option).
455 private static void removeConflictingLibSources(final SourceSpecificContext source,
456 final Set<SourceSpecificContext> requiredLibs) {
457 final Iterator<SourceSpecificContext> requiredLibsIter = requiredLibs.iterator();
458 while (requiredLibsIter.hasNext()) {
459 final SourceSpecificContext currentReqSource = requiredLibsIter.next();
460 if (source.getRootIdentifier().equals(currentReqSource.getRootIdentifier())) {
461 requiredLibsIter.remove();
466 private void endPhase(final ModelProcessingPhase phase) {
467 checkState(currentPhase == phase);
468 finishedPhase = currentPhase;
469 LOG.debug("Global phase {} finished", phase);
472 Set<SourceSpecificContext> getSources() {
476 public Set<YangVersion> getSupportedVersions() {
477 return supportedVersions;
480 void addMutableStmtToSeal(final MutableStatement mutableStatement) {
481 mutableStatementsToSeal.add(mutableStatement);
484 void sealMutableStatements() {
485 for (final MutableStatement mutableStatement : mutableStatementsToSeal) {
486 mutableStatement.seal();
488 mutableStatementsToSeal.clear();