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 java.util.Objects.requireNonNull;
13 import com.google.common.base.Verify;
14 import com.google.common.collect.HashBasedTable;
15 import com.google.common.collect.ImmutableList;
16 import com.google.common.collect.ImmutableMap;
17 import com.google.common.collect.ImmutableSet;
18 import com.google.common.collect.Table;
19 import com.google.common.collect.TreeBasedTable;
20 import java.util.ArrayList;
21 import java.util.Collection;
22 import java.util.HashMap;
23 import java.util.HashSet;
24 import java.util.Iterator;
25 import java.util.List;
27 import java.util.Map.Entry;
28 import java.util.Objects;
29 import java.util.Optional;
31 import java.util.SortedMap;
32 import javax.annotation.Nonnull;
33 import org.opendaylight.yangtools.util.RecursiveObjectLeaker;
34 import org.opendaylight.yangtools.yang.common.QName;
35 import org.opendaylight.yangtools.yang.common.QNameModule;
36 import org.opendaylight.yangtools.yang.common.Revision;
37 import org.opendaylight.yangtools.yang.common.YangVersion;
38 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
39 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
40 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
41 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
42 import org.opendaylight.yangtools.yang.model.repo.api.StatementParserMode;
43 import org.opendaylight.yangtools.yang.parser.spi.meta.DerivedNamespaceBehaviour;
44 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
45 import org.opendaylight.yangtools.yang.parser.spi.meta.MutableStatement;
46 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour;
47 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.NamespaceStorageNode;
48 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
49 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.StorageNodeType;
50 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceNotAvailableException;
51 import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
52 import org.opendaylight.yangtools.yang.parser.spi.meta.SomeModifiersUnresolvedException;
53 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
54 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupportBundle;
55 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
56 import org.opendaylight.yangtools.yang.parser.spi.source.ModulesDeviatedByModules;
57 import org.opendaylight.yangtools.yang.parser.spi.source.ModulesDeviatedByModules.SupportedModules;
58 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
59 import org.opendaylight.yangtools.yang.parser.spi.source.StatementStreamSource;
60 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace;
61 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace.SupportedFeatures;
62 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace;
63 import org.opendaylight.yangtools.yang.parser.spi.validation.ValidationBundlesNamespace.ValidationBundleType;
64 import org.opendaylight.yangtools.yang.parser.stmt.reactor.SourceSpecificContext.PhaseCompletionProgress;
65 import org.slf4j.Logger;
66 import org.slf4j.LoggerFactory;
68 class BuildGlobalContext extends NamespaceStorageSupport implements Registry {
69 private static final Logger LOG = LoggerFactory.getLogger(BuildGlobalContext.class);
71 private static final List<ModelProcessingPhase> PHASE_EXECUTION_ORDER =
72 ImmutableList.<ModelProcessingPhase>builder().add(ModelProcessingPhase.SOURCE_PRE_LINKAGE)
73 .add(ModelProcessingPhase.SOURCE_LINKAGE).add(ModelProcessingPhase.STATEMENT_DEFINITION)
74 .add(ModelProcessingPhase.FULL_DECLARATION).add(ModelProcessingPhase.EFFECTIVE_MODEL).build();
76 private final Table<YangVersion, QName, StatementDefinitionContext<?, ?, ?>> definitions = HashBasedTable.create();
77 private final Map<QName, StatementDefinitionContext<?, ?, ?>> modelDefinedStmtDefs = new HashMap<>();
78 private final Map<Class<?>, NamespaceBehaviourWithListeners<?, ?, ?>> supportedNamespaces = new HashMap<>();
79 private final List<MutableStatement> mutableStatementsToSeal = new ArrayList<>();
80 private final Map<ModelProcessingPhase, StatementSupportBundle> supports;
81 private final Set<SourceSpecificContext> sources = new HashSet<>();
82 private final Set<YangVersion> supportedVersions;
83 private final boolean enabledSemanticVersions;
85 private Set<SourceSpecificContext> libSources = new HashSet<>();
86 private ModelProcessingPhase currentPhase = ModelProcessingPhase.INIT;
87 private ModelProcessingPhase finishedPhase = ModelProcessingPhase.INIT;
89 BuildGlobalContext(final Map<ModelProcessingPhase, StatementSupportBundle> supports,
90 final Map<ValidationBundleType, Collection<?>> supportedValidation,
91 final StatementParserMode statementParserMode) {
92 this.supports = requireNonNull(supports, "BuildGlobalContext#supports cannot be null");
94 switch (statementParserMode) {
96 enabledSemanticVersions = false;
99 enabledSemanticVersions = true;
102 throw new IllegalArgumentException("Unhandled parser mode " + statementParserMode);
105 for (final Entry<ValidationBundleType, Collection<?>> validationBundle : supportedValidation.entrySet()) {
106 addToNs(ValidationBundlesNamespace.class, validationBundle.getKey(), validationBundle.getValue());
109 this.supportedVersions = ImmutableSet.copyOf(supports.get(ModelProcessingPhase.INIT).getSupportedVersions());
112 boolean isEnabledSemanticVersioning() {
113 return enabledSemanticVersions;
116 StatementSupportBundle getSupportsForPhase(final ModelProcessingPhase currentPhase) {
117 return supports.get(currentPhase);
120 void addSource(@Nonnull final StatementStreamSource source) {
121 sources.add(new SourceSpecificContext(this, source));
124 void addLibSource(@Nonnull final StatementStreamSource libSource) {
125 checkState(!isEnabledSemanticVersioning(),
126 "Library sources are not supported in semantic version mode currently.");
127 checkState(currentPhase == ModelProcessingPhase.INIT,
128 "Add library source is allowed in ModelProcessingPhase.INIT only");
129 libSources.add(new SourceSpecificContext(this, libSource));
132 void setSupportedFeatures(final Set<QName> supportedFeatures) {
133 addToNs(SupportedFeaturesNamespace.class, SupportedFeatures.SUPPORTED_FEATURES,
134 ImmutableSet.copyOf(supportedFeatures));
137 void setModulesDeviatedByModules(final Map<QNameModule, Set<QNameModule>> modulesDeviatedByModules) {
138 addToNs(ModulesDeviatedByModules.class, SupportedModules.SUPPORTED_MODULES,
139 ImmutableMap.copyOf(modulesDeviatedByModules));
143 public StorageNodeType getStorageNodeType() {
144 return StorageNodeType.GLOBAL;
148 public NamespaceStorageNode getParentNamespaceStorage() {
153 public NamespaceBehaviour.Registry getBehaviourRegistry() {
158 public <K, V, N extends IdentifierNamespace<K, V>> NamespaceBehaviourWithListeners<K, V, N> getNamespaceBehaviour(
159 final Class<N> type) {
160 NamespaceBehaviourWithListeners<?, ?, ?> potential = supportedNamespaces.get(type);
161 if (potential == null) {
162 final NamespaceBehaviour<K, V, N> potentialRaw = supports.get(currentPhase).getNamespaceBehaviour(type);
163 if (potentialRaw != null) {
164 potential = createNamespaceContext(potentialRaw);
165 supportedNamespaces.put(type, potential);
167 throw new NamespaceNotAvailableException("Namespace " + type + " is not available in phase "
172 Verify.verify(type.equals(potential.getIdentifier()));
174 * Safe cast, previous checkState checks equivalence of key from which
175 * type argument are derived
177 return (NamespaceBehaviourWithListeners<K, V, N>) potential;
180 @SuppressWarnings({ "unchecked", "rawtypes" })
181 private <K, V, N extends IdentifierNamespace<K, V>> NamespaceBehaviourWithListeners<K, V, N> createNamespaceContext(
182 final NamespaceBehaviour<K, V, N> potentialRaw) {
183 if (potentialRaw instanceof DerivedNamespaceBehaviour) {
184 final VirtualNamespaceContext derivedContext = new VirtualNamespaceContext(
185 (DerivedNamespaceBehaviour) potentialRaw);
186 getNamespaceBehaviour(((DerivedNamespaceBehaviour) potentialRaw).getDerivedFrom()).addDerivedNamespace(
188 return derivedContext;
190 return new SimpleNamespaceContext<>(potentialRaw);
193 StatementDefinitionContext<?, ?, ?> getStatementDefinition(final YangVersion version, final QName name) {
194 StatementDefinitionContext<?, ?, ?> potential = definitions.get(version, name);
195 if (potential == null) {
196 final StatementSupport<?, ?, ?> potentialRaw = supports.get(currentPhase).getStatementDefinition(version,
198 if (potentialRaw != null) {
199 potential = new StatementDefinitionContext<>(potentialRaw);
200 definitions.put(version, name, potential);
206 StatementDefinitionContext<?, ?, ?> getModelDefinedStatementDefinition(final QName name) {
207 return modelDefinedStmtDefs.get(name);
210 void putModelDefinedStatementDefinition(final QName name, final StatementDefinitionContext<?, ?, ?> def) {
211 modelDefinedStmtDefs.put(name, def);
214 private void executePhases() throws ReactorException {
215 for (final ModelProcessingPhase phase : PHASE_EXECUTION_ORDER) {
217 loadPhaseStatements();
218 completePhaseActions();
223 EffectiveModelContext build() throws ReactorException {
228 EffectiveSchemaContext buildEffective() throws ReactorException {
230 return transformEffective();
233 private EffectiveModelContext transform() {
234 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
235 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
236 for (final SourceSpecificContext source : sources) {
237 rootStatements.add(source.getRoot().buildDeclared());
239 return new EffectiveModelContext(rootStatements);
242 private SomeModifiersUnresolvedException propagateException(final SourceSpecificContext source,
243 final RuntimeException cause) throws SomeModifiersUnresolvedException {
244 final SourceIdentifier sourceId = StmtContextUtils.createSourceIdentifier(source.getRoot());
245 if (!(cause instanceof SourceException)) {
247 * This should not be happening as all our processing should provide SourceExceptions.
248 * We will wrap the exception to provide enough information to identify the problematic model,
249 * but also emit a warning so the offending codepath will get fixed.
251 LOG.warn("Unexpected error processing source {}. Please file an issue with this model attached.",
255 throw new SomeModifiersUnresolvedException(currentPhase, sourceId, cause);
258 @SuppressWarnings("checkstyle:illegalCatch")
259 private EffectiveSchemaContext transformEffective() throws ReactorException {
260 checkState(finishedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
261 final List<DeclaredStatement<?>> rootStatements = new ArrayList<>(sources.size());
262 final List<EffectiveStatement<?, ?>> rootEffectiveStatements = new ArrayList<>(sources.size());
265 for (final SourceSpecificContext source : sources) {
266 final RootStatementContext<?, ?, ?> root = source.getRoot();
268 rootStatements.add(root.buildDeclared());
269 rootEffectiveStatements.add(root.buildEffective());
270 } catch (final RuntimeException ex) {
271 throw propagateException(source, ex);
275 RecursiveObjectLeaker.cleanup();
278 sealMutableStatements();
279 return EffectiveSchemaContext.create(rootStatements, rootEffectiveStatements);
282 private void startPhase(final ModelProcessingPhase phase) {
283 checkState(Objects.equals(finishedPhase, phase.getPreviousPhase()));
284 startPhaseFor(phase, sources);
285 startPhaseFor(phase, libSources);
287 currentPhase = phase;
288 LOG.debug("Global phase {} started", phase);
291 private static void startPhaseFor(final ModelProcessingPhase phase, final Set<SourceSpecificContext> sources) {
292 for (final SourceSpecificContext source : sources) {
293 source.startPhase(phase);
297 private void loadPhaseStatements() throws ReactorException {
298 checkState(currentPhase != null);
299 loadPhaseStatementsFor(sources);
300 loadPhaseStatementsFor(libSources);
303 @SuppressWarnings("checkstyle:illegalCatch")
304 private void loadPhaseStatementsFor(final Set<SourceSpecificContext> sources) throws ReactorException {
305 for (final SourceSpecificContext source : sources) {
307 source.loadStatements();
308 } catch (final RuntimeException ex) {
309 throw propagateException(source, ex);
314 private SomeModifiersUnresolvedException addSourceExceptions(final List<SourceSpecificContext> sourcesToProgress) {
315 boolean addedCause = false;
316 SomeModifiersUnresolvedException buildFailure = null;
317 for (final SourceSpecificContext failedSource : sourcesToProgress) {
318 final Optional<SourceException> optSourceEx = failedSource.failModifiers(currentPhase);
319 if (!optSourceEx.isPresent()) {
323 final SourceException sourceEx = optSourceEx.get();
324 // Workaround for broken logging implementations which ignore
325 // suppressed exceptions
326 final Throwable cause = sourceEx.getCause() != null ? sourceEx.getCause() : sourceEx;
327 if (LOG.isDebugEnabled()) {
328 LOG.error("Failed to parse YANG from source {}", failedSource, sourceEx);
330 LOG.error("Failed to parse YANG from source {}: {}", failedSource, cause.getMessage());
333 final Throwable[] suppressed = sourceEx.getSuppressed();
334 if (suppressed.length > 0) {
335 LOG.error("{} additional errors reported:", suppressed.length);
338 for (final Throwable t : suppressed) {
339 // FIXME: this should be configured in the appender, really
340 if (LOG.isDebugEnabled()) {
341 LOG.error("Error {}: {}", count, t.getMessage(), t);
343 LOG.error("Error {}: {}", count, t.getMessage());
352 final SourceIdentifier sourceId = StmtContextUtils.createSourceIdentifier(failedSource.getRoot());
353 buildFailure = new SomeModifiersUnresolvedException(currentPhase, sourceId, sourceEx);
355 buildFailure.addSuppressed(sourceEx);
361 @SuppressWarnings("checkstyle:illegalCatch")
362 private void completePhaseActions() throws ReactorException {
363 checkState(currentPhase != null);
364 final List<SourceSpecificContext> sourcesToProgress = new ArrayList<>(sources);
365 if (!libSources.isEmpty()) {
366 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
367 "Yang library sources should be empty after ModelProcessingPhase.SOURCE_PRE_LINKAGE, "
368 + "but current phase was %s", currentPhase);
369 sourcesToProgress.addAll(libSources);
372 boolean progressing = true;
373 while (progressing) {
374 // We reset progressing to false.
376 final Iterator<SourceSpecificContext> currentSource = sourcesToProgress.iterator();
377 while (currentSource.hasNext()) {
378 final SourceSpecificContext nextSourceCtx = currentSource.next();
380 final PhaseCompletionProgress sourceProgress = nextSourceCtx.tryToCompletePhase(currentPhase);
381 switch (sourceProgress) {
383 currentSource.remove();
384 // we were able to make progress in computation
394 throw new IllegalStateException("Unsupported phase progress " + sourceProgress);
396 } catch (final RuntimeException ex) {
397 throw propagateException(nextSourceCtx, ex);
402 if (!libSources.isEmpty()) {
403 final Set<SourceSpecificContext> requiredLibs = getRequiredSourcesFromLib();
404 sources.addAll(requiredLibs);
405 libSources = ImmutableSet.of();
407 * We want to report errors of relevant sources only, so any others can
410 sourcesToProgress.retainAll(sources);
413 if (!sourcesToProgress.isEmpty()) {
414 final SomeModifiersUnresolvedException buildFailure = addSourceExceptions(sourcesToProgress);
415 if (buildFailure != null) {
421 private Set<SourceSpecificContext> getRequiredSourcesFromLib() {
422 checkState(currentPhase == ModelProcessingPhase.SOURCE_PRE_LINKAGE,
423 "Required library sources can be collected only in ModelProcessingPhase.SOURCE_PRE_LINKAGE phase,"
424 + " but current phase was %s", currentPhase);
425 final TreeBasedTable<String, Optional<Revision>, SourceSpecificContext> libSourcesTable = TreeBasedTable.create(
426 String::compareTo, Revision::compare);
427 for (final SourceSpecificContext libSource : libSources) {
428 final SourceIdentifier libSourceIdentifier = requireNonNull(libSource.getRootIdentifier());
429 libSourcesTable.put(libSourceIdentifier.getName(), libSourceIdentifier.getRevision(), libSource);
432 final Set<SourceSpecificContext> requiredLibs = new HashSet<>();
433 for (final SourceSpecificContext source : sources) {
434 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, source);
435 removeConflictingLibSources(source, requiredLibs);
440 private void collectRequiredSourcesFromLib(
441 final TreeBasedTable<String, Optional<Revision>, SourceSpecificContext> libSourcesTable,
442 final Set<SourceSpecificContext> requiredLibs, final SourceSpecificContext source) {
443 for (final SourceIdentifier requiredSource : source.getRequiredSources()) {
444 final SourceSpecificContext libSource = getRequiredLibSource(requiredSource, libSourcesTable);
445 if (libSource != null && requiredLibs.add(libSource)) {
446 collectRequiredSourcesFromLib(libSourcesTable, requiredLibs, libSource);
451 private static SourceSpecificContext getRequiredLibSource(final SourceIdentifier requiredSource,
452 final TreeBasedTable<String, Optional<Revision>, SourceSpecificContext> libSourcesTable) {
453 return requiredSource.getRevision().isPresent()
454 ? libSourcesTable.get(requiredSource.getName(), requiredSource.getRevision())
455 : getLatestRevision(libSourcesTable.row(requiredSource.getName()));
458 private static SourceSpecificContext getLatestRevision(final SortedMap<Optional<Revision>,
459 SourceSpecificContext> sourceMap) {
460 return sourceMap != null && !sourceMap.isEmpty() ? sourceMap.get(sourceMap.lastKey()) : null;
463 // removes required library sources which would cause namespace/name conflict with one of the main sources
464 // later in the parsing process. this can happen if we add a parent module or a submodule as a main source
465 // and the same parent module or submodule is added as one of the library sources.
466 // such situation may occur when using the yang-system-test artifact - if a parent module/submodule is specified
467 // as its argument and the same dir is specified as one of the library dirs through -p option).
468 private static void removeConflictingLibSources(final SourceSpecificContext source,
469 final Set<SourceSpecificContext> requiredLibs) {
470 final Iterator<SourceSpecificContext> requiredLibsIter = requiredLibs.iterator();
471 while (requiredLibsIter.hasNext()) {
472 final SourceSpecificContext currentReqSource = requiredLibsIter.next();
473 if (source.getRootIdentifier().equals(currentReqSource.getRootIdentifier())) {
474 requiredLibsIter.remove();
479 private void endPhase(final ModelProcessingPhase phase) {
480 checkState(currentPhase == phase);
481 finishedPhase = currentPhase;
482 LOG.debug("Global phase {} finished", phase);
485 Set<SourceSpecificContext> getSources() {
489 public Set<YangVersion> getSupportedVersions() {
490 return supportedVersions;
493 void addMutableStmtToSeal(final MutableStatement mutableStatement) {
494 mutableStatementsToSeal.add(mutableStatement);
497 void sealMutableStatements() {
498 for (final MutableStatement mutableStatement : mutableStatementsToSeal) {
499 mutableStatement.seal();
501 mutableStatementsToSeal.clear();