--- /dev/null
+/*
+ * Copyright (c) 2017 Pantheon Technologies s.r.o. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.mdsal.binding.javav2.runtime.context;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.MoreObjects.ToStringHelper;
+import com.google.common.base.Optional;
+import com.google.common.io.ByteSource;
+import com.google.common.util.concurrent.CheckedFuture;
+import com.google.common.util.concurrent.Futures;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.ref.WeakReference;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import org.opendaylight.mdsal.binding.javav2.generator.api.ClassLoadingStrategy;
+import org.opendaylight.mdsal.binding.javav2.generator.api.ModuleInfoRegistry;
+import org.opendaylight.mdsal.binding.javav2.generator.impl.GeneratedClassLoadingStrategy;
+import org.opendaylight.mdsal.binding.javav2.runtime.reflection.BindingReflections;
+import org.opendaylight.mdsal.binding.javav2.spec.runtime.YangModuleInfo;
+import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
+import org.opendaylight.yangtools.concepts.ObjectRegistration;
+import org.opendaylight.yangtools.util.ClassLoaderUtils;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.api.SchemaContextProvider;
+import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
+import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceException;
+import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
+import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
+import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
+import org.opendaylight.yangtools.yang.parser.repo.YangTextSchemaContextResolver;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Module info context.
+ */
+@Beta
+public class ModuleInfoBackedContext extends GeneratedClassLoadingStrategy
+ implements ModuleInfoRegistry, SchemaContextProvider, SchemaSourceProvider<YangTextSchemaSource> {
+
+ private static final Logger LOG = LoggerFactory.getLogger(ModuleInfoBackedContext.class);
+
+ private final YangTextSchemaContextResolver ctxResolver = YangTextSchemaContextResolver.create("binding-context");
+ private final ConcurrentMap<String, WeakReference<ClassLoader>> packageNameToClassLoader =
+ new ConcurrentHashMap<>();
+ private final ConcurrentMap<SourceIdentifier, YangModuleInfo> sourceIdentifierToModuleInfo =
+ new ConcurrentHashMap<>();
+ private final ClassLoadingStrategy backingLoadingStrategy;
+
+
+ private ModuleInfoBackedContext(final ClassLoadingStrategy loadingStrategy) {
+ this.backingLoadingStrategy = loadingStrategy;
+ }
+
+ /**
+ * Create new module info context.
+ *
+ * @return new module info context
+ */
+ public static ModuleInfoBackedContext create() {
+ return new ModuleInfoBackedContext(getTCCLClassLoadingStrategy());
+ }
+
+ /**
+ * Create new module info context based on specific loading strategy.
+ *
+ * @param loadingStrategy
+ * - specific loading strategy
+ * @return new module info cotext based on specific loading strategy
+ */
+ public static ModuleInfoBackedContext create(final ClassLoadingStrategy loadingStrategy) {
+ return new ModuleInfoBackedContext(loadingStrategy);
+ }
+
+ @Override
+ public Class<?> loadClass(final String fullyQualifiedName) throws ClassNotFoundException {
+ final String modulePackageName = BindingReflections.getModelRootPackageName(fullyQualifiedName);
+ final WeakReference<ClassLoader> classLoaderRef = packageNameToClassLoader.get(modulePackageName);
+ if (classLoaderRef != null) {
+ final ClassLoader classLoader = classLoaderRef.get();
+ if (classLoader != null) {
+ return ClassLoaderUtils.loadClass(classLoader, fullyQualifiedName);
+ }
+ }
+
+ if (backingLoadingStrategy == null) {
+ throw new ClassNotFoundException(fullyQualifiedName);
+ }
+
+ final Class<?> cls = backingLoadingStrategy.loadClass(fullyQualifiedName);
+ if (BindingReflections.isBindingClass(cls)) {
+ resolveModuleInfo(cls);
+ }
+
+ return cls;
+ }
+
+ // TODO finish schema parsing and expose as SchemaService
+ // Unite with current SchemaService
+ // Implement remove ModuleInfo to update SchemaContext
+
+ /**
+ * Resolving of schema context.
+ *
+ * @return optional of schema context
+ */
+ public Optional<SchemaContext> tryToCreateSchemaContext() {
+ return ctxResolver.getSchemaContext();
+ }
+
+ private boolean resolveModuleInfo(final Class<?> cls) {
+ try {
+ return resolveModuleInfo(BindingReflections.getModuleInfo(cls));
+ } catch (final Exception e) {
+ throw new IllegalStateException(String.format("Failed to resolve module information for class %s", cls), e);
+ }
+ }
+
+ private boolean resolveModuleInfo(final YangModuleInfo moduleInfo) {
+
+ final SourceIdentifier identifier = sourceIdentifierFrom(moduleInfo);
+ final YangModuleInfo previous = sourceIdentifierToModuleInfo.putIfAbsent(identifier, moduleInfo);
+ final ClassLoader moduleClassLoader = moduleInfo.getClass().getClassLoader();
+ try {
+ if (previous == null) {
+ final String modulePackageName = moduleInfo.getClass().getPackage().getName();
+ packageNameToClassLoader.putIfAbsent(modulePackageName,
+ new WeakReference<>(moduleClassLoader));
+ ctxResolver.registerSource(toYangTextSource(identifier, moduleInfo));
+ for (final YangModuleInfo importedInfo : moduleInfo.getImportedModules()) {
+ resolveModuleInfo(importedInfo);
+ }
+ } else {
+ return false;
+ }
+ } catch (final Exception e) {
+ LOG.error("Not including {} in YANG sources because of error.", moduleInfo, e);
+ }
+ return true;
+ }
+
+ private static YangTextSchemaSource toYangTextSource(final SourceIdentifier identifier, final YangModuleInfo moduleInfo) {
+ return new YangTextSchemaSource(identifier) {
+
+ @Override
+ public InputStream openStream() throws IOException {
+ return moduleInfo.getModuleSourceStream();
+ }
+
+ @Override
+ protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
+ return toStringHelper;
+ }
+ };
+ }
+
+ private static SourceIdentifier sourceIdentifierFrom(final YangModuleInfo moduleInfo) {
+ return RevisionSourceIdentifier.create(moduleInfo.getName(), Optional.of(moduleInfo.getRevision()));
+ }
+
+ /**
+ * Add new module info into context.
+ *
+ * @param moduleInfos
+ * - new module info
+ */
+ public void addModuleInfos(final Iterable<? extends YangModuleInfo> moduleInfos) {
+ for (final YangModuleInfo yangModuleInfo : moduleInfos) {
+ registerModuleInfo(yangModuleInfo);
+ }
+ }
+
+ @Override
+ public ObjectRegistration<YangModuleInfo> registerModuleInfo(final YangModuleInfo yangModuleInfo) {
+ final YangModuleInfoRegistration registration = new YangModuleInfoRegistration(yangModuleInfo, this);
+ resolveModuleInfo(yangModuleInfo);
+ return registration;
+ }
+
+ @Override public CheckedFuture<? extends YangTextSchemaSource, SchemaSourceException> getSource(
+ final SourceIdentifier sourceIdentifier) {
+ final YangModuleInfo yangModuleInfo = sourceIdentifierToModuleInfo.get(sourceIdentifier);
+
+ if (yangModuleInfo == null) {
+ LOG.debug("Unknown schema source requested: {}, available sources: {}", sourceIdentifier, sourceIdentifierToModuleInfo.keySet());
+ return Futures
+ .immediateFailedCheckedFuture(new SchemaSourceException("Unknown schema source: " + sourceIdentifier));
+ }
+
+ return Futures
+ .immediateCheckedFuture(YangTextSchemaSource.delegateForByteSource(sourceIdentifier, new ByteSource() {
+ @Override public InputStream openStream() throws IOException {
+ return yangModuleInfo.getModuleSourceStream();
+ }
+ }));
+ }
+
+ private static class YangModuleInfoRegistration extends AbstractObjectRegistration<YangModuleInfo> {
+
+ private final ModuleInfoBackedContext context;
+
+ public YangModuleInfoRegistration(final YangModuleInfo instance, final ModuleInfoBackedContext context) {
+ super(instance);
+ this.context = context;
+ }
+
+ @Override
+ protected void removeRegistration() {
+ context.remove(this);
+ }
+
+ }
+
+ private void remove(final YangModuleInfoRegistration registration) {
+ // FIXME implement
+ }
+
+ @Override
+ public SchemaContext getSchemaContext() {
+ final Optional<SchemaContext> contextOptional = tryToCreateSchemaContext();
+ if (contextOptional.isPresent()) {
+ return contextOptional.get();
+ }
+ throw new IllegalStateException("Unable to recreate SchemaContext, error while parsing");
+ }
+}
Code Review / mdsal.git / commitdiff