/*
* Copyright (c) 2014 Cisco Systems, Inc. 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.dom.adapter;
import static java.util.Objects.requireNonNull;
import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableBiMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterators;
import java.lang.reflect.Method;
import java.util.AbstractMap.SimpleEntry;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import org.opendaylight.mdsal.binding.api.DataTreeIdentifier;
import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeFactory;
import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTreeNode;
import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
import org.opendaylight.mdsal.binding.dom.codec.impl.BindingNormalizedNodeCodecRegistry;
import org.opendaylight.mdsal.binding.dom.codec.impl.MissingSchemaException;
import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
import org.opendaylight.yangtools.yang.binding.BindingMapping;
import org.opendaylight.yangtools.yang.binding.DataContainer;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.binding.Notification;
import org.opendaylight.yangtools.yang.binding.RpcService;
import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
import org.opendaylight.yangtools.yang.common.QNameModule;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
import org.opendaylight.yangtools.yang.model.api.Module;
import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A combinations of {@link BindingCodecTreeFactory} and {@link BindingNormalizedNodeSerializer}, with internal
* caching of instance identifiers.
*
*
* NOTE: this class is non-final to allow controller adapter migration without duplicated code.
*/
public class BindingToNormalizedNodeCodec implements BindingCodecTreeFactory,
BindingNormalizedNodeSerializer, SchemaContextListener, AutoCloseable {
private static final long WAIT_DURATION_SEC = 5;
private static final Logger LOG = LoggerFactory.getLogger(BindingToNormalizedNodeCodec.class);
private final LoadingCache, YangInstanceIdentifier> iiCache = CacheBuilder.newBuilder()
.softValues().build(new CacheLoader, YangInstanceIdentifier>() {
@Override
public YangInstanceIdentifier load(@Nonnull final InstanceIdentifier> key) {
return toYangInstanceIdentifierBlocking(key);
}
});
private final BindingNormalizedNodeCodecRegistry codecRegistry;
private final ClassLoadingStrategy classLoadingStrategy;
private final FutureSchema futureSchema;
public BindingToNormalizedNodeCodec(final ClassLoadingStrategy classLoadingStrategy,
final BindingNormalizedNodeCodecRegistry codecRegistry) {
this(classLoadingStrategy, codecRegistry, false);
}
public BindingToNormalizedNodeCodec(final ClassLoadingStrategy classLoadingStrategy,
final BindingNormalizedNodeCodecRegistry codecRegistry, final boolean waitForSchema) {
this.classLoadingStrategy = Preconditions.checkNotNull(classLoadingStrategy, "classLoadingStrategy");
this.codecRegistry = Preconditions.checkNotNull(codecRegistry, "codecRegistry");
this.futureSchema = FutureSchema.create(WAIT_DURATION_SEC, TimeUnit.SECONDS, waitForSchema);
}
protected YangInstanceIdentifier toYangInstanceIdentifierBlocking(
final InstanceIdentifier extends DataObject> binding) {
try {
return codecRegistry.toYangInstanceIdentifier(binding);
} catch (final MissingSchemaException e) {
waitForSchema(decompose(binding), e);
return codecRegistry.toYangInstanceIdentifier(binding);
}
}
/**
* Translates supplied Binding Instance Identifier into NormalizedNode
* instance identifier.
*
* @param binding
* Binding Instance Identifier
* @return DOM Instance Identifier
* @throws IllegalArgumentException
* If supplied Instance Identifier is not valid.
*/
public final YangInstanceIdentifier toNormalized(final InstanceIdentifier extends DataObject> binding) {
return codecRegistry.toYangInstanceIdentifier(binding);
}
@Override
public final YangInstanceIdentifier toYangInstanceIdentifier(@Nonnull final InstanceIdentifier> binding) {
return codecRegistry.toYangInstanceIdentifier(binding);
}
protected YangInstanceIdentifier toYangInstanceIdentifierCached(final InstanceIdentifier> binding) {
return iiCache.getUnchecked(binding);
}
@Override
public final Entry> toNormalizedNode(
final InstanceIdentifier path, final T data) {
try {
return codecRegistry.toNormalizedNode(path, data);
} catch (final MissingSchemaException e) {
waitForSchema(decompose(path), e);
return codecRegistry.toNormalizedNode(path, data);
}
}
/**
* Converts Binding Map.Entry to DOM Map.Entry.
*
*
* Same as {@link #toNormalizedNode(InstanceIdentifier, DataObject)}.
*
* @param binding Map Entry with InstanceIdentifier as key and DataObject as value.
* @return DOM Map Entry with {@link YangInstanceIdentifier} as key and {@link NormalizedNode}
* as value.
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public final Entry> toNormalizedNode(
final Entry, DataObject> binding) {
return toNormalizedNode((InstanceIdentifier) binding.getKey(), binding.getValue());
}
@Override
public final Entry, DataObject> fromNormalizedNode(@Nonnull final YangInstanceIdentifier path,
final NormalizedNode, ?> data) {
return codecRegistry.fromNormalizedNode(path, data);
}
@Override
public final Notification fromNormalizedNodeNotification(@Nonnull final SchemaPath path,
@Nonnull final ContainerNode data) {
return codecRegistry.fromNormalizedNodeNotification(path, data);
}
@Override
public final DataObject fromNormalizedNodeRpcData(@Nonnull final SchemaPath path,
@Nonnull final ContainerNode data) {
return codecRegistry.fromNormalizedNodeRpcData(path, data);
}
@Override
public final InstanceIdentifier> fromYangInstanceIdentifier(@Nonnull final YangInstanceIdentifier dom) {
return codecRegistry.fromYangInstanceIdentifier(dom);
}
@Override
public final ContainerNode toNormalizedNodeNotification(@Nonnull final Notification data) {
return codecRegistry.toNormalizedNodeNotification(data);
}
@Override
public final ContainerNode toNormalizedNodeRpcData(@Nonnull final DataContainer data) {
return codecRegistry.toNormalizedNodeRpcData(data);
}
/**
* Returns a Binding-Aware instance identifier from normalized
* instance-identifier if it is possible to create representation.
*
*
* Returns Optional.absent for cases where target is mixin node except
* augmentation.
*/
public final Optional> toBinding(final YangInstanceIdentifier normalized)
throws DeserializationException {
try {
return Optional.fromNullable(codecRegistry.fromYangInstanceIdentifier(normalized));
} catch (final IllegalArgumentException e) {
return Optional.absent();
}
}
public final Optional, DataObject>> toBinding(
@Nonnull final Entry> normalized)
throws DeserializationException {
try {
/*
* This cast is required, due to generics behaviour in openjdk / oracle javac.
*
*
* InstanceIdentifier has definition InstanceIdentifier,
* this means '?' is always extends DataObject>. Eclipse compiler
* is able to determine this relationship and treats
* Entry, DataObject> and Entry
* as assignable. However openjdk / oracle javac treats this two types
* as incompatible and issues a compile error.
*
*
* It is safe to lose generic information and cast it to other generic signature.
*/
@SuppressWarnings("unchecked")
final Entry, DataObject> binding = Entry.class.cast(
codecRegistry.fromNormalizedNode(normalized.getKey(), normalized.getValue()));
return Optional.fromNullable(binding);
} catch (final IllegalArgumentException e) {
return Optional.absent();
}
}
@Override
public void onGlobalContextUpdated(final SchemaContext context) {
final BindingRuntimeContext runtimeContext = BindingRuntimeContext.create(classLoadingStrategy, context);
codecRegistry.onBindingRuntimeContextUpdated(runtimeContext);
futureSchema.onRuntimeContextUpdated(runtimeContext);
}
public final Function>, Optional> deserializeFunction(
final InstanceIdentifier path) {
return codecRegistry.deserializeFunction(path);
}
public final BindingNormalizedNodeCodecRegistry getCodecRegistry() {
return codecRegistry;
}
@Override
public void close() {
// NOOP Intentionally
}
public final BindingNormalizedNodeCodecRegistry getCodecFactory() {
return codecRegistry;
}
// FIXME: This should be probably part of Binding Runtime context
public final ImmutableBiMap getRpcMethodToSchemaPath(final Class extends RpcService> key) {
final Module module = getModuleBlocking(key);
final ImmutableBiMap.Builder ret = ImmutableBiMap.builder();
try {
for (final RpcDefinition rpcDef : module.getRpcs()) {
final Method method = findRpcMethod(key, rpcDef);
ret.put(method, rpcDef.getPath());
}
} catch (final NoSuchMethodException e) {
throw new IllegalStateException("Rpc defined in model does not have representation in generated class.", e);
}
return ret.build();
}
protected ImmutableBiMap getRpcMethodToSchema(final Class extends RpcService> key) {
final Module module = getModuleBlocking(key);
final ImmutableBiMap.Builder ret = ImmutableBiMap.builder();
try {
for (final RpcDefinition rpcDef : module.getRpcs()) {
final Method method = findRpcMethod(key, rpcDef);
ret.put(method, rpcDef);
}
} catch (final NoSuchMethodException e) {
throw new IllegalStateException("Rpc defined in model does not have representation in generated class.", e);
}
return ret.build();
}
private Module getModuleBlocking(final Class> modeledClass) {
final QNameModule moduleName = BindingReflections.getQNameModule(modeledClass);
BindingRuntimeContext localRuntimeContext = runtimeContext();
Module module = localRuntimeContext == null ? null :
localRuntimeContext.getSchemaContext().findModule(moduleName).orElse(null);
if (module == null && futureSchema.waitForSchema(moduleName)) {
localRuntimeContext = runtimeContext();
Preconditions.checkState(localRuntimeContext != null, "BindingRuntimeContext is not available.");
module = localRuntimeContext.getSchemaContext().findModule(moduleName).orElse(null);
}
Preconditions.checkState(module != null, "Schema for %s is not available.", modeledClass);
return module;
}
private void waitForSchema(final Collection> binding, final MissingSchemaException exception) {
LOG.warn("Blocking thread to wait for schema convergence updates for {} {}", futureSchema.getDuration(),
futureSchema.getUnit());
if (!futureSchema.waitForSchema(binding)) {
throw exception;
}
}
private Method findRpcMethod(final Class extends RpcService> key, final RpcDefinition rpcDef)
throws NoSuchMethodException {
final String methodName = BindingMapping.getMethodName(rpcDef.getQName());
final Class> inputClz = runtimeContext().getClassForSchema(rpcDef.getInput());
return key.getMethod(methodName, inputClz);
}
@Override
public final BindingCodecTree create(final BindingRuntimeContext context) {
return codecRegistry.create(context);
}
@Override
public final BindingCodecTree create(final SchemaContext context, final Class>... bindingClasses) {
return codecRegistry.create(context, bindingClasses);
}
@Nonnull
protected Entry, BindingCodecTreeNode>> getSubtreeCodec(
final YangInstanceIdentifier domIdentifier) {
final BindingCodecTree currentCodecTree = codecRegistry.getCodecContext();
final InstanceIdentifier> bindingPath = codecRegistry.fromYangInstanceIdentifier(domIdentifier);
Preconditions.checkArgument(bindingPath != null);
/**
* If we are able to deserialize YANG instance identifier, getSubtreeCodec must
* return non-null value.
*/
final BindingCodecTreeNode> codecContext = currentCodecTree.getSubtreeCodec(bindingPath);
return new SimpleEntry<>(bindingPath, codecContext);
}
@SuppressWarnings("unchecked")
public final Set> getNotificationClasses(final Set interested) {
final Set> result = new HashSet<>();
final BindingRuntimeContext runtimeContext = runtimeContext();
for (final NotificationDefinition notification : runtimeContext.getSchemaContext().getNotifications()) {
if (interested.contains(notification.getPath())) {
try {
result.add((Class extends Notification>) runtimeContext.getClassForSchema(notification));
} catch (final IllegalStateException e) {
// Ignore
LOG.warn("Class for {} is currently not known.", notification.getPath(), e);
}
}
}
return result;
}
private BindingRuntimeContext runtimeContext() {
return futureSchema.runtimeContext();
}
private static Collection> decompose(final InstanceIdentifier> path) {
return ImmutableSet.copyOf(Iterators.transform(path.getPathArguments().iterator(), PathArgument::getType));
}
protected NormalizedNode, ?> instanceIdentifierToNode(final YangInstanceIdentifier parentPath) {
return ImmutableNodes.fromInstanceId(runtimeContext().getSchemaContext(), parentPath);
}
public NormalizedNode, ?> getDefaultNodeFor(final YangInstanceIdentifier parentMapPath) {
final BindingCodecTreeNode> mapCodec = requireNonNull(
codecRegistry.getCodecContext().getSubtreeCodec(parentMapPath),
"Codec not found for yang instance identifier: " + parentMapPath);
final WithStatus schema = mapCodec.getSchema();
if (schema instanceof ListSchemaNode) {
final ListSchemaNode castedSchema = (ListSchemaNode) schema;
return castedSchema.isUserOrdered() ? Builders.orderedMapBuilder(castedSchema).build()
: Builders.mapBuilder(castedSchema).build();
}
throw new IllegalArgumentException("Path does not point to list schema node");
}
protected Collection toDOMDataTreeIdentifiers(
final Collection> subtrees) {
return subtrees.stream().map(this::toDOMDataTreeIdentifier).collect(Collectors.toSet());
}
protected DOMDataTreeIdentifier toDOMDataTreeIdentifier(final DataTreeIdentifier> path) {
final YangInstanceIdentifier domPath = toYangInstanceIdentifierBlocking(path.getRootIdentifier());
return new DOMDataTreeIdentifier(path.getDatastoreType(), domPath);
}
}