diff options
author | 2016-07-13 11:52:51 +0200 | |
---|---|---|
committer | 2016-07-21 14:18:59 +0200 | |
commit | d4b205bc665bebffec8545af5c4992327149c9c3 (patch) | |
tree | 980fd2e803397c6bfa1b4be159a60b59d03b860e /v3po/translate-utils/src/main/java/io/fd | |
parent | 74290324e58983057e0a6e5ae37eb7e6a1646207 (diff) |
HONEYCOMB-122 Update reader registry to share similar APIs as writer
+ Extract common registry builder base code
(Reader registry is not flat, so there is not full control over ordering as with writers
but it is sufficient)
+ Split CompositeReader into CompositeReader, SubtreeReader and GenericReader
+ No need to build composite structure in ReaderFactories (registry does that internally)
+ Keep only ReaderCustomizer + ListReaderCustomizer, no root reader (same for writers)
Change-Id: Ic4e5bc96ad47a6cbcada4efcc2209db5c16d2a6c
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Diffstat (limited to 'v3po/translate-utils/src/main/java/io/fd')
23 files changed, 1342 insertions, 565 deletions
diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/AbstractSubtreeManagerRegistryBuilderBuilder.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/AbstractSubtreeManagerRegistryBuilderBuilder.java new file mode 100644 index 000000000..23a66337f --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/AbstractSubtreeManagerRegistryBuilderBuilder.java @@ -0,0 +1,213 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util; + +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableMap; +import com.google.common.collect.Sets; +import io.fd.honeycomb.v3po.translate.ModifiableSubtreeManagerRegistryBuilder; +import io.fd.honeycomb.v3po.translate.SubtreeManager; +import io.fd.honeycomb.v3po.translate.SubtreeManagerRegistryBuilder; +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; +import java.util.Set; +import javax.annotation.Nonnull; +import org.jgrapht.experimental.dag.DirectedAcyclicGraph; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +public abstract class AbstractSubtreeManagerRegistryBuilderBuilder<S extends SubtreeManager<? extends DataObject>, R> + implements ModifiableSubtreeManagerRegistryBuilder<S>, SubtreeManagerRegistryBuilder<R>, AutoCloseable { + + // Using directed acyclic graph to represent the ordering relationships between writers + private final DirectedAcyclicGraph<InstanceIdentifier<?>, Order> + handlersRelations = new DirectedAcyclicGraph<>((sourceVertex, targetVertex) -> new Order()); + private final Map<InstanceIdentifier<?>, S> handlersMap = new HashMap<>(); + + /** + * Add handler without any special relationship to any other type. + */ + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> add(@Nonnull final S handler) { + // Make IID wildcarded just in case + // + the way InstanceIdentifier.create + equals work for Identifiable items is unexpected, meaning updates would + // not be matched to writers in registry + final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(handler.getManagedDataObjectType()); + checkWriterNotPresentYet(targetType); + handlersRelations.addVertex(targetType); + handlersMap.put(targetType, handler); + return this; + } + + /** + * Add handler without any special relationship to any other type. + */ + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> subtreeAdd(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler) { + add(getSubtreeHandler(handledChildren, handler)); + return this; + } + + private void checkWriterNotPresentYet(final InstanceIdentifier<?> targetType) { + Preconditions.checkArgument(!handlersMap.containsKey(targetType), + "Writer for type: %s already present: %s", targetType, handlersMap.get(targetType)); + } + + /** + * Add handler with relationship: to be executed before handler handling relatedType. + */ + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> addBefore(@Nonnull final S handler, + @Nonnull final InstanceIdentifier<?> relatedType) { + final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(handler.getManagedDataObjectType()); + final InstanceIdentifier<?> wildcardedRelatedType = RWUtils.makeIidWildcarded(relatedType); + checkWriterNotPresentYet(targetType); + handlersRelations.addVertex(targetType); + handlersRelations.addVertex(wildcardedRelatedType); + addEdge(targetType, wildcardedRelatedType); + handlersMap.put(targetType, handler); + return this; + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> addBefore(@Nonnull final S handler, + @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { + final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(handler.getManagedDataObjectType()); + checkWriterNotPresentYet(targetType); + handlersRelations.addVertex(targetType); + relatedTypes.stream() + .map(RWUtils::makeIidWildcarded) + .forEach(handlersRelations::addVertex); + relatedTypes.stream() + .map(RWUtils::makeIidWildcarded) + .forEach(type -> addEdge(targetType, type)); + handlersMap.put(targetType, handler); + return this; + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> subtreeAddBefore( + @Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler, + @Nonnull final InstanceIdentifier<?> relatedType) { + return addBefore(getSubtreeHandler(handledChildren, handler), relatedType); + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> subtreeAddBefore( + @Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler, + @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { + return addBefore(getSubtreeHandler(handledChildren, handler), relatedTypes); + } + + protected abstract S getSubtreeHandler(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler); + + /** + * Add handler with relationship: to be executed after handler handling relatedType. + */ + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> addAfter(@Nonnull final S handler, + @Nonnull final InstanceIdentifier<?> relatedType) { + final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(handler.getManagedDataObjectType()); + final InstanceIdentifier<?> wildcardedRelatedType = RWUtils.makeIidWildcarded(relatedType); + checkWriterNotPresentYet(targetType); + handlersRelations.addVertex(targetType); + handlersRelations.addVertex(wildcardedRelatedType); + // set edge to indicate before relationship, just reversed + addEdge(wildcardedRelatedType, targetType); + handlersMap.put(targetType, handler); + return this; + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> addAfter(@Nonnull final S handler, + @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { + final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(handler.getManagedDataObjectType()); + checkWriterNotPresentYet(targetType); + handlersRelations.addVertex(targetType); + relatedTypes.stream() + .map(RWUtils::makeIidWildcarded) + .forEach(handlersRelations::addVertex); + // set edge to indicate before relationship, just reversed + relatedTypes.stream() + .map(RWUtils::makeIidWildcarded) + .forEach(type -> addEdge(type, targetType)); + handlersMap.put(targetType, handler); + return this; + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> subtreeAddAfter( + @Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler, + @Nonnull final InstanceIdentifier<?> relatedType) { + return addAfter(getSubtreeHandler(handledChildren, handler), relatedType); + } + + @Override + public AbstractSubtreeManagerRegistryBuilderBuilder<S, R> subtreeAddAfter( + @Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final S handler, + @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { + return addAfter(getSubtreeHandler(handledChildren, handler), relatedTypes); + } + + + private void addEdge(final InstanceIdentifier<?> targetType, + final InstanceIdentifier<?> relatedType) { + try { + handlersRelations.addDagEdge(targetType, relatedType); + } catch (DirectedAcyclicGraph.CycleFoundException e) { + throw new IllegalArgumentException(String.format( + "Unable to add writer with relation: %s -> %s. Loop detected", targetType, relatedType), e); + } + } + + protected ImmutableMap<InstanceIdentifier<?>, S> getMappedHandlers() { + final ImmutableMap.Builder<InstanceIdentifier<?>, S> builder = ImmutableMap.builder(); + // Iterate writer types according to their relationships from graph + handlersRelations.iterator() + .forEachRemaining(writerType -> { + // There might be types stored just for relationship sake, no real writer, ignoring those + if (handlersMap.containsKey(writerType)) { + builder.put(writerType, handlersMap.get(writerType)); + } + }); + + // TODO we could optimize subtree handlers, if there is a dedicated handler for a node managed by a subtree + // handler, recreate the subtree handler with a subset of handled child nodes + // This way it is not necessary to change the configuration of subtree writer, just to add a dedicated child + // writer. This will be needed if we ever switch to annotations for reader/writer hierarchy initialization + + return builder.build(); + } + + @Override + public void close() throws Exception { + handlersMap.clear(); + // Wrap sets into another set to avoid concurrent modification ex in graph + handlersRelations.removeAllEdges(Sets.newHashSet(handlersRelations.edgeSet())); + handlersRelations.removeAllVertices(Sets.newHashSet(handlersRelations.vertexSet())); + } + + // Represents edges in graph + private class Order {} +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java index 55ae9ecf0..ba9d8e16f 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/RWUtils.java @@ -22,7 +22,6 @@ import com.google.common.base.Predicate; import com.google.common.collect.Iterables; import com.google.common.collect.Maps; import io.fd.honeycomb.v3po.translate.SubtreeManager; -import io.fd.honeycomb.v3po.translate.read.ChildReader; import java.util.Collection; import java.util.Collections; import java.util.List; @@ -32,7 +31,6 @@ import java.util.stream.Collectors; import java.util.stream.StreamSupport; import javax.annotation.Nonnull; import org.opendaylight.yangtools.yang.binding.Augmentation; -import org.opendaylight.yangtools.yang.binding.ChildOf; import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.Identifiable; import org.opendaylight.yangtools.yang.binding.Identifier; @@ -75,24 +73,6 @@ public final class RWUtils { return Iterables.get(pathArguments, i + 1); } - public static <T> List<ChildReader<? extends ChildOf<T>>> emptyChildReaderList() { - return Collections.emptyList(); - } - - public static <T> List<ChildReader<? extends Augmentation<T>>> emptyAugReaderList() { - return Collections.emptyList(); - } - - public static <T> List<ChildReader<? extends Augmentation<T>>> singletonAugReaderList( - ChildReader<? extends Augmentation<T>> item) { - return Collections.<ChildReader<? extends Augmentation<T>>>singletonList(item); - } - - public static <T> List<ChildReader<? extends ChildOf<T>>> singletonChildReaderList( - ChildReader<? extends ChildOf<T>> item) { - return Collections.<ChildReader<? extends ChildOf<T>>>singletonList(item); - } - /** * Replace last item in ID with a provided IdentifiableItem of the same type */ @@ -170,25 +150,16 @@ public final class RWUtils { } }; - @SuppressWarnings("unchecked") - public static <D extends DataObject> InstanceIdentifier<D> appendTypeToId( - final InstanceIdentifier<? extends DataObject> parentId, final InstanceIdentifier<D> type) { - Preconditions.checkArgument(!parentId.contains(type), - "Unexpected InstanceIdentifier %s, already contains %s", parentId, type); - final InstanceIdentifier.PathArgument t = Iterables.getOnlyElement(type.getPathArguments()); - return (InstanceIdentifier<D>) InstanceIdentifier.create(Iterables.concat( - parentId.getPathArguments(), Collections.singleton(t))); - } - /** * Transform a keyed instance identifier into a wildcarded one. */ - public static InstanceIdentifier<?> makeIidWildcarded(final InstanceIdentifier<?> id) { + @SuppressWarnings("unchecked") + public static <D extends DataObject> InstanceIdentifier<D> makeIidWildcarded(final InstanceIdentifier<D> id) { final List<InstanceIdentifier.PathArgument> transformedPathArguments = StreamSupport.stream(id.getPathArguments().spliterator(), false) .map(RWUtils::cleanPathArgumentFromKeys) .collect(Collectors.toList()); - return InstanceIdentifier.create(transformedPathArguments); + return (InstanceIdentifier<D>) InstanceIdentifier.create(transformedPathArguments); } private static InstanceIdentifier.PathArgument cleanPathArgumentFromKeys(final InstanceIdentifier.PathArgument pathArgument) { diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/TransactionMappingContext.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/TransactionMappingContext.java index 60f4282f5..6abc3b1eb 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/TransactionMappingContext.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/TransactionMappingContext.java @@ -14,7 +14,7 @@ * limitations under the License. */ -package io.fd.honeycomb.v3po.translate.util.write; +package io.fd.honeycomb.v3po.translate.util; import com.google.common.base.Optional; import com.google.common.util.concurrent.CheckedFuture; @@ -28,7 +28,7 @@ import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; /** - * Binding Transaction backed mapping context + * Binding Transaction backed mapping context. */ public class TransactionMappingContext implements MappingContext { diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/AbstractGenericReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/AbstractGenericReader.java new file mode 100644 index 000000000..9bfbc2450 --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/AbstractGenericReader.java @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read; + +import static com.google.common.base.Preconditions.checkArgument; + +import com.google.common.annotations.Beta; +import com.google.common.base.Optional; +import io.fd.honeycomb.v3po.translate.read.ReadContext; +import io.fd.honeycomb.v3po.translate.read.ReadFailedException; +import io.fd.honeycomb.v3po.translate.read.Reader; +import io.fd.honeycomb.v3po.translate.util.RWUtils; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +@Beta +public abstract class AbstractGenericReader<D extends DataObject, B extends Builder<D>> implements Reader<D, B> { + + private static final Logger LOG = LoggerFactory.getLogger(AbstractGenericReader.class); + + private final InstanceIdentifier<D> instanceIdentifier; + + protected AbstractGenericReader(final InstanceIdentifier<D> managedDataObjectType) { + this.instanceIdentifier = RWUtils.makeIidWildcarded(managedDataObjectType); + } + + @Nonnull + @Override + public final InstanceIdentifier<D> getManagedDataObjectType() { + return instanceIdentifier; + } + + /** + * @param id {@link InstanceIdentifier} pointing to current node. In case of keyed list, key must be present. + * + */ + protected Optional<D> readCurrent(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final ReadContext ctx) throws ReadFailedException { + LOG.debug("{}: Reading current: {}", this, id); + final B builder = getBuilder(id); + // Cache empty value to determine if anything has changed later TODO cache in a field + final D emptyValue = builder.build(); + + LOG.trace("{}: Reading current attributes", this); + readCurrentAttributes(id, builder, ctx); + + // Need to check whether anything was filled in to determine if data is present or not. + final D built = builder.build(); + final Optional<D> read = built.equals(emptyValue) + ? Optional.absent() + : Optional.of(built); + + LOG.debug("{}: Current node read successfully. Result: {}", this, read); + return read; + } + + @Nonnull + @Override + @SuppressWarnings("unchecked") + public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id, + @Nonnull final ReadContext ctx) + throws ReadFailedException { + LOG.trace("{}: Reading : {}", this, id); + checkArgument(id.getTargetType().equals(getManagedDataObjectType().getTargetType())); + return readCurrent((InstanceIdentifier<D>) id, ctx); + } + + @Override + public String toString() { + return String.format("Reader[%s]", getManagedDataObjectType().getTargetType().getSimpleName()); + } +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/BindingBrokerReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/BindingBrokerReader.java index 58695cf8b..68aa3956e 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/BindingBrokerReader.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/BindingBrokerReader.java @@ -25,23 +25,29 @@ import javax.annotation.Nonnull; import org.opendaylight.controller.md.sal.binding.api.DataBroker; import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction; import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType; +import org.opendaylight.yangtools.concepts.Builder; import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; /** - * Simple DataBroker backed reader allowing to delegate reads to different brokers + * Simple DataBroker backed reader allowing to delegate reads to different brokers. */ -public final class BindingBrokerReader<D extends DataObject> implements Reader<D> { +public final class BindingBrokerReader<D extends DataObject, B extends Builder<D>> + implements Reader<D, B>, AutoCloseable { private final InstanceIdentifier<D> instanceIdentifier; private final DataBroker dataBroker; private final LogicalDatastoreType datastoreType; + private final ReflexiveReaderCustomizer<D, B> reflexiveReaderCustomizer; - public BindingBrokerReader(final Class<D> managedDataObjectType, final DataBroker dataBroker, - final LogicalDatastoreType datastoreType) { + public BindingBrokerReader(final InstanceIdentifier<D> instanceIdentifier, + final DataBroker dataBroker, + final LogicalDatastoreType datastoreType, + final Class<B> builderClass) { + this.reflexiveReaderCustomizer = new ReflexiveReaderCustomizer<>(instanceIdentifier.getTargetType(), builderClass); + this.instanceIdentifier = instanceIdentifier; this.dataBroker = dataBroker; this.datastoreType = datastoreType; - this.instanceIdentifier = InstanceIdentifier.create(managedDataObjectType); } @Nonnull @@ -59,9 +65,32 @@ public final class BindingBrokerReader<D extends DataObject> implements Reader<D } } + @Override + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final D readValue) { + reflexiveReaderCustomizer.merge(parentBuilder, readValue); + } + + @Nonnull + @Override + public B getBuilder(final InstanceIdentifier<D> id) { + return reflexiveReaderCustomizer.getBuilder(id); + } + + @Override + public void readCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final B builder, + @Nonnull final ReadContext ctx) throws ReadFailedException { + throw new UnsupportedOperationException("Not supported"); + } + @Nonnull @Override public InstanceIdentifier<D> getManagedDataObjectType() { return instanceIdentifier; } + + @Override + public void close() throws Exception { + // Noop + } } diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/CloseableReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/CloseableReader.java deleted file mode 100644 index 5492062e3..000000000 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/CloseableReader.java +++ /dev/null @@ -1,60 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package io.fd.honeycomb.v3po.translate.util.read; - -import com.google.common.base.Optional; -import io.fd.honeycomb.v3po.translate.read.ReadContext; -import io.fd.honeycomb.v3po.translate.read.ReadFailedException; -import io.fd.honeycomb.v3po.translate.read.Reader; -import javax.annotation.Nonnull; -import org.opendaylight.yangtools.yang.binding.DataObject; -import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; - -/** - * Closeable wrapper for a reader - */ -public final class CloseableReader<D extends DataObject> implements Reader<D>, AutoCloseable { - - private Reader<D> compositeRootReader; - - public CloseableReader(@Nonnull final Reader<D> compositeRootReader) { - this.compositeRootReader = compositeRootReader; - } - - @Nonnull - @Override - public Optional<? extends DataObject> read(@Nonnull InstanceIdentifier<? extends DataObject> id, - @Nonnull ReadContext ctx) throws ReadFailedException { - return compositeRootReader.read(id, ctx); - } - - @Nonnull - @Override - public InstanceIdentifier<D> getManagedDataObjectType() { - return compositeRootReader.getManagedDataObjectType(); - } - - @Override - public String toString() { - return compositeRootReader.toString(); - } - - @Override - public void close() throws Exception { - //NOOP - } -} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/KeepaliveReaderWrapper.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/KeepaliveReaderWrapper.java index d59111faa..d782bcc7f 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/KeepaliveReaderWrapper.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/KeepaliveReaderWrapper.java @@ -14,15 +14,15 @@ * limitations under the License. */ -package io.fd.honeycomb.v3po.translate.util; +package io.fd.honeycomb.v3po.translate.util.read; import com.google.common.base.Optional; import com.google.common.base.Preconditions; import io.fd.honeycomb.v3po.translate.MappingContext; import io.fd.honeycomb.v3po.translate.ModificationCache; -import io.fd.honeycomb.v3po.translate.read.ChildReader; import io.fd.honeycomb.v3po.translate.read.ReadContext; import io.fd.honeycomb.v3po.translate.read.ReadFailedException; +import io.fd.honeycomb.v3po.translate.read.Reader; import java.io.Closeable; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.ScheduledFuture; @@ -39,13 +39,13 @@ import org.slf4j.LoggerFactory; * Reader wrapper that periodically invokes a read to determine whether reads are still fully functional. * In case a specific error occurs, Keep-alive failure listener gets notified. */ -public final class KeepaliveReaderWrapper<D extends DataObject> implements ChildReader<D>, Runnable, Closeable { +public final class KeepaliveReaderWrapper<D extends DataObject, B extends Builder<D>> implements Reader<D, B>, Runnable, Closeable { private static final Logger LOG = LoggerFactory.getLogger(KeepaliveReaderWrapper.class); private static final NoopReadContext CTX = new NoopReadContext(); - private final ChildReader<D> delegate; + private final Reader<D, B> delegate; private final Class<? extends Exception> exceptionType; private final KeepaliveFailureListener failureListener; private final ScheduledFuture<?> scheduledFuture; @@ -59,7 +59,7 @@ public final class KeepaliveReaderWrapper<D extends DataObject> implements Child * @param delayInSeconds number of seconds to wait between keepalive calls * @param failureListener listener to be called whenever a keepalive failure is detected */ - public KeepaliveReaderWrapper(@Nonnull final ChildReader<D> delegate, + public KeepaliveReaderWrapper(@Nonnull final Reader<D, B> delegate, @Nonnull final ScheduledExecutorService executor, @Nonnull final Class<? extends Exception> exception, @Nonnegative final int delayInSeconds, @@ -73,17 +73,25 @@ public final class KeepaliveReaderWrapper<D extends DataObject> implements Child } @Nonnull - @Override - public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id, + public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier id, @Nonnull final ReadContext ctx) throws ReadFailedException { return delegate.read(id, ctx); } - @Override - public void read(@Nonnull final InstanceIdentifier<? extends DataObject> id, - @Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final ReadContext ctx) - throws ReadFailedException { - delegate.read(id, parentBuilder, ctx); + public void readCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final B builder, + @Nonnull final ReadContext ctx) throws ReadFailedException { + delegate.readCurrentAttributes(id, builder, ctx); + } + + @Nonnull + public B getBuilder(final InstanceIdentifier<D> id) { + return delegate.getBuilder(id); + } + + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, + @Nonnull final D readValue) { + delegate.merge(parentBuilder, readValue); } @Nonnull @@ -99,7 +107,7 @@ public final class KeepaliveReaderWrapper<D extends DataObject> implements Child final Optional<? extends DataObject> read = read(delegate.getManagedDataObjectType(), CTX); LOG.debug("Keepalive executed successfully with data: {}", read); } catch (Exception e) { - if(exceptionType.isAssignableFrom(e.getClass())) { + if (exceptionType.isAssignableFrom(e.getClass())) { LOG.warn("Keepalive failed. Notifying listener", e); failureListener.onKeepaliveFailure(); } diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/NoopReaderCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/NoopReaderCustomizer.java index cf494efbe..a4de9febb 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/NoopReaderCustomizer.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/NoopReaderCustomizer.java @@ -18,13 +18,13 @@ package io.fd.honeycomb.v3po.translate.util.read; import io.fd.honeycomb.v3po.translate.read.ReadContext; import io.fd.honeycomb.v3po.translate.read.ReadFailedException; -import io.fd.honeycomb.v3po.translate.spi.read.RootReaderCustomizer; +import io.fd.honeycomb.v3po.translate.spi.read.ReaderCustomizer; import org.opendaylight.yangtools.concepts.Builder; import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; public abstract class NoopReaderCustomizer<C extends DataObject, B extends Builder<C>> implements - RootReaderCustomizer<C, B> { + ReaderCustomizer<C, B> { @Override public void readCurrentAttributes(InstanceIdentifier<C> id, final B builder, final ReadContext context) throws diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveAugmentReaderCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveAugmentReaderCustomizer.java deleted file mode 100644 index 38107edff..000000000 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveAugmentReaderCustomizer.java +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package io.fd.honeycomb.v3po.translate.util.read; - -import static com.google.common.base.Preconditions.checkArgument; - -import com.google.common.base.Optional; -import com.google.common.collect.Lists; -import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer; -import io.fd.honeycomb.v3po.translate.util.ReflectionUtils; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import org.opendaylight.yangtools.concepts.Builder; -import org.opendaylight.yangtools.yang.binding.Augmentation; -import org.opendaylight.yangtools.yang.binding.DataObject; - -/** - * Might be slow ! - */ -public class ReflexiveAugmentReaderCustomizer<C extends DataObject, B extends Builder<C>> - extends ReflexiveRootReaderCustomizer<C, B> - implements ChildReaderCustomizer<C,B> { - - private final Class<C> augType; - - public ReflexiveAugmentReaderCustomizer(final Class<B> builderClass, final Class<C> augType) { - super(builderClass); - this.augType = augType; - } - - @Override - public void merge(final Builder<? extends DataObject> parentBuilder, final C readValue) { - final Optional<Method> method = - ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "addAugmentation", - Lists.newArrayList(Class.class, Augmentation.class), parentBuilder.getClass()); - - checkArgument(method.isPresent(), "Not possible to add augmentations to builder: %s", parentBuilder); - try { - method.get().invoke(parentBuilder, augType, readValue); - } catch (IllegalAccessException | InvocationTargetException e) { - throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e); - } - } - -} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveChildReaderCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveChildReaderCustomizer.java deleted file mode 100644 index 3d5f9f4e8..000000000 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveChildReaderCustomizer.java +++ /dev/null @@ -1,57 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package io.fd.honeycomb.v3po.translate.util.read; - -import com.google.common.base.Optional; -import com.google.common.base.Preconditions; -import io.fd.honeycomb.v3po.translate.util.ReflectionUtils; -import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer; -import java.lang.reflect.InvocationTargetException; -import java.lang.reflect.Method; -import java.util.Collections; -import org.opendaylight.yangtools.concepts.Builder; -import org.opendaylight.yangtools.yang.binding.DataObject; - -/** - * Might be slow ! - */ -public class ReflexiveChildReaderCustomizer<C extends DataObject, B extends Builder<C>> - extends ReflexiveRootReaderCustomizer<C, B> - implements ChildReaderCustomizer<C,B> { - - public ReflexiveChildReaderCustomizer(final Class<B> builderClass) { - super(builderClass); - } - - // TODO Could be just a default implementation in interface (making this a mixin) - - @Override - public void merge(final Builder<? extends DataObject> parentBuilder, final C readValue) { - final Optional<Method> method = - ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "set", - Collections.<Class<?>>singletonList(readValue.getClass()), parentBuilder.getClass()); - - Preconditions.checkArgument(method.isPresent(), "Unable to set %s to %s", readValue, parentBuilder); - - try { - method.get().invoke(parentBuilder, readValue); - } catch (IllegalAccessException | InvocationTargetException e) { - throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e); - } - } - -} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReader.java new file mode 100644 index 000000000..51725e728 --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReader.java @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read; + +import io.fd.honeycomb.v3po.translate.read.ReadContext; +import io.fd.honeycomb.v3po.translate.read.ReadFailedException; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +/** + * Reader that performs no read operation on its own, just fills in the hierarchy. + * <p/> + * Might be slow due to reflection ! + */ +public final class ReflexiveReader<C extends DataObject, B extends Builder<C>> extends AbstractGenericReader<C, B> { + + private final ReflexiveReaderCustomizer<C, B> customizer; + + public ReflexiveReader(final InstanceIdentifier<C> identifier, final Class<B> builderClass) { + super(identifier); + this.customizer = new ReflexiveReaderCustomizer<>(identifier.getTargetType(), builderClass); + } + + @Override + public void readCurrentAttributes(@Nonnull final InstanceIdentifier<C> id, @Nonnull final B builder, + @Nonnull final ReadContext ctx) + throws ReadFailedException { + customizer.readCurrentAttributes(id, builder, ctx); + } + + @Nonnull + @Override + public B getBuilder(final InstanceIdentifier<C> id) { + return customizer.getBuilder(id); + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final C readValue) { + customizer.merge(parentBuilder, readValue); + } +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReaderCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReaderCustomizer.java new file mode 100644 index 000000000..f9efca3dc --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveReaderCustomizer.java @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read; + +import static com.google.common.base.Preconditions.checkArgument; + +import com.google.common.base.Optional; +import com.google.common.collect.Lists; +import io.fd.honeycomb.v3po.translate.util.ReflectionUtils; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.Collections; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.Augmentation; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +/** + * Might be slow ! + */ +final class ReflexiveReaderCustomizer<C extends DataObject, B extends Builder<C>> extends NoopReaderCustomizer<C, B> { + + private final Class<C> typeClass; + private final Class<B> builderClass; + + public ReflexiveReaderCustomizer(final Class<C> typeClass, final Class<B> builderClass) { + this.typeClass = typeClass; + this.builderClass = builderClass; + } + + protected Class<C> getTypeClass() { + return typeClass; + } + + protected Class<B> getBuilderClass() { + return builderClass; + } + + @Nonnull + @Override + public B getBuilder(@Nonnull InstanceIdentifier<C> id) { + try { + return builderClass.newInstance(); + } catch (InstantiationException | IllegalAccessException e) { + throw new IllegalStateException("Unable to instantiate " + builderClass, e); + } + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final C readValue) { + if (Augmentation.class.isAssignableFrom(typeClass)) { + mergeAugmentation(parentBuilder, (Class<? extends Augmentation<?>>) typeClass, readValue); + } else { + mergeRegular(parentBuilder, readValue); + } + } + + private static void mergeRegular(@Nonnull final Builder<? extends DataObject> parentBuilder, + @Nonnull final DataObject readValue) { + final Optional<Method> method = + ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "set", + Collections.singletonList(readValue.getClass()), parentBuilder.getClass()); + + checkArgument(method.isPresent(), "Unable to set %s to %s", readValue, parentBuilder); + + try { + method.get().invoke(parentBuilder, readValue); + } catch (IllegalAccessException | InvocationTargetException e) { + throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e); + } + } + + private static void mergeAugmentation(@Nonnull final Builder<? extends DataObject> parentBuilder, + @Nonnull final Class<? extends Augmentation<?>> typeClass, + @Nonnull final DataObject readValue) { + final Optional<Method> method = + ReflectionUtils.findMethodReflex(parentBuilder.getClass(), "addAugmentation", + Lists.newArrayList(Class.class, Augmentation.class), parentBuilder.getClass()); + + checkArgument(method.isPresent(), "Not possible to add augmentations to builder: %s", parentBuilder); + try { + method.get().invoke(parentBuilder, typeClass, readValue); + } catch (IllegalAccessException | InvocationTargetException e) { + throw new IllegalArgumentException("Unable to set " + readValue + " to " + parentBuilder, e); + } + } + +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveRootReaderCustomizer.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveRootReaderCustomizer.java deleted file mode 100644 index 029f359bb..000000000 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/ReflexiveRootReaderCustomizer.java +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package io.fd.honeycomb.v3po.translate.util.read; - -import org.opendaylight.yangtools.concepts.Builder; -import org.opendaylight.yangtools.yang.binding.DataObject; -import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; - -/** - * Might be slow ! - */ -public class ReflexiveRootReaderCustomizer<C extends DataObject, B extends Builder<C>> extends NoopReaderCustomizer<C, B> { - - private final Class<B> builderClass; - - public ReflexiveRootReaderCustomizer(final Class<B> builderClass) { - this.builderClass = builderClass; - } - - @Override - public B getBuilder(InstanceIdentifier<C> id) { - try { - return builderClass.newInstance(); - } catch (InstantiationException | IllegalAccessException e) { - throw new IllegalStateException("Unable to instantiate " + builderClass, e); - } - } -} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReader.java new file mode 100644 index 000000000..64ecaf095 --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReader.java @@ -0,0 +1,192 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read.registry; + +import static com.google.common.base.Preconditions.checkArgument; + +import com.google.common.base.Optional; +import com.google.common.collect.ImmutableMap; +import com.google.common.collect.Iterables; +import io.fd.honeycomb.v3po.translate.read.ListReader; +import io.fd.honeycomb.v3po.translate.read.ReadContext; +import io.fd.honeycomb.v3po.translate.read.ReadFailedException; +import io.fd.honeycomb.v3po.translate.read.Reader; +import io.fd.honeycomb.v3po.translate.util.RWUtils; +import io.fd.honeycomb.v3po.translate.util.read.AbstractGenericReader; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.Identifiable; +import org.opendaylight.yangtools.yang.binding.Identifier; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +class CompositeReader<D extends DataObject, B extends Builder<D>> extends AbstractGenericReader<D, B> { + + private static final Logger LOG = LoggerFactory.getLogger(CompositeReader.class); + + private final Reader<D, B> delegate; + private final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders; + + private CompositeReader(final Reader<D, B> reader, + final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders) { + super(reader.getManagedDataObjectType()); + this.delegate = reader; + this.childReaders = childReaders; + } + + @SuppressWarnings("unchecked") + public static <D extends DataObject> InstanceIdentifier<D> appendTypeToId( + final InstanceIdentifier<? extends DataObject> parentId, final InstanceIdentifier<D> type) { + final InstanceIdentifier.PathArgument t = new InstanceIdentifier.Item<>(type.getTargetType()); + return (InstanceIdentifier<D>) InstanceIdentifier.create(Iterables.concat( + parentId.getPathArguments(), Collections.singleton(t))); + } + + @Nonnull + @Override + public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id, + @Nonnull final ReadContext ctx) throws ReadFailedException { + if (shouldReadCurrent(id)) { + return readCurrent((InstanceIdentifier<D>) id, ctx); + } else if (shouldDelegateToChild(id)) { + return readSubtree(id, ctx); + } else { + // Fallback + return delegate.read(id, ctx); + } + } + + private boolean shouldReadCurrent(@Nonnull final InstanceIdentifier<? extends DataObject> id) { + return id.getTargetType().equals(getManagedDataObjectType().getTargetType()); + } + + private boolean shouldDelegateToChild(@Nonnull final InstanceIdentifier<? extends DataObject> id) { + return childReaders.containsKey(RWUtils.getNextId(id, getManagedDataObjectType()).getType()); + } + + private Optional<? extends DataObject> readSubtree(final InstanceIdentifier<? extends DataObject> id, + final ReadContext ctx) throws ReadFailedException { + final InstanceIdentifier.PathArgument nextId = RWUtils.getNextId(id, getManagedDataObjectType()); + final Reader<?, ? extends Builder<?>> nextReader = childReaders.get(nextId.getType()); + checkArgument(nextReader != null, "Unable to read: %s. No delegate present, available readers at next level: %s", + id, childReaders.keySet()); + return nextReader.read(id, ctx); + } + + @SuppressWarnings("unchecked") + private void readChildren(final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx, final B builder) + throws ReadFailedException { + for (Reader child : childReaders.values()) { + LOG.debug("{}: Reading child node from: {}", this, child); + final InstanceIdentifier childId = appendTypeToId(id, child.getManagedDataObjectType()); + + if (child instanceof ListReader) { + final List<? extends DataObject> list = ((ListReader) child).readList(childId, ctx); + ((ListReader) child).merge(builder, list); + } else { + final Optional<? extends DataObject> read = child.read(childId, ctx); + if (read.isPresent()) { + child.merge(builder, read.get()); + } + } + } + } + + @Override + public void readCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final B builder, + @Nonnull final ReadContext ctx) + throws ReadFailedException { + delegate.readCurrentAttributes(id, builder, ctx); + readChildren(id, ctx, builder); + } + + @Nonnull + @Override + public B getBuilder(final InstanceIdentifier<D> id) { + return delegate.getBuilder(id); + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final D readValue) { + delegate.merge(parentBuilder, readValue); + } + + /** + * Wrap a Reader as a Composite Reader. + */ + static <D extends DataObject, B extends Builder<D>> Reader<D, B> createForReader( + @Nonnull final Reader<D, B> reader, + @Nonnull final ImmutableMap<Class<?>, Reader<?, ? extends Builder<?>>> childReaders) { + + return (reader instanceof ListReader) + ? new CompositeListReader<>((ListReader) reader, childReaders) + : new CompositeReader<>(reader, childReaders); + } + + private static class CompositeListReader<D extends DataObject & Identifiable<K>, B extends Builder<D>, K extends Identifier<D>> + extends CompositeReader<D, B> + implements ListReader<D, K, B> { + + private final ListReader<D, K, B> delegate; + + private CompositeListReader(final ListReader<D, K, B> reader, + final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders) { + super(reader, childReaders); + this.delegate = reader; + } + + @Nonnull + @Override + public List<D> readList(@Nonnull final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx) + throws ReadFailedException { + LOG.trace("{}: Reading all list entries", this); + final List<K> allIds = delegate.getAllIds(id, ctx); + LOG.debug("{}: Reading list entries for: {}", this, allIds); + + // Override read list in order to perform readCurrent + readChildren here + final ArrayList<D> allEntries = new ArrayList<>(allIds.size()); + for (K key : allIds) { + final InstanceIdentifier.IdentifiableItem<D, K> currentBdItem = RWUtils.getCurrentIdItem(id, key); + final InstanceIdentifier<D> keyedId = RWUtils.replaceLastInId(id, currentBdItem); + final Optional<D> read = readCurrent(keyedId, ctx); + if (read.isPresent()) { + final DataObject singleItem = read.get(); + checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(singleItem.getClass())); + allEntries.add(getManagedDataObjectType().getTargetType().cast(singleItem)); + } + } + return allEntries; + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<D> readData) { + delegate.merge(builder, readData); + } + + @Override + public List<K> getAllIds(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final ReadContext ctx) throws ReadFailedException { + return delegate.getAllIds(id, ctx); + } + } + +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/DelegatingReaderRegistry.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReaderRegistry.java index 387f3cc7c..0a948c7a8 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/DelegatingReaderRegistry.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReaderRegistry.java @@ -14,7 +14,7 @@ * limitations under the License. */ -package io.fd.honeycomb.v3po.translate.util.read; +package io.fd.honeycomb.v3po.translate.util.read.registry; import static com.google.common.base.Preconditions.checkNotNull; @@ -25,13 +25,14 @@ import com.google.common.collect.Multimap; import io.fd.honeycomb.v3po.translate.read.ListReader; import io.fd.honeycomb.v3po.translate.read.ReadContext; import io.fd.honeycomb.v3po.translate.read.ReadFailedException; -import io.fd.honeycomb.v3po.translate.read.ReaderRegistry; -import io.fd.honeycomb.v3po.translate.util.RWUtils; import io.fd.honeycomb.v3po.translate.read.Reader; +import io.fd.honeycomb.v3po.translate.read.registry.ReaderRegistry; +import io.fd.honeycomb.v3po.translate.util.RWUtils; import java.util.Collections; import java.util.List; import java.util.Map; import javax.annotation.Nonnull; +import org.opendaylight.yangtools.concepts.Builder; import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; import org.slf4j.Logger; @@ -40,21 +41,21 @@ import org.slf4j.LoggerFactory; /** * Simple reader registry able to perform and aggregated read (ROOT read) on top of all provided readers. Also able to * delegate a specific read to one of the delegate readers. - * + * <p/> * This could serve as a utility to hold & hide all available readers in upper layers. */ -public final class DelegatingReaderRegistry implements ReaderRegistry { +public final class CompositeReaderRegistry implements ReaderRegistry { - private static final Logger LOG = LoggerFactory.getLogger(DelegatingReaderRegistry.class); + private static final Logger LOG = LoggerFactory.getLogger(CompositeReaderRegistry.class); - private final Map<Class<? extends DataObject>, Reader<? extends DataObject>> rootReaders; + private final Map<Class<? extends DataObject>, Reader<? extends DataObject, ? extends Builder<?>>> rootReaders; /** - * Create new {@link DelegatingReaderRegistry} + * Create new {@link CompositeReaderRegistry}. * * @param rootReaders List of delegate readers */ - public DelegatingReaderRegistry(@Nonnull final List<Reader<? extends DataObject>> rootReaders) { + public CompositeReaderRegistry(@Nonnull final List<Reader<? extends DataObject, ? extends Builder<?>>> rootReaders) { this.rootReaders = RWUtils.uniqueLinkedIndex(checkNotNull(rootReaders), RWUtils.MANAGER_CLASS_FUNCTION); } @@ -67,7 +68,7 @@ public final class DelegatingReaderRegistry implements ReaderRegistry { LOG.trace("Reading from all delegates: {}", rootReaders.values()); final Multimap<InstanceIdentifier<? extends DataObject>, DataObject> objects = LinkedListMultimap.create(); - for (Reader<? extends DataObject> rootReader : rootReaders.values()) { + for (Reader<? extends DataObject, ? extends Builder<?>> rootReader : rootReaders.values()) { LOG.debug("Reading from delegate: {}", rootReader); if (rootReader instanceof ListReader) { @@ -94,20 +95,10 @@ public final class DelegatingReaderRegistry implements ReaderRegistry { throws ReadFailedException { final InstanceIdentifier.PathArgument first = checkNotNull( Iterables.getFirst(id.getPathArguments(), null), "Empty id"); - final Reader<? extends DataObject> reader = rootReaders.get(first.getType()); + final Reader<? extends DataObject, ? extends Builder<?>> reader = rootReaders.get(first.getType()); checkNotNull(reader, "Unable to read %s. Missing reader. Current readers for: %s", id, rootReaders.keySet()); LOG.debug("Reading from delegate: {}", reader); return reader.read(id, ctx); } - - /** - * @throws UnsupportedOperationException This getter is not supported for reader registry since it does not manage a - * specific node type - */ - @Nonnull - @Override - public InstanceIdentifier<DataObject> getManagedDataObjectType() { - throw new UnsupportedOperationException("Root registry has no type"); - } } diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReaderRegistryBuilder.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReaderRegistryBuilder.java new file mode 100644 index 000000000..3adda713d --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/CompositeReaderRegistryBuilder.java @@ -0,0 +1,109 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read.registry; + +import com.google.common.collect.ImmutableMap; +import io.fd.honeycomb.v3po.translate.read.Reader; +import io.fd.honeycomb.v3po.translate.read.registry.ModifiableReaderRegistryBuilder; +import io.fd.honeycomb.v3po.translate.read.registry.ReaderRegistry; +import io.fd.honeycomb.v3po.translate.read.registry.ReaderRegistryBuilder; +import io.fd.honeycomb.v3po.translate.util.AbstractSubtreeManagerRegistryBuilderBuilder; +import io.fd.honeycomb.v3po.translate.util.read.ReflexiveReader; +import java.util.ArrayList; +import java.util.List; +import java.util.Set; +import java.util.stream.Collectors; +import javax.annotation.Nonnull; +import javax.annotation.concurrent.NotThreadSafe; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +@NotThreadSafe +public final class CompositeReaderRegistryBuilder + extends AbstractSubtreeManagerRegistryBuilderBuilder<Reader<? extends DataObject, ? extends Builder<?>>, ReaderRegistry> + implements ModifiableReaderRegistryBuilder, ReaderRegistryBuilder { + + private static final Logger LOG = LoggerFactory.getLogger(CompositeReaderRegistryBuilder.class); + + @Override + protected Reader<? extends DataObject, ? extends Builder<?>> getSubtreeHandler(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final Reader<? extends DataObject, ? extends Builder<?>> reader) { + return SubtreeReader.createForReader(handledChildren, reader); + } + + @Override + public <D extends DataObject> void addStructuralReader(@Nonnull InstanceIdentifier<D> id, + @Nonnull Class<? extends Builder<D>> builderType) { + add(new ReflexiveReader<>(id, builderType)); + } + + /** + * Create {@link CompositeReaderRegistry} with Readers ordered according to submitted relationships. + * <p/> + * Note: The ordering only applies between nodes on the same level, inter-level and inter-subtree relationships are + * ignored. + */ + @Override + public ReaderRegistry build() { + ImmutableMap<InstanceIdentifier<?>, Reader<? extends DataObject, ? extends Builder<?>>> mappedReaders = + getMappedHandlers(); + LOG.debug("Building Reader registry with Readers: {}", + mappedReaders.keySet().stream() + .map(InstanceIdentifier::getTargetType) + .map(Class::getSimpleName) + .collect(Collectors.joining(", "))); + + LOG.trace("Building Reader registry with Readers: {}", mappedReaders); + final List<InstanceIdentifier<?>> readerOrder = new ArrayList<>(mappedReaders.keySet()); + + // Wrap readers into composite readers recursively, collect roots and create registry + final TypeHierarchy typeHierarchy = TypeHierarchy.create(mappedReaders.keySet()); + final List<Reader<? extends DataObject, ? extends Builder<?>>> orderedRootReaders = + typeHierarchy.getRoots().stream() + .map(rootId -> toCompositeReader(rootId, mappedReaders, typeHierarchy)) + .collect(Collectors.toList()); + + // We are violating the ordering from mappedReaders, since we are forming a composite structure + // but at least order root writers + orderedRootReaders.sort((reader1, reader2) -> readerOrder.indexOf(reader1.getManagedDataObjectType()) + - readerOrder.indexOf(reader2.getManagedDataObjectType())); + + return new CompositeReaderRegistry(orderedRootReaders); + } + + private Reader<? extends DataObject, ? extends Builder<?>> toCompositeReader( + final InstanceIdentifier<?> instanceIdentifier, + final ImmutableMap<InstanceIdentifier<?>, Reader<? extends DataObject, ? extends Builder<?>>> mappedReaders, + final TypeHierarchy typeHierarchy) { + + // Order child readers according to the mappedReadersCollection + final ImmutableMap.Builder<Class<?>, Reader<?, ? extends Builder<?>>> childReadersMapB = ImmutableMap.builder(); + for (InstanceIdentifier<?> childId : mappedReaders.keySet()) { + if (typeHierarchy.getDirectChildren(instanceIdentifier).contains(childId)) { + childReadersMapB.put(childId.getTargetType(), toCompositeReader(childId, mappedReaders, typeHierarchy)); + } + } + + final ImmutableMap<Class<?>, Reader<?, ? extends Builder<?>>> childReadersMap = childReadersMapB.build(); + return childReadersMap.isEmpty() + ? mappedReaders.get(instanceIdentifier) + : CompositeReader.createForReader(mappedReaders.get(instanceIdentifier), childReadersMap); + } +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/SubtreeReader.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/SubtreeReader.java new file mode 100644 index 000000000..98fcac673 --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/SubtreeReader.java @@ -0,0 +1,250 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read.registry; + +import static com.google.common.base.Preconditions.checkArgument; + +import com.google.common.base.Optional; +import com.google.common.base.Predicate; +import com.google.common.collect.Iterables; +import io.fd.honeycomb.v3po.translate.read.ListReader; +import io.fd.honeycomb.v3po.translate.read.ReadContext; +import io.fd.honeycomb.v3po.translate.read.ReadFailedException; +import io.fd.honeycomb.v3po.translate.read.Reader; +import io.fd.honeycomb.v3po.translate.util.RWUtils; +import io.fd.honeycomb.v3po.translate.util.ReflectionUtils; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.Collections; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import org.opendaylight.yangtools.concepts.Builder; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.Identifiable; +import org.opendaylight.yangtools.yang.binding.Identifier; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Simple Reader delegate for subtree Readers (Readers handling also children nodes) providing a list of all the + * children nodes being handled. + */ +class SubtreeReader<D extends DataObject, B extends Builder<D>> implements Reader<D, B> { + + private static final Logger LOG = LoggerFactory.getLogger(SubtreeReader.class); + + private final Reader<D, B> delegate; + private final Set<InstanceIdentifier<?>> handledChildTypes = new HashSet<>(); + + private SubtreeReader(final Reader<D, B> delegate, Set<InstanceIdentifier<?>> handledTypes) { + this.delegate = delegate; + for (InstanceIdentifier<?> handledType : handledTypes) { + // Iid has to start with Reader's handled root type + checkArgument(delegate.getManagedDataObjectType().getTargetType().equals( + handledType.getPathArguments().iterator().next().getType()), + "Handled node from subtree has to be identified by an instance identifier starting from: %s." + + "Instance identifier was: %s", getManagedDataObjectType().getTargetType(), handledType); + checkArgument(Iterables.size(handledType.getPathArguments()) > 1, + "Handled node from subtree identifier too short: %s", handledType); + handledChildTypes.add(InstanceIdentifier.create(Iterables.concat( + getManagedDataObjectType().getPathArguments(), Iterables.skip(handledType.getPathArguments(), 1)))); + } + } + + /** + * Return set of types also handled by this Reader. All of the types are children of the type managed by this Reader + * excluding the type of this Reader. + */ + Set<InstanceIdentifier<?>> getHandledChildTypes() { + return handledChildTypes; + } + + @Override + @Nonnull + public Optional<? extends DataObject> read( + @Nonnull final InstanceIdentifier<? extends DataObject> id, + @Nonnull final ReadContext ctx) throws ReadFailedException { + final InstanceIdentifier<?> wildcarded = RWUtils.makeIidWildcarded(id); + + // Reading entire subtree and filtering if is current reader responsible + if (getHandledChildTypes().contains(wildcarded)) { + LOG.debug("{}: Subtree node managed by this writer requested: {}. Reading current and filtering", this, id); + // If there's no dedicated reader, use read current + final InstanceIdentifier<D> currentId = RWUtils.cutId(id, getManagedDataObjectType()); + final Optional<? extends DataObject> current = read(currentId, ctx); + // then perform post-reading filtering (return only requested sub-node) + final Optional<? extends DataObject> readSubtree = current.isPresent() + ? filterSubtree(current.get(), id, getManagedDataObjectType().getTargetType()) + : current; + + LOG.debug("{}: Subtree: {} read successfully. Result: {}", this, id, readSubtree); + return readSubtree; + + // Fallback solution, try delegate, maybe it can read the ID + } else { + return delegate.read(id, ctx); + } + } + + @Override + public void readCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final B builder, + @Nonnull final ReadContext ctx) + throws ReadFailedException { + delegate.readCurrentAttributes(id, builder, ctx); + } + + @Nonnull + @Override + public B getBuilder(final InstanceIdentifier<D> id) { + return delegate.getBuilder(id); + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final D readValue) { + delegate.merge(parentBuilder, readValue); + } + + @Nonnull + private static Optional<? extends DataObject> filterSubtree(@Nonnull final DataObject parent, + @Nonnull final InstanceIdentifier<? extends DataObject> absolutPath, + @Nonnull final Class<?> managedType) { + final InstanceIdentifier.PathArgument nextId = + RWUtils.getNextId(absolutPath, InstanceIdentifier.create(parent.getClass())); + + final Optional<? extends DataObject> nextParent = findNextParent(parent, nextId, managedType); + + if (Iterables.getLast(absolutPath.getPathArguments()).equals(nextId)) { + return nextParent; // we found the dataObject identified by absolutePath + } else if (nextParent.isPresent()) { + return filterSubtree(nextParent.get(), absolutPath, nextId.getType()); + } else { + return nextParent; // we can't go further, return Optional.absent() + } + } + + private static Optional<? extends DataObject> findNextParent(@Nonnull final DataObject parent, + @Nonnull final InstanceIdentifier.PathArgument nextId, + @Nonnull final Class<?> managedType) { + // TODO is there a better way than reflection ? e.g. convert into NN and filter out with a utility + Optional<Method> method = ReflectionUtils.findMethodReflex(managedType, "get", + Collections.emptyList(), nextId.getType()); + + if (method.isPresent()) { + return Optional.fromNullable(filterSingle(parent, nextId, method.get())); + } else { + // List child nodes + method = ReflectionUtils.findMethodReflex(managedType, + "get" + nextId.getType().getSimpleName(), Collections.emptyList(), List.class); + + if (method.isPresent()) { + return filterList(parent, nextId, method.get()); + } else { + throw new IllegalStateException( + "Unable to filter " + nextId + " from " + parent + " getters not found using reflexion"); + } + } + } + + @SuppressWarnings("unchecked") + private static Optional<? extends DataObject> filterList(final DataObject parent, + final InstanceIdentifier.PathArgument nextId, + final Method method) { + final List<? extends DataObject> invoke = (List<? extends DataObject>) invoke(method, nextId, parent); + + checkArgument(nextId instanceof InstanceIdentifier.IdentifiableItem<?, ?>, + "Unable to perform wildcarded read for %s", nextId); + final Identifier key = ((InstanceIdentifier.IdentifiableItem) nextId).getKey(); + // TODO replace with stream().filter().findFirst() when we switch to using java's Optional instead of Guava's + // because now we would have to do awkward Optional transformation since findFirstReturns guava's optional + return Iterables.tryFind(invoke, new Predicate<DataObject>() { + + @Override + public boolean apply(@Nullable final DataObject input) { + final Optional<Method> keyGetter = ReflectionUtils.findMethodReflex(nextId.getType(), "get", + Collections.emptyList(), key.getClass()); + final Object actualKey; + actualKey = invoke(keyGetter.get(), nextId, input); + return key.equals(actualKey); + } + }); + } + + private static DataObject filterSingle(final DataObject parent, + final InstanceIdentifier.PathArgument nextId, final Method method) { + return nextId.getType().cast(invoke(method, nextId, parent)); + } + + private static Object invoke(final Method method, + final InstanceIdentifier.PathArgument nextId, final DataObject parent) { + try { + return method.invoke(parent); + } catch (IllegalAccessException | InvocationTargetException e) { + throw new IllegalArgumentException("Unable to get " + nextId + " from " + parent, e); + } + } + + @Override + @Nonnull + public InstanceIdentifier<D> getManagedDataObjectType() { + return delegate.getManagedDataObjectType(); + } + + /** + * Wrap a Reader as a subtree Reader. + */ + static <D extends DataObject, B extends Builder<D>> Reader<D, B> createForReader(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, + @Nonnull final Reader<D, B> reader) { + return (reader instanceof ListReader) + ? new SubtreeListReader<>((ListReader) reader, handledChildren) + : new SubtreeReader<>(reader, handledChildren); + } + + private static final class SubtreeListReader<D extends DataObject & Identifiable<K>, B extends Builder<D>, K extends Identifier<D>> + extends SubtreeReader<D, B> implements ListReader<D, K, B> { + + private final ListReader<D, K, B> delegate; + + private SubtreeListReader(final ListReader<D, K, B> delegate, + final Set<InstanceIdentifier<?>> handledTypes) { + super(delegate, handledTypes); + this.delegate = delegate; + } + + @Nonnull + @Override + public List<D> readList(@Nonnull final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx) + throws ReadFailedException { + return delegate.readList(id, ctx); + } + + @Override + public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<D> readData) { + delegate.merge(builder, readData); + } + + @Override + public List<K> getAllIds(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final ReadContext ctx) throws ReadFailedException { + return delegate.getAllIds(id, ctx); + } + } + +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/TypeHierarchy.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/TypeHierarchy.java new file mode 100644 index 000000000..005e3bc8d --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/read/registry/TypeHierarchy.java @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.read.registry; + +import static com.google.common.base.Preconditions.checkArgument; + +import com.google.common.collect.Iterables; +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Set; +import java.util.stream.Collectors; +import javax.annotation.Nonnull; +import org.jgrapht.experimental.dag.DirectedAcyclicGraph; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +final class TypeHierarchy { + private final DirectedAcyclicGraph<InstanceIdentifier<?>, Parent> hierarchy; + + private TypeHierarchy(@Nonnull final DirectedAcyclicGraph<InstanceIdentifier<?>, Parent> hierarchy) { + this.hierarchy = hierarchy; + } + + Set<InstanceIdentifier<?>> getAllChildren(InstanceIdentifier<?> id) { + final HashSet<InstanceIdentifier<?>> instanceIdentifiers = new HashSet<>(); + for (InstanceIdentifier<?> childId : getDirectChildren(id)) { + instanceIdentifiers.add(childId); + instanceIdentifiers.addAll(getAllChildren(childId)); + } + return instanceIdentifiers; + } + + Set<InstanceIdentifier<?>> getDirectChildren(InstanceIdentifier<?> id) { + checkArgument(hierarchy.vertexSet().contains(id), + "Unknown reader: %s. Known readers: %s", id, hierarchy.vertexSet()); + + return hierarchy.outgoingEdgesOf(id).stream() + .map(hierarchy::getEdgeTarget) + .collect(Collectors.toSet()); + } + + Set<InstanceIdentifier<?>> getRoots() { + return hierarchy.vertexSet().stream() + .filter(vertex -> hierarchy.incomingEdgesOf(vertex).size() == 0) + .collect(Collectors.toSet()); + } + + /** + * Create reader hierarchy from a flat set of instance identifiers. + * + * @param allIds Set of unkeyed instance identifiers + */ + static TypeHierarchy create(@Nonnull Set<InstanceIdentifier<?>> allIds) { + final DirectedAcyclicGraph<InstanceIdentifier<?>, Parent> + readersHierarchy = new DirectedAcyclicGraph<>((sourceVertex, targetVertex) -> new Parent()); + + for (InstanceIdentifier<?> allId : allIds) { + checkArgument(!Iterables.isEmpty(allId.getPathArguments()), "Empty ID detected"); + + if (Iterables.size(allId.getPathArguments()) == 1) { + readersHierarchy.addVertex(allId); + } + + List<InstanceIdentifier.PathArgument> pathArgs = new LinkedList<>(); + pathArgs.add(allId.getPathArguments().iterator().next()); + + for (InstanceIdentifier.PathArgument pathArgument : Iterables.skip(allId.getPathArguments(), 1)) { + final InstanceIdentifier<?> previous = InstanceIdentifier.create(pathArgs); + pathArgs.add(pathArgument); + final InstanceIdentifier<?> current = InstanceIdentifier.create(pathArgs); + + readersHierarchy.addVertex(previous); + readersHierarchy.addVertex(current); + + try { + readersHierarchy.addDagEdge(previous, current); + } catch (DirectedAcyclicGraph.CycleFoundException e) { + throw new IllegalArgumentException("Loop in hierarchy detected", e); + } + } + } + + return new TypeHierarchy(readersHierarchy); + } + + private static final class Parent{} +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/AbstractGenericWriter.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/AbstractGenericWriter.java new file mode 100644 index 000000000..44b36edae --- /dev/null +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/AbstractGenericWriter.java @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package io.fd.honeycomb.v3po.translate.util.write; + +import static com.google.common.base.Preconditions.checkArgument; + +import io.fd.honeycomb.v3po.translate.util.RWUtils; +import io.fd.honeycomb.v3po.translate.write.WriteContext; +import io.fd.honeycomb.v3po.translate.write.WriteFailedException; +import io.fd.honeycomb.v3po.translate.write.Writer; +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public abstract class AbstractGenericWriter<D extends DataObject> implements Writer<D> { + + private static final Logger LOG = LoggerFactory.getLogger(AbstractGenericWriter.class); + + private final InstanceIdentifier<D> instanceIdentifier; + + protected AbstractGenericWriter(final InstanceIdentifier<D> type) { + this.instanceIdentifier = RWUtils.makeIidWildcarded(type); + } + + protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx) + throws WriteFailedException { + LOG.debug("{}: Writing current: {} data: {}", this, id, data); + writeCurrentAttributes(id, data, ctx); + LOG.debug("{}: Current node written successfully", this); + } + + protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter, + final WriteContext ctx) throws WriteFailedException { + LOG.debug("{}: Updating current: {} dataBefore: {}, datAfter: {}", this, id, dataBefore, dataAfter); + + if (dataBefore.equals(dataAfter)) { + LOG.debug("{}: Skipping current(no update): {}", this, id); + // No change, ignore + return; + } + updateCurrentAttributes(id, dataBefore, dataAfter, ctx); + LOG.debug("{}: Current node updated successfully", this); + } + + protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx) + throws WriteFailedException { + LOG.debug("{}: Deleting current: {} dataBefore: {}", this, id, dataBefore); + deleteCurrentAttributes(id, dataBefore, ctx); + } + + @SuppressWarnings("unchecked") + @Override + public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id, + @Nullable final DataObject dataBefore, + @Nullable final DataObject dataAfter, + @Nonnull final WriteContext ctx) throws WriteFailedException { + LOG.debug("{}: Updating : {}", this, id); + LOG.trace("{}: Updating : {}, from: {} to: {}", this, id, dataBefore, dataAfter); + + checkArgument(idPointsToCurrent(id), "Cannot handle data: %s. Only: %s can be handled by writer: %s", + id, getManagedDataObjectType(), this); + + if (isWrite(dataBefore, dataAfter)) { + writeCurrent((InstanceIdentifier<D>) id, castToManaged(dataAfter), ctx); + } else if (isDelete(dataBefore, dataAfter)) { + deleteCurrent((InstanceIdentifier<D>) id, castToManaged(dataBefore), ctx); + } else { + checkArgument(dataBefore != null && dataAfter != null, "No data to process"); + updateCurrent((InstanceIdentifier<D>) id, castToManaged(dataBefore), castToManaged(dataAfter), ctx); + } + } + + private void checkDataType(@Nonnull final DataObject dataAfter) { + checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(dataAfter.getClass())); + } + + private D castToManaged(final DataObject data) { + checkDataType(data); + return getManagedDataObjectType().getTargetType().cast(data); + } + + private static boolean isWrite(final DataObject dataBefore, + final DataObject dataAfter) { + return dataBefore == null && dataAfter != null; + } + + private static boolean isDelete(final DataObject dataBefore, + final DataObject dataAfter) { + return dataAfter == null && dataBefore != null; + } + + private boolean idPointsToCurrent(final @Nonnull InstanceIdentifier<? extends DataObject> id) { + return id.getTargetType().equals(getManagedDataObjectType().getTargetType()); + } + + protected abstract void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final D data, + @Nonnull final WriteContext ctx) throws WriteFailedException; + + protected abstract void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final D dataBefore, + @Nonnull final WriteContext ctx) throws WriteFailedException; + + protected abstract void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, + @Nonnull final D dataBefore, + @Nonnull final D dataAfter, + @Nonnull final WriteContext ctx) throws WriteFailedException; + + @Nonnull + @Override + public InstanceIdentifier<D> getManagedDataObjectType() { + return instanceIdentifier; + } + + + @Override + public String toString() { + return String.format("Writer[%s]", getManagedDataObjectType().getTargetType().getSimpleName()); + } +} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/CloseableWriter.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/CloseableWriter.java deleted file mode 100644 index 3442f8370..000000000 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/CloseableWriter.java +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package io.fd.honeycomb.v3po.translate.util.write; - -import io.fd.honeycomb.v3po.translate.write.WriteContext; -import io.fd.honeycomb.v3po.translate.write.WriteFailedException; -import io.fd.honeycomb.v3po.translate.write.Writer; -import javax.annotation.Nonnull; -import javax.annotation.Nullable; -import org.opendaylight.yangtools.yang.binding.DataObject; -import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; - -/** - * Closeable wrapper for a writer - */ -public final class CloseableWriter<D extends DataObject> implements Writer<D>, AutoCloseable { - - private Writer<D> vppCompositeRootWriter; - - public CloseableWriter( - final Writer<D> vppCompositeRootWriter) { - this.vppCompositeRootWriter = vppCompositeRootWriter; - } - - @Override - public void update( - @Nonnull final InstanceIdentifier<? extends DataObject> id, - @Nullable final DataObject dataBefore, - @Nullable final DataObject dataAfter, - @Nonnull final WriteContext ctx) throws WriteFailedException { - vppCompositeRootWriter.update(id, dataBefore, dataAfter, ctx); - } - - @Nonnull - @Override - public InstanceIdentifier<D> getManagedDataObjectType() { - return vppCompositeRootWriter.getManagedDataObjectType(); - } - - @Override - public String toString() { - return vppCompositeRootWriter.toString(); - } - - @Override - public void close() throws Exception { - - } -} diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/NoopWriterRegistry.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/NoopWriterRegistry.java index 236ad8917..7c45fcd82 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/NoopWriterRegistry.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/NoopWriterRegistry.java @@ -18,14 +18,8 @@ package io.fd.honeycomb.v3po.translate.util.write; import io.fd.honeycomb.v3po.translate.TranslationException; import io.fd.honeycomb.v3po.translate.write.WriteContext; -import io.fd.honeycomb.v3po.translate.write.WriteFailedException; -import io.fd.honeycomb.v3po.translate.write.WriterRegistry; +import io.fd.honeycomb.v3po.translate.write.registry.WriterRegistry; import javax.annotation.Nonnull; -import javax.annotation.Nullable; -import org.opendaylight.yangtools.yang.binding.DataObject; -import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; /** * Empty registry that does not perform any changes. Can be used in data layer, if we want to disable passing data to @@ -33,29 +27,12 @@ import org.slf4j.LoggerFactory; */ public class NoopWriterRegistry implements WriterRegistry, AutoCloseable { - private static final Logger LOG = LoggerFactory.getLogger(NoopWriterRegistry.class); - - @Override - public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id, - @Nullable final DataObject dataBefore, @Nullable final DataObject dataAfter, - @Nonnull final WriteContext ctx) throws WriteFailedException { - LOG.trace("NoopWriterRegistry.update id={}, dataBefore{}, dataAfter={], ctx={}", id, dataBefore, dataAfter, - ctx); - // NOOP - } - @Override public void update(@Nonnull final DataObjectUpdates updates, @Nonnull final WriteContext ctx) throws TranslationException { // NOOP } - @Nonnull - @Override - public InstanceIdentifier<DataObject> getManagedDataObjectType() { - throw new UnsupportedOperationException("Noop registry has no type"); - } - @Override public void close() throws Exception { // NOOP diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistry.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistry.java index 4abad23a6..7433de813 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistry.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistry.java @@ -21,7 +21,6 @@ import static com.google.common.base.Preconditions.checkArgument; import com.google.common.base.Optional; import com.google.common.collect.HashMultimap; import com.google.common.collect.ImmutableMap; -import com.google.common.collect.ImmutableMultimap; import com.google.common.collect.ImmutableSet; import com.google.common.collect.Lists; import com.google.common.collect.Multimap; @@ -32,7 +31,7 @@ import io.fd.honeycomb.v3po.translate.write.DataObjectUpdate; import io.fd.honeycomb.v3po.translate.write.WriteContext; import io.fd.honeycomb.v3po.translate.write.WriteFailedException; import io.fd.honeycomb.v3po.translate.write.Writer; -import io.fd.honeycomb.v3po.translate.write.WriterRegistry; +import io.fd.honeycomb.v3po.translate.write.registry.WriterRegistry; import java.util.Collection; import java.util.Collections; import java.util.HashSet; @@ -91,15 +90,6 @@ final class FlatWriterRegistry implements WriterRegistry { } @Override - public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id, - @Nullable final DataObject dataBefore, - @Nullable final DataObject dataAfter, - @Nonnull final WriteContext ctx) throws WriteFailedException { - singleUpdate(ImmutableMultimap.of( - RWUtils.makeIidWildcarded(id), DataObjectUpdate.create(id, dataBefore, dataAfter)), ctx); - } - - @Override public void update(@Nonnull final DataObjectUpdates updates, @Nonnull final WriteContext ctx) throws TranslationException { if (updates.isEmpty()) { @@ -265,12 +255,6 @@ final class FlatWriterRegistry implements WriterRegistry { return writers.get(singleType); } - @Nonnull - @Override - public InstanceIdentifier<DataObject> getManagedDataObjectType() { - throw new UnsupportedOperationException("Registry has no managed type"); - } - // FIXME unit test private final class ReverterImpl implements Reverter { diff --git a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistryBuilder.java b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistryBuilder.java index f5d218f55..bfac2eedd 100644 --- a/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistryBuilder.java +++ b/v3po/translate-utils/src/main/java/io/fd/honeycomb/v3po/translate/util/write/registry/FlatWriterRegistryBuilder.java @@ -17,20 +17,16 @@ package io.fd.honeycomb.v3po.translate.util.write.registry; import com.google.common.annotations.VisibleForTesting; -import com.google.common.base.Preconditions; import com.google.common.collect.ImmutableMap; -import io.fd.honeycomb.v3po.translate.util.RWUtils; -import io.fd.honeycomb.v3po.translate.write.ModifiableWriterRegistry; +import io.fd.honeycomb.v3po.translate.util.AbstractSubtreeManagerRegistryBuilderBuilder; import io.fd.honeycomb.v3po.translate.write.Writer; -import io.fd.honeycomb.v3po.translate.write.WriterRegistryBuilder; -import java.util.Collection; -import java.util.HashMap; -import java.util.Map; +import io.fd.honeycomb.v3po.translate.write.registry.ModifiableWriterRegistryBuilder; +import io.fd.honeycomb.v3po.translate.write.registry.WriterRegistry; +import io.fd.honeycomb.v3po.translate.write.registry.WriterRegistryBuilder; import java.util.Set; import java.util.stream.Collectors; import javax.annotation.Nonnull; import javax.annotation.concurrent.NotThreadSafe; -import org.jgrapht.experimental.dag.DirectedAcyclicGraph; import org.opendaylight.yangtools.yang.binding.DataObject; import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; import org.slf4j.Logger; @@ -40,156 +36,24 @@ import org.slf4j.LoggerFactory; * Builder for {@link FlatWriterRegistry} allowing users to specify inter-writer relationships. */ @NotThreadSafe -public final class FlatWriterRegistryBuilder implements ModifiableWriterRegistry, WriterRegistryBuilder, AutoCloseable { +public final class FlatWriterRegistryBuilder + extends AbstractSubtreeManagerRegistryBuilderBuilder<Writer<? extends DataObject>, WriterRegistry> + implements ModifiableWriterRegistryBuilder, WriterRegistryBuilder { private static final Logger LOG = LoggerFactory.getLogger(FlatWriterRegistryBuilder.class); - // Using directed acyclic graph to represent the ordering relationships between writers - private final DirectedAcyclicGraph<InstanceIdentifier<?>, WriterRelation> - writersRelations = new DirectedAcyclicGraph<>((sourceVertex, targetVertex) -> new WriterRelation()); - private final Map<InstanceIdentifier<?>, Writer<?>> writersMap = new HashMap<>(); - - /** - * AddWriter without any special relationship to any other type. - */ - @Override - public FlatWriterRegistryBuilder addWriter(@Nonnull final Writer<? extends DataObject> writer) { - // Make IID wildcarded just in case - // + the way InstanceIdentifier.create + equals work for Identifiable items is unexpected, meaning updates would - // not be matched to writers in registry - final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(writer.getManagedDataObjectType()); - checkWriterNotPresentYet(targetType); - writersRelations.addVertex(targetType); - writersMap.put(targetType, writer); - return this; - } - - /** - * AddWriter without any special relationship to any other type. - */ - @Override - public FlatWriterRegistryBuilder addSubtreeWriter(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, - @Nonnull final Writer<? extends DataObject> writer) { - addWriter(SubtreeWriter.createForWriter(handledChildren, writer)); - return this; - } - - private void checkWriterNotPresentYet(final InstanceIdentifier<?> targetType) { - Preconditions.checkArgument(!writersMap.containsKey(targetType), - "Writer for type: %s already present: %s", targetType, writersMap.get(targetType)); - } - - /** - * Add writer with relationship: to be executed before writer handling relatedType. - */ - @Override - public FlatWriterRegistryBuilder addWriterBefore(@Nonnull final Writer<? extends DataObject> writer, - @Nonnull final InstanceIdentifier<?> relatedType) { - final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(writer.getManagedDataObjectType()); - final InstanceIdentifier<?> wildcardedRelatedType = RWUtils.makeIidWildcarded(relatedType); - checkWriterNotPresentYet(targetType); - writersRelations.addVertex(targetType); - writersRelations.addVertex(wildcardedRelatedType); - addEdge(targetType, wildcardedRelatedType); - writersMap.put(targetType, writer); - return this; - } - - @Override - public FlatWriterRegistryBuilder addSubtreeWriterBefore(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, - @Nonnull final Writer<? extends DataObject> writer, - @Nonnull final InstanceIdentifier<?> relatedType) { - return addWriterBefore(SubtreeWriter.createForWriter(handledChildren, writer), relatedType); - } - - @Override - public FlatWriterRegistryBuilder addWriterBefore(@Nonnull final Writer<? extends DataObject> writer, - @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { - final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(writer.getManagedDataObjectType()); - checkWriterNotPresentYet(targetType); - writersRelations.addVertex(targetType); - relatedTypes.stream() - .map(RWUtils::makeIidWildcarded) - .forEach(writersRelations::addVertex); - relatedTypes.stream() - .map(RWUtils::makeIidWildcarded) - .forEach(type -> addEdge(targetType, type)); - writersMap.put(targetType, writer); - return this; - } - - @Override - public FlatWriterRegistryBuilder addSubtreeWriterBefore(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, - @Nonnull final Writer<? extends DataObject> writer, - @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { - return addWriterBefore(SubtreeWriter.createForWriter(handledChildren, writer), relatedTypes); - } - - /** - * Add writer with relationship: to be executed after writer handling relatedType. - */ - @Override - public FlatWriterRegistryBuilder addWriterAfter(@Nonnull final Writer<? extends DataObject> writer, - @Nonnull final InstanceIdentifier<?> relatedType) { - final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(writer.getManagedDataObjectType()); - final InstanceIdentifier<?> wildcardedRelatedType = RWUtils.makeIidWildcarded(relatedType); - checkWriterNotPresentYet(targetType); - writersRelations.addVertex(targetType); - writersRelations.addVertex(wildcardedRelatedType); - // set edge to indicate before relationship, just reversed - addEdge(wildcardedRelatedType, targetType); - writersMap.put(targetType, writer); - return this; - } - - @Override - public FlatWriterRegistryBuilder addSubtreeWriterAfter(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, - @Nonnull final Writer<? extends DataObject> writer, - @Nonnull final InstanceIdentifier<?> relatedType) { - return addWriterAfter(SubtreeWriter.createForWriter(handledChildren, writer), relatedType); - } - - @Override - public FlatWriterRegistryBuilder addWriterAfter(@Nonnull final Writer<? extends DataObject> writer, - @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { - final InstanceIdentifier<?> targetType = RWUtils.makeIidWildcarded(writer.getManagedDataObjectType()); - checkWriterNotPresentYet(targetType); - writersRelations.addVertex(targetType); - relatedTypes.stream() - .map(RWUtils::makeIidWildcarded) - .forEach(writersRelations::addVertex); - // set edge to indicate before relationship, just reversed - relatedTypes.stream() - .map(RWUtils::makeIidWildcarded) - .forEach(type -> addEdge(type, targetType)); - writersMap.put(targetType, writer); - return this; - } - @Override - public FlatWriterRegistryBuilder addSubtreeWriterAfter(@Nonnull final Set<InstanceIdentifier<?>> handledChildren, - @Nonnull final Writer<? extends DataObject> writer, - @Nonnull final Collection<InstanceIdentifier<?>> relatedTypes) { - return addWriterAfter(SubtreeWriter.createForWriter(handledChildren, writer), relatedTypes); - } - - - private void addEdge(final InstanceIdentifier<?> targetType, - final InstanceIdentifier<?> relatedType) { - try { - writersRelations.addDagEdge(targetType, relatedType); - } catch (DirectedAcyclicGraph.CycleFoundException e) { - throw new IllegalArgumentException(String.format( - "Unable to add writer with relation: %s -> %s. Loop detected", targetType, relatedType), e); - } + protected Writer<? extends DataObject> getSubtreeHandler(final @Nonnull Set<InstanceIdentifier<?>> handledChildren, + final @Nonnull Writer<? extends DataObject> writer) { + return SubtreeWriter.createForWriter(handledChildren, writer); } /** * Create FlatWriterRegistry with writers ordered according to submitted relationships. */ @Override - public FlatWriterRegistry build() { - final ImmutableMap<InstanceIdentifier<?>, Writer<?>> mappedWriters = getMappedWriters(); + public WriterRegistry build() { + final ImmutableMap<InstanceIdentifier<?>, Writer<?>> mappedWriters = getMappedHandlers(); LOG.debug("Building writer registry with writers: {}", mappedWriters.keySet().stream() .map(InstanceIdentifier::getTargetType) @@ -200,26 +64,8 @@ public final class FlatWriterRegistryBuilder implements ModifiableWriterRegistry } @VisibleForTesting - ImmutableMap<InstanceIdentifier<?>, Writer<?>> getMappedWriters() { - final ImmutableMap.Builder<InstanceIdentifier<?>, Writer<?>> builder = ImmutableMap.builder(); - // Iterate writer types according to their relationships from graph - writersRelations.iterator() - .forEachRemaining(writerType -> { - // There might be types stored just for relationship sake, no real writer, ignoring those - if (writersMap.containsKey(writerType)) { - builder.put(writerType, writersMap.get(writerType)); - } - }); - return builder.build(); - } - @Override - public void close() throws Exception { - writersMap.clear(); - writersRelations.removeAllEdges(writersRelations.edgeSet()); - writersRelations.removeAllVertices(writersRelations.vertexSet()); + protected ImmutableMap<InstanceIdentifier<?>, Writer<? extends DataObject>> getMappedHandlers() { + return super.getMappedHandlers(); } - - // Represents edges in graph - private static final class WriterRelation {} } |