1 files changed, 150 insertions, 0 deletions
diff --git a/infra/it/it-test/src/test/java/io/fd/honeycomb/data/impl/HoneycombSubtreeReadInfraTest.java b/infra/it/it-test/src/test/java/io/fd/honeycomb/data/impl/HoneycombSubtreeReadInfraTest.java
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index 000000000..a43f70a84
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+++ b/infra/it/it-test/src/test/java/io/fd/honeycomb/data/impl/HoneycombSubtreeReadInfraTest.java
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+/*
+ * 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.data.impl;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Sets;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.translate.impl.read.GenericListReader;
+import io.fd.honeycomb.translate.read.ListReader;
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.read.Reader;
+import io.fd.honeycomb.translate.read.registry.ReaderRegistry;
+import io.fd.honeycomb.translate.util.read.ReflexiveListReaderCustomizer;
+import io.fd.honeycomb.translate.util.read.registry.CompositeReaderRegistryBuilder;
+import java.util.List;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.ContainerWithList;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.ContainerWithListBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.container.with.list.ListInContainer;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.container.with.list.ListInContainerBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.container.with.list.ListInContainerKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.container.with.list.list.in.container.ContainerInList;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.hc.test.rev150105.container.with.list.list.in.container.ContainerInListBuilder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+
+public class HoneycombSubtreeReadInfraTest extends AbstractInfraTest {
+
+    @Mock
+    private ReadContext ctx;
+    private ReaderRegistry registry;
+
+    private Reader<ContainerWithList, ContainerWithListBuilder> containerWithListReader =
+            HoneycombReadInfraTest.mockReader(Ids.CONTAINER_WITH_LIST_ID, this::readSubtree, ContainerWithListBuilder.class);
+
+    private ListReader<ListInContainer, ListInContainerKey, ListInContainerBuilder> listInContainerReader =
+            new GenericListReader<>(Ids.LIST_IN_CONTAINER_ID,
+                    new ReflexiveListReaderCustomizer<ListInContainer, ListInContainerKey, ListInContainerBuilder>(Ids.LIST_IN_CONTAINER_ID.getTargetType(), ListInContainerBuilder.class) {
+
+                        @Nonnull
+                        @Override
+                        public List<ListInContainerKey> getAllIds(@Nonnull final InstanceIdentifier<ListInContainer> id,
+                                                                  @Nonnull final ReadContext context)
+                                throws ReadFailedException {
+                            // FIXME this is the only way of extending subtree reader via its list child
+                            // Reflexive list reader has to be used in place of the list(managed by subtree reader perent)
+                            // to enable further children readers. However, it will not work out of the box, because
+                            // reflexive list reader has no way to tell what are the IDs to correctly invoke its children.
+                            // Only way is to override the getAllIds method in reflexive reader and return the same list
+                            // as parent used (this can be done using cache or repeated dump call)
+                            return Lists.newArrayList(new ListInContainerKey(1L), new ListInContainerKey(2L));
+                        }
+
+                        @Override
+                        public void readCurrentAttributes(final InstanceIdentifier<ListInContainer> id,
+                                                          final ListInContainerBuilder builder,
+                                                          final ReadContext context) throws ReadFailedException {
+                            super.readCurrentAttributes(id, builder, context);
+                            builder.setKey(id.firstKeyOf(ListInContainer.class));
+                        }
+                    });
+
+    private Reader<ContainerInList, ContainerInListBuilder> containerInListReader =
+            HoneycombReadInfraTest.mockReader(Ids.CONTAINER_IN_LIST_ID, this::readContainerInList, ContainerInListBuilder.class);
+
+    // TODO Test subtree readers especially composite structure where readers are under subtree reader
+
+    @Override
+    void postSetup() {
+        initReaderRegistry();
+    }
+
+    private void initReaderRegistry() {
+        registry = new CompositeReaderRegistryBuilder()
+                // Subtree reader handling its child list
+                .subtreeAdd(Sets.newHashSet(Ids.LIST_IN_CONTAINER_ID), containerWithListReader)
+                // Reflexive
+                .add(listInContainerReader)
+                .add(containerInListReader)
+        .build();
+    }
+
+    @Test
+    public void testReadAll() throws Exception {
+        final ReadableDataTreeDelegator readableDataTreeDelegator =
+                new ReadableDataTreeDelegator(serializer, schemaContext, registry, contextBroker);
+        final CheckedFuture<Optional<NormalizedNode<?, ?>>, org.opendaylight.controller.md.sal.common.api.data.ReadFailedException>
+                read = readableDataTreeDelegator.read(YangInstanceIdentifier.EMPTY);
+
+        final Multimap<InstanceIdentifier<? extends DataObject>, ? extends DataObject> readAll =
+                toBinding(read.checkedGet().get());
+        assertThat(readAll.size(), is(1));
+        assertEquals(readEntireSubtree(), readAll.get(Ids.CONTAINER_WITH_LIST_ID).stream().findFirst().get());
+    }
+
+    private void readSubtree(final InstanceIdentifier<ContainerWithList> id,
+                             final ContainerWithListBuilder b,
+                             final ReadContext readContext) {
+        b.setListInContainer(Lists.newArrayList(1L, 2L).stream()
+                .map(l -> new ListInContainerBuilder().setId(l).build())
+                .collect(Collectors.toList()));
+    }
+
+    private ContainerWithList readEntireSubtree() {
+        final ContainerWithListBuilder b = new ContainerWithListBuilder();
+        b.setListInContainer(Lists.newArrayList(1L, 2L).stream()
+                .map(l -> {
+                    final ContainerInListBuilder containerInListBuilder = new ContainerInListBuilder();
+                    readContainerInList(
+                            Ids.CONTAINER_WITH_LIST_ID.child(ListInContainer.class, new ListInContainerKey(l)).child(ContainerInList.class),
+                            containerInListBuilder,
+                            ctx);
+                    return new ListInContainerBuilder().setId(l).setContainerInList(containerInListBuilder.build()).build();
+                })
+                .collect(Collectors.toList()));
+        return b.build();
+    }
+
+    private void readContainerInList(final InstanceIdentifier<ContainerInList> id,
+                                     final ContainerInListBuilder b,
+                                     final ReadContext readContext) {
+        b.setName(id.firstKeyOf(ListInContainer.class).getId().toString());
+    }
+}