1 files changed, 176 insertions, 0 deletions
diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/vppclassifier/VppClassifierContextManagerImpl.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/vppclassifier/VppClassifierContextManagerImpl.java
new file mode 100644
index 000000000..9f61ab021
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/translate/v3po/vppclassifier/VppClassifierContextManagerImpl.java
@@ -0,0 +1,176 @@
+/*
+ * 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.translate.v3po.vppclassifier;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkState;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.inject.Inject;
+import io.fd.honeycomb.translate.MappingContext;
+import io.fd.honeycomb.translate.read.ReaderFactory;
+import io.fd.honeycomb.translate.read.registry.ModifiableReaderRegistryBuilder;
+import io.fd.honeycomb.translate.util.RWUtils;
+import io.fd.honeycomb.translate.util.read.BindingBrokerReader;
+import java.util.stream.Collector;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.inject.Named;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev150603.VppNodeName;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.VppClassifierContext;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.VppClassifierContextBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.ClassifyTableContext;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.ClassifyTableContextBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.ClassifyTableContextKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.classify.table.context.NodeContext;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.classify.table.context.NodeContextBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev160909.vpp.classifier.context.classify.table.context.NodeContextKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+
+/**
+ * Facade on top of {@link MappingContext} that manages {@link ClassifyTableContext}.
+ */
+public final class VppClassifierContextManagerImpl implements VppClassifierContextManager {
+    private static final Collector<ClassifyTableContext, ?, ClassifyTableContext> SINGLE_ITEM_COLLECTOR =
+        RWUtils.singleItemCollector();
+
+    @VisibleForTesting
+    static final InstanceIdentifier<VppClassifierContext>
+        VPP_CLASSIFIER_CONTEXT_IID = KeyedInstanceIdentifier.create(VppClassifierContext.class);
+    private final String artificialNamePrefix;
+
+    /**
+     * Creates new VppClassifierContextManagerImpl.
+     *
+     * @param artificialNamePrefix artificial name to be used to generate names for classify tables without existing
+     *                             metadata
+     */
+    public VppClassifierContextManagerImpl(@Nonnull final String artificialNamePrefix) {
+        this.artificialNamePrefix =
+            Preconditions.checkNotNull(artificialNamePrefix, "artificialNamePrefix should not be null");
+    }
+
+    private KeyedInstanceIdentifier<ClassifyTableContext, ClassifyTableContextKey> getMappingIid(final String name) {
+        return VPP_CLASSIFIER_CONTEXT_IID.child(ClassifyTableContext.class, new ClassifyTableContextKey(name));
+    }
+
+    @Override
+    public void addTable(final int id, @Nonnull final String name, @Nullable final VppNodeName classifierNode,
+                         @Nonnull final MappingContext ctx) {
+        final KeyedInstanceIdentifier<ClassifyTableContext, ClassifyTableContextKey> mappingIid = getMappingIid(name);
+        final ClassifyTableContextBuilder tableCtx = new ClassifyTableContextBuilder().setIndex(id).setName(name);
+        if (classifierNode != null) {
+            tableCtx.setClassifierNodeName(classifierNode.getValue());
+        }
+        ctx.put(mappingIid, tableCtx.build());
+    }
+
+    @Override
+    public boolean containsTable(@Nonnull final String name, @Nonnull final MappingContext ctx) {
+        final Optional<ClassifyTableContext> read = ctx.read(getMappingIid(name));
+        return read.isPresent();
+    }
+
+    @Override
+    public int getTableIndex(@Nonnull final String name, @Nonnull final MappingContext ctx) {
+        final Optional<ClassifyTableContext> read = ctx.read(getMappingIid(name));
+        checkArgument(read.isPresent(), "No mapping stored for name: %s", name);
+        return read.get().getIndex();
+    }
+
+    @Override
+    public String getTableName(final int id, @Nonnull final MappingContext ctx) {
+        if (!containsName(id, ctx)) {
+            final String artificialName = getArtificialName(id);
+            addTable(id, artificialName, null, ctx);
+        }
+
+        final Optional<VppClassifierContext> read = ctx.read(VPP_CLASSIFIER_CONTEXT_IID);
+        checkState(read.isPresent(), "VppClassifierContext for index: %s is not present. But should be", id);
+
+        return read.get().getClassifyTableContext().stream()
+            .filter(t -> t.getIndex().equals(id))
+            .collect(SINGLE_ITEM_COLLECTOR).getName();
+    }
+
+    private boolean containsName(final int index, @Nonnull final MappingContext mappingContext) {
+        final Optional<VppClassifierContext> read = mappingContext.read(VPP_CLASSIFIER_CONTEXT_IID);
+        return read.isPresent()
+            ? read.get().getClassifyTableContext().stream().anyMatch(t -> t.getIndex().equals(index))
+            : false;
+    }
+
+    @Override
+    public Optional<String> getTableBaseNode(@Nonnull final String name, @Nonnull final MappingContext ctx) {
+        final Optional<ClassifyTableContext> read = ctx.read(getMappingIid(name));
+        if (read.isPresent()) {
+            return Optional.fromNullable(read.get().getClassifierNodeName());
+        }
+        return Optional.absent();
+    }
+
+    @Override
+    public void removeTable(@Nonnull final String name, @Nonnull final MappingContext ctx) {
+        ctx.delete(getMappingIid(name));
+    }
+
+    @Override
+    public void addNodeName(@Nonnull final String tableName, final int nodeIndex,
+                            @Nonnull final String nodeName,
+                            @Nonnull final MappingContext ctx) {
+        final KeyedInstanceIdentifier<NodeContext, NodeContextKey> iid =
+            getMappingIid(tableName).child(NodeContext.class, new NodeContextKey(nodeName));
+        ctx.put(iid, new NodeContextBuilder().setName(nodeName).setIndex(nodeIndex).build());
+    }
+
+    @Override
+    public Optional<String> getNodeName(final int tableIndex, final int nodeIndex, @Nonnull final MappingContext ctx) {
+        if (!containsName(tableIndex, ctx)) {
+            return Optional.absent();
+        }
+        final String tableName = getTableName(tableIndex, ctx);
+        final Optional<ClassifyTableContext> tableCtx = ctx.read(getMappingIid(tableName));
+        return Optional.fromNullable(tableCtx.get().getNodeContext().stream()
+            .filter(n -> n.getIndex().equals(nodeIndex))
+            .findFirst()
+            .map(nodes -> nodes.getName())
+            .orElse(null));
+    }
+
+    private String getArtificialName(final int index) {
+        return artificialNamePrefix + index;
+    }
+
+    public static final class ContextsReaderFactory implements ReaderFactory {
+
+        @Inject
+        @Named("honeycomb-context")
+        private DataBroker contextBindingBrokerDependency;
+
+        @Override
+        public void init(final ModifiableReaderRegistryBuilder registry) {
+            registry.add(new BindingBrokerReader<>(VPP_CLASSIFIER_CONTEXT_IID,
+                contextBindingBrokerDependency,
+                LogicalDatastoreType.OPERATIONAL, VppClassifierContextBuilder.class));
+        }
+    }
+}