1 files changed, 102 insertions, 0 deletions
diff --git a/l3/utils/src/main/java/io/fd/hc2vpp/l3/utils/ip/read/IpNeighbourReader.java b/l3/utils/src/main/java/io/fd/hc2vpp/l3/utils/ip/read/IpNeighbourReader.java
new file mode 100644
index 000000000..69df87b62
--- /dev/null
+++ b/l3/utils/src/main/java/io/fd/hc2vpp/l3/utils/ip/read/IpNeighbourReader.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2017 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.hc2vpp.l3.utils.ip.read;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.common.base.Optional;
+import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.hc2vpp.v3po.util.SubInterfaceUtils;
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
+import io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor;
+import io.fd.vpp.jvpp.core.dto.IpNeighborDetails;
+import io.fd.vpp.jvpp.core.dto.IpNeighborDetailsReplyDump;
+import io.fd.vpp.jvpp.core.dto.IpNeighborDump;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import java.util.Collections;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev161214.interfaces.state._interface.sub.interfaces.SubInterface;
+import org.opendaylight.yangtools.yang.binding.Identifier;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Provides logic for reading ip neighbours
+ */
+public abstract class IpNeighbourReader extends IpReader {
+
+    private final DumpCacheManager<IpNeighborDetailsReplyDump, IfaceDumpFilter> dumpCacheManager;
+
+    protected IpNeighbourReader(@Nonnull final NamingContext interfaceContext, boolean isIpv6,
+                                @Nonnull final DumpCacheManager<IpNeighborDetailsReplyDump, IfaceDumpFilter> dumpCacheManager) {
+        super(interfaceContext, isIpv6);
+        this.dumpCacheManager = dumpCacheManager;
+    }
+
+    @Nonnull
+    protected Optional<IpNeighborDetailsReplyDump> interfaceNeighboursDump(@Nonnull final InstanceIdentifier<?> id,
+                                                                           @Nonnull final ReadContext context) throws ReadFailedException {
+        return dumpCacheManager.getDump(id, context.getModificationCache(), new IfaceDumpFilter(getInterfaceContext()
+                .getIndex(id.firstKeyOf(Interface.class).getName(), context.getMappingContext()), isIpv6()));
+    }
+
+    @Nonnull
+    protected Optional<IpNeighborDetailsReplyDump> subInterfaceNeighboursDump(@Nonnull final InstanceIdentifier<?> id,
+                                                                              @Nonnull final ReadContext context) throws ReadFailedException {
+        final String subInterfaceName = SubInterfaceUtils.getSubInterfaceName(id.firstKeyOf(Interface.class).getName(),
+                id.firstKeyOf(SubInterface.class).getIdentifier().intValue());
+        return dumpCacheManager.getDump(id, context.getModificationCache(), new IfaceDumpFilter(getInterfaceContext()
+                .getIndex(subInterfaceName, context.getMappingContext()), isIpv6()));
+    }
+
+    @Nonnull
+    protected static EntityDumpExecutor<IpNeighborDetailsReplyDump, IfaceDumpFilter> createNeighbourDumpExecutor(
+            @Nonnull final FutureJVppCore vppApi) {
+        return (identifier, params) -> {
+            checkNotNull(params, "Address dump params cannot be null");
+
+            final IpNeighborDump dumpRequest = new IpNeighborDump();
+            dumpRequest.isIpv6 = ByteDataTranslator.INSTANCE.booleanToByte(params.isIpv6());
+            dumpRequest.swIfIndex = params.getInterfaceIndex();
+
+            return JvppReplyConsumer.INSTANCE.getReplyForRead(vppApi.ipNeighborDump(dumpRequest).toCompletableFuture(), identifier);
+        };
+    }
+
+    @Nonnull
+    protected <T extends Identifier> List<T> getNeighborKeys(
+            final Optional<IpNeighborDetailsReplyDump> neighbourDumpOpt,
+            final Function<IpNeighborDetails, T> detailToKey)
+            throws ReadFailedException {
+        if (neighbourDumpOpt.isPresent()) {
+            final IpNeighborDetailsReplyDump neighbourDump = neighbourDumpOpt.get();
+
+            return neighbourDump.ipNeighborDetails.stream()
+                    .map(detailToKey)
+                    .collect(Collectors.toList());
+        } else {
+            return Collections.emptyList();
+        }
+    }
+}