Bridge domain interconnection read customizer

Change-Id: If74cf4ad2a05b3311478afc64cb54748f0d813dc
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java
new file mode 100644
index 000000000..099d4c195
--- /dev/null
+++ b/v3po/v3po2vpp/src/main/java/io/fd/honeycomb/v3po/translate/v3po/interfacesstate/L2Customizer.java
@@ -0,0 +1,119 @@
+/*
+ * 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.v3po.interfacesstate;
+
+import com.google.common.base.Preconditions;
+import io.fd.honeycomb.v3po.translate.Context;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.spi.read.ChildReaderCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.FutureJVppCustomizer;
+import io.fd.honeycomb.v3po.translate.v3po.util.NamingContext;
+import io.fd.honeycomb.v3po.translate.v3po.utils.V3poUtils;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+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.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.InterfaceKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.VppInterfaceStateAugmentationBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.L2;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.L2Builder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.interfaces.state._interface.l2.interconnection.BridgeBasedBuilder;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.openvpp.jvpp.dto.BridgeDomainDetailsReplyDump;
+import org.openvpp.jvpp.dto.BridgeDomainDump;
+import org.openvpp.jvpp.dto.BridgeDomainSwIfDetails;
+import org.openvpp.jvpp.dto.SwInterfaceDetails;
+import org.openvpp.jvpp.future.FutureJVpp;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Customizer for reading ietf-interfaces:interfaces-state/interface/iface_name/v3po:l2
+ */
+public class L2Customizer extends FutureJVppCustomizer
+        implements ChildReaderCustomizer<L2, L2Builder> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(L2Customizer.class);
+    private final NamingContext interfaceContext;
+    private final NamingContext bridgeDomainContext;
+
+    public L2Customizer(@Nonnull final FutureJVpp futureJvpp,
+                        @Nonnull final NamingContext interfaceContext,
+                        @Nonnull final NamingContext bridgeDomainContext) {
+        super(futureJvpp);
+        this.interfaceContext = Preconditions.checkNotNull(interfaceContext, "interfaceContext should not be null");
+        this.bridgeDomainContext = Preconditions.checkNotNull(bridgeDomainContext, "bridgeDomainContext should not be null");
+    }
+
+    @Override
+    public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final L2 readValue) {
+        ((VppInterfaceStateAugmentationBuilder) parentBuilder).setL2(readValue);
+    }
+
+    @Nonnull
+    @Override
+    public L2Builder getBuilder(@Nonnull final InstanceIdentifier<L2> id) {
+        return new L2Builder();
+    }
+
+    @Override
+    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<L2> id, @Nonnull final L2Builder builder,
+                                      @Nonnull final Context ctx) throws ReadFailedException {
+        LOG.debug("Reading attributes for L2: {}", id);
+        final InterfaceKey key = id.firstKeyOf(Interface.class);
+        final int ifaceId = interfaceContext.getIndex(key.getName());
+
+        final SwInterfaceDetails iface = InterfaceUtils.getVppInterfaceDetails(getFutureJVpp(), key,
+                ifaceId, ctx);
+        LOG.debug("Interface details for interface: {}, details: {}", key.getName(), iface);
+
+        final Optional<BridgeDomainSwIfDetails> bdForInterface = getBridgeDomainForInterface(ifaceId);
+        if (bdForInterface.isPresent()) {
+            final BridgeDomainSwIfDetails bdSwIfDetails = bdForInterface.get();
+            final BridgeBasedBuilder bbBuilder = new BridgeBasedBuilder();
+            bbBuilder.setBridgeDomain(bridgeDomainContext.getName(bdSwIfDetails.bdId));
+            // bbBuilder.setBridgedVirtualInterface // TODO where to find that value?
+            if (bdSwIfDetails.shg != 0) {
+                bbBuilder.setSplitHorizonGroup((short)bdSwIfDetails.shg);
+            }
+            builder.setInterconnection(bbBuilder.build());
+        }
+
+        // TODO is there a way to check if interconnection is XconnectBased?
+    }
+
+    private Optional<BridgeDomainSwIfDetails> getBridgeDomainForInterface(final int ifaceId) {
+        // We need to perform full bd dump, because there is no way
+        // to ask VPP for BD details given interface id/name (TODO add it to vpp.api?)
+        // TODO cache dump result
+        final BridgeDomainDump request = new BridgeDomainDump();
+        request.bdId = -1;
+
+        final CompletableFuture<BridgeDomainDetailsReplyDump> bdCompletableFuture =
+                getFutureJVpp().bridgeDomainSwIfDump(request).toCompletableFuture();
+        final BridgeDomainDetailsReplyDump reply = V3poUtils.getReply(bdCompletableFuture);
+
+        if (null == reply || null == reply.bridgeDomainSwIfDetails || reply.bridgeDomainSwIfDetails.isEmpty()) {
+            return Optional.empty();
+        }
+
+        // interface can be added to only one BD only
+        return reply.bridgeDomainSwIfDetails.stream().filter(a -> a.swIfIndex == ifaceId).findFirst();
+    }
+}