1 files changed, 114 insertions, 0 deletions
diff --git a/mpls/impl/src/main/java/io/fd/hc2vpp/mpls/MplsInterfaceCustomizer.java b/mpls/impl/src/main/java/io/fd/hc2vpp/mpls/MplsInterfaceCustomizer.java
new file mode 100644
index 000000000..718a69924
--- /dev/null
+++ b/mpls/impl/src/main/java/io/fd/hc2vpp/mpls/MplsInterfaceCustomizer.java
@@ -0,0 +1,114 @@
+/*
+ * 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.mpls;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static java.util.Objects.requireNonNull;
+
+import io.fd.hc2vpp.common.translate.util.ByteDataTranslator;
+import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
+import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
+import io.fd.hc2vpp.common.translate.util.NamingContext;
+import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.vpp.jvpp.core.dto.MplsTableAddDel;
+import io.fd.vpp.jvpp.core.dto.SwInterfaceSetMplsEnable;
+import io.fd.vpp.jvpp.core.future.FutureJVppCore;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls.rev170702.interfaces.mpls.Interface;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls.rev170702.interfaces.mpls.InterfaceKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class MplsInterfaceCustomizer extends FutureJVppCustomizer
+    implements ListWriterCustomizer<Interface, InterfaceKey>, JvppReplyConsumer, ByteDataTranslator {
+
+    private static final Logger LOG = LoggerFactory.getLogger(MplsInterfaceCustomizer.class);
+
+    private final NamingContext ifcContext;
+
+    MplsInterfaceCustomizer(@Nonnull final FutureJVppCore vppApi, @Nonnull final NamingContext ifcContext) {
+        super(vppApi);
+        this.ifcContext = requireNonNull(ifcContext, "ifcContext should not be null");
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Interface> id,
+                                       @Nonnull final Interface ifc,
+                                       @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        final String swIfName = ifc.getName();
+        final int swIfIndex = ifcContext.getIndex(swIfName, writeContext.getMappingContext());
+        checkArgument(ifc.getConfig() != null, "MPLS interface configuration missing");
+        final Boolean enabled = ifc.getConfig().isEnabled();
+        LOG.debug("Configuring MPLS on interface {}(id={}): enabled={}", swIfName, swIfIndex, enabled);
+
+        // The MPLS default table must also be explicitly created via the API before we enable it on interface
+        // If table already exists, request is ignored by VPP.
+        // In future, it might be useful to implement MPLS table management (HC2VPP-260).
+        createDefaultMplsTable(id);
+
+        // ietf-mpls does not define config node as mandatory child of MPLS interface list
+        setInterfaceMplsState(id, swIfName, swIfIndex, enabled);
+
+        LOG.debug("MPLS successfully configured on interface {}(id={})", swIfName, swIfIndex);
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Interface> id,
+                                        @Nonnull final Interface dataBefore,
+                                        @Nonnull final Interface dataAfter, @Nonnull final WriteContext writeContext)
+        throws WriteFailedException {
+        writeCurrentAttributes(id, dataAfter, writeContext);
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Interface> id,
+                                        @Nonnull final Interface ifc,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        final String swIfName = ifc.getName();
+        final int swIfIndex = ifcContext.getIndex(swIfName, writeContext.getMappingContext());
+        LOG.debug("Disabling MPLS on interface {}(id={})", swIfName, swIfIndex);
+
+        // Map delete to MPLS disable regardless of previous MPLS config:
+        setInterfaceMplsState(id, swIfName, swIfIndex, false);
+
+        LOG.debug("MPLS successfully disabled on interface {}(id={})", swIfName, swIfIndex);
+    }
+
+    private void createDefaultMplsTable(@Nonnull final InstanceIdentifier<Interface> id) throws WriteFailedException {
+        final MplsTableAddDel request = new MplsTableAddDel();
+        // Map delete to MPLS disable regardless of previous MPLS config:
+        request.mtIsAdd = 1;
+        request.mtTableId = 0;
+        request.mtName = new byte[0];
+        LOG.trace("Creating default MPLS table", request);
+        getReplyForWrite(getFutureJVpp().mplsTableAddDel(request).toCompletableFuture(), id);
+
+    }
+
+    private void setInterfaceMplsState(@Nonnull final InstanceIdentifier<Interface> id, @Nonnull final String swIfName,
+                                       final int swIfIndex, final boolean enabled) throws WriteFailedException {
+        final SwInterfaceSetMplsEnable request = new SwInterfaceSetMplsEnable();
+        // Map delete to MPLS disable regardless of previous MPLS config:
+        request.enable = booleanToByte(enabled);
+        request.swIfIndex = swIfIndex;
+        LOG.trace("Updating MPLS flag for interface {}(id={}): {}", swIfName, swIfIndex, request);
+        getReplyForWrite(getFutureJVpp().swInterfaceSetMplsEnable(request).toCompletableFuture(), id);
+    }
+}