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/*
* 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.jvpp.core.dto.MplsTableAddDel;
import io.fd.jvpp.core.dto.SwInterfaceSetMplsEnable;
import io.fd.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);
}
}
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