/*
* 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.hc2vpp.v3po.interfaces;
import com.google.common.base.Preconditions;
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.hc2vpp.common.translate.util.TagRewriteOperation;
import io.fd.hc2vpp.v3po.util.SubInterfaceUtils;
import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.vpp.jvpp.core.dto.L2InterfaceVlanTagRewrite;
import io.fd.vpp.jvpp.core.dto.L2InterfaceVlanTagRewriteReply;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import java.util.List;
import java.util.concurrent.CompletionStage;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev180319._802dot1q;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev180319.interfaces._interface.sub.interfaces.SubInterface;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev180319.rewrite.attributes.Rewrite;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev180319.rewrite.attributes.RewriteBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.vlan.rev180319.tag.rewrite.PushTags;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Writer Customizer responsible for vlan tag rewrite.
Sends {@code l2_interface_vlan_tag_rewrite} message to
* VPP.
Equivalent of invoking {@code vppctl set interface l2 tag-rewrite} command.
*/
public class RewriteCustomizer extends FutureJVppCustomizer
implements WriterCustomizer, ByteDataTranslator, JvppReplyConsumer {
private static final Logger LOG = LoggerFactory.getLogger(RewriteCustomizer.class);
private final NamingContext interfaceContext;
public RewriteCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
@Nonnull final NamingContext interfaceContext) {
super(futureJVppCore);
this.interfaceContext = Preconditions.checkNotNull(interfaceContext, "interfaceContext should not be null");
}
@Override
public void writeCurrentAttributes(final InstanceIdentifier id, final Rewrite dataAfter,
final WriteContext writeContext)
throws WriteFailedException {
final String subifName = getSubInterfaceName(id);
setTagRewrite(id, subifName, dataAfter, writeContext);
}
private static String getSubInterfaceName(final InstanceIdentifier id) {
return SubInterfaceUtils.getSubInterfaceName(id.firstKeyOf(Interface.class).getName(),
Math.toIntExact(id.firstKeyOf(SubInterface.class).getIdentifier()));
}
private void setTagRewrite(final InstanceIdentifier id, final String ifname, final Rewrite rewrite,
final WriteContext writeContext) throws WriteFailedException {
final int swIfIndex = interfaceContext.getIndex(ifname, writeContext.getMappingContext());
LOG.debug("Setting tag rewrite for interface {}(id=): {}", ifname, swIfIndex, rewrite);
final CompletionStage replyCompletionStage =
getFutureJVpp().l2InterfaceVlanTagRewrite(getTagRewriteRequest(swIfIndex, rewrite));
getReplyForWrite(replyCompletionStage.toCompletableFuture(), id);
LOG.debug("Tag rewrite for interface {}(id=) set successfully: {}", ifname, swIfIndex, rewrite);
}
private L2InterfaceVlanTagRewrite getTagRewriteRequest(final int swIfIndex, final Rewrite rewrite) {
final L2InterfaceVlanTagRewrite request = new L2InterfaceVlanTagRewrite();
request.swIfIndex = swIfIndex;
request.pushDot1Q = booleanToByte(_802dot1q.class == rewrite.getVlanType());
final List pushTags = rewrite.getPushTags();
final Short popTags = rewrite.getPopTags();
final int numberOfTagsToPop = popTags == null
? 0
: popTags.intValue();
final int numberOfTagsToPush = pushTags == null
? 0
: pushTags.size();
request.vtrOp = TagRewriteOperation.get(numberOfTagsToPop, numberOfTagsToPush).ordinal();
if (numberOfTagsToPush > 0) {
for (final PushTags tag : pushTags) {
if (tag.getIndex() == 0) {
request.tag1 = tag.getDot1qTag().getVlanId().getValue();
} else {
request.tag2 = tag.getDot1qTag().getVlanId().getValue();
}
}
}
LOG.debug("Generated tag rewrite request: {}", request);
return request;
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier id,
@Nonnull final Rewrite dataBefore,
@Nonnull final Rewrite dataAfter, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
final String subifName = getSubInterfaceName(id);
setTagRewrite(id, subifName, dataAfter, writeContext);
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier id,
@Nonnull final Rewrite dataBefore, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
final String subifName = getSubInterfaceName(id);
LOG.debug("Disabling tag rewrite for interface {}", subifName);
final Rewrite rewrite = new RewriteBuilder().build(); // rewrite without push and pops will cause delete
setTagRewrite(id, subifName, rewrite, writeContext);
}
}