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/*
* Copyright (c) 2016 Intel 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.vppnsh.impl.config;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
import io.fd.honeycomb.translate.v3po.util.ByteDataTranslator;
import io.fd.honeycomb.translate.v3po.util.JvppReplyConsumer;
import io.fd.honeycomb.translate.v3po.util.NamingContext;
import io.fd.honeycomb.translate.v3po.util.WriteTimeoutException;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.honeycomb.vppnsh.impl.util.FutureJVppNshCustomizer;
import java.util.concurrent.CompletionStage;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.Ethernet;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.Ipv4;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.Ipv6;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.MdType1;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.NshMdType1Augment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.nsh.entries.NshEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.nsh.entries.NshEntryKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.openvpp.jvpp.nsh.dto.NshAddDelEntry;
import org.openvpp.jvpp.nsh.dto.NshAddDelEntryReply;
import org.openvpp.jvpp.nsh.future.FutureJVppNsh;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Writer customizer responsible for NshEntry create/delete.
*/
public class NshEntryWriterCustomizer extends FutureJVppNshCustomizer
implements ListWriterCustomizer<NshEntry, NshEntryKey>, ByteDataTranslator, JvppReplyConsumer {
private static final Logger LOG = LoggerFactory.getLogger(NshEntryWriterCustomizer.class);
private final NamingContext nshEntryContext;
public NshEntryWriterCustomizer(@Nonnull final FutureJVppNsh futureJVppNsh,
@Nonnull final NamingContext nshEntryContext) {
super(futureJVppNsh);
this.nshEntryContext = checkNotNull(nshEntryContext, "nshEntryContext should not be null");
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<NshEntry> id,
@Nonnull final NshEntry dataAfter, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
LOG.debug("Creating nsh entry: iid={} dataAfter={}", id, dataAfter);
try {
final int newEntryIndex =
nshAddDelEntry(true, id, dataAfter, ~0 /* value not present */, writeContext.getMappingContext());
// Add nsh entry name <-> vpp index mapping to the naming context:
nshEntryContext.addName(newEntryIndex, dataAfter.getName(), writeContext.getMappingContext());
LOG.debug("Successfully created nsh entry(id={]): iid={} dataAfter={}", newEntryIndex, id, dataAfter);
} catch (VppBaseCallException e) {
throw new WriteFailedException.CreateFailedException(id, dataAfter, e);
}
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<NshEntry> id,
@Nonnull final NshEntry dataBefore, @Nonnull final NshEntry dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
throw new UnsupportedOperationException("Nsh entry update is not supported");
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<NshEntry> id,
@Nonnull final NshEntry dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.debug("Removing nsh entry: iid={} dataBefore={}", id, dataBefore);
final String entryName = dataBefore.getName();
checkState(nshEntryContext.containsIndex(entryName, writeContext.getMappingContext()),
"Removing nsh entry {}, but index could not be found in the nsh entry context", entryName);
final int entryIndex = nshEntryContext.getIndex(entryName, writeContext.getMappingContext());
try {
nshAddDelEntry(false, id, dataBefore, entryIndex, writeContext.getMappingContext());
// Remove deleted interface from interface context:
nshEntryContext.removeName(dataBefore.getName(), writeContext.getMappingContext());
LOG.debug("Successfully removed nsh entry(id={]): iid={} dataAfter={}", entryIndex, id, dataBefore);
} catch (VppBaseCallException e) {
throw new WriteFailedException.DeleteFailedException(id, e);
}
}
private int nshAddDelEntry(final boolean isAdd, @Nonnull final InstanceIdentifier<NshEntry> id,
@Nonnull final NshEntry entry, final int entryId, final MappingContext ctx)
throws VppBaseCallException, WriteTimeoutException {
final CompletionStage<NshAddDelEntryReply> createNshEntryReplyCompletionStage =
getFutureJVppNsh().nshAddDelEntry(getNshAddDelEntryRequest(isAdd, entryId, entry, ctx));
final NshAddDelEntryReply reply =
getReplyForWrite(createNshEntryReplyCompletionStage.toCompletableFuture(), id);
return reply.entryIndex;
}
private void getNshEntryMdType1Request(@Nonnull final NshEntry entry,
@Nonnull NshAddDelEntry request) {
final NshMdType1Augment nshMdType1Augment = entry.getAugmentation(NshMdType1Augment.class);
if (nshMdType1Augment != null) {
request.c1 = (int) nshMdType1Augment.getC1().longValue();
request.c2 = (int) nshMdType1Augment.getC2().longValue();
request.c3 = (int) nshMdType1Augment.getC3().longValue();
request.c4 = (int) nshMdType1Augment.getC4().longValue();
}
}
private NshAddDelEntry getNshAddDelEntryRequest(final boolean isAdd, final int entryIndex,
@Nonnull final NshEntry entry,
@Nonnull final MappingContext ctx) {
final NshAddDelEntry request = new NshAddDelEntry();
request.isAdd = booleanToByte(isAdd);
request.verOC = (byte) entry.getVersion().shortValue();
request.length = (byte) entry.getLength().intValue();
if (entry.getNextProtocol() == Ipv4.class) {
request.nextProtocol = 1;
} else if (entry.getNextProtocol() == Ipv6.class) {
request.nextProtocol = 2;
} else if (entry.getNextProtocol() == Ethernet.class) {
request.nextProtocol = 3;
} else {
request.nextProtocol = 0;
}
if (entry.getMdType() == MdType1.class) {
request.mdType = 1;
getNshEntryMdType1Request(entry, request);
} else if (entry.getMdType() == MdType1.class) {
request.mdType = 2;
} else {
request.mdType = 0;
}
request.nspNsi = (entry.getNsp().intValue() << 8) | entry.getNsi();
return request;
}
}
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