/*
* 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.oper;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.v3po.util.NamingContext;
import io.fd.honeycomb.translate.v3po.util.TranslateUtils;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
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.NextProtocol;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.NshMdType1StateAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.NshMdType1StateAugmentBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.MdType;
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.MdType2;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.VppNshStateBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.state.NshEntriesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.state.nsh.entries.NshEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.state.nsh.entries.NshEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.nsh.rev160624.vpp.nsh.state.nsh.entries.NshEntryKey;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.openvpp.jvpp.nsh.dto.NshEntryDump;
import org.openvpp.jvpp.nsh.dto.NshAddDelEntry;
import org.openvpp.jvpp.nsh.dto.NshEntryDetails;
import org.openvpp.jvpp.nsh.dto.NshEntryDetailsReplyDump;
import org.openvpp.jvpp.nsh.future.FutureJVppNsh;
import io.fd.honeycomb.vppnsh.impl.util.FutureJVppNshCustomizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Reader customizer responsible for nsh entry read.
to VPP.
*/
public class NshEntryReaderCustomizer extends FutureJVppNshCustomizer
implements ListReaderCustomizer {
private static final Logger LOG = LoggerFactory.getLogger(NshEntryReaderCustomizer.class);
private final NamingContext nshEntryContext;
public NshEntryReaderCustomizer(@Nonnull final FutureJVppNsh futureJVppNsh,
@Nonnull final NamingContext nshEntryContext) {
super(futureJVppNsh);
this.nshEntryContext = checkNotNull(nshEntryContext, "nshEntryContext should not be null");
}
@Override
public void merge(@Nonnull final Builder extends DataObject> builder,
@Nonnull final List readData) {
((NshEntriesBuilder) builder).setNshEntry(readData);
}
@Nonnull
@Override
public NshEntryBuilder getBuilder(@Nonnull final InstanceIdentifier id) {
return new NshEntryBuilder();
}
private void setNshEntryMdType1Augment(@Nonnull final NshEntryBuilder builder,
@Nonnull NshEntryDetails nshEntryDetails) {
final NshMdType1StateAugmentBuilder augmentBuilder = new NshMdType1StateAugmentBuilder();
augmentBuilder.setC1((long)nshEntryDetails.c1);
augmentBuilder.setC2((long)nshEntryDetails.c2);
augmentBuilder.setC3((long)nshEntryDetails.c3);
augmentBuilder.setC4((long)nshEntryDetails.c4);
builder.addAugmentation(NshMdType1StateAugment.class, augmentBuilder.build());
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier id,
@Nonnull final NshEntryBuilder builder, @Nonnull final ReadContext ctx)
throws ReadFailedException {
LOG.debug("Reading attributes for nsh entry: {}", id);
try {
final NshEntryKey key = id.firstKeyOf(NshEntry.class);
checkArgument(key != null, "could not find NshEntry key in {}", id);
final NshEntryDump request = new NshEntryDump();
final String entryName = key.getName();
if (!nshEntryContext.containsIndex(entryName, ctx.getMappingContext())) {
LOG.debug("Could not find nsh entry {} in the naming context", entryName);
return;
}
request.entryIndex = nshEntryContext.getIndex(entryName, ctx.getMappingContext());
final CompletionStage nshEntryDetailsReplyDumpCompletionStage =
getFutureJVppNsh().nshEntryDump(request);
final NshEntryDetailsReplyDump reply =
TranslateUtils.getReplyForRead(nshEntryDetailsReplyDumpCompletionStage.toCompletableFuture(), id);
if (reply == null || reply.nshEntryDetails == null || reply.nshEntryDetails.isEmpty()) {
LOG.debug("Has no Nsh Entry {} in VPP. ", key.getName());
return;
}
LOG.trace("Nsh Entry : {} attributes returned from VPP: {}", key.getName(), reply);
final NshEntryDetails nshEntryDetails = reply.nshEntryDetails.get(0);
builder.setName(entryName);
builder.setKey(key);
builder.setVersion( (short) nshEntryDetails.verOC );
builder.setLength( (short) nshEntryDetails.length );
switch(nshEntryDetails.nextProtocol) {
case 1:
builder.setNextProtocol(Ipv4.class);
break;
case 2:
builder.setNextProtocol(Ipv6.class);
break;
case 3:
builder.setNextProtocol(Ethernet.class);
break;
default:
LOG.trace("Unsupported next protocol for nsh entry: {}", nshEntryDetails.nextProtocol);
return;
}
switch(nshEntryDetails.mdType) {
case 1:
{
builder.setMdType(MdType1.class);
setNshEntryMdType1Augment(builder, nshEntryDetails);
break;
}
case 2:
{
builder.setMdType(MdType1.class);
break;
}
default:
LOG.trace("Unsupported Mdtype for nsh entry: {}", nshEntryDetails.mdType);
return;
}
builder.setNsp( (long)((nshEntryDetails.nspNsi>>8) & 0xFFFFFF));
builder.setNsi( (short)(nshEntryDetails.nspNsi & 0xFF ));
if (LOG.isTraceEnabled()) {
LOG.trace("Attributes for nsh entry {} successfully read: {}", id, builder.build());
}
} catch (VppBaseCallException e) {
LOG.warn("Failed to readCurrentAttributes for: {}", id);
throw new ReadFailedException( id, e );
}
}
@Nonnull
@Override
public List getAllIds(@Nonnull final InstanceIdentifier id,
@Nonnull final ReadContext context) throws ReadFailedException {
LOG.debug("Reading list of keys for nsh entry: {}", id);
final NshEntryDump request = new NshEntryDump();
request.entryIndex = -1; // dump call
NshEntryDetailsReplyDump reply;
try {
reply = getFutureJVppNsh().nshEntryDump(request).toCompletableFuture().get();
} catch (Exception e) {
throw new IllegalStateException("Nsh Entry dump failed", e);
}
if (reply == null || reply.nshEntryDetails == null) {
return Collections.emptyList();
}
final int nIdsLength = reply.nshEntryDetails.size();
LOG.debug("vppstate.NshEntryCustomizer.getAllIds: nIds.length={}", nIdsLength);
if (nIdsLength == 0) {
return Collections.emptyList();
}
final List allIds = new ArrayList<>(nIdsLength);
for (NshEntryDetails detail : reply.nshEntryDetails) {
final String nshName = nshEntryContext.getName(detail.entryIndex, context.getMappingContext());
LOG.debug("vppstate.NshEntryCustomizer.getAllIds: nName={}", nshName);
allIds.add(new NshEntryKey(nshName));
}
return allIds;
}
}