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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.lisp.gpe.translate.write;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeEntryIdentifier.fromEntry;
import static io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeLocatorPair.fromLocatorPair;
import static java.util.Objects.nonNull;
import io.fd.hc2vpp.common.translate.util.FutureJVppCustomizer;
import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
import io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeEntryMappingContext;
import io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeLocatorPairMappingContext;
import io.fd.hc2vpp.lisp.gpe.translate.service.GpeStateCheckService;
import io.fd.hc2vpp.lisp.translate.read.dump.executor.params.MappingsDumpParams.EidType;
import io.fd.hc2vpp.lisp.translate.util.EidTranslator;
import io.fd.honeycomb.translate.MappingContext;
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.GpeAddDelFwdEntry;
import io.fd.vpp.jvpp.core.dto.GpeAddDelFwdEntryReply;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import io.fd.vpp.jvpp.core.types.GpeLocator;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Stream;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.GpeEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.GpeEntryKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.gpe.entry.LocalEid;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.gpe.entry.LocatorPairs;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.gpe.entry.RemoteEid;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.locator.pair.LocatorPair;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
public class GpeForwardEntryCustomizer extends FutureJVppCustomizer
implements ListWriterCustomizer<GpeEntry, GpeEntryKey>, EidTranslator, JvppReplyConsumer {
private final GpeStateCheckService gpeStateCheckService;
private final GpeEntryMappingContext entryMappingCtx;
private final GpeLocatorPairMappingContext locatorPairCtx;
public GpeForwardEntryCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
@Nonnull final GpeStateCheckService gpeStateCheckService,
@Nonnull final GpeEntryMappingContext entryMappingCtx,
@Nonnull final GpeLocatorPairMappingContext locatorPairCtx) {
super(futureJVppCore);
this.gpeStateCheckService = gpeStateCheckService;
this.entryMappingCtx = entryMappingCtx;
this.locatorPairCtx = locatorPairCtx;
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final GpeEntry dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
gpeStateCheckService.checkGpeEnabledAfter(writeContext);
getReplyForWrite(sendRequestAndMap(true, dataAfter, writeContext.getMappingContext()).toCompletableFuture(),
id);
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final GpeEntry dataBefore,
@Nonnull final GpeEntry dataAfter, @Nonnull final WriteContext writeContext)
throws WriteFailedException {
gpeStateCheckService.checkGpeEnabledAfter(writeContext);
getReplyForDelete(sendRequestAndMap(false, dataBefore, writeContext.getMappingContext()).toCompletableFuture(),
id);
getReplyForUpdate(sendRequestAndMap(true, dataAfter, writeContext.getMappingContext()).toCompletableFuture(),
id, dataBefore, dataAfter);
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final GpeEntry dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
gpeStateCheckService.checkGpeEnabledBefore(writeContext);
getReplyForDelete(sendRequestAndMap(false, dataBefore, writeContext.getMappingContext()).toCompletableFuture(),
id);
}
private CompletableFuture<GpeAddDelFwdEntryReply> sendRequestAndMap(final boolean add,
final GpeEntry data,
final MappingContext mappingContext) {
final CompletableFuture<GpeAddDelFwdEntryReply> reply =
getFutureJVpp().gpeAddDelFwdEntry(bindRequest(add, data)).toCompletableFuture();
/*
* sync to disallow synchronization issues
*/
synchronized (entryMappingCtx) {
synchronized (locatorPairCtx) {
if (add) {
entryMappingCtx.addMapping(data.getId(), fromEntry(data), mappingContext);
Optional.ofNullable(data.getLocatorPairs()).orElse(Collections.emptyList()).forEach(
locatorPair -> locatorPairCtx
.addMapping(data.getId(), locatorPair.getId(), fromLocatorPair(locatorPair),
mappingContext));
} else {
entryMappingCtx.removeMapping(data.getId(), mappingContext);
locatorPairCtx.removeMapping(data.getId(), mappingContext);
}
}
}
return reply;
}
private GpeAddDelFwdEntry bindRequest(final boolean add, @Nonnull final GpeEntry entry) {
final GpeAddDelFwdEntry request = new GpeAddDelFwdEntry();
request.isAdd = booleanToByte(add);
request.vni = entry.getVni().byteValue();
request.dpTable = entry.getDpTable().byteValue();
final LocalEid localEid = Optional.ofNullable(entry.getLocalEid())
.orElseThrow(() -> new IllegalArgumentException("Local eid cannot be null"));
final RemoteEid remoteEid = Optional.ofNullable(entry.getRemoteEid())
.orElseThrow(() -> new IllegalArgumentException("Remote eid cannot be null"));
final EidType localEidType = getEidType(localEid);
final EidType remoteEidType = getEidType(remoteEid);
checkArgument(localEidType == remoteEidType, "Different eid type detected - Local[%s]/Remote[%s]",
localEidType,
remoteEidType);
request.eidType = (byte) localEidType.getVppTypeBinding();
request.lclEid = getEidAsByteArray(localEid);
request.lclLen = getPrefixLength(localEid);
request.rmtEid = getEidAsByteArray(remoteEid);
request.rmtLen = getPrefixLength(remoteEid);
if (nonNull(entry.getAction())) {
request.action = (byte) entry.getAction().getIntValue();
}
if (nonNull(entry.getLocatorPairs())) {
request.locs = toRequestLocators(entry.getLocatorPairs());
request.locNum = request.locs.length;
}
return request;
}
// Locators vector must be ordered in way that local locators are first ,then remote.
// Pair is translated to two locators, one(local) with local address and weight, second one(remote) with remote
// address
private GpeLocator[] toRequestLocators(final List<LocatorPairs> pairs) {
return pairs.stream()
.flatMap(locatorPairContainer -> {
final LocatorPair locatorPair =
checkNotNull(locatorPairContainer.getLocatorPair(), "Locator pair cannot be null");
final boolean isLocalIpv6 = isIpv6(locatorPair.getLocalLocator());
final boolean isRemoteIpv6 = isIpv6(locatorPair.getRemoteLocator());
checkArgument(isLocalIpv6 == isRemoteIpv6,
"Invalid combination for locator pair - Local[ipv6=%s]/Remote[ipv6=%s]", isLocalIpv6,
isRemoteIpv6);
GpeLocator localLocator = new GpeLocator();
localLocator.addr = ipAddressToArray(locatorPair.getLocalLocator());
localLocator.isIp4 = booleanToByte(!isLocalIpv6);
localLocator.weight = locatorPair.getWeight().byteValue();
GpeLocator remoteLocator = new GpeLocator();
remoteLocator.addr = ipAddressToArray(locatorPair.getRemoteLocator());
remoteLocator.isIp4 = booleanToByte(!isRemoteIpv6);
return Stream.of(localLocator, remoteLocator);
})
.sorted((first, second) -> {
if (first.weight == 0 && second.weight == 0) {
return 0;
} else if (first.weight == 0) {
return 1;
} else {
return -1;
}
}).toArray(GpeLocator[]::new);
}
}
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