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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.read;
import static io.fd.honeycomb.translate.util.read.cache.EntityDumpExecutor.NO_PARAMS;
import static java.lang.String.format;
import com.google.common.base.Optional;
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.lisp.gpe.translate.service.GpeStateCheckService;
import io.fd.hc2vpp.lisp.translate.read.dump.executor.params.MappingsDumpParams;
import io.fd.hc2vpp.lisp.translate.util.EidTranslator;
import io.fd.honeycomb.translate.ModificationCache;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.spi.read.Initialized;
import io.fd.honeycomb.translate.spi.read.InitializingListReaderCustomizer;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntriesGet;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntriesGetReply;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntryPathDetails;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntryPathDetailsReplyDump;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntryPathDump;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntryVnisGet;
import io.fd.vpp.jvpp.core.dto.GpeFwdEntryVnisGetReply;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import io.fd.vpp.jvpp.core.types.GpeFwdEntry;
import io.fd.vpp.jvpp.core.types.GpeLocator;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.Gpe;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.entry.table.grouping.GpeEntryTable;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.entry.table.grouping.GpeEntryTableBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.entry.table.grouping.gpe.entry.table.GpeEntry;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.entry.table.grouping.gpe.entry.table.GpeEntryBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.entry.table.grouping.gpe.entry.table.GpeEntryKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.gpe.feature.data.grouping.GpeFeatureData;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.locator.pairs.grouping.LocatorPair;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170801.locator.pairs.grouping.LocatorPairBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev170808.MapReplyAction;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
public class GpeForwardEntryCustomizer extends FutureJVppCustomizer
implements InitializingListReaderCustomizer<GpeEntry, GpeEntryKey, GpeEntryBuilder>, JvppReplyConsumer,
EidTranslator {
private final DumpCacheManager<GpeFwdEntriesGetReply, Integer> entryDumpManager;
private final DumpCacheManager<GpeFwdEntryPathDetailsReplyDump, Integer> entryDumpCacheManager;
private final DumpCacheManager<GpeFwdEntryVnisGetReply, Void> activeVnisDumpManager;
private final NamingContext gpeEntryMappingContext;
private final GpeStateCheckService gpeStateCheckService;
public GpeForwardEntryCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
@Nonnull final GpeStateCheckService gpeStateCheckService,
@Nonnull final NamingContext gpeEntryMappingContext) {
super(futureJVppCore);
this.gpeStateCheckService = gpeStateCheckService;
this.gpeEntryMappingContext = gpeEntryMappingContext;
this.entryDumpManager = new DumpCacheManager.DumpCacheManagerBuilder<GpeFwdEntriesGetReply, Integer>()
.acceptOnly(GpeFwdEntriesGetReply.class)
.withExecutor((identifier, vni) -> {
GpeFwdEntriesGet request = new GpeFwdEntriesGet();
request.vni = vni;
return getReplyForRead(getFutureJVpp().gpeFwdEntriesGet(request).toCompletableFuture(), identifier);
}).build();
entryDumpCacheManager =
new DumpCacheManager.DumpCacheManagerBuilder<GpeFwdEntryPathDetailsReplyDump, Integer>()
.acceptOnly(GpeFwdEntryPathDetailsReplyDump.class)
.withExecutor((identifier, fwdEntryIndex) -> {
GpeFwdEntryPathDump request = new GpeFwdEntryPathDump();
request.fwdEntryIndex = fwdEntryIndex;
return getReplyForRead(getFutureJVpp().gpeFwdEntryPathDump(request).toCompletableFuture(),
identifier);
}).build();
activeVnisDumpManager = new DumpCacheManager.DumpCacheManagerBuilder<GpeFwdEntryVnisGetReply, Void>()
.acceptOnly(GpeFwdEntryVnisGetReply.class)
.withExecutor((identifier, params) -> getReplyForRead(
getFutureJVpp().gpeFwdEntryVnisGet(new GpeFwdEntryVnisGet()).toCompletableFuture(),
identifier))
.build();
}
@Nonnull
@Override
public Initialized<? extends DataObject> init(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final GpeEntry readValue,
@Nonnull final ReadContext ctx) {
return Initialized.create(InstanceIdentifier.create(Gpe.class)
.child(GpeFeatureData.class)
.child(GpeEntryTable.class)
.child(GpeEntry.class, id.firstKeyOf(GpeEntry.class)), readValue);
}
@Nonnull
@Override
public List<GpeEntryKey> getAllIds(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final ReadContext context)
throws ReadFailedException {
if (!gpeStateCheckService.isGpeEnabled(context)) {
return Collections.emptyList();
}
return activeVnis(id, context.getModificationCache())
.flatMap(vni -> getKeysForVni(id, vni, context).stream())
.collect(Collectors.toList());
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<GpeEntry> readData) {
((GpeEntryTableBuilder) builder).setGpeEntry(readData);
}
@Nonnull
@Override
public GpeEntryBuilder getBuilder(@Nonnull final InstanceIdentifier<GpeEntry> id) {
return new GpeEntryBuilder();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier<GpeEntry> id,
@Nonnull final GpeEntryBuilder builder,
@Nonnull final ReadContext ctx) throws ReadFailedException {
if (!gpeStateCheckService.isGpeEnabled(ctx)) {
return;
}
final String entryId = id.firstKeyOf(GpeEntry.class).getId();
// reads configured vni's, then reads entries for them and filter out current one
final java.util.Optional<GpeFwdEntry> entryCandicate = activeVnis(id, ctx.getModificationCache())
.flatMap(vni -> getEntriesForVni(id, vni, ctx).stream())
.filter(entry -> entryId
.equals(gpeEntryMappingContext.getName(entry.fwdEntryIndex, ctx.getMappingContext())))
.findAny();
if (entryCandicate.isPresent()) {
final GpeFwdEntry gpeFwdEntry = entryCandicate.get();
final int entryVni = gpeFwdEntry.vni;
if (!matchUndefinedEid(gpeFwdEntry.leid)) {
builder.setLocalEid(getArrayAsGpeLocalEid(MappingsDumpParams.EidType.valueOf(gpeFwdEntry.eidType),
gpeFwdEntry.leid, gpeFwdEntry.leidPrefixLen, entryVni));
}
builder.setId(entryId)
.setDpTable((long) gpeFwdEntry.dpTable)
.setRemoteEid(getArrayAsGpeRemoteEid(MappingsDumpParams.EidType.valueOf(gpeFwdEntry.eidType),
gpeFwdEntry.reid, gpeFwdEntry.reidPrefixLen, entryVni))
.setVni((long) entryVni);
final Optional<GpeFwdEntryPathDetailsReplyDump> locatorsDump =
entryDumpCacheManager.getDump(id, ctx.getModificationCache(), gpeFwdEntry.fwdEntryIndex);
// if any locators exist,it is a positive mapping
if (locatorsDump.isPresent() && locatorsDump.get().gpeFwdEntryPathDetails != null &&
!locatorsDump.get().gpeFwdEntryPathDetails.isEmpty()) {
final List<LocatorPair> pairs =
java.util.Optional.ofNullable(locatorsDump.get().gpeFwdEntryPathDetails)
.orElse(Collections.emptyList())
.stream()
.map(entry -> buildLocatorPair(entry))
.collect(Collectors.toList());
builder.setLocatorPair(pairs);
} else {
// negative otherwise
builder.setAction(MapReplyAction.forValue(gpeFwdEntry.action));
}
}
}
// not matching by specifically sized array, easier to adapt if vpp going to change size of arrays they send
// addresses , because for lisp eid there are at least 3 possible sizes(v4 - 4,mac - 6,v6 - 16)
private static boolean matchUndefinedEid(byte[] addr) {
return addr == null || Arrays.equals(addr, new byte[addr.length]);
}
private List<GpeFwdEntry> getEntriesForVni(final InstanceIdentifier<GpeEntry> id, final int vni,
final ReadContext context) {
final Optional<GpeFwdEntriesGetReply> dump = getEntiesDump(id, vni, context);
if (dump.isPresent()) {
return Arrays.stream(java.util.Optional.ofNullable(dump.get().entries).orElse(new GpeFwdEntry[]{}))
.collect(Collectors.toList());
}
return Collections.emptyList();
}
private List<GpeEntryKey> getKeysForVni(final InstanceIdentifier<GpeEntry> id, final int vni,
final ReadContext context) {
final Optional<GpeFwdEntriesGetReply> dump = getEntiesDump(id, vni, context);
if (dump.isPresent()) {
return Arrays.stream(java.util.Optional.ofNullable(dump.get().entries).orElse(new GpeFwdEntry[]{}))
.map(entry -> gpeEntryMappingContext.getName(entry.fwdEntryIndex, context.getMappingContext()))
.map(GpeEntryKey::new)
.collect(Collectors.toList());
}
return Collections.emptyList();
}
private Optional<GpeFwdEntriesGetReply> getEntiesDump(final InstanceIdentifier<GpeEntry> id, final int vni,
final ReadContext context) {
final Optional<GpeFwdEntriesGetReply> dump;
try {
dump = entryDumpManager.getDump(id, context.getModificationCache(), vni);
} catch (ReadFailedException e) {
throw new IllegalStateException(format("Unable to read Gpe entries for vni %s", vni), e);
}
return dump;
}
private LocatorPair buildLocatorPair(final GpeFwdEntryPathDetails entry) {
final GpeLocator lclLoc = entry.lclLoc;
final GpeLocator rmtLoc = entry.rmtLoc;
return new LocatorPairBuilder()
.setLocalLocator(arrayToIpAddress(!byteToBoolean(lclLoc.isIp4), lclLoc.addr))
.setRemoteLocator(arrayToIpAddress(!byteToBoolean(rmtLoc.isIp4), rmtLoc.addr))
.setWeight((short) lclLoc.weight).build();
}
private Stream<Integer> activeVnis(final InstanceIdentifier<GpeEntry> id,
final ModificationCache cache) throws ReadFailedException {
final int[] vnis = activeVnisDumpManager.getDump(id, cache, NO_PARAMS).or(() -> {
final GpeFwdEntryVnisGetReply reply = new GpeFwdEntryVnisGetReply();
reply.vnis = new int[0];
return reply;
}).vnis;
return Arrays.stream(vnis).boxed();
}
}
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