1 files changed, 266 insertions, 0 deletions
diff --git a/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/read/GpeForwardEntryCustomizer.java b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/read/GpeForwardEntryCustomizer.java
new file mode 100644
index 000000000..90ab65bad
--- /dev/null
+++ b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/read/GpeForwardEntryCustomizer.java
@@ -0,0 +1,266 @@
+/*
+ * 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.hc2vpp.lisp.gpe.translate.ctx.GpeEntryIdentifier.fromDumpDetail;
+import static io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeLocatorPair.fromDumpDetail;
+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.lisp.gpe.translate.ctx.GpeEntryIdentifier;
+import io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeEntryMappingContext;
+import io.fd.hc2vpp.lisp.gpe.translate.ctx.GpeLocatorPair;
+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;
+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 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.honeycomb.params.xml.ns.yang.gpe.entry.identification.context.rev170517.gpe.entry.identification.context.attributes.gpe.entry.identification.contexts.gpe.entry.identification.mappings.mapping.GpeEntryIdentificator;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.mapping.LocatorPairMapping;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.Gpe;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.GpeEntryTable;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.GpeEntryTableBuilder;
+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.GpeEntryBuilder;
+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.LocatorPairs;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.entry.table.grouping.gpe.entry.table.gpe.entry.LocatorPairsBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.gpe.feature.data.grouping.GpeFeatureData;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.gpe.rev170518.locator.pair.LocatorPairBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev170315.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 GpeEntryMappingContext gpeEntryMappingContext;
+    private final GpeLocatorPairMappingContext gpeLocatorsMappingContext;
+    private final GpeStateCheckService gpeStateCheckService;
+
+    public GpeForwardEntryCustomizer(@Nonnull final FutureJVppCore futureJVppCore,
+                                     @Nonnull final GpeStateCheckService gpeStateCheckService,
+                                     @Nonnull final GpeEntryMappingContext gpeEntryMappingContext,
+                                     @Nonnull final GpeLocatorPairMappingContext gpeLocatorsMappingContext) {
+        super(futureJVppCore);
+        this.gpeStateCheckService = gpeStateCheckService;
+        this.gpeEntryMappingContext = gpeEntryMappingContext;
+        this.gpeLocatorsMappingContext = gpeLocatorsMappingContext;
+        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();
+
+        final GpeEntryIdentificator identificator =
+                gpeEntryMappingContext.getIdentificatorById(entryId, ctx.getMappingContext());
+
+        // 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 -> fromDumpDetail(entry).isSame(identificator))
+                .findAny();
+
+        if (entryCandicate.isPresent()) {
+            final GpeFwdEntry gpeFwdEntry = entryCandicate.get();
+
+            final int entryVni = gpeFwdEntry.vni;
+            builder.setId(entryId)
+                    .setDpTable((long) gpeFwdEntry.dpTable)
+                    .setLocalEid(getArrayAsGpeLocalEid(MappingsDumpParams.EidType.valueOf(gpeFwdEntry.eidType),
+                            gpeFwdEntry.leid, gpeFwdEntry.leidPrefixLen, entryVni))
+                    .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<LocatorPairs> pairs =
+                        java.util.Optional.ofNullable(locatorsDump.get().gpeFwdEntryPathDetails)
+                                .orElse(Collections.emptyList())
+                                .stream()
+                                .map(entry -> {
+                                    final GpeLocatorPair gpePair = fromDumpDetail(entry);
+                                    final LocatorPairMapping mapping = gpeLocatorsMappingContext
+                                            .getMapping(entryId, gpePair, ctx.getMappingContext());
+                                    return buildLocatorPair(entry, gpePair, mapping);
+                                }).collect(Collectors.toList());
+                builder.setLocatorPairs(pairs);
+            } else {
+                // negative otherwise
+                builder.setAction(MapReplyAction.forValue(gpeFwdEntry.action));
+            }
+        }
+    }
+
+    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(GpeEntryIdentifier::fromDumpDetail)
+                    .map(identifier -> gpeEntryMappingContext
+                            .getIdByEntryIdentifier(identifier, 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 LocatorPairs buildLocatorPair(final GpeFwdEntryPathDetails entry, final GpeLocatorPair gpePair,
+                                          final LocatorPairMapping mapping) {
+        return new LocatorPairsBuilder()
+                .setId(mapping.getId())
+                .setLocatorPair(new LocatorPairBuilder()
+                        .setLocalLocator(gpePair.getLocalAddress())
+                        .setRemoteLocator(gpePair.getRemoteAddress())
+                        .setWeight((short) entry.lclLoc.weight)
+                        .build())
+                .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();
+    }
+}