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/*
* Copyright (c) 2016 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.honeycomb.nat.read;
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.snat.dto.SnatStaticMappingDetailsReplyDump;
import java.util.List;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.NatConfig;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.NatInstancesBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstance;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstanceBuilder;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.state.nat.instances.NatInstanceKey;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Nat instance ID is mapped to VRF-ID in VPP.
*/
final class NatInstanceCustomizer implements InitializingListReaderCustomizer<NatInstance, NatInstanceKey, NatInstanceBuilder> {
private static final Logger LOG = LoggerFactory.getLogger(NatInstanceCustomizer.class);
static final NatInstanceKey DEFAULT_VRF_ID = new NatInstanceKey(0L);
private final DumpCacheManager<SnatStaticMappingDetailsReplyDump, Void> dumpCacheManager;
NatInstanceCustomizer(
final DumpCacheManager<SnatStaticMappingDetailsReplyDump, Void> dumpCacheManager) {
this.dumpCacheManager = dumpCacheManager;
}
@Nonnull
@Override
public NatInstanceBuilder getBuilder(@Nonnull final InstanceIdentifier<NatInstance> id) {
return new NatInstanceBuilder();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier<NatInstance> id,
@Nonnull final NatInstanceBuilder builder, @Nonnull final ReadContext ctx)
throws ReadFailedException {
LOG.trace("Reading current attributes for nat-instance: {}", id);
builder.setId(id.firstKeyOf(NatInstance.class).getId());
}
@Nonnull
@Override
public List<NatInstanceKey> getAllIds(@Nonnull final InstanceIdentifier<NatInstance> id,
@Nonnull final ReadContext context) throws ReadFailedException {
LOG.trace("Listing IDs for all nat-instances");
// Find the nat instance IDs (vrf-ids) by listing all static mappings and their VRF assignment
final List<NatInstanceKey> vrfIds =
dumpCacheManager.getDump(id, context.getModificationCache(), null)
.or(new SnatStaticMappingDetailsReplyDump()).snatStaticMappingDetails.stream()
.map(detail -> detail.vrfId)
.map(vrfId -> new NatInstanceKey((long) vrfId))
.collect(Collectors.toList());
// Add default vrf id if not present
if (!vrfIds.contains(DEFAULT_VRF_ID)) {
vrfIds.add(0, DEFAULT_VRF_ID);
}
LOG.debug("List of nat-instance keys (vrf-ids): {}", vrfIds);
return vrfIds;
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<NatInstance> readData) {
((NatInstancesBuilder) builder).setNatInstance(readData);
}
@Override
public Initialized<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.NatInstance> init(@Nonnull final InstanceIdentifier<NatInstance> id,
@Nonnull final NatInstance readValue,
@Nonnull final ReadContext ctx) {
return Initialized.create(getCfgId(id),
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.NatInstanceBuilder()
.setId(readValue.getId())
.build());
}
static InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.NatInstance> getCfgId(
@Nonnull final InstanceIdentifier<NatInstance> id) {
return InstanceIdentifier.create(NatConfig.class)
.child(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.NatInstances.class)
.child(org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.NatInstance.class,
new org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.nat.rev150908.nat.config.nat.instances.NatInstanceKey(
id.firstKeyOf(NatInstance.class).getId()));
}
}
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