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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.ifc;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.spi.read.Initialized;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.honeycomb.translate.vpp.util.NamingContext;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceDetails;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceDetailsReplyDump;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.InterfaceKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang._interface.nat.rev161214.NatInterfaceAugmentation;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang._interface.nat.rev161214._interface.nat.attributes.Nat;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang._interface.nat.rev161214._interface.nat.attributes.NatBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang._interface.nat.rev161214._interface.nat.attributes.nat.Outbound;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang._interface.nat.rev161214._interface.nat.attributes.nat.OutboundBuilder;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.Augmentation;
import org.opendaylight.yangtools.yang.binding.DataContainer;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class InterfaceOutboundNatCustomizer extends AbstractInterfaceNatCustomizer<Outbound, OutboundBuilder> {
private static final Logger LOG = LoggerFactory.getLogger(InterfaceOutboundNatCustomizer.class);
InterfaceOutboundNatCustomizer(
@Nonnull final DumpCacheManager<SnatInterfaceDetailsReplyDump, Void> dumpMgr,
@Nonnull final NamingContext ifcContext) {
super(dumpMgr, ifcContext);
}
@Override
protected Logger getLog() {
return LOG;
}
@Override
void setBuilderPresence(@Nonnull final OutboundBuilder builder) {
((PresenceOutboundBuilder) builder).setPresent(true);
}
@Override
boolean isExpectedNatType(final SnatInterfaceDetails snatInterfaceDetails) {
return snatInterfaceDetails.isInside == 0;
}
@Nonnull
@Override
public OutboundBuilder getBuilder(@Nonnull final InstanceIdentifier<Outbound> id) {
return new PresenceOutboundBuilder(false);
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final Outbound readValue) {
((NatBuilder) parentBuilder).setOutbound(readValue);
}
@Nonnull
@Override
public Initialized<? extends DataObject> init(@Nonnull final InstanceIdentifier<Outbound> id,
@Nonnull final Outbound readValue,
@Nonnull final ReadContext ctx) {
final InstanceIdentifier<Outbound> cfgId =
InstanceIdentifier.create(Interfaces.class)
.child(Interface.class,
new InterfaceKey(id.firstKeyOf(
org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface.class).getName()))
.augmentation(NatInterfaceAugmentation.class)
.child(Nat.class)
.child(Outbound.class);
return Initialized.create(cfgId, readValue);
}
// TODO HONEYCOMB-270, make this better, having to fake a builder + value is just exploitation.
/**
* Special Builder to also propagate empty container into the resulting data.
*/
private static final class PresenceOutboundBuilder extends OutboundBuilder {
private volatile boolean isPresent = false;
PresenceOutboundBuilder(final boolean isPresent) {
this.isPresent = isPresent;
}
void setPresent(final boolean present) {
this.isPresent = present;
}
@Override
public Outbound build() {
final Outbound build = super.build();
return isPresent
? build
: NotPresentOutbound.NOT_PRESENT_OUTBOUND;
}
}
/**
* Fake container that returns false on equals.
*/
private static final class NotPresentOutbound implements Outbound {
private static final NotPresentOutbound NOT_PRESENT_OUTBOUND = new NotPresentOutbound();
@Override
public <E extends Augmentation<Outbound>> E getAugmentation(final Class<E> augmentationType) {
throw new UnsupportedOperationException();
}
@Override
public Class<? extends DataContainer> getImplementedInterface() {
return Outbound.class;
}
@Override
public boolean equals(final Object obj) {
// This is necessary to fake this.equals(something)
return obj == NOT_PRESENT_OUTBOUND;
}
}
}
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