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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.lisp.translate.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.InitializingReaderCustomizer;
import io.fd.honeycomb.translate.vpp.util.ByteDataTranslator;
import io.fd.honeycomb.translate.vpp.util.FutureJVppCustomizer;
import io.fd.honeycomb.translate.vpp.util.JvppReplyConsumer;
import io.fd.vpp.jvpp.VppBaseCallException;
import io.fd.vpp.jvpp.core.dto.ShowLispStatus;
import io.fd.vpp.jvpp.core.dto.ShowLispStatusReply;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import java.util.concurrent.TimeoutException;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.Lisp;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispState;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.LispStateBuilder;
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;
/**
* Customizer that handles reads of {@code LispState}
*/
public class LispStateCustomizer extends FutureJVppCustomizer
implements InitializingReaderCustomizer<LispState, LispStateBuilder>, JvppReplyConsumer, ByteDataTranslator {
private static final Logger LOG = LoggerFactory.getLogger(LispStateCustomizer.class);
public LispStateCustomizer(FutureJVppCore futureJvpp) {
super(futureJvpp);
}
@Override
public LispStateBuilder getBuilder(InstanceIdentifier<LispState> id) {
return new LispStateBuilder();
}
@Override
public void readCurrentAttributes(InstanceIdentifier<LispState> id, LispStateBuilder builder, ReadContext ctx)
throws ReadFailedException {
ShowLispStatusReply reply;
try {
reply = getReply(getFutureJVpp().showLispStatus(new ShowLispStatus()).toCompletableFuture());
} catch (TimeoutException | VppBaseCallException e) {
throw new ReadFailedException(id, e);
}
builder.setEnable(byteToBoolean(reply.featureStatus));
}
@Override
public void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final LispState readValue) {
LOG.warn("Merge is unsupported for data roots");
}
@Override
public Initialized<Lisp> init(
@Nonnull final InstanceIdentifier<LispState> id, @Nonnull final LispState readValue,
@Nonnull final ReadContext ctx) {
return Initialized.create(InstanceIdentifier.create(Lisp.class),
// set everything from LispState to LispBuilder
// this is necessary in cases, when HC connects to a running VPP with some LISP configuration. HC needs to
// reconstruct configuration based on what's present in VPP in order to support subsequent configuration changes
// without any issues
// the other reason this should work is HC persistence, so that HC after restart only performs diff (only push
// configuration that is not currently in VPP, but is persisted. If they are equal skip any VPP calls)
// updates to VPP. If this is not fully implemented (depending on VPP implementation, restoration of persisted
// configuration can fail)
new LispBuilder()
.setEnable(readValue.isEnable())
.setLispFeatureData(readValue.getLispFeatureData())
.build());
}
}
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