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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.mpls;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.MplsOperationsType.ImposeAndForward;
import static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.MplsOperationsType.PopAndLookup;
import static org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.MplsOperationsType.SwapAndForward;
import io.fd.hc2vpp.common.translate.util.NamingContext;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
import io.fd.honeycomb.translate.write.WriteContext;
import io.fd.honeycomb.translate.write.WriteFailedException;
import io.fd.vpp.jvpp.core.future.FutureJVppCore;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.mpls.rev171120.LookupType;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.mpls.rev171120.StaticLspVppLookupAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.mpls.rev171120.VppLabelLookupAttributes;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.MplsOperationsType;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702._static.lsp.top.Config;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.routing.mpls._static.lsps.StaticLsp;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.mpls._static.rev170702.routing.mpls._static.lsps.StaticLspKey;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Selects specific {@link LspWriter} based on {@link MplsOperationsType} and {@link LookupType}.
*/
final class StaticLspCustomizer implements ListWriterCustomizer<StaticLsp, StaticLspKey>, LspWriter {
private static final Logger LOG = LoggerFactory.getLogger(StaticLspCustomizer.class);
private final ImposeAndForwardWriter imposeAndForward;
private final MplsLookupWriter mplsLookup;
private final Ipv4LookupWriter ipv4Lookup;
private final MplsSwapWriter mplsSwap;
StaticLspCustomizer(@Nonnull final FutureJVppCore vppApi, @Nonnull NamingContext interfaceContext) {
checkNotNull(vppApi, "vppApi should not be null");
checkNotNull(interfaceContext, "interfaceContext should not be null");
this.imposeAndForward = new ImposeAndForwardWriter(vppApi, interfaceContext);
this.mplsLookup = new MplsLookupWriter(vppApi);
this.ipv4Lookup = new Ipv4LookupWriter(vppApi);
this.mplsSwap = new MplsSwapWriter(vppApi, interfaceContext);
}
@Override
public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<StaticLsp> id,
@Nonnull final StaticLsp dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.debug("Adding MPLS LSP: {}", dataAfter);
write(id, dataAfter, writeContext.getMappingContext(), true);
LOG.debug("MPLS LSP successfully configured: {}", dataAfter);
}
@Override
public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<StaticLsp> id,
@Nonnull final StaticLsp dataBefore,
@Nonnull final StaticLsp dataAfter,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.debug("Updating MPLS LSP: before={} after={}", dataBefore, dataAfter);
write(id, dataBefore, writeContext.getMappingContext(), false);
write(id, dataAfter, writeContext.getMappingContext(), true);
LOG.debug("MPLS LSP successfully configured: {}", dataAfter);
}
@Override
public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<StaticLsp> id,
@Nonnull final StaticLsp dataBefore,
@Nonnull final WriteContext writeContext) throws WriteFailedException {
LOG.debug("Removing MPLS LSP: {}", dataBefore);
write(id, dataBefore, writeContext.getMappingContext(), false);
LOG.debug("MPLS LSP successfully removed: {}", dataBefore);
}
@Override
public void write(@Nonnull final InstanceIdentifier<StaticLsp> id, @Nonnull final StaticLsp data,
@Nonnull final MappingContext ctx, final boolean isAdd) throws WriteFailedException {
final Config config = data.getConfig();
checkArgument(config != null, "Config node of static-lsp is missing.");
final MplsOperationsType operation = config.getOperation();
if (ImposeAndForward.equals(operation)) {
imposeAndForward.write(id, data, ctx, isAdd);
} else if (PopAndLookup.equals(operation)) {
final VppLabelLookupAttributes vppAttributes = config.augmentation(StaticLspVppLookupAugmentation.class);
checkArgument(vppAttributes != null && vppAttributes.getLabelLookup() != null,
"Configuring pop-and-lookup operation but label-lookup leaf is missing");
final LookupType type = vppAttributes.getLabelLookup().getType();
if (LookupType.Ipv4.equals(type)) {
ipv4Lookup.write(id, data, ctx, isAdd);
} else if (LookupType.Mpls.equals(type)) {
mplsLookup.write(id, data, ctx, isAdd);
} else {
throw new IllegalArgumentException("Unsupported lookup type: " + type);
}
} else if (SwapAndForward.equals(operation)) {
mplsSwap.write(id, data, ctx, isAdd);
} else {
throw new IllegalArgumentException("Unsupported operation: " + operation);
}
}
}
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