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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.hc2vpp.nat.read.ifc;
import static java.util.Objects.requireNonNull;
import com.google.common.base.Optional;
import io.fd.hc2vpp.common.translate.util.JvppReplyConsumer;
import io.fd.hc2vpp.common.translate.util.NamingContext;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.spi.read.InitializingReaderCustomizer;
import io.fd.honeycomb.translate.util.read.cache.DumpCacheManager;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceDetailsReplyDump;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceDump;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceOutputFeatureDetailsReplyDump;
import io.fd.vpp.jvpp.snat.dto.SnatInterfaceOutputFeatureDump;
import io.fd.vpp.jvpp.snat.future.FutureJVppSnatFacade;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.state.Interface;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
abstract class AbstractInterfaceNatCustomizer<C extends DataObject, B extends Builder<C>>
implements InitializingReaderCustomizer<C, B>, JvppReplyConsumer {
private final FutureJVppSnatFacade jvppSnat;
private final DumpCacheManager<SnatInterfaceDetailsReplyDump, Void> preRoutingDumpMgr;
private final DumpCacheManager<SnatInterfaceOutputFeatureDetailsReplyDump, Void> postRoutingDumpMgr;
private final NamingContext ifcContext;
AbstractInterfaceNatCustomizer(@Nonnull final FutureJVppSnatFacade jvppSnat,
@Nonnull final NamingContext ifcContext) {
this.jvppSnat = requireNonNull(jvppSnat, "jvppSnat should not be null");
this.ifcContext = requireNonNull(ifcContext, "ifcContext should not be null");
this.preRoutingDumpMgr = new DumpCacheManager.DumpCacheManagerBuilder<SnatInterfaceDetailsReplyDump, Void>()
.withExecutor((id, params) -> getReplyForRead(
jvppSnat.snatInterfaceDump(new SnatInterfaceDump()).toCompletableFuture(), id))
.acceptOnly(SnatInterfaceDetailsReplyDump.class)
.build();
this.postRoutingDumpMgr =
new DumpCacheManager.DumpCacheManagerBuilder<SnatInterfaceOutputFeatureDetailsReplyDump, Void>()
.withExecutor((id, params) -> getReplyForRead(
jvppSnat.snatInterfaceOutputFeatureDump(new SnatInterfaceOutputFeatureDump())
.toCompletableFuture(), id))
.acceptOnly(SnatInterfaceOutputFeatureDetailsReplyDump.class)
.build();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier<C> id,
@Nonnull final B builder,
@Nonnull final ReadContext ctx) throws ReadFailedException {
final String ifcName = getName(id);
getLog().debug("Reading NAT features on interface: {}", ifcName);
final int index = ifcContext.getIndex(ifcName, ctx.getMappingContext());
// There are no additional attributes for pre routing NAT, so it is enough to read post routing ifc mapping:
final Optional<SnatInterfaceOutputFeatureDetailsReplyDump> postRoutingDump =
postRoutingDumpMgr.getDump(id, ctx.getModificationCache(), null);
postRoutingDump.or(new SnatInterfaceOutputFeatureDetailsReplyDump()).snatInterfaceOutputFeatureDetails.stream()
.filter(snatIfcDetail -> snatIfcDetail.swIfIndex == index)
.filter(snatIfcDetail -> isExpectedNatType(snatIfcDetail.isInside))
.findFirst()
.ifPresent(snatIfcDetail -> setPostRouting(builder));
}
@Override
public boolean isPresent(final InstanceIdentifier<C> id, final C built, final ReadContext ctx)
throws ReadFailedException {
// In the post routing case, we can reuse default implementation:
if (InitializingReaderCustomizer.super.isPresent(id, built, ctx)) {
// post routing was set
return true;
}
// In the pre routing case, we need to inspect pre routing dump:
final String ifcName = getName(id);
getLog().debug("Checking NAT presence for interface: {}", ifcName);
final int index = ifcContext.getIndex(ifcName, ctx.getMappingContext());
// Cache dump for each interface under the same key since this is all ifc dump:
final Optional<SnatInterfaceDetailsReplyDump> preRoutingDump =
preRoutingDumpMgr.getDump(id, ctx.getModificationCache(), null);
// Find entries for current ifc and if is marked as inside set the builder to return presence container:
return preRoutingDump.or(new SnatInterfaceDetailsReplyDump()).snatInterfaceDetails.stream()
.filter(snatIfcDetail -> snatIfcDetail.swIfIndex == index)
.anyMatch(snatIfcDetail -> isExpectedNatType(snatIfcDetail.isInside));
// Not setting data, just marking the builder to propagate empty container to indicate presence.
}
protected String getName(final InstanceIdentifier<C> id) {
return id.firstKeyOf(Interface.class).getName();
}
abstract Logger getLog();
abstract boolean isExpectedNatType(final int isInside);
abstract void setPostRouting(final B builder);
}
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