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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.context.util;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import com.google.common.base.Optional;
import io.fd.honeycomb.translate.MappingContext;
import io.fd.honeycomb.translate.util.RWUtils;
import java.util.stream.Collector;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.AdjacenciesIdentificationContexts;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.AdjacenciesIdentification;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.AdjacenciesIdentificationKey;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.Mappings;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.mappings.Mapping;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.mappings.MappingBuilder;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.mappings.MappingKey;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.mappings.mapping.EidIdentificatorPair;
import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.adjacencies.identification.context.rev160801.adjacencies.identification.context.attributes.adjacencies.identification.contexts.adjacencies.identification.mappings.mapping.EidIdentificatorPairBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.lisp.rev161214.MappingId;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
public class AdjacenciesMappingContext {
private static final Collector<Mapping, ?, Mapping> SINGLE_ITEM_COLLECTOR = RWUtils.singleItemCollector();
private final KeyedInstanceIdentifier<AdjacenciesIdentification, AdjacenciesIdentificationKey>
namingContextIid;
/**
* Create new naming context
*
* @param instanceName name of this context instance. Will be used as list item identifier within context data tree
*/
public AdjacenciesMappingContext(@Nonnull final String instanceName) {
namingContextIid = InstanceIdentifier.create(AdjacenciesIdentificationContexts.class).child(
AdjacenciesIdentification.class, new AdjacenciesIdentificationKey(instanceName));
}
/**
* Retrieve name for mapping stored provided mappingContext instance.
*
* @param localEidId {@code MappingId} for local eid
* @param remoteEidId {@code MappingId} for remote eid
* @param mappingContext mapping context providing context data for current transaction
* @return name mapped to provided index
*/
@Nonnull
public synchronized String getAdjacencyId(
@Nonnull final String localEidId,
@Nonnull final String remoteEidId,
@Nonnull final MappingContext mappingContext) {
final Optional<Mappings> read = mappingContext.read(namingContextIid.child(Mappings.class));
checkState(read.isPresent(), "No adjacencies mappings stored");
return read.get().getMapping().stream()
.filter(mapping -> isSame(pairForCombination(localEidId, remoteEidId), mapping))
.collect(SINGLE_ITEM_COLLECTOR).getId();
}
private boolean isSame(final EidIdentificatorPair currentPair, final Mapping mapping) {
// EidIdentificatorPair is container so it needs to be compared like this
final EidIdentificatorPair mappingPair = mapping.getEidIdentificatorPair();
return currentPair.getLocalEidId().equals(mappingPair.getLocalEidId())
&& currentPair.getRemoteEidId().equals(mappingPair.getRemoteEidId());
}
private EidIdentificatorPair pairForCombination(final @Nonnull String localEidId,
final @Nonnull String remoteEidId) {
return new EidIdentificatorPairBuilder()
.setLocalEidId(new MappingId(localEidId))
.setRemoteEidId(new MappingId(remoteEidId))
.build();
}
/**
* Check whether mapping is present for index.
*
* @param localEidId {@code MappingId} for local eid
* @param remoteEidId {@code MappingId} for remote eid
* @param mappingContext mapping context providing context data for current transaction
* @return true if present, false otherwise
*/
public synchronized boolean containsId(
@Nonnull final String localEidId,
@Nonnull final String remoteEidId,
@Nonnull final MappingContext mappingContext) {
final Optional<Mappings> read = mappingContext.read(namingContextIid.child(Mappings.class));
return read.isPresent() &&
read.get().getMapping()
.stream()
.anyMatch(mapping -> isSame(pairForCombination(localEidId, remoteEidId), mapping));
}
/**
* Add mapping to current context
*
* @param index index of a mapped item
* @param localEidId {@code MappingId} for local eid
* @param remoteEidId {@code MappingId} for remote eid
* @param mappingContext mapping context providing context data for current transaction
*/
public synchronized void addEidPair(
@Nonnull final String index,
@Nonnull final String localEidId,
@Nonnull final String remoteEidId,
final MappingContext mappingContext) {
final KeyedInstanceIdentifier<Mapping, MappingKey> mappingIid = getMappingIid(index);
mappingContext.put(mappingIid, new MappingBuilder().setId(index).setEidIdentificatorPair(
pairForCombination(localEidId, remoteEidId)).build());
}
private KeyedInstanceIdentifier<Mapping, MappingKey> getMappingIid(final String index) {
return namingContextIid.child(Mappings.class).child(Mapping.class, new MappingKey(index));
}
/**
* Remove mapping from current context
*
* @param index identificator of a mapped item
* @param mappingContext mapping context providing context data for current transaction
*/
public synchronized void removeForIndex(@Nonnull final String index, final MappingContext mappingContext) {
mappingContext.delete(getMappingIid(index));
}
/**
* Returns index value associated with the given name.
*
* @param index index whitch should value sits on
* @param mappingContext mapping context providing context data for current transaction
* @return integer index value matching supplied name
* @throws IllegalArgumentException if name was not found
*/
public synchronized EidIdentificatorPair getEidPair(@Nonnull final String index,
final MappingContext mappingContext) {
final Optional<Mapping> read = mappingContext.read(getMappingIid(index));
checkArgument(read.isPresent(), "No mapping stored for index: %s", index);
return read.get().getEidIdentificatorPair();
}
/**
* Check whether mapping is present for name.
*
* @param index index of a mapped item
* @param mappingContext mapping context providing context data for current transaction
* @return true if present, false otherwise
*/
public synchronized boolean containsEidPairForIndex(@Nonnull final String index,
@Nonnull final MappingContext mappingContext) {
return mappingContext.read(getMappingIid(index)).isPresent();
}
}
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