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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.common.translate.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.Collections;
import java.util.OptionalInt;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.MultiMappingCtxAugmentation;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.MultiNamingContexts;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.MultiNaming;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.MultiNamingKey;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.Mappings;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.mappings.Mapping;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.mappings.MappingBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.mappings.MappingKey;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.mappings.mapping.Value;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.multi.naming.context.rev160411.multi.naming.contexts.attributes.multi.naming.contexts.multi.naming.mappings.mapping.ValueBuilder;
import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.naming.context.rev160513.Contexts;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
/**
* One to many context mapping
*/
public class MultiNamingContext {
private final KeyedInstanceIdentifier<MultiNaming, MultiNamingKey>
multiNamingContextIid;
private final int startIndex;
public MultiNamingContext(@Nonnull final String instanceName, final int startIndex) {
multiNamingContextIid = InstanceIdentifier.create(Contexts.class)
.augmentation(MultiMappingCtxAugmentation.class)
.child(MultiNamingContexts.class)
.child(MultiNaming.class, new MultiNamingKey(instanceName));
this.startIndex = startIndex;
}
public synchronized void addChild(@Nonnull final String parentName, final int childIndex,
@Nonnull final String childName,
@Nonnull final MappingContext mappingContext) {
checkArgument(childIndex >= startIndex, "Index cannot be lower than start index %s", startIndex);
final KeyedInstanceIdentifier<Mapping, MappingKey> mappingIid = getMappingIid(parentName);
//uses merge to preserve previous
mappingContext.merge(mappingIid,
new MappingBuilder().setName(parentName).setValue(Collections.singletonList(new ValueBuilder()
.setIndex(childIndex)
.setName(childName)
.build())).build());
}
public synchronized void addChild(@Nonnull final String parentName,
@Nonnull final String childName,
@Nonnull final MappingContext mappingContext) {
addChild(parentName, getNextAvailableChildIndex(parentName, mappingContext), childName, mappingContext);
}
public synchronized String getChildName(@Nonnull final String parentName,
@Nonnull final int childIndex,
@Nonnull final MappingContext mappingContext) {
final Optional<Mapping> read = mappingContext.read(getMappingIid(parentName));
checkState(read.isPresent(), "Mapping not present");
return read.get().getValue().stream()
.filter(value -> value.getIndex().equals(childIndex))
.collect(RWUtils.singleItemCollector()).getName();
}
public synchronized int getChildIndex(@Nonnull final String parentName,
@Nonnull final String childName,
@Nonnull final MappingContext mappingContext) {
final Optional<Mapping> read = mappingContext.read(getMappingIid(parentName));
checkState(read.isPresent(), "Mapping not present");
return read.get().getValue().stream()
.filter(value -> value.getName().equals(childName))
.collect(RWUtils.singleItemCollector()).getIndex();
}
public synchronized void removeChild(@Nonnull final String parentName,
@Nonnull final String childName,
@Nonnull final MappingContext mappingContext) {
final Optional<Mapping> read = mappingContext.read(getMappingIid(parentName));
// ignore delete's for non-existing parent
if (read.isPresent()) {
final Mapping mapping = read.get();
// overrides old data with new(without removed child)
mappingContext.put(getMappingIid(parentName), new MappingBuilder()
.setName(mapping.getName())
.withKey(mapping.key())
.setValue(mapping.getValue()
.stream()
.filter(value -> !value.getName().equals(childName))
.collect(Collectors.toList()))
.build());
}
}
/**
* Returns next available index for mapping
*/
private int getNextAvailableChildIndex(final String parentName, final MappingContext mappingContext) {
final Optional<Mappings> read = mappingContext.read(mappingIdBase());
if (!read.isPresent()) {
return startIndex;
}
final OptionalInt max = read.get().getMapping()
.stream()
.filter(mapping -> mapping.getName().equals(parentName))
.flatMap(mapping -> mapping.getValue().stream())
.mapToInt(Value::getIndex)
.max();
if (max.isPresent()) {
return max.getAsInt() + 1;
} else {
return startIndex;
}
}
private KeyedInstanceIdentifier<Mapping, MappingKey> getMappingIid(final String name) {
return mappingIdBase().child(Mapping.class, new MappingKey(name));
}
private InstanceIdentifier<Mappings> mappingIdBase() {
return multiNamingContextIid.child(Mappings.class);
}
}
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