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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.test.tools.factories;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Optional;
import com.google.common.collect.Iterables;
import io.fd.honeycomb.translate.util.JsonUtils;
import java.io.IOException;
import java.util.AbstractMap;
import java.util.Map;
import javax.annotation.Nonnull;
import org.opendaylight.controller.md.sal.binding.impl.BindingToNormalizedNodeCodec;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
import org.opendaylight.yangtools.yang.data.util.AbstractModuleStringInstanceIdentifierCodec;
import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;
import org.opendaylight.yangtools.yang.model.api.SchemaNode;
/**
* Common logic for reading of yang data
*/
abstract class YangDataFactory {
final SchemaContext schemaContext;
final BindingToNormalizedNodeCodec serializer;
final AbstractModuleStringInstanceIdentifierCodec iidParser;
YangDataFactory(@Nonnull final SchemaContext schemaContext,
@Nonnull final BindingToNormalizedNodeCodec serializer,
@Nonnull final AbstractModuleStringInstanceIdentifierCodec iidParser) {
this.schemaContext = checkNotNull(schemaContext, "SchemaContext cannot be null");
this.serializer = checkNotNull(serializer, "Serializer cannot be null");
this.iidParser = checkNotNull(iidParser, "Instance identifier parser cannot be null");
}
DataObject getDataForNode(final YangInstanceIdentifier nodeYangIdentifier,
final String resourcePath,
final DataNodeContainer parentSchema)
throws DeserializationException, IOException {
// Reads resources from provided resource path
final ContainerNode rootData = getCheckedRootData(resourcePath, parentSchema);
// Now transform the single child from JSON into BA format
final DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?> actualData =
extractCheckedSingleChild(rootData);
return getCheckedBinding(nodeYangIdentifier, actualData).getValue();
}
private ContainerNode getCheckedRootData(final String resourcePath, final DataNodeContainer parentSchema)
throws IOException {
// TODO the cast to SchemaNode is dangerous and would not work for Augments, Choices and some other nodes maybe. At least check
// TODO not sure if this is true, while testing this code was working fine event while processing choices/cases,
// TODO only problem is to find suitable codec that can process cases,etc
// Transform JSON into NormalizedNode
final ContainerNode rootData = JsonUtils.readJson(schemaContext,
checkNotNull(this.getClass().getResource(resourcePath), "Unable to find resource %s", resourcePath)
.openStream(), ((SchemaNode) parentSchema));
checkArgument(rootData.getValue().size() == 1, "Only a single data node is expected in %s, but there were: %s",
resourcePath, rootData.getValue());
return rootData;
}
private DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?> extractCheckedSingleChild(
final ContainerNode rootData) {
// Now transform the single child from JSON into BA format
final DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?> actualData =
Iterables.getFirst(rootData.getValue(), null);
checkNotNull(actualData, "Unable to extract single child from %s", rootData);
return actualData;
}
private Map.Entry<InstanceIdentifier<? extends DataObject>, DataObject> getCheckedBinding(
final YangInstanceIdentifier nodeYangIdentifier,
final DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?> actualData)
throws DeserializationException {
final Optional<Map.Entry<InstanceIdentifier<? extends DataObject>, DataObject>> ba =
serializer.toBinding(new AbstractMap.SimpleImmutableEntry<>(nodeYangIdentifier, actualData));
checkArgument(ba.isPresent(), "Unable to convert to binding %s", nodeYangIdentifier);
return ba.get();
}
}
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