aboutsummaryrefslogtreecommitdiffstats
path: root/tests/nsh_sfc
AgeCommit message (Expand)AuthorFilesLines
2017-07-05 Change the bootstrap script file and test the CI-management.Fangyin Hu9-54/+201
2017-06-29CSIT-687: Directory structure reorganizationTibor Frank9-0/+502
='n151' href='#n151'>151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 
/*
 * 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.translate.impl.read.registry;

import static com.google.common.base.Preconditions.checkArgument;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import io.fd.honeycomb.translate.read.InitFailedException;
import io.fd.honeycomb.translate.read.InitListReader;
import io.fd.honeycomb.translate.read.Initializer;
import io.fd.honeycomb.translate.read.ListReader;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.read.Reader;
import io.fd.honeycomb.translate.util.RWUtils;
import io.fd.honeycomb.translate.util.read.AbstractGenericReader;
import io.fd.honeycomb.translate.util.read.DelegatingReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.annotation.Nonnull;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.Identifiable;
import org.opendaylight.yangtools.yang.binding.Identifier;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

class CompositeReader<D extends DataObject, B extends Builder<D>>
        extends AbstractGenericReader<D, B>
        implements Initializer<D>, DelegatingReader<D, B> {

    private static final Logger LOG = LoggerFactory.getLogger(CompositeReader.class);

    private final Reader<D, B> delegate;
    private final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders;

    private CompositeReader(final Reader<D, B> reader,
                            final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders) {
        super(reader.getManagedDataObjectType());
        this.delegate = reader;
        this.childReaders = childReaders;
    }

    @VisibleForTesting
    ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> getChildReaders() {
        return childReaders;
    }

    @SuppressWarnings("unchecked")
    public static <D extends DataObject> InstanceIdentifier<D> appendTypeToId(
        final InstanceIdentifier<? extends DataObject> parentId, final InstanceIdentifier<D> type) {
        final InstanceIdentifier.PathArgument t = new InstanceIdentifier.Item<>(type.getTargetType());
        return (InstanceIdentifier<D>) InstanceIdentifier.create(Iterables.concat(
            parentId.getPathArguments(), Collections.singleton(t)));
    }

    @Nonnull
    @Override
    public Optional<? extends DataObject> read(@Nonnull final InstanceIdentifier<? extends DataObject> id,
                                               @Nonnull final ReadContext ctx) throws ReadFailedException {
        if (shouldReadCurrent(id)) {
            LOG.trace("{}: Reading current: {}", this, id);
            return readCurrent((InstanceIdentifier<D>) id, ctx);
        } else if (shouldDelegateToChild(id)) {
            LOG.trace("{}: Reading child: {}", this, id);
            return readSubtree(id, ctx);
        } else {
            // Fallback
            LOG.trace("{}: Delegating read: {}", this, id);
            return delegate.read(id, ctx);
        }
    }

    private boolean shouldReadCurrent(@Nonnull final InstanceIdentifier<? extends DataObject> id) {
        return id.getTargetType().equals(getManagedDataObjectType().getTargetType());
    }

    private boolean shouldDelegateToChild(@Nonnull final InstanceIdentifier<? extends DataObject> id) {
        return childReaders.containsKey(RWUtils.getNextId(id, getManagedDataObjectType()).getType());
    }

    private Optional<? extends DataObject> readSubtree(final InstanceIdentifier<? extends DataObject> id,
                                                       final ReadContext ctx) throws ReadFailedException {
        final InstanceIdentifier.PathArgument nextId = RWUtils.getNextId(id, getManagedDataObjectType());
        final Reader<?, ? extends Builder<?>> nextReader = childReaders.get(nextId.getType());
        checkArgument(nextReader != null, "Unable to read: %s. No delegate present, available readers at next level: %s",
                id, childReaders.keySet());
        return nextReader.read(id, ctx);
    }

    @SuppressWarnings("unchecked")
    private void readChildren(final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx, final B builder)
            throws ReadFailedException {
        LOG.debug("{}: Reading children: {}", this, childReaders.keySet());
        for (Reader child : childReaders.values()) {
            final InstanceIdentifier childId = appendTypeToId(id, child.getManagedDataObjectType());

            LOG.debug("{}: Reading child from: {}", this, child);
            if (child instanceof ListReader) {
                final List<? extends DataObject> list = ((ListReader) child).readList(childId, ctx);
                // Dont set empty lists
                if (!list.isEmpty()) {
                    ((ListReader) child).merge(builder, list);
                }
            } else {
                final Optional<? extends DataObject> read = child.read(childId, ctx);
                if (read.isPresent()) {
                    child.merge(builder, read.get());
                }
            }
        }
    }

    @Override
    public Reader<D, B> getDelegate() {
        return delegate;
    }

    @Override
    public void readCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final B builder,
                                      @Nonnull final ReadContext ctx)
            throws ReadFailedException {
        delegate.readCurrentAttributes(id, builder, ctx);
        readChildren(id, ctx, builder);
    }

    /**
     * Wrap a Reader as a Composite Reader.
     */
    static <D extends DataObject, B extends Builder<D>> Reader<D, B> createForReader(
            @Nonnull final Reader<D, B> reader,
            @Nonnull final ImmutableMap<Class<?>, Reader<?, ? extends Builder<?>>> childReaders) {

        return (reader instanceof ListReader)
                ? new CompositeListReader<>((ListReader) reader, childReaders)
                : new CompositeReader<>(reader, childReaders);
    }

    @SuppressWarnings("unchecked")
    @Override
    public void init(final DataBroker broker, final InstanceIdentifier<D> id, final ReadContext ctx) throws InitFailedException {
        if (delegate instanceof Initializer) {
            LOG.trace("{}: Initializing current: {}", this, id);
            ((Initializer<D>) delegate).init(broker, id, ctx);
        }

        for (Reader child : childReaders.values()) {
            final InstanceIdentifier childId = appendTypeToId(id, child.getManagedDataObjectType());

            if (child instanceof Initializer) {
                LOG.trace("{}: Initializing child: {}", this, childId);
                ((Initializer) child).init(broker, childId, ctx);
            }
        }
    }

    private static class CompositeListReader<D extends DataObject & Identifiable<K>, B extends Builder<D>, K extends Identifier<D>>
            extends CompositeReader<D, B>
            implements DelegatingListReader<D, K, B>, InitListReader<D, K, B> {

        private final ListReader<D, K, B> delegate;

        private CompositeListReader(final ListReader<D, K, B> reader,
                                    final ImmutableMap<Class<?>, Reader<? extends DataObject, ? extends Builder<?>>> childReaders) {
            super(reader, childReaders);
            this.delegate = reader;
        }

        public ListReader<D, K, B> getDelegate() {
            return delegate;
        }

        @Nonnull
        @Override
        public List<D> readList(@Nonnull final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx)
                throws ReadFailedException {
            LOG.trace("{}: Reading all list entries", this);
            final List<K> allIds = delegate.getAllIds(id, ctx);
            LOG.debug("{}: Reading list entries for: {}", this, allIds);

            // Override read list in order to perform readCurrent + readChildren here
            final ArrayList<D> allEntries = new ArrayList<>(allIds.size());
            for (K key : allIds) {
                final InstanceIdentifier.IdentifiableItem<D, K> currentBdItem = RWUtils.getCurrentIdItem(id, key);
                final InstanceIdentifier<D> keyedId = RWUtils.replaceLastInId(id, currentBdItem);
                final Optional<D> read = readCurrent(keyedId, ctx);
                if (read.isPresent()) {
                    final DataObject singleItem = read.get();
                    checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(singleItem.getClass()));
                    allEntries.add(getManagedDataObjectType().getTargetType().cast(singleItem));
                }
            }
            return allEntries;
        }

        @Override
        public void init(final DataBroker broker, final InstanceIdentifier<D> id, final ReadContext ctx)
                throws InitFailedException {
            try {
                final List<K> allIds = delegate.getAllIds(id, ctx);
                for (K key : allIds) {
                    super.init(broker, RWUtils.replaceLastInId(id, RWUtils.getCurrentIdItem(id, key)), ctx);
                }
            } catch (ReadFailedException e) {
                throw new InitFailedException(id, e);
            }
        }
    }
}