/*
* 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.v3po.vppclassifier;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static io.fd.honeycomb.translate.v3po.interfacesstate.InterfaceUtils.printHexBinary;
import com.google.common.primitives.UnsignedInts;
import io.fd.honeycomb.translate.read.ReadContext;
import io.fd.honeycomb.translate.spi.read.ListReaderCustomizer;
import io.fd.honeycomb.translate.read.ReadFailedException;
import io.fd.honeycomb.translate.v3po.util.FutureJVppCustomizer;
import io.fd.honeycomb.translate.v3po.util.NamingContext;
import io.fd.honeycomb.translate.v3po.util.TranslateUtils;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.HexString;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev150603.VppClassifierStateBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev150603.vpp.classifier.state.ClassifyTable;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev150603.vpp.classifier.state.ClassifyTableBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev150603.vpp.classifier.state.ClassifyTableKey;
import org.opendaylight.yangtools.concepts.Builder;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.openvpp.jvpp.core.dto.ClassifyTableIds;
import org.openvpp.jvpp.core.dto.ClassifyTableIdsReply;
import org.openvpp.jvpp.core.dto.ClassifyTableInfo;
import org.openvpp.jvpp.core.dto.ClassifyTableInfoReply;
import org.openvpp.jvpp.core.future.FutureJVppCore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Reader customizer responsible for classify table read.
to VPP.
Equivalent to invoking {@code vppctl show
* class table} command.
*/
public class ClassifyTableReader extends FutureJVppCustomizer
implements ListReaderCustomizer, VppNodeReader {
private static final Logger LOG = LoggerFactory.getLogger(ClassifyTableReader.class);
private final NamingContext classifyTableContext;
public ClassifyTableReader(@Nonnull final FutureJVppCore futureJVppCore,
@Nonnull final NamingContext classifyTableContext) {
super(futureJVppCore);
this.classifyTableContext = checkNotNull(classifyTableContext, "classifyTableContext should not be null");
}
@Override
public void merge(@Nonnull final Builder extends DataObject> builder,
@Nonnull final List readData) {
((VppClassifierStateBuilder) builder).setClassifyTable(readData);
}
@Nonnull
@Override
public ClassifyTableBuilder getBuilder(@Nonnull final InstanceIdentifier id) {
return new ClassifyTableBuilder();
}
@Override
public void readCurrentAttributes(@Nonnull final InstanceIdentifier id,
@Nonnull final ClassifyTableBuilder builder, @Nonnull final ReadContext ctx)
throws ReadFailedException {
LOG.debug("Reading attributes for classify table: {}", id);
final ClassifyTableKey key = id.firstKeyOf(ClassifyTable.class);
checkArgument(key != null, "could not find ClassifyTable key in {}", id);
final ClassifyTableInfo request = new ClassifyTableInfo();
final String tableName = key.getName();
if (!classifyTableContext.containsIndex(tableName, ctx.getMappingContext())) {
LOG.debug("Could not find classify table {} in the naming context", tableName);
return;
}
request.tableId = classifyTableContext.getIndex(tableName, ctx.getMappingContext());
try {
final ClassifyTableInfoReply reply =
TranslateUtils.getReplyForRead(getFutureJVpp().classifyTableInfo(request).toCompletableFuture(), id);
// mandatory values:
builder.setName(tableName);
builder.setKey(key);
builder.setNbuckets(UnsignedInts.toLong(reply.nbuckets));
builder.setSkipNVectors(UnsignedInts.toLong(reply.skipNVectors));
builder.setMissNext(readVppNode(reply.missNextIndex, LOG));
builder.setMask(new HexString(printHexBinary(reply.mask)));
builder.setActiveSessions(UnsignedInts.toLong(reply.activeSessions));
if (reply.nextTableIndex != ~0) {
// next table index is present:
builder.setNextTable(classifyTableContext.getName(reply.nextTableIndex, ctx.getMappingContext()));
}
if (LOG.isTraceEnabled()) {
LOG.trace("Attributes for classify table {} successfully read: {}", id, builder.build());
}
} catch (VppBaseCallException e) {
throw new ReadFailedException(id, e);
}
}
@Nonnull
@Override
public List getAllIds(@Nonnull final InstanceIdentifier id,
@Nonnull final ReadContext context) throws ReadFailedException {
LOG.debug("Reading list of keys for classify tables: {}", id);
try {
final ClassifyTableIdsReply classifyTableIdsReply = TranslateUtils
.getReplyForRead(getFutureJVpp().classifyTableIds(new ClassifyTableIds()).toCompletableFuture(), id);
if (classifyTableIdsReply.ids != null) {
return Arrays.stream(classifyTableIdsReply.ids).mapToObj(i -> {
final String tableName = classifyTableContext.getName(i, context.getMappingContext());
LOG.trace("Classify table with name: {} and index: {} found in VPP", tableName, i);
return new ClassifyTableKey(tableName);
}).collect(Collectors.toList());
} else {
return Collections.emptyList();
}
} catch (VppBaseCallException e) {
throw new ReadFailedException(id, e);
}
}
}