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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.translate.v3po.interfaces.acl;
import static com.google.common.base.Preconditions.checkNotNull;
import io.fd.honeycomb.translate.util.RWUtils;
import io.fd.honeycomb.translate.v3po.util.TranslateUtils;
import io.fd.honeycomb.translate.v3po.util.WriteTimeoutException;
import java.util.List;
import java.util.concurrent.CompletionStage;
import java.util.stream.Collector;
import javax.annotation.Nonnull;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.Ace;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.actions.PacketHandling;
import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.access.control.list.rev160708.access.lists.acl.access.list.entries.ace.matches.AceType;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.openvpp.jvpp.VppBaseCallException;
import org.openvpp.jvpp.core.dto.ClassifyAddDelSession;
import org.openvpp.jvpp.core.dto.ClassifyAddDelSessionReply;
import org.openvpp.jvpp.core.dto.ClassifyAddDelTable;
import org.openvpp.jvpp.core.dto.ClassifyAddDelTableReply;
import org.openvpp.jvpp.core.dto.InputAclSetInterface;
import org.openvpp.jvpp.core.future.FutureJVppCore;
abstract class AbstractAceWriter<T extends AceType> implements AceWriter {
private static final Collector<PacketHandling, ?, PacketHandling> SINGLE_ITEM_COLLECTOR =
RWUtils.singleItemCollector();
private final FutureJVppCore futureJVppCore;
public AbstractAceWriter(@Nonnull final FutureJVppCore futureJVppCore) {
this.futureJVppCore = checkNotNull(futureJVppCore, "futureJVppCore should not be null");
}
@Nonnull
public FutureJVppCore getFutureJVppCore() {
return futureJVppCore;
}
protected abstract ClassifyAddDelTable getClassifyAddDelTableRequest(@Nonnull final PacketHandling action,
@Nonnull final T ace,
final int nextTableIndex);
protected abstract ClassifyAddDelSession getClassifyAddDelSessionRequest(@Nonnull final PacketHandling action,
@Nonnull final T ace,
final int nextTableIndex);
protected abstract void setClassifyTable(@Nonnull final InputAclSetInterface request, final int tableIndex);
public final void write(@Nonnull final InstanceIdentifier<?> id, @Nonnull final List<Ace> aces,
@Nonnull final InputAclSetInterface request)
throws VppBaseCallException, WriteTimeoutException {
final PacketHandling action = aces.stream().map(ace -> ace.getActions().getPacketHandling()).distinct()
.collect(SINGLE_ITEM_COLLECTOR);
int firstTableIndex = -1;
int nextTableIndex = -1;
for (final Ace ace : aces) {
// Create table + session per entry. We actually need one table for each nonempty subset of params,
// so we could decrease number of tables to 109 = 15 (eth) + 31 (ip4) + 63 (ip6) for general case.
// TODO: For special cases like many ACEs of similar kind, it could be significant optimization.
final ClassifyAddDelTable ctRequest =
getClassifyAddDelTableRequest(action, (T) ace.getMatches().getAceType(), nextTableIndex);
nextTableIndex = createClassifyTable(id, ctRequest);
createClassifySession(id,
getClassifyAddDelSessionRequest(action, (T) ace.getMatches().getAceType(), nextTableIndex));
if (firstTableIndex == -1) {
firstTableIndex = nextTableIndex;
}
}
setClassifyTable(request, firstTableIndex);
}
private int createClassifyTable(@Nonnull final InstanceIdentifier<?> id,
@Nonnull final ClassifyAddDelTable request)
throws VppBaseCallException, WriteTimeoutException {
final CompletionStage<ClassifyAddDelTableReply> cs = futureJVppCore.classifyAddDelTable(request);
final ClassifyAddDelTableReply reply = TranslateUtils.getReplyForWrite(cs.toCompletableFuture(), id);
return reply.newTableIndex;
}
private void createClassifySession(@Nonnull final InstanceIdentifier<?> id,
@Nonnull final ClassifyAddDelSession request)
throws VppBaseCallException, WriteTimeoutException {
final CompletionStage<ClassifyAddDelSessionReply> cs = futureJVppCore.classifyAddDelSession(request);
TranslateUtils.getReplyForWrite(cs.toCompletableFuture(), id);
}
}
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