org.opendaylight.bgpcep.pcep.tunnel.provider.TunelProgrammingUtil Maven / Gradle / Ivy

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PCEP Tunnel Topology Provider
There is a newer version: 0.22.2
/*
 * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.bgpcep.pcep.tunnel.provider;

import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import org.opendaylight.mdsal.binding.api.ReadTransaction;
import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.Ero;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.EroBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.ero.Subobject;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev181109.explicit.route.object.ero.SubobjectBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev220730.FailureType;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.pcep.rev220730.OperationResult;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.p2p.rev130819.tunnel.p2p.path.cfg.attributes.ExplicitHops;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.p2p.rev130819.tunnel.p2p.path.cfg.attributes.ExplicitHopsKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev181109.ExplicitHops1;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.topology.tunnel.pcep.rev181109.SupportingNode1;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Link;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.node.attributes.SupportingNode;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

final class TunelProgrammingUtil {
    public static final ListenableFuture RESULT = Futures.immediateFuture(new OperationResult() {
        @Override
        public Class implementedInterface() {
            return OperationResult.class;
        }

        @Override
        public FailureType getFailure() {
            return FailureType.Unsent;
        }

        @Override
        public List getError() {
            return Collections.emptyList();
        }
    });
    private static final Logger LOG = LoggerFactory.getLogger(TunelProgrammingUtil.class);

    private TunelProgrammingUtil() {
        // Hidden on purpose
    }

    public static Ero buildEro(final Map explicitHops) {
        final EroBuilder b = new EroBuilder();

        if (explicitHops != null && !explicitHops.isEmpty()) {
            final List subobjs = new ArrayList<>(explicitHops.size());
            for (final ExplicitHops h : explicitHops.values()) {

                final ExplicitHops1 h1 = h.augmentation(ExplicitHops1.class);
                if (h1 != null) {
                    final SubobjectBuilder sb = new SubobjectBuilder();
                    sb.fieldsFrom(h1);
                    sb.setLoose(h.getLoose());
                    subobjs.add(sb.build());
                } else {
                    LOG.debug("Ignoring unhandled explicit hop {}", h);
                }
            }
            b.setSubobject(subobjs);
        }
        return b.build();
    }

    public static NodeId supportingNode(final Node node) {
        for (final SupportingNode n : node.nonnullSupportingNode().values()) {
            final SupportingNode1 n1 = n.augmentation(SupportingNode1.class);
            if (n1 != null && n1.getPathComputationClient().getControlling()) {
                return n.key().getNodeRef();
            }
        }

        return null;
    }

    public static Optional sourceNode(final ReadTransaction rt, final InstanceIdentifier topology,
            final Link link) throws InterruptedException, ExecutionException {
        return rt.read(LogicalDatastoreType.OPERATIONAL,
                topology.child(Node.class, new NodeKey(link.getSource().getSourceNode()))).get();
    }
}