2 * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.protocol.bgp.parser.spi.pojo;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.base.Preconditions;
14 import java.util.HashMap;
16 import java.util.Optional;
17 import javax.annotation.concurrent.GuardedBy;
18 import org.opendaylight.protocol.bgp.parser.spi.PeerConstraint;
19 import org.opendaylight.protocol.bgp.parser.spi.PeerSpecificParserConstraintProvider;
21 public class PeerSpecificParserConstraintImpl implements PeerSpecificParserConstraintProvider {
24 private final Map<Class<? extends PeerConstraint>, PeerConstraint> constraints = new HashMap<>();
27 public synchronized <T extends PeerConstraint> Optional<T> getPeerConstraint(final Class<T> peerConstraintType) {
28 return (Optional<T>) Optional.ofNullable(this.constraints.get(peerConstraintType));
32 public synchronized <T extends PeerConstraint> boolean addPeerConstraint(final Class<T> classType, final T peerConstraint) {
33 requireNonNull(classType);
34 requireNonNull(peerConstraint);
35 final PeerConstraint previous = this.constraints.putIfAbsent(classType, peerConstraint);
36 return previous == null;