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Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/TopologyEvent.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/TopologyEvent.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/TopologyEvent.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/TopologyEvent.java new file mode 100644 index 00000000..10c8dfc3 --- /dev/null +++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/TopologyEvent.java @@ -0,0 +1,78 @@ +/* + * Copyright 2014 Open Networking Laboratory + * + * 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 org.onosproject.net.topology; + +import org.onosproject.event.AbstractEvent; +import org.onosproject.event.Event; + +import java.util.List; + +/** + * Describes network topology event. + */ +public class TopologyEvent extends AbstractEvent<TopologyEvent.Type, Topology> { + + private final List<Event> reasons; + + /** + * Type of topology events. + */ + public enum Type { + /** + * Signifies that topology has changed. + */ + TOPOLOGY_CHANGED + } + + /** + * Creates an event of a given type and for the specified topology and the + * current time. + * + * @param type topology event type + * @param topology event topology subject + * @param reasons list of events that triggered topology change + */ + public TopologyEvent(Type type, Topology topology, List<Event> reasons) { + super(type, topology); + this.reasons = reasons; + } + + /** + * Creates an event of a given type and for the specified topology and time. + * + * @param type link event type + * @param topology event topology subject + * @param reasons list of events that triggered topology change + * @param time occurrence time + */ + public TopologyEvent(Type type, Topology topology, List<Event> reasons, + long time) { + super(type, topology, time); + this.reasons = reasons; + } + + + /** + * Returns the list of events that triggered the topology change. + * + * @return list of events responsible for change in topology; null if + * initial topology computation + */ + public List<Event> reasons() { + return reasons; + } + +} |