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Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/Topology.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/Topology.java | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/Topology.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/Topology.java new file mode 100644 index 00000000..6337807c --- /dev/null +++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/topology/Topology.java @@ -0,0 +1,71 @@ +/* + * Copyright 2014-2015 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.net.Provided; + +/** + * Represents a network topology computation snapshot. + */ +public interface Topology extends Provided { + + /** + * Returns the time, specified in system nanos of when the topology became + * available. + * + * @return time in system nanos + */ + long time(); + + /** + * Returns the time, specified in system millis of when the topology became + * available. + * + * @return time in system nanos + */ + long creationTime(); + + /** + * Returns the time, specified in system nanos of how long the topology took + * to compute. + * + * @return elapsed time in system nanos + */ + long computeCost(); + + /** + * Returns the number of SCCs (strongly connected components) in the + * topology. + * + * @return number of clusters + */ + int clusterCount(); + + /** + * Returns the number of infrastructure devices in the topology. + * + * @return number of devices + */ + int deviceCount(); + + /** + * Returns the number of infrastructure links in the topology. + * + * @return number of links + */ + int linkCount(); + +} |