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/*
* Copyright 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.provider.nil;
import static com.google.common.base.Preconditions.checkArgument;
/**
* Re-routable linear topology simulator with an alternate path in the middle.
*/
public class RerouteTopologySimulator extends LinearTopologySimulator {
@Override
protected void processTopoShape(String shape) {
super.processTopoShape(shape);
infrastructurePorts = 5;
deviceCount = (topoShape.length == 1) ? deviceCount : Integer.parseInt(topoShape[1]);
}
@Override
public void setUpTopology() {
checkArgument(deviceCount > 2, "There must be at least 3 devices");
super.setUpTopology();
}
@Override
protected void createLinks() {
int portOffset = 1;
for (int i = 0, n = deviceCount - 2; i < n; i++) {
createLink(i, i + 1, portOffset, 1);
portOffset = 2;
}
int middle = (deviceCount - 1) / 2;
int alternate = deviceCount - 1;
createLink(middle - 1, alternate, 3, 1);
createLink(middle, alternate, 3, 2);
}
@Override
protected void createHosts() {
createHosts(deviceIds.get(0), infrastructurePorts);
createHosts(deviceIds.get(deviceCount - 2), infrastructurePorts);
}
}
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