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/*
* 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;
import org.onosproject.net.provider.ProviderId;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Default edge link model implementation.
*/
public class DefaultEdgeLink extends DefaultLink implements EdgeLink {
private final HostId hostId;
private final HostLocation hostLocation;
/**
* Creates an edge link using the supplied information.
*
* @param providerId provider identity
* @param hostPoint host-side connection point
* @param hostLocation location where host attaches to the network
* @param isIngress true to indicate host-to-network direction; false
* for network-to-host direction
* @param annotations optional key/value annotations
*/
public DefaultEdgeLink(ProviderId providerId, ConnectPoint hostPoint,
HostLocation hostLocation, boolean isIngress,
Annotations... annotations) {
super(providerId, isIngress ? hostPoint : hostLocation,
isIngress ? hostLocation : hostPoint, Type.EDGE, annotations);
checkArgument(hostPoint.elementId() instanceof HostId,
"Host point does not refer to a host ID");
this.hostId = (HostId) hostPoint.elementId();
this.hostLocation = hostLocation;
}
@Override
public HostId hostId() {
return hostId;
}
@Override
public HostLocation hostLocation() {
return hostLocation;
}
/**
* Creates a phantom edge link, to an unspecified end-station. This link
* does not represent any actually discovered link stored in the system.
*
* @param edgePort network edge port
* @param isIngress true to indicate host-to-network direction; false
* for network-to-host direction
* @return new phantom edge link
*/
public static DefaultEdgeLink createEdgeLink(ConnectPoint edgePort,
boolean isIngress) {
checkNotNull(edgePort, "Edge port cannot be null");
HostLocation location = (edgePort instanceof HostLocation) ?
(HostLocation) edgePort : new HostLocation(edgePort, 0);
return new DefaultEdgeLink(ProviderId.NONE,
new ConnectPoint(HostId.NONE, PortNumber.P0),
location, isIngress);
}
/**
* Creates a an edge link, to the specified end-station.
*
* @param host host
* @param isIngress true to indicate host-to-network direction; false
* for network-to-host direction
* @return new phantom edge link
*/
public static DefaultEdgeLink createEdgeLink(Host host, boolean isIngress) {
checkNotNull(host, "Host cannot be null");
return new DefaultEdgeLink(ProviderId.NONE,
new ConnectPoint(host.id(), PortNumber.P0),
host.location(), isIngress);
}
}
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