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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 com.google.common.base.MoreObjects;
import java.util.Objects;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Abstraction of a network connection point expressed as a pair of the
* network element identifier and port number.
*/
public class ConnectPoint {
private final ElementId elementId;
private final PortNumber portNumber;
/**
* Creates a new connection point.
*
* @param elementId network element identifier
* @param portNumber port number
*/
public ConnectPoint(ElementId elementId, PortNumber portNumber) {
this.elementId = elementId;
this.portNumber = portNumber;
}
/**
* Returns the network element identifier.
*
* @return element identifier
*/
public ElementId elementId() {
return elementId;
}
/**
* Returns the identifier of the infrastructure device if the connection
* point belongs to a network element which is indeed an infrastructure
* device.
*
* @return network element identifier as a device identifier
* @throws java.lang.IllegalStateException if connection point is not
* associated with a device
*/
public DeviceId deviceId() {
if (elementId instanceof DeviceId) {
return (DeviceId) elementId;
}
throw new IllegalStateException("Connection point not associated " +
"with an infrastructure device");
}
/**
* Returns the identifier of the infrastructure device if the connection
* point belongs to a network element which is indeed an end-station host.
*
* @return network element identifier as a host identifier
* @throws java.lang.IllegalStateException if connection point is not
* associated with a host
*/
public HostId hostId() {
if (elementId instanceof HostId) {
return (HostId) elementId;
}
throw new IllegalStateException("Connection point not associated " +
"with an end-station host");
}
/**
* Returns the identifier of the infrastructure device if the connection
* point belongs to a network element which is indeed an ip of pcc
* client identifier.
*
* @return network element identifier as a pcc client identifier
* @throws java.lang.IllegalStateException if connection point is not
* associated with a pcc client
*/
public IpElementId ipElementId() {
if (elementId instanceof IpElementId) {
return (IpElementId) elementId;
}
throw new IllegalStateException("Connection point not associated " +
"with an pcc client");
}
/**
* Returns the connection port number.
*
* @return port number
*/
public PortNumber port() {
return portNumber;
}
/**
* Parse a device connect point from a string.
* The connect point should be in the format "deviceUri/portNumber".
*
* @param string string to parse
* @return a ConnectPoint based on the information in the string.
*/
public static ConnectPoint deviceConnectPoint(String string) {
checkNotNull(string);
String[] splitted = string.split("/");
checkArgument(splitted.length == 2,
"Connect point must be in \"deviceUri/portNumber\" format");
return new ConnectPoint(DeviceId.deviceId(splitted[0]),
PortNumber.portNumber(splitted[1]));
}
/**
* Parse a host connect point from a string.
* The connect point should be in the format "hostId/vlanId/portNumber".
*
* @param string string to parse
* @return a ConnectPoint based on the information in the string.
*/
public static ConnectPoint hostConnectPoint(String string) {
checkNotNull(string);
String[] splitted = string.split("/");
checkArgument(splitted.length == 3,
"Connect point must be in \"hostId/vlanId/portNumber\" format");
int lastSlash = string.lastIndexOf("/");
return new ConnectPoint(HostId.hostId(string.substring(0, lastSlash)),
PortNumber.portNumber(string.substring(lastSlash + 1, string.length())));
}
@Override
public int hashCode() {
return Objects.hash(elementId, portNumber);
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof ConnectPoint) {
final ConnectPoint other = (ConnectPoint) obj;
return Objects.equals(this.elementId, other.elementId) &&
Objects.equals(this.portNumber, other.portNumber);
}
return false;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("elementId", elementId)
.add("portNumber", portNumber)
.toString();
}
}
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