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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.net;
import org.onlab.util.Frequency;
import java.util.Objects;
import static com.google.common.base.MoreObjects.toStringHelper;
/**
* Implementation of OMS port (Optical Multiplexing Section).
* Also referred to as a WDM port or W-port.
* See ITU G.709 "Interfaces for the Optical Transport Network (OTN)"
*
* Assumes we only support fixed grid for now.
*/
public class OmsPort extends DefaultPort {
private final Frequency minFrequency; // Minimum frequency
private final Frequency maxFrequency; // Maximum frequency
private final Frequency grid; // Grid spacing frequency
/**
* Creates an OMS port in the specified network element.
*
* @param element parent network element
* @param number port number
* @param isEnabled port enabled state
* @param minFrequency minimum frequency
* @param maxFrequency maximum frequency
* @param grid grid spacing frequency
* @param annotations optional key/value annotations
*/
public OmsPort(Element element, PortNumber number, boolean isEnabled,
Frequency minFrequency, Frequency maxFrequency, Frequency grid, Annotations... annotations) {
super(element, number, isEnabled, Type.OMS, 0, annotations);
this.minFrequency = minFrequency;
this.maxFrequency = maxFrequency;
this.grid = grid;
}
/**
* Returns the total number of channels on the port.
*
* @return total number of channels
*/
public short totalChannels() {
Frequency diff = maxFrequency.subtract(minFrequency);
return (short) (diff.asHz() / (grid.asHz() + 1));
}
/**
* Returns the minimum frequency.
*
* @return minimum frequency
*/
public Frequency minFrequency() {
return minFrequency;
}
/**
* Returns the maximum frequency.
*
* @return maximum frequency
*/
public Frequency maxFrequency() {
return maxFrequency;
}
/**
* Returns the grid spacing frequency.
*
* @return grid spacing frequency
*/
public Frequency grid() {
return grid;
}
@Override
public int hashCode() {
return Objects.hash(number(), isEnabled(), type(),
minFrequency, maxFrequency, grid, annotations());
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj != null && getClass() == obj.getClass()) {
final OmsPort other = (OmsPort) obj;
return Objects.equals(this.element().id(), other.element().id()) &&
Objects.equals(this.number(), other.number()) &&
Objects.equals(this.isEnabled(), other.isEnabled()) &&
Objects.equals(this.minFrequency, other.minFrequency) &&
Objects.equals(this.maxFrequency, other.maxFrequency) &&
Objects.equals(this.grid, other.grid) &&
Objects.equals(this.annotations(), other.annotations());
}
return false;
}
@Override
public String toString() {
return toStringHelper(this)
.add("element", element().id())
.add("number", number())
.add("isEnabled", isEnabled())
.add("type", type())
.add("minFrequency", minFrequency)
.add("maxFrequency", maxFrequency)
.add("grid", grid)
.toString();
}
}
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