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/*
* 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.intent;
import java.util.Collections;
import java.util.List;
import com.google.common.annotations.Beta;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import com.google.common.base.MoreObjects;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Abstraction of point-to-point connectivity.
*/
@Beta
public final class PointToPointIntent extends ConnectivityIntent {
private final ConnectPoint ingressPoint;
private final ConnectPoint egressPoint;
/**
* Returns a new point to point intent builder. The application id,
* ingress point and egress point are required fields. If they are
* not set by calls to the appropriate methods, an exception will
* be thrown.
*
* @return point to point builder
*/
public static PointToPointIntent.Builder builder() {
return new Builder();
}
/**
* Builder of a point to point intent.
*/
public static final class Builder extends ConnectivityIntent.Builder {
ConnectPoint ingressPoint;
ConnectPoint egressPoint;
private Builder() {
// Hide constructor
}
@Override
public Builder appId(ApplicationId appId) {
return (Builder) super.appId(appId);
}
@Override
public Builder key(Key key) {
return (Builder) super.key(key);
}
@Override
public Builder selector(TrafficSelector selector) {
return (Builder) super.selector(selector);
}
@Override
public Builder treatment(TrafficTreatment treatment) {
return (Builder) super.treatment(treatment);
}
@Override
public Builder constraints(List<Constraint> constraints) {
return (Builder) super.constraints(constraints);
}
@Override
public Builder priority(int priority) {
return (Builder) super.priority(priority);
}
/**
* Sets the ingress point of the point to point intent that will be built.
*
* @param ingressPoint ingress connect point
* @return this builder
*/
public Builder ingressPoint(ConnectPoint ingressPoint) {
this.ingressPoint = ingressPoint;
return this;
}
/**
* Sets the egress point of the point to point intent that will be built.
*
* @param egressPoint egress connect point
* @return this builder
*/
public Builder egressPoint(ConnectPoint egressPoint) {
this.egressPoint = egressPoint;
return this;
}
/**
* Builds a point to point intent from the accumulated parameters.
*
* @return point to point intent
*/
public PointToPointIntent build() {
return new PointToPointIntent(
appId,
key,
selector,
treatment,
ingressPoint,
egressPoint,
constraints,
priority
);
}
}
/**
* Creates a new point-to-point intent with the supplied ingress/egress
* ports and constraints.
*
* @param appId application identifier
* @param key key of the intent
* @param selector traffic selector
* @param treatment treatment
* @param ingressPoint ingress port
* @param egressPoint egress port
* @param constraints optional list of constraints
* @param priority priority to use for flows generated by this intent
* @throws NullPointerException if {@code ingressPoint} or
* {@code egressPoints} or {@code appId} is null.
*/
private PointToPointIntent(ApplicationId appId,
Key key,
TrafficSelector selector,
TrafficTreatment treatment,
ConnectPoint ingressPoint,
ConnectPoint egressPoint,
List<Constraint> constraints,
int priority) {
super(appId, key, Collections.emptyList(), selector, treatment, constraints,
priority);
checkArgument(!ingressPoint.equals(egressPoint),
"ingress and egress should be different (ingress: %s, egress: %s)", ingressPoint, egressPoint);
this.ingressPoint = checkNotNull(ingressPoint);
this.egressPoint = checkNotNull(egressPoint);
}
/**
* Constructor for serializer.
*/
protected PointToPointIntent() {
super();
this.ingressPoint = null;
this.egressPoint = null;
}
/**
* Returns the port on which the ingress traffic should be connected to
* the egress.
*
* @return ingress port
*/
public ConnectPoint ingressPoint() {
return ingressPoint;
}
/**
* Returns the port on which the traffic should egress.
*
* @return egress port
*/
public ConnectPoint egressPoint() {
return egressPoint;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("id", id())
.add("key", key())
.add("appId", appId())
.add("priority", priority())
.add("resources", resources())
.add("selector", selector())
.add("treatment", treatment())
.add("ingress", ingressPoint)
.add("egress", egressPoint)
.add("constraints", constraints())
.toString();
}
}
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