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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 com.google.common.annotations.Beta;
import com.google.common.base.MoreObjects;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Abstraction of multiple source to single destination connectivity intent.
*/
@Beta
public final class MultiPointToSinglePointIntent extends ConnectivityIntent {
private final Set<ConnectPoint> ingressPoints;
private final ConnectPoint egressPoint;
/**
* Creates a new multi-to-single point connectivity intent for the specified
* traffic selector and treatment.
*
* @param appId application identifier
* @param key intent key
* @param selector traffic selector
* @param treatment treatment
* @param ingressPoints set of ports from which ingress traffic originates
* @param egressPoint port to which traffic will egress
* @param constraints constraints to apply to the intent
* @param priority priority to use for flows generated by this intent
* @throws NullPointerException if {@code ingressPoints} or
* {@code egressPoint} is null.
* @throws IllegalArgumentException if the size of {@code ingressPoints} is
* not more than 1
*/
private MultiPointToSinglePointIntent(ApplicationId appId,
Key key,
TrafficSelector selector,
TrafficTreatment treatment,
Set<ConnectPoint> ingressPoints,
ConnectPoint egressPoint,
List<Constraint> constraints,
int priority) {
super(appId, key, Collections.emptyList(), selector, treatment, constraints,
priority);
checkNotNull(ingressPoints);
checkArgument(!ingressPoints.isEmpty(), "Ingress point set cannot be empty");
checkNotNull(egressPoint);
checkArgument(!ingressPoints.contains(egressPoint),
"Set of ingresses should not contain egress (egress: %s)", egressPoint);
this.ingressPoints = Sets.newHashSet(ingressPoints);
this.egressPoint = egressPoint;
}
/**
* Constructor for serializer.
*/
protected MultiPointToSinglePointIntent() {
super();
this.ingressPoints = null;
this.egressPoint = null;
}
/**
* Returns a new multi point to single point intent builder. The application id,
* ingress points and egress point are required fields. If they are
* not set by calls to the appropriate methods, an exception will
* be thrown.
*
* @return single point to multi point builder
*/
public static Builder builder() {
return new Builder();
}
/**
* Builder of a multi point to single point intent.
*/
public static final class Builder extends ConnectivityIntent.Builder {
Set<ConnectPoint> ingressPoints;
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 single point to multi point intent
* that will be built.
*
* @param ingressPoints ingress connect points
* @return this builder
*/
public Builder ingressPoints(Set<ConnectPoint> ingressPoints) {
this.ingressPoints = ImmutableSet.copyOf(ingressPoints);
return this;
}
/**
* Sets the egress point of the multi point to single 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 multi point to single point intent from the
* accumulated parameters.
*
* @return point to point intent
*/
public MultiPointToSinglePointIntent build() {
return new MultiPointToSinglePointIntent(
appId,
key,
selector,
treatment,
ingressPoints,
egressPoint,
constraints,
priority
);
}
}
/**
* Returns the set of ports on which ingress traffic should be connected to
* the egress port.
*
* @return set of ingress ports
*/
public Set<ConnectPoint> ingressPoints() {
return ingressPoints;
}
/**
* 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", ingressPoints())
.add("egress", egressPoint())
.add("constraints", constraints())
.toString();
}
}
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