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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.intent;
import java.util.List;
import java.util.Optional;
import com.google.common.annotations.Beta;
import org.onlab.packet.MplsLabel;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.Path;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Abstraction of explicit MPLS label-switched path.
*/
@Beta
public final class MplsPathIntent extends PathIntent {
private final Optional<MplsLabel> ingressLabel;
private final Optional<MplsLabel> egressLabel;
/**
* Creates a new point-to-point intent with the supplied ingress/egress
* ports and using the specified explicit path.
*
* @param appId application identifier
* @param key intent key
* @param selector traffic selector
* @param treatment treatment
* @param path traversed links
* @param ingressLabel MPLS egress label
* @param egressLabel MPLS ingress label
* @param constraints optional list of constraints
* @param priority priority to use for flows generated by this intent
* @throws NullPointerException {@code path} is null
*/
private MplsPathIntent(ApplicationId appId, Key key, TrafficSelector selector,
TrafficTreatment treatment, Path path, Optional<MplsLabel> ingressLabel,
Optional<MplsLabel> egressLabel, List<Constraint> constraints,
int priority) {
super(appId, key, selector, treatment, path, constraints,
priority);
this.ingressLabel = checkNotNull(ingressLabel);
this.egressLabel = checkNotNull(egressLabel);
}
/**
* Returns a new host to host intent builder.
*
* @return host to host intent builder
*/
public static Builder builder() {
return new Builder();
}
/**
* Builder of a host to host intent.
*/
public static final class Builder extends PathIntent.Builder {
private Optional<MplsLabel> ingressLabel = Optional.empty();
private Optional<MplsLabel> egressLabel = Optional.empty();
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);
}
@Override
public Builder path(Path path) {
return (Builder) super.path(path);
}
/**
* Sets the ingress label of the intent that will be built.
*
* @param ingressLabel ingress label
* @return this builder
*/
public Builder ingressLabel(Optional<MplsLabel> ingressLabel) {
this.ingressLabel = ingressLabel;
return this;
}
/**
* Sets the ingress label of the intent that will be built.
*
* @param egressLabel ingress label
* @return this builder
*/
public Builder egressLabel(Optional<MplsLabel> egressLabel) {
this.egressLabel = egressLabel;
return this;
}
/**
* Builds a host to host intent from the accumulated parameters.
*
* @return point to point intent
*/
public MplsPathIntent build() {
return new MplsPathIntent(
appId,
key,
selector,
treatment,
path,
ingressLabel,
egressLabel,
constraints,
priority
);
}
}
/**
* Returns the MPLS label which the ingress traffic should tagged.
*
* @return ingress MPLS label
*/
public Optional<MplsLabel> ingressLabel() {
return ingressLabel;
}
/**
* Returns the MPLS label which the egress traffic should tagged.
*
* @return egress MPLS label
*/
public Optional<MplsLabel> egressLabel() {
return egressLabel;
}
}
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