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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.ImmutableList;
import com.google.common.collect.ImmutableSet;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.HostId;
import org.onosproject.net.Link;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.intent.constraint.LinkTypeConstraint;
import java.util.List;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Abstraction of end-station to end-station bidirectional connectivity.
*/
@Beta
public final class HostToHostIntent extends ConnectivityIntent {
static final LinkTypeConstraint NOT_OPTICAL = new LinkTypeConstraint(false, Link.Type.OPTICAL);
private final HostId one;
private final HostId two;
/**
* 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 ConnectivityIntent.Builder {
HostId one;
HostId two;
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 first host of the intent that will be built.
*
* @param one first host
* @return this builder
*/
public Builder one(HostId one) {
this.one = one;
return this;
}
/**
* Sets the second host of the intent that will be built.
*
* @param two second host
* @return this builder
*/
public Builder two(HostId two) {
this.two = two;
return this;
}
/**
* Builds a host to host intent from the accumulated parameters.
*
* @return point to point intent
*/
public HostToHostIntent build() {
List<Constraint> theConstraints = constraints;
// If not-OPTICAL constraint hasn't been specified, add them
if (!constraints.contains(NOT_OPTICAL)) {
theConstraints = ImmutableList.<Constraint>builder()
.add(NOT_OPTICAL)
.addAll(constraints)
.build();
}
return new HostToHostIntent(
appId,
key,
one,
two,
selector,
treatment,
theConstraints,
priority
);
}
}
/**
* Creates a new host-to-host intent with the supplied host pair.
*
* @param appId application identifier
* @param key intent key
* @param one first host
* @param two second host
* @param selector action
* @param treatment ingress port
* @param constraints optional prioritized list of path selection constraints
* @param priority priority to use for flows generated by this intent
* @throws NullPointerException if {@code one} or {@code two} is null.
*/
private HostToHostIntent(ApplicationId appId, Key key,
HostId one, HostId two,
TrafficSelector selector,
TrafficTreatment treatment,
List<Constraint> constraints,
int priority) {
super(appId, key, ImmutableSet.of(one, two), selector, treatment,
constraints, priority);
// TODO: consider whether the case one and two are same is allowed
this.one = checkNotNull(one);
this.two = checkNotNull(two);
}
/**
* Returns identifier of the first host.
*
* @return first host identifier
*/
public HostId one() {
return one;
}
/**
* Returns identifier of the second host.
*
* @return second host identifier
*/
public HostId two() {
return two;
}
@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("constraints", constraints())
.add("one", one)
.add("two", two)
.toString();
}
}
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