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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.flowobjective;
import com.google.common.annotations.Beta;
import com.google.common.collect.ImmutableList;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.flow.TrafficTreatment;
import java.util.Collection;
import java.util.List;
import java.util.Optional;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Default implementation of a next objective.
*/
@Beta
public final class DefaultNextObjective implements NextObjective {
private final List<TrafficTreatment> treatments;
private final ApplicationId appId;
private final Type type;
private final Integer id;
private final Operation op;
private final Optional<ObjectiveContext> context;
private DefaultNextObjective(Builder builder) {
this.treatments = builder.treatments;
this.appId = builder.appId;
this.type = builder.type;
this.id = builder.id;
this.op = builder.op;
this.context = Optional.ofNullable(builder.context);
}
@Override
public Collection<TrafficTreatment> next() {
return treatments;
}
@Override
public Type type() {
return type;
}
@Override
public int id() {
return id;
}
@Override
public int priority() {
return 0;
}
@Override
public ApplicationId appId() {
return appId;
}
@Override
public int timeout() {
return 0;
}
@Override
public boolean permanent() {
return false;
}
@Override
public Operation op() {
return op;
}
@Override
public Optional<ObjectiveContext> context() {
return context;
}
/**
* Returns a new builder.
*
* @return new builder
*/
public static Builder builder() {
return new Builder();
}
public static final class Builder implements NextObjective.Builder {
private ApplicationId appId;
private Type type;
private Integer id;
private List<TrafficTreatment> treatments;
private Operation op;
private ObjectiveContext context;
private final ImmutableList.Builder<TrafficTreatment> listBuilder
= ImmutableList.builder();
@Override
public Builder withId(int nextId) {
this.id = nextId;
return this;
}
@Override
public Builder withType(Type type) {
this.type = type;
return this;
}
@Override
public Builder addTreatment(TrafficTreatment treatment) {
listBuilder.add(treatment);
return this;
}
/**
* Noop. This method has no effect.
*
* @param timeout a timeout
* @return a next objective builder
*/
@Override
public Builder makeTemporary(int timeout) {
return this;
}
/**
* Noop. This method has no effect.
*
* @return a next objective builder
*/
@Override
public Builder makePermanent() {
return this;
}
@Override
public Builder fromApp(ApplicationId appId) {
this.appId = appId;
return this;
}
/**
* Noop. This method has no effect.
*
* @param priority an integer
* @return a next objective builder
*/
@Override
public Builder withPriority(int priority) {
return this;
}
@Override
public NextObjective add() {
treatments = listBuilder.build();
op = Operation.ADD;
checkNotNull(appId, "Must supply an application id");
checkNotNull(id, "id cannot be null");
checkNotNull(type, "The type cannot be null");
checkArgument(!treatments.isEmpty(), "Must have at least one treatment");
return new DefaultNextObjective(this);
}
@Override
public NextObjective remove() {
treatments = listBuilder.build();
op = Operation.REMOVE;
checkNotNull(appId, "Must supply an application id");
checkNotNull(id, "id cannot be null");
checkNotNull(type, "The type cannot be null");
return new DefaultNextObjective(this);
}
@Override
public NextObjective add(ObjectiveContext context) {
treatments = listBuilder.build();
op = Operation.ADD;
this.context = context;
checkNotNull(appId, "Must supply an application id");
checkNotNull(id, "id cannot be null");
checkNotNull(type, "The type cannot be null");
checkArgument(!treatments.isEmpty(), "Must have at least one treatment");
return new DefaultNextObjective(this);
}
@Override
public NextObjective remove(ObjectiveContext context) {
treatments = listBuilder.build();
op = Operation.REMOVE;
this.context = context;
checkNotNull(appId, "Must supply an application id");
checkNotNull(id, "id cannot be null");
checkNotNull(type, "The type cannot be null");
return new DefaultNextObjective(this);
}
}
}
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