| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * 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.routing.fpm.protocol; |
| |
| import com.google.common.base.MoreObjects; |
| import org.onlab.packet.DeserializationException; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Priority route attribute. |
| */ |
| public final class RouteAttributePriority extends RouteAttribute { |
| |
| private static final int VALUE_LENGTH = 4; |
| |
| private final long priority; |
| |
| /** |
| * Class constructor. |
| * |
| * @param length length |
| * @param type type |
| * @param priority priority |
| */ |
| private RouteAttributePriority(int length, int type, long priority) { |
| super(length, type); |
| |
| this.priority = priority; |
| } |
| |
| /** |
| * Returns the priority. |
| * |
| * @return priority |
| */ |
| public long priority() { |
| return priority; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("type", type()) |
| .add("length", length()) |
| .add("priority", priority) |
| .toString(); |
| } |
| |
| /** |
| * Returns a decoder for a priority route attribute. |
| * |
| * @return priority route attribute decoder |
| */ |
| public static RouteAttributeDecoder<RouteAttributePriority> decoder() { |
| return (int length, int type, byte[] value) -> { |
| if (value.length != VALUE_LENGTH) { |
| throw new DeserializationException("Wrong value length"); |
| } |
| |
| long priority = Integer.reverseBytes(ByteBuffer.wrap(value).getInt()); |
| |
| return new RouteAttributePriority(length, type, priority); |
| }; |
| } |
| |
| /** |
| * Encode the RouteAttributePriority contents into the ChannelBuffer. |
| * |
| * @param cb channelbuffer to be filled in |
| */ |
| @Override |
| public void encode(ChannelBuffer cb) { |
| |
| super.encode(cb); |
| cb.writeInt(Integer.reverseBytes((int) priority)); |
| } |
| |
| /** |
| * Returns a new RouteAttributePriority builder. |
| * |
| * @return RouteAttributePriority builder |
| */ |
| public static Builder builder() { |
| return new Builder(); |
| } |
| |
| /** |
| * RouteAttributePriority Builder. |
| */ |
| public static final class Builder extends RouteAttribute.Builder<Builder> { |
| |
| private long priority = 0; |
| |
| /** |
| * Hide class constructor. |
| */ |
| private Builder() {} |
| |
| /** |
| * Override abstract method. |
| */ |
| @Override |
| public Builder getThis() { |
| return this; |
| } |
| |
| /** |
| * Sets priority for RouteAttributePriority that will be built. |
| * |
| * @param priority to use for built RouteAttributePriority |
| * @return this builder |
| */ |
| public Builder priority(long priority) { |
| this.priority = priority; |
| return this; |
| } |
| |
| /** |
| * Builds the RouteAttributePriority. |
| * |
| * @return RouteAttributePriority reference |
| */ |
| public RouteAttributePriority build() { |
| return new RouteAttributePriority(length, type, priority); |
| } |
| } |
| } |