| /* |
| * Copyright 2024-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.bgpmonitoring.type; |
| |
| |
| import com.google.common.base.MoreObjects; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.nio.ByteBuffer; |
| |
| import org.onlab.packet.BasePacket; |
| import org.onlab.packet.Deserializer; |
| |
| import java.util.function.BiPredicate; |
| |
| import org.onosproject.bgpmonitoring.BmpMsg; |
| import org.onosproject.bgpmonitoring.BmpParseException; |
| |
| |
| public final class BmpInitMsg extends BasePacket implements BmpMsg { |
| |
| public static final int MESSAGE_HEADER_MIN_LENGTH = 4; |
| |
| private short type; |
| |
| private short length; |
| |
| private String data; |
| |
| private BmpInitMsg(Builder builder) { |
| this.type = builder.type; |
| this.length = builder.length; |
| this.data = builder.data; |
| } |
| |
| /** |
| * Returns initiation message type. |
| * |
| * @return initiation message type |
| */ |
| @Override |
| public short getType() { |
| return type; |
| } |
| |
| /** |
| * Returns initiation message length. |
| * |
| * @return initiation message length |
| */ |
| @Override |
| public short getLength() { |
| return length; |
| } |
| |
| /** |
| * Returns initiation message data. |
| * |
| * @return initiation message data |
| */ |
| @Override |
| public String getData() { |
| return data; |
| } |
| |
| /** |
| * Data deserializer function for BMP initiation message. |
| * |
| * @return data deserializer function |
| */ |
| public static Deserializer<BmpInitMsg> deserializer() { |
| return (data, offset, length) -> { |
| BiPredicate<ByteBuffer, Integer> isValidBuffer = (b, l) |
| -> b.hasRemaining() && b.remaining() >= l; |
| |
| ByteBuffer bb = ByteBuffer.wrap(data, offset, length); |
| if (!isValidBuffer.test(bb, MESSAGE_HEADER_MIN_LENGTH)) { |
| throw new BmpParseException("Invalid bmp initiation message buffer size."); |
| } |
| return new Builder().type(bb.getShort()) |
| .length(bb.getShort()) |
| .data(bb) |
| .build(); |
| }; |
| } |
| |
| @Override |
| public byte[] serialize() { |
| throw new UnsupportedOperationException("Not supported yet."); |
| } |
| |
| @Override |
| public String toString() { |
| |
| return MoreObjects.toStringHelper(getClass()) |
| .add("type", type) |
| .add("length", length) |
| .add("data", data) |
| .toString(); |
| } |
| |
| /** |
| * Builder for BMP initiation message. |
| */ |
| private static class Builder { |
| |
| private short type; |
| |
| private short length; |
| |
| private String data; |
| |
| /** |
| * Setter bmp initiation message type. |
| * |
| * @param type bmp initiation message type. |
| * @return this class builder. |
| */ |
| public Builder type(short type) { |
| this.type = type; |
| return this; |
| } |
| |
| /** |
| * Setter bmp initiation message length. |
| * |
| * @param length bmp initiation message length. |
| * @return this class builder. |
| */ |
| public Builder length(short length) { |
| this.length = length; |
| return this; |
| } |
| |
| /** |
| * Setter bmp initiation message. |
| * |
| * @param bb byte buffer. |
| * @return this class builder. |
| */ |
| public Builder data(ByteBuffer bb) { |
| if (length != 0 && bb.remaining() > length) { |
| throw new BmpParseException("Not enough readable bytes"); |
| } |
| byte[] dataBytes = new byte[length]; |
| bb.get(dataBytes); |
| switch (type) { |
| case 0: |
| this.data = new String(dataBytes, StandardCharsets.UTF_8); |
| break; |
| case 1: |
| case 2: |
| this.data = new String(dataBytes, StandardCharsets.US_ASCII); |
| break; |
| default: |
| this.data = new String(dataBytes, StandardCharsets.UTF_16); |
| } |
| return this; |
| } |
| |
| |
| /** |
| * Builds bmp initiation message. |
| * |
| * @return bmp initiation message. |
| */ |
| public BmpInitMsg build() { |
| return new BmpInitMsg(this); |
| } |
| } |
| } |