Java ChannelBuffer.readLong方法代碼示例

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
private long readValue(ChannelBuffer buf, int length, boolean signed) {
    switch (length) {
        case 1:
            return signed ? buf.readByte() : buf.readUnsignedByte();
        case 2:
            return signed ? buf.readShort() : buf.readUnsignedShort();
        case 4:
            return signed ? buf.readInt() : buf.readUnsignedInt();
        default:
            return buf.readLong();
    }
}
 

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
/**
 * Reads the Extended Tag.
 *
 * @param cb ChannelBuffer
 * @return object of BgpPrefixAttrExtRouteTag
 * @throws BgpParseException while parsing BgpPrefixAttrExtRouteTag
 */
public static BgpPrefixAttrExtRouteTag read(ChannelBuffer cb)
        throws BgpParseException {
    ArrayList<Long> pfxExtRouteTag = new ArrayList<Long>();
    long temp;

    short lsAttrLength = cb.readShort();
    int len = lsAttrLength / ATTR_PREFIX_EXT_LEN;

    if (cb.readableBytes() < lsAttrLength) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR,
                               BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                               lsAttrLength);
    }

    for (int i = 0; i < len; i++) {
        temp = cb.readLong();
        pfxExtRouteTag.add(new Long(temp));
    }

    return new BgpPrefixAttrExtRouteTag(pfxExtRouteTag);
}
 

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
private void decodeEventData(Position position, ChannelBuffer buf, int event) {
    switch (event) {
        case 2:
        case 40:
            buf.readUnsignedByte();
            break;
        case 9:
            buf.readUnsignedMedium();
            break;
        case 31:
        case 32:
            buf.readUnsignedShort();
            break;
        case 38:
            buf.skipBytes(4 * 9);
            break;
        case 113:
            buf.readUnsignedInt();
            buf.readUnsignedByte();
            break;
        case 121:
        case 142:
            buf.readLong();
            break;
        case 130:
            buf.readUnsignedInt(); // incorrect
            break;
        case 188:
            decodeEB(position, buf);
            break;
        default:
            break;
    }
}
 

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
/**
 * Gets the OSPF packet Header.
 *
 * @param channelBuffer channel buffer instance.
 * @return Ospf Header instance.
 */
private OspfPacketHeader getOspfHeader(ChannelBuffer channelBuffer) throws Exception {
    OspfPacketHeader ospfPacketHeader = new OspfPacketHeader();

    // Determine OSPF version & Packet Type
    int version = channelBuffer.readByte(); //byte 1 is ospf version
    int packetType = channelBuffer.readByte(); //byte 2 is ospf packet type

    // byte 3 & 4 combine is packet length.
    int packetLength = channelBuffer.readShort();

    byte[] tempByteArray = new byte[OspfUtil.FOUR_BYTES];
    channelBuffer.readBytes(tempByteArray, 0, OspfUtil.FOUR_BYTES);
    Ip4Address routerId = Ip4Address.valueOf(tempByteArray);

    tempByteArray = new byte[OspfUtil.FOUR_BYTES];
    channelBuffer.readBytes(tempByteArray, 0, OspfUtil.FOUR_BYTES);
    Ip4Address areaId = Ip4Address.valueOf(tempByteArray);

    int checkSum = channelBuffer.readUnsignedShort();
    int auType = channelBuffer.readUnsignedShort();
    int authentication = (int) channelBuffer.readLong();

    ospfPacketHeader.setOspfVer(version);
    ospfPacketHeader.setOspftype(packetType);
    ospfPacketHeader.setOspfPacLength(packetLength);
    ospfPacketHeader.setRouterId(routerId);
    ospfPacketHeader.setAreaId(areaId);
    ospfPacketHeader.setChecksum(checkSum);
    ospfPacketHeader.setAuthType(auType);
    ospfPacketHeader.setAuthentication(authentication);

    return ospfPacketHeader;
}
 

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
/**
 * Reads from the channel buffer and returns Object of PcepLSObject.
 *
 * @param cb of type channel buffer
 * @return Object of PcepLSObject
 * @throws PcepParseException if mandatory fields are missing
 */
public static PcepLSObject read(ChannelBuffer cb) throws PcepParseException {
    log.debug("read");

    PcepObjectHeader lsObjHeader;
    byte protocolId;
    // 2-flags
    boolean removeFlag;
    boolean syncFlag;
    long lsId;
    List<PcepValueType> optionalTlvList;

    lsObjHeader = PcepObjectHeader.read(cb);

    //take only LSObject buffer.
    ChannelBuffer tempCb = cb.readBytes(lsObjHeader.getObjLen() - OBJECT_HEADER_LENGTH);

    protocolId = tempCb.readByte();
    //ignore first two bytes of Flags
    tempCb.readShort();

    Integer iTemp = (int) tempCb.readByte(); //read 3rd byte Flag
    syncFlag = (iTemp & FLAG_SET_S_FLAG) == FLAG_SET_S_FLAG;
    removeFlag = (iTemp & FLAG_SET_R_FLAG) == FLAG_SET_R_FLAG;

    lsId = tempCb.readLong();

    // parse optional TLV
    optionalTlvList = parseOptionalTlv(tempCb);

    return new PcepLSObjectVer1(lsObjHeader, protocolId, removeFlag, syncFlag, lsId, optionalTlvList);
}
 

import org.jboss.netty.buffer.ChannelBuffer; //導入方法依賴的package包/類
/**
 * Reads route distinguisher from channelBuffer.
 *
 * @param cb channelBuffer
 * @return object of RouteDistinguisher
 */
public static RouteDistinguisher read(ChannelBuffer cb) {
    return new RouteDistinguisher(cb.readLong());
}