Java Validation类代码示例

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the channel buffer and returns object of Med.
 *
 * @param cb ChannelBuffer
 * @return object of Med
 * @throws BgpParseException while parsing Med path attribute
 */
public static Med read(ChannelBuffer cb) throws BgpParseException {
    int med;
    ChannelBuffer tempCb = cb.copy();
    Validation parseFlags = Validation.parseAttributeHeader(cb);

    if ((parseFlags.getLength() > MED_MAX_LEN) || cb.readableBytes() < parseFlags.getLength()) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                parseFlags.getLength());
    }
    int len = parseFlags.isShort() ? parseFlags.getLength() + Constants.TYPE_AND_LEN_AS_SHORT : parseFlags
            .getLength() + Constants.TYPE_AND_LEN_AS_BYTE;
    ChannelBuffer data = tempCb.readBytes(len);
    if (!parseFlags.getFirstBit() && parseFlags.getSecondBit() && parseFlags.getThirdBit()) {
        throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_FLAGS_ERROR, data);
    }

    med = cb.readInt();
    return new Med(med);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the channel buffer and returns object of LocalPref.
 *
 * @param cb channelBuffer
 * @return object of LocalPref
 * @throws BgpParseException while parsing localPref attribute
 */
public static LocalPref read(ChannelBuffer cb) throws BgpParseException {
    int localPref;
    ChannelBuffer tempCb = cb.copy();
    Validation parseFlags = Validation.parseAttributeHeader(cb);
    if ((parseFlags.getLength() > LOCAL_PREF_MAX_LEN) || cb.readableBytes() < parseFlags.getLength()) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                parseFlags.getLength());
    }

    int len = parseFlags.isShort() ? parseFlags.getLength() +
              Constants.TYPE_AND_LEN_AS_SHORT : parseFlags.getLength() + Constants.TYPE_AND_LEN_AS_BYTE;
    ChannelBuffer data = tempCb.readBytes(len);
    if (parseFlags.getFirstBit()) {
        throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_FLAGS_ERROR, data);
    }

    localPref = cb.readInt();
    return new LocalPref(localPref);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads from ChannelBuffer and parses NextHop.
 *
 * @param cb ChannelBuffer
 * @return object of NextHop
 * @throws BgpParseException while parsing nexthop attribute
 */
public static NextHop read(ChannelBuffer cb) throws BgpParseException {
    Ip4Address nextHop;
    ChannelBuffer tempCb = cb.copy();
    Validation parseFlags = Validation.parseAttributeHeader(cb);

    if (cb.readableBytes() < parseFlags.getLength()) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                parseFlags.getLength());
    }
    int len = parseFlags.isShort() ? parseFlags.getLength() + Constants.TYPE_AND_LEN_AS_SHORT : parseFlags
            .getLength() + Constants.TYPE_AND_LEN_AS_BYTE;
    ChannelBuffer data = tempCb.readBytes(len);
    if (parseFlags.getFirstBit() && !parseFlags.getSecondBit() && parseFlags.getThirdBit()) {
        throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_FLAGS_ERROR, data);
    }

     InetAddress ipAddress = Validation.toInetAddress(parseFlags.getLength(), cb);
    if (ipAddress.isMulticastAddress()) {
        throw new BgpParseException("Multicast address is not supported");
    }

    nextHop = Ip4Address.valueOf(ipAddress);
    return new NextHop(nextHop);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the BGP link attributes of Maximum link bandwidth.
 *
 * @param cb Channel buffer
 * @param sType returns the tag value
 * @return object of type BgpLinkAttrMaxLinkBandwidth
 * @throws BgpParseException while parsing BgpLinkAttrMaxLinkBandwidth
 */
public static BgpLinkAttrUnRsrvdLinkBandwidth read(ChannelBuffer cb,
                                                   short sType)
                                                           throws BgpParseException {
    ArrayList<Float> maxUnResBandwidth = new ArrayList<Float>();
    float tmp;
    short lsAttrLength = cb.readShort();

    if ((lsAttrLength != MAX_BANDWIDTH_LEN * NO_OF_PRIORITY)
            || (cb.readableBytes() < lsAttrLength)) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR,
                               BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                               lsAttrLength);
    }

    for (int i = 0; i < NO_OF_PRIORITY; i++) {
        tmp = ieeeToFloatRead(cb.readInt()) * NO_OF_BITS;
        maxUnResBandwidth.add(new Float(tmp));
    }

    return BgpLinkAttrUnRsrvdLinkBandwidth.of(maxUnResBandwidth, sType);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the Opaque Node Properties.
 *
 * @param cb ChannelBuffer
 * @return object of BgpAttrOpaqueNode
 * @throws BgpParseException while parsing BgpAttrOpaqueNode
 */
public static BgpAttrOpaqueNode read(ChannelBuffer cb)
        throws BgpParseException {

    byte[] opaqueNodeAttribute;

    short lsAttrLength = cb.readShort();

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

    opaqueNodeAttribute = new byte[lsAttrLength];
    cb.readBytes(opaqueNodeAttribute);

    return BgpAttrOpaqueNode.of(opaqueNodeAttribute);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the BGP link attributes Shared Risk link group data.
 *
 * @param cb Channel buffer
 * @return object of type BgpLinkAttrSrlg
 * @throws BgpParseException while parsing BgpLinkAttrSrlg
 */
public static BgpLinkAttrSrlg read(ChannelBuffer cb)
        throws BgpParseException {
    int tempSrlg;
    ArrayList<Integer> sRlg = new ArrayList<Integer>();

    short lsAttrLength = cb.readShort();
    int len = lsAttrLength / SIZE; // each element is of 4 octets

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

    for (int i = 0; i < len; i++) {
        tempSrlg = cb.readInt();
        sRlg.add(new Integer(tempSrlg));
    }

    return BgpLinkAttrSrlg.of(sRlg);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the BGP link attributes of TE default metric.
 *
 * @param cb Channel buffer
 * @return object of type BgpLinkAttrTeDefaultMetric
 * @throws BgpParseException while parsing BgpLinkAttrTeDefaultMetric
 */
public static BgpLinkAttrTeDefaultMetric read(ChannelBuffer cb)
        throws BgpParseException {
    int linkTeMetric;

    short lsAttrLength = cb.readShort();

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

    linkTeMetric = cb.readInt();

    return new BgpLinkAttrTeDefaultMetric(linkTeMetric);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the IS-IS Area Identifier.
 *
 * @param cb ChannelBuffer
 * @return object of BgpAttrNodeIsIsAreaId
 * @throws BgpParseException while parsing BgpAttrNodeIsIsAreaId
 */
public static BgpAttrNodeIsIsAreaId read(ChannelBuffer cb)
        throws BgpParseException {
    byte[] isisAreaId;

    short lsAttrLength = cb.readShort();

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

    isisAreaId = new byte[lsAttrLength];
    cb.readBytes(isisAreaId);

    return BgpAttrNodeIsIsAreaId.of(isisAreaId);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the Prefix Metric.
 *
 * @param cb ChannelBuffer
 * @return object of BgpPrefixAttrMetric
 * @throws BgpParseException while parsing BgpPrefixAttrMetric
 */
public static BgpPrefixAttrMetric read(ChannelBuffer cb)
        throws BgpParseException {
    int linkPfxMetric;

    short lsAttrLength = cb.readShort(); // 4 Bytes

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

    linkPfxMetric = cb.readInt();

    return BgpPrefixAttrMetric.of(linkPfxMetric);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the Node Flag Bits.
 *
 * @param cb ChannelBuffer
 * @return attribute node flag bit tlv
 * @throws BgpParseException while parsing BgpAttrNodeFlagBitTlv
 */
public static BgpAttrNodeFlagBitTlv read(ChannelBuffer cb)
        throws BgpParseException {
    boolean bOverloadBit = false;
    boolean bAttachedBit = false;
    boolean bExternalBit = false;
    boolean bAbrBit = false;

    short lsAttrLength = cb.readShort();

    if ((lsAttrLength != 1) || (cb.readableBytes() < lsAttrLength)) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR,
                               BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                               lsAttrLength);
    }

    byte nodeFlagBits = cb.readByte();

    bOverloadBit = ((nodeFlagBits & FIRST_BIT) == FIRST_BIT);
    bAttachedBit = ((nodeFlagBits & SECOND_BIT) == SECOND_BIT);
    bExternalBit = ((nodeFlagBits & THIRD_BIT) == THIRD_BIT);
    bAbrBit = ((nodeFlagBits & FOURTH_BIT) == FOURTH_BIT);

    return BgpAttrNodeFlagBitTlv.of(bOverloadBit, bAttachedBit,
                                    bExternalBit, bAbrBit);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the IPv6 Router-ID.
 *
 * @param cb ChannelBuffer
 * @param sType TLV type
 * @return object of BgpAttrRouterIdV6
 * @throws BgpParseException while parsing BgpAttrRouterIdV6
 */
public static BgpAttrRouterIdV6 read(ChannelBuffer cb, short sType)
        throws BgpParseException {
    byte[] ipBytes;
    Ip6Address ip6RouterId;

    short lsAttrLength = cb.readShort();

    if ((lsAttrLength != 16) || (cb.readableBytes() < lsAttrLength)) {
        Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR,
                               BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
                               lsAttrLength);
    }

    ipBytes = new byte[lsAttrLength];
    cb.readBytes(ipBytes);
    ip6RouterId = Ip6Address.valueOf(ipBytes);
    return BgpAttrRouterIdV6.of(ip6RouterId, sType);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the Multi-topology ID of Node attribute.
 *
 * @param cb ChannelBuffer
 * @return Constructor of BgpAttrNodeMultiTopologyId
 * @throws BgpParseException while parsing BgpAttrNodeMultiTopologyId
 */
public static BgpAttrNodeMultiTopologyId read(ChannelBuffer cb)
        throws BgpParseException {
    ArrayList<Short> multiTopologyId = new ArrayList<Short>();
    short tempMultiTopologyId;
    short lsAttrLength = cb.readShort();
    int len = lsAttrLength / 2; // Length is 2*n and n is the number of MT-IDs

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

    for (int i = 0; i < len; i++) {
        tempMultiTopologyId = cb.readShort();
        multiTopologyId.add(new Short(tempMultiTopologyId));
    }

    return new BgpAttrNodeMultiTopologyId(multiTopologyId);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the BGP link attributes of ISIS administrative group area.
 *
 * @param cb Channel buffer
 * @return object of type BgpLinkAttrIsIsAdminstGrp
 * @throws BgpParseException while parsing BgpLinkAttrIsIsAdminstGrp
 */
public static BgpLinkAttrIsIsAdminstGrp read(ChannelBuffer cb)
        throws BgpParseException {
    long isisAdminGrp;
    short lsAttrLength = cb.readShort();

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

    isisAdminGrp = cb.readUnsignedInt();

    return BgpLinkAttrIsIsAdminstGrp.of(isisAdminGrp);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the LS attribute node name.
 *
 * @param cb ChannelBuffer
 * @return object of BgpAttrNodeName
 * @throws BgpParseException while parsing BgpAttrNodeName
 */
public static BgpAttrNodeName read(ChannelBuffer cb)
        throws BgpParseException {
    byte[] nodeName;

    short lsAttrLength = cb.readShort();

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

    nodeName = new byte[lsAttrLength];
    cb.readBytes(nodeName);
    return BgpAttrNodeName.of(nodeName);
}
 

import org.onosproject.bgpio.util.Validation; //导入依赖的package包/类
/**
 * Reads the BGP link attributes Name.
 *
 * @param cb Channel buffer
 * @return object of type BgpLinkAttrName
 * @throws BgpParseException while parsing BgpLinkAttrName
 */
public static BgpLinkAttrName read(ChannelBuffer cb)
        throws BgpParseException {
    byte[] linkName;
    short lsAttrLength = cb.readShort();

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

    linkName = new byte[lsAttrLength];
    cb.readBytes(linkName);
    return BgpLinkAttrName.of(linkName);
}