Example usage for io.netty.buffer ByteBuf isReadable

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf isReadable.

Prototype

public abstract boolean isReadable();

Source Link

Document

Returns true if and only if (this.writerIndex - this.readerIndex) is greater than 0 .

Usage

From source file:org.opendaylight.protocol.bgp.evpn.spi.pojo.SimpleEsiTypeRegistry.java

License:Open Source License

@Override
public Esi parseEsi(final ByteBuf buffer) {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    Preconditions.checkArgument(buffer.readableBytes() == CONTENT_LENGTH,
            "Wrong length of array of bytes. Passed: " + buffer.readableBytes() + ";");

    final EsiParser parser = this.handlers.getParser(EsiType.forValue(buffer.readByte()).getIntValue());
    if (parser == null) {
        return null;
    }//from  w  w w  .j  a  va2  s. c  om
    return parser.parseEsi(buffer.readSlice(ESI_LENGTH));
}

From source file:org.opendaylight.protocol.bgp.evpn.spi.pojo.SimpleEvpnNlriRegistry.java

License:Open Source License

@Override
public EvpnChoice parseEvpn(final NlriType type, final ByteBuf buffer) {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final EvpnParser parser = this.handlers.getParser(type.getIntValue());
    if (parser == null) {
        return null;
    }//w ww  .  j  a v  a2  s .  c o  m
    return parser.parseEvpn(buffer);
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFlowspecNlriParser.java

License:Open Source License

/**
 * Parses Flowspec NLRI into list of Flowspec.
 *
 * @param nlri byte representation of NLRI which will be parsed
 * @return list of Flowspec/*from  w  w w .  j a  v a 2  s.  c  om*/
 */
protected final List<Flowspec> parseNlriFlowspecList(@Nonnull final ByteBuf nlri) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return null;
    }
    final List<Flowspec> fss = new ArrayList<>();

    while (nlri.isReadable()) {
        final FlowspecBuilder builder = new FlowspecBuilder();
        builder.setFlowspecType(this.flowspecTypeRegistry.parseFlowspecType(nlri));
        fss.add(builder.build());
    }
    return fss;
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFlowspecNlriParser.java

License:Open Source License

@Override
public final void parseNlri(@Nonnull final ByteBuf nlri, @Nonnull final MpReachNlriBuilder builder,
        @Nullable final PeerSpecificParserConstraint constraint) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;// ww w . j a  va2 s  .  c  om
    }
    final PathId pathId = readPathId(nlri, builder.getAfi(), builder.getSafi(), constraint);
    verifyNlriLength(nlri);
    final Object[] nlriFields = parseNlri(nlri);
    builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder()
            .setDestinationType(createAdvertizedRoutesDestinationType(nlriFields, pathId)).build());
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFlowspecNlriParser.java

License:Open Source License

@Override
public final void parseNlri(@Nonnull final ByteBuf nlri, @Nonnull final MpUnreachNlriBuilder builder,
        @Nullable final PeerSpecificParserConstraint constraint) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;/*from w ww .  j  a  v a2 s.  com*/
    }
    final PathId pathId = readPathId(nlri, builder.getAfi(), builder.getSafi(), constraint);
    verifyNlriLength(nlri);
    final Object[] nlriFields = parseNlri(nlri);
    builder.setWithdrawnRoutes(new WithdrawnRoutesBuilder()
            .setDestinationType(createWithdrawnDestinationType(nlriFields, pathId)).build());
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFSNlriParser.java

License:Open Source License

@Override
public final void parseNlri(final ByteBuf nlri, final MpUnreachNlriBuilder builder) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;//from www .  j  a  v  a 2 s .  c o m
    }
    final List<Flowspec> dst = parseNlri(nlri);

    builder.setWithdrawnRoutes(
            new WithdrawnRoutesBuilder().setDestinationType(createWidthdrawnDestinationType(dst)).build());
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFSNlriParser.java

License:Open Source License

@Override
public final void parseNlri(final ByteBuf nlri, final MpReachNlriBuilder builder) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return;/*w  w  w  . ja v a 2  s  .c  om*/
    }
    final List<Flowspec> dst = parseNlri(nlri);
    builder.setAdvertizedRoutes(new AdvertizedRoutesBuilder()
            .setDestinationType(createAdvertizedRoutesDestinationType(dst)).build());
}

From source file:org.opendaylight.protocol.bgp.flowspec.AbstractFSNlriParser.java

License:Open Source License

/**
 * Parses Flowspec NLRI into list of Flowspec.
 *
 * @param nlri byte representation of NLRI which will be parsed
 * @return list of Flowspec//w  w w . j  av  a  2 s .  c om
 */
public final List<Flowspec> parseNlri(final ByteBuf nlri) throws BGPParsingException {
    if (!nlri.isReadable()) {
        return null;
    }
    final List<Flowspec> fss = new ArrayList<>();

    // length field can be one or two bytes (if needed)
    // check the length of nlri to see how many bytes we can skip
    final int length = nlri.readableBytes();
    nlri.skipBytes(length > MAX_NLRI_LENGTH_ONE_BYTE ? NLRI_LENGTH_EXTENDED : NLRI_LENGTH);

    while (nlri.isReadable()) {
        final FlowspecBuilder builder = new FlowspecBuilder();
        final short type = nlri.readUnsignedByte();
        setFlowspecType(builder, type, nlri);
        fss.add(builder.build());
    }
    return fss;
}

From source file:org.opendaylight.protocol.bgp.inet.codec.Ipv4NlriParser.java

License:Open Source License

private static DestinationIpv4 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraints,
        final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
    final List<Ipv4Prefixes> prefixes = new ArrayList<>();
    while (nlri.isReadable()) {
        final Ipv4PrefixesBuilder prefixesBuilder = new Ipv4PrefixesBuilder();
        if (MultiPathSupportUtil.isTableTypeSupported(constraints, new BgpTableTypeImpl(afi, safi))) {
            prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
        }//ww w. ja v a2  s .c om
        prefixesBuilder.setPrefix(Ipv4Util.prefixForByteBuf(nlri));
        prefixes.add(prefixesBuilder.build());
    }
    return new DestinationIpv4Builder().setIpv4Prefixes(prefixes).build();
}

From source file:org.opendaylight.protocol.bgp.inet.codec.Ipv6NlriParser.java

License:Open Source License

private static DestinationIpv6 prefixes(final ByteBuf nlri, final PeerSpecificParserConstraint constraint,
        final Class<? extends AddressFamily> afi, final Class<? extends SubsequentAddressFamily> safi) {
    final List<Ipv6Prefixes> prefixes = new ArrayList<>();
    final boolean supported = MultiPathSupportUtil.isTableTypeSupported(constraint,
            new BgpTableTypeImpl(afi, safi));
    while (nlri.isReadable()) {
        final Ipv6PrefixesBuilder prefixesBuilder = new Ipv6PrefixesBuilder();
        if (supported) {
            prefixesBuilder.setPathId(PathIdUtil.readPathId(nlri));
        }//from w w w.j a  v a  2  s  .  co m
        prefixesBuilder.setPrefix(Ipv6Util.prefixForByteBuf(nlri));
        prefixes.add(prefixesBuilder.build());
    }
    return new DestinationIpv6Builder().setIpv6Prefixes(prefixes).build();
}