Example usage for io.netty.buffer ByteBuf isReadable

List of usage examples for io.netty.buffer ByteBuf isReadable

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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.pcep.spi.AbstractEROPathKeySubobjectParser.java

License:Open Source License

@Override
public final Subobject parseSubobject(final ByteBuf buffer, final boolean loose)
        throws PCEPDeserializerException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    checkContentLenght(buffer.readableBytes());
    final int pathKey = buffer.readUnsignedShort();
    final byte[] pceId = readPceId(buffer);
    final PathKeyBuilder pBuilder = new PathKeyBuilder();
    pBuilder.setPceId(new PceId(pceId));
    pBuilder.setPathKey(new PathKey(pathKey));
    final SubobjectBuilder builder = new SubobjectBuilder();
    builder.setLoose(loose);//from w ww. j  av  a2  s . com
    builder.setSubobjectType(new PathKeyCaseBuilder().setPathKey(pBuilder.build()).build());
    return builder.build();
}

From source file:org.opendaylight.protocol.pcep.spi.AbstractMessageParser.java

License:Open Source License

private List<Object> parseObjects(final ByteBuf bytes) throws PCEPDeserializerException {
    final List<Object> objs = new ArrayList<>();
    while (bytes.isReadable()) {
        if (bytes.readableBytes() < COMMON_OBJECT_HEADER_LENGTH) {
            throw new PCEPDeserializerException("Too few bytes in passed array. Passed: "
                    + bytes.readableBytes() + " Expected: >= " + COMMON_OBJECT_HEADER_LENGTH + ".");
        }/*w ww  . j  ava2 s  . c o m*/
        final int objClass = bytes.readUnsignedByte();

        final byte flagsByte = bytes.readByte();
        final BitArray flags = BitArray.valueOf(flagsByte);
        final int objType = UnsignedBytes.toInt(ByteArray.copyBitsRange(flagsByte, OT_SF_OFFSET, OT_SF_LENGTH));
        final int objLength = bytes.readUnsignedShort();

        if (bytes.readableBytes() < objLength - COMMON_OBJECT_HEADER_LENGTH) {
            throw new PCEPDeserializerException("Too few bytes in passed array. Passed: "
                    + bytes.readableBytes() + " Expected: >= " + objLength + ".");
        }
        // copy bytes for deeper parsing
        final ByteBuf bytesToPass = bytes.readSlice(objLength - COMMON_OBJECT_HEADER_LENGTH);

        final ObjectHeader header = new ObjectHeaderImpl(flags.get(PROCESSED), flags.get(IGNORED));

        if (VendorInformationUtil.isVendorInformationObject(objClass, objType)) {
            final EnterpriseNumber enterpriseNumber = new EnterpriseNumber(bytesToPass.readUnsignedInt());
            final Optional<? extends Object> obj = this.registry.parseVendorInformationObject(enterpriseNumber,
                    header, bytesToPass);
            if (obj.isPresent()) {
                objs.add(obj.get());
            }
        } else {
            // parseObject is required to return null for P=0 errored objects
            final Object o = this.registry.parseObject(objClass, objType, header, bytesToPass);
            if (o != null) {
                objs.add(o);
            }
        }
    }

    return objs;
}

From source file:org.opendaylight.protocol.pcep.spi.AbstractObjectWithTlvsParser.java

License:Open Source License

protected final void parseTlvs(final T builder, final ByteBuf bytes) throws PCEPDeserializerException {
    Preconditions.checkArgument(bytes != null, "Array of bytes is mandatory. Can't be null.");
    if (!bytes.isReadable()) {
        return;// w w w .  j av  a  2s.c o m
    }
    final List<VendorInformationTlv> viTlvs = Lists.newArrayList();
    while (bytes.isReadable()) {
        final int type = bytes.readUnsignedShort();
        final int length = bytes.readUnsignedShort();
        if (length > bytes.readableBytes()) {
            throw new PCEPDeserializerException("Wrong length specified. Passed: " + length + "; Expected: <= "
                    + bytes.readableBytes() + ".");
        }
        final ByteBuf tlvBytes = bytes.readSlice(length);
        LOG.trace("Parsing PCEP TLV : {}", ByteBufUtil.hexDump(tlvBytes));

        if (VendorInformationUtil.isVendorInformationTlv(type)) {
            final EnterpriseNumber enterpriseNumber = new EnterpriseNumber(tlvBytes.readUnsignedInt());
            final Optional<VendorInformationTlv> viTlv = this.viTlvReg
                    .parseVendorInformationTlv(enterpriseNumber, tlvBytes);
            if (viTlv.isPresent()) {
                LOG.trace("Parsed VENDOR-INFORMATION TLV {}.", viTlv.get());
                viTlvs.add(viTlv.get());
            }
        } else {
            final Tlv tlv = this.tlvReg.parseTlv(type, tlvBytes);
            if (tlv != null) {
                LOG.trace("Parsed PCEP TLV {}.", tlv);
                addTlv(builder, tlv);
            }
        }
        bytes.skipBytes(TlvUtil.getPadding(TlvUtil.HEADER_SIZE + length, TlvUtil.PADDED_TO));
    }
    addVendorInformationTlvs(builder, viTlvs);
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.AsNumberCaseParser.java

License:Open Source License

public static AsNumberCase parseSubobject(final ByteBuf buffer) throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    if (buffer.readableBytes() != CONTENT_LENGTH) {
        throw new RSVPParsingException("Wrong length of array of bytes. Passed: " + buffer.readableBytes()
                + "; Expected: " + CONTENT_LENGTH + ".");
    }/*from  ww w.j  a v  a 2 s  .  com*/
    return new AsNumberCaseBuilder()
            .setAsNumber(
                    new AsNumberBuilder().setAsNumber(new AsNumber((long) buffer.readUnsignedShort())).build())
            .build();
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROExplicitExclusionRouteSubobjectParser.java

License:Open Source License

@Override
public SubobjectContainer parseSubobject(final ByteBuf buffer, final boolean loose)
        throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final SubobjectContainerBuilder builder = new SubobjectContainerBuilder();
    builder.setLoose(loose);// www  .ja v a2s .  c  o  m
    final List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.exclude.route.object.exclude.route.object.SubobjectContainer> list = parseSubobject(
            buffer);
    final List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.exrs._case.exrs.Exrs> exrss = Lists
            .newArrayList();
    for (final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.exclude.route.object.exclude.route.object.SubobjectContainer s : list) {
        final org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.exrs._case.exrs.ExrsBuilder b = new org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.explicit.route.subobjects.subobject.type.exrs._case.exrs.ExrsBuilder();
        b.setAttribute(s.getAttribute());
        b.setMandatory(s.isMandatory());
        b.setSubobjectType(s.getSubobjectType());
        exrss.add(b.build());
    }
    builder.setSubobjectType(new ExrsCaseBuilder().setExrs(new ExrsBuilder().setExrs(exrss).build()).build());
    return builder.build();
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROExplicitExclusionRouteSubobjectParser.java

License:Open Source License

private List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.exclude.route.object.exclude.route.object.SubobjectContainer> parseSubobject(
        final ByteBuf buffer) throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.exclude.route.object.exclude.route.object.SubobjectContainer> subs = new ArrayList<>();
    while (buffer.isReadable()) {
        final boolean mandatory = ((buffer.getByte(buffer.readerIndex()) & (1 << Values.FIRST_BIT_OFFSET)) != 0)
                ? true/*w  w  w  .j a  v  a  2  s . c o m*/
                : false;
        final int type = (buffer.readUnsignedByte() & Values.BYTE_MAX_VALUE_BYTES)
                & ~(1 << Values.FIRST_BIT_OFFSET);
        final int length = buffer.readUnsignedByte() - HEADER_LENGTH;
        if (length > buffer.readableBytes()) {
            throw new RSVPParsingException(
                    "Wrong length specified. Passed: " + length + "; Expected: <= " + buffer.readableBytes());
        }
        subs.add(this.registry.parseSubobject(type, buffer.readSlice(length), mandatory));
    }
    return subs;
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROIpv4PrefixSubobjectParser.java

License:Open Source License

@Override
public SubobjectContainer parseSubobject(final ByteBuf buffer, final boolean loose)
        throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final SubobjectContainerBuilder builder = new SubobjectContainerBuilder();
    builder.setLoose(loose);//from   w w  w  . j  av a2 s  .c  o  m
    if (buffer.readableBytes() != CONTENT4_LENGTH) {
        throw new RSVPParsingException(
                "Wrong length of array of bytes. Passed: " + buffer.readableBytes() + ";");
    }
    final int length = buffer.getUnsignedByte(PREFIX4_F_OFFSET);
    final IpPrefixBuilder prefix = new IpPrefixBuilder().setIpPrefix(
            new IpPrefix(Ipv4Util.prefixForBytes(ByteArray.readBytes(buffer, Ipv4Util.IP4_LENGTH), length)));
    builder.setSubobjectType(new IpPrefixCaseBuilder().setIpPrefix(prefix.build()).build());
    return builder.build();
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROIpv6PrefixSubobjectParser.java

License:Open Source License

@Override
public SubobjectContainer parseSubobject(final ByteBuf buffer, final boolean loose)
        throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final SubobjectContainerBuilder builder = new SubobjectContainerBuilder();
    builder.setLoose(loose);/*from   w ww  .ja v  a2  s . c  o m*/
    if (buffer.readableBytes() != CONTENT_LENGTH) {
        throw new RSVPParsingException(
                "Wrong length of array of bytes. Passed: " + buffer.readableBytes() + ";");
    }
    final int length = buffer.getUnsignedByte(PREFIX_F_OFFSET);
    final IpPrefixBuilder prefix = new IpPrefixBuilder().setIpPrefix(
            new IpPrefix(Ipv6Util.prefixForBytes(ByteArray.readBytes(buffer, Ipv6Util.IPV6_LENGTH), length)));
    builder.setSubobjectType(new IpPrefixCaseBuilder().setIpPrefix(prefix.build()).build());
    return builder.build();
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROLabelSubobjectParser.java

License:Open Source License

@Override
public SubobjectContainer parseSubobject(final ByteBuf buffer, final boolean loose)
        throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    if (buffer.readableBytes() < HEADER_LENGTH) {
        throw new RSVPParsingException("Wrong length of array of bytes. Passed: " + buffer.readableBytes()
                + "; Expected: >" + HEADER_LENGTH + ".");
    }/*  w ww .  ja va2s  . c  o  m*/
    final BitArray reserved = BitArray.valueOf(buffer, FLAGS_SIZE);
    final short cType = buffer.readUnsignedByte();

    final LabelType labelType = this.registry.parseLabel(cType, buffer.slice());
    if (labelType == null) {
        throw new RSVPParsingException("Unknown C-TYPE for ero label subobject. Passed: " + cType);
    }
    final LabelBuilder builder = new LabelBuilder();
    builder.setUniDirectional(reserved.get(U_FLAG_OFFSET));
    builder.setLabelType(labelType);
    return new SubobjectContainerBuilder().setLoose(loose)
            .setSubobjectType(new LabelCaseBuilder().setLabel(builder.build()).build()).build();
}

From source file:org.opendaylight.protocol.rsvp.parser.impl.subobject.ero.EROPathKey128SubobjectParser.java

License:Open Source License

@Override
public SubobjectContainer parseSubobject(final ByteBuf buffer, final boolean loose)
        throws RSVPParsingException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    if (buffer.readableBytes() != CONTENT128_LENGTH) {
        throw new RSVPParsingException("Wrong length of array of bytes. Passed: " + buffer.readableBytes()
                + "; Expected: >" + CONTENT128_LENGTH + ".");
    }//w w  w  . j  a  v  a  2 s  . co  m
    final SubobjectContainerBuilder builder = new SubobjectContainerBuilder();
    builder.setLoose(loose);
    builder.setSubobjectType(
            new PathKeyCaseBuilder().setPathKey(parsePathKey(PCE128_ID_F_LENGTH, buffer)).build());
    return builder.build();
}