Example usage for io.netty.buffer ByteBuf readSlice

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

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Introduction

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

Prototype

public abstract ByteBuf readSlice(int length);

Source Link

Document

Returns a new slice of this buffer's sub-region starting at the current readerIndex and increases the readerIndex by the size of the new slice (= length ).

Usage

From source file:org.opendaylight.protocol.bmp.spi.parser.AbstractBmpMessageWithTlvParser.java

License:Open Source License

protected final void parseTlvs(final T builder, final ByteBuf bytes) throws BmpDeserializationException {
    Preconditions.checkArgument(bytes != null, "Array of bytes is mandatory. Can't be null.");
    if (!bytes.isReadable()) {
        return;/*from   w ww .j a va 2s. c  om*/
    }
    while (bytes.isReadable()) {
        final int type = bytes.readUnsignedShort();
        final int length = bytes.readUnsignedShort();
        if (length > bytes.readableBytes()) {
            throw new BmpDeserializationException("Wrong length specified. Passed: " + length
                    + "; Expected: <= " + bytes.readableBytes() + ".");
        }
        final ByteBuf tlvBytes = bytes.readSlice(length);
        LOG.trace("Parsing BMP TLV : {}", ByteBufUtil.hexDump(tlvBytes));

        final Tlv tlv = this.tlvRegistry.parseTlv(type, tlvBytes);
        if (tlv != null) {
            LOG.trace("Parsed BMP TLV {}.", tlv);
            addTlv(builder, tlv);
        }
    }
}

From source file:org.opendaylight.protocol.pcep.impl.object.AbstractEROWithSubobjectsParser.java

License:Open Source License

protected List<Subobject> parseSubobjects(final ByteBuf buffer) throws PCEPDeserializerException {
    // Explicit approval of empty ERO
    Preconditions.checkArgument(buffer != null, "Array of bytes is mandatory. Can't be null.");
    final List<Subobject> subs = new ArrayList<>();
    while (buffer.isReadable()) {
        final boolean loose = ((buffer.getUnsignedByte(buffer.readerIndex())
                & (1 << Values.FIRST_BIT_OFFSET)) != 0) ? true : 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 PCEPDeserializerException(
                    "Wrong length specified. Passed: " + length + "; Expected: <= " + buffer.readableBytes());
        }// w  w  w  .  j  av  a  2s.  co m
        LOG.debug("Attempt to parse subobject from bytes: {}", ByteBufUtil.hexDump(buffer));
        final Subobject sub = this.subobjReg.parseSubobject(type, buffer.readSlice(length), loose);
        if (sub == null) {
            LOG.warn("Unknown subobject type: {}. Ignoring subobject.", type);
        } else {
            LOG.debug("Subobject was parsed. {}", sub);
            subs.add(sub);
        }
    }
    return subs;
}

From source file:org.opendaylight.protocol.pcep.impl.object.AbstractRROWithSubobjectsParser.java

License:Open Source License

protected List<Subobject> parseSubobjects(final ByteBuf buffer) throws PCEPDeserializerException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final List<Subobject> subs = new ArrayList<>();
    while (buffer.isReadable()) {
        final int type = buffer.readUnsignedByte();
        final int length = buffer.readUnsignedByte() - HEADER_LENGTH;
        if (length > buffer.readableBytes()) {
            throw new PCEPDeserializerException(
                    "Wrong length specified. Passed: " + length + "; Expected: <= " + buffer.readableBytes());
        }/* w  w  w. j av a 2 s. c o m*/
        LOG.debug("Attempt to parse subobject from bytes: {}", ByteBufUtil.hexDump(buffer));
        final Subobject sub = this.subobjReg.parseSubobject(type, buffer.readSlice(length));
        if (sub == null) {
            LOG.warn("Unknown subobject type: {}. Ignoring subobject.", type);
        } else {
            LOG.debug("Subobject was parsed. {}", sub);
            subs.add(sub);
        }
    }
    return subs;
}

From source file:org.opendaylight.protocol.pcep.impl.object.AbstractXROWithSubobjectsParser.java

License:Open Source License

protected List<Subobject> parseSubobjects(final ByteBuf buffer) throws PCEPDeserializerException {
    Preconditions.checkArgument(buffer != null && buffer.isReadable(),
            "Array of bytes is mandatory. Can't be null or empty.");
    final List<Subobject> subs = new ArrayList<>();
    while (buffer.isReadable()) {
        final boolean mandatory = ((buffer.getUnsignedByte(buffer.readerIndex())
                & (1 << Values.FIRST_BIT_OFFSET)) != 0) ? true : false;
        final int type = UnsignedBytes.checkedCast(
                (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 PCEPDeserializerException(
                    "Wrong length specified. Passed: " + length + "; Expected: <= " + buffer.readableBytes());
        }/*  ww w  .  j a va2  s  . c  o m*/
        LOG.debug("Attempt to parse subobject from bytes: {}", ByteBufUtil.hexDump(buffer));
        final Subobject sub = this.subobjReg.parseSubobject(type, buffer.readSlice(length), mandatory);
        if (sub == null) {
            LOG.warn("Unknown subobject type: {}. Ignoring subobject.", type);
        } else {
            LOG.debug("Subobject was parsed. {}", sub);
            subs.add(sub);
        }
    }
    return subs;
}

From source file:org.opendaylight.protocol.pcep.impl.PCEPObjectParserTest.java

License:Open Source License

@Test
public void testVendorInformationObject() throws PCEPDeserializerException {
    final byte[] viObjBytes = {
            /* vendor-information object */
            0x22, 0x10, 0x00, 0x0C,/* w  w  w  . j  a  v a 2 s.c o m*/
            /* enterprise number */
            0x00, 0x00, 0x00, 0x00,
            /* enterprise specific information */
            0x00, 0x00, 0x00, 0x05 };
    final TestVendorInformationObjectParser parser = new TestVendorInformationObjectParser();
    final TestEnterpriseSpecificInformation esInfo = new TestEnterpriseSpecificInformation(5);
    final VendorInformationObject viObj = new VendorInformationObjectBuilder()
            .setEnterpriseNumber(new EnterpriseNumber(0L)).setEnterpriseSpecificInformation(esInfo).build();
    final ByteBuf result = Unpooled.wrappedBuffer(viObjBytes);
    result.readerIndex(8);
    final VendorInformationObject o = (VendorInformationObject) parser
            .parseObject(new ObjectHeaderImpl(false, false), result.readSlice(result.readableBytes()));
    assertEquals(viObj, o);

    final ByteBuf buf = Unpooled.buffer(viObjBytes.length);
    parser.serializeObject(viObj, buf);
    assertArrayEquals(result.array(), ByteArray.getAllBytes(buf));
}

From source file:org.opendaylight.protocol.pcep.impl.subobject.EROExplicitExclusionRouteSubobjectParser.java

License:Open Source License

private List<org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.exclude.route.object.xro.Subobject> parseSubobject(
        final ByteBuf buffer) throws PCEPDeserializerException {
    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.pcep.types.rev131005.exclude.route.object.xro.Subobject> subs = new ArrayList<>();
    while (buffer.isReadable()) {
        final boolean mandatory = ((buffer.getByte(buffer.readerIndex()) & (1 << Values.FIRST_BIT_OFFSET)) != 0)
                ? true//ww  w .ja v  a  2s  . co 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 PCEPDeserializerException(
                    "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.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 + ".");
        }//ww  w .  ja v a 2 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;/*from  w ww.ja  v a 2 s .com*/
    }
    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.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//from w ww.java 2s .  co  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.te.AttributesObjectParser.java

License:Open Source License

@Override
protected RsvpTeObject localParseObject(final ByteBuf byteBuf) throws RSVPParsingException {
    final LspAttributesObjectBuilder builder = new LspAttributesObjectBuilder();

    final List<SubobjectContainer> subObjectList = new ArrayList<>();
    while (byteBuf.isReadable()) {
        final int type = byteBuf.readUnsignedShort();
        final int length = byteBuf.readUnsignedShort();
        final ByteBuf value = byteBuf.readSlice(length);
        final SubobjectContainerBuilder subObj = new SubobjectContainerBuilder();
        if (type == FLAG_TLV_TYPE) {
            subObj.setLspSubobject(new FlagsTlvBuilder().setFlagContainer(parseFlag(value)).build());
        } else {//from  www  . j  av  a  2 s  .c  o  m
            LOG.warn("Lsp Attributes Subobject type {} not supported", type);
        }
        subObjectList.add(subObj.build());
    }

    return builder.setSubobjectContainer(subObjectList).build();
}