Examples with ImmutableByteSequence org.onlab.util.ImmutableByteSequence used on opensource projects

Example 16 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class FieldMatchCodec method decode.

@Override
public PiFieldMatch decode(P4RuntimeOuterClass.FieldMatch message, P4InfoOuterClass.Preamble tablePreamble, PiPipeconf pipeconf, P4InfoBrowser browser) throws CodecException, P4InfoBrowser.NotFoundException {
    final P4InfoOuterClass.MatchField matchField = browser.matchFields(tablePreamble.getId()).getById(message.getFieldId());
    final int fieldBitwidth = matchField.getBitwidth();
    final PiMatchFieldId headerFieldId = PiMatchFieldId.of(matchField.getName());
    final boolean isSdnString = browser.isTypeString(matchField.getTypeName());
    final P4RuntimeOuterClass.FieldMatch.FieldMatchTypeCase typeCase = message.getFieldMatchTypeCase();
    try {
        switch(typeCase) {
            case EXACT:
                P4RuntimeOuterClass.FieldMatch.Exact exactFieldMatch = message.getExact();
                final ImmutableByteSequence exactValue;
                if (isSdnString) {
                    exactValue = copyFrom(new String(exactFieldMatch.getValue().toByteArray()));
                } else {
                    exactValue = copyAndFit(exactFieldMatch.getValue().asReadOnlyByteBuffer(), fieldBitwidth);
                }
                return new PiExactFieldMatch(headerFieldId, exactValue);
            case TERNARY:
                P4RuntimeOuterClass.FieldMatch.Ternary ternaryFieldMatch = message.getTernary();
                ImmutableByteSequence ternaryValue = copyAndFit(ternaryFieldMatch.getValue().asReadOnlyByteBuffer(), fieldBitwidth);
                ImmutableByteSequence ternaryMask = copyAndFit(ternaryFieldMatch.getMask().asReadOnlyByteBuffer(), fieldBitwidth);
                return new PiTernaryFieldMatch(headerFieldId, ternaryValue, ternaryMask);
            case LPM:
                P4RuntimeOuterClass.FieldMatch.LPM lpmFieldMatch = message.getLpm();
                ImmutableByteSequence lpmValue = copyAndFit(lpmFieldMatch.getValue().asReadOnlyByteBuffer(), fieldBitwidth);
                int lpmPrefixLen = lpmFieldMatch.getPrefixLen();
                return new PiLpmFieldMatch(headerFieldId, lpmValue, lpmPrefixLen);
            case RANGE:
                P4RuntimeOuterClass.FieldMatch.Range rangeFieldMatch = message.getRange();
                ImmutableByteSequence rangeHighValue = copyAndFit(rangeFieldMatch.getHigh().asReadOnlyByteBuffer(), fieldBitwidth);
                ImmutableByteSequence rangeLowValue = copyAndFit(rangeFieldMatch.getLow().asReadOnlyByteBuffer(), fieldBitwidth);
                return new PiRangeFieldMatch(headerFieldId, rangeLowValue, rangeHighValue);
            case OPTIONAL:
                P4RuntimeOuterClass.FieldMatch.Optional optionalFieldMatch = message.getOptional();
                final ImmutableByteSequence optionalValue;
                if (isSdnString) {
                    optionalValue = copyFrom(new String(optionalFieldMatch.getValue().toByteArray()));
                } else {
                    optionalValue = copyAndFit(optionalFieldMatch.getValue().asReadOnlyByteBuffer(), fieldBitwidth);
                }
                return new PiOptionalFieldMatch(headerFieldId, optionalValue);
            default:
                throw new CodecException(format("Decoding of field match type '%s' not implemented", typeCase.name()));
        }
    } catch (ImmutableByteSequence.ByteSequenceTrimException e) {
        throw new CodecException(e.getMessage());
    }
}

Example 17 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class P4DataCodec method encodeHeader.

private static P4Header encodeHeader(PiHeader piHeader) {
    P4Header.Builder builder = P4Header.newBuilder();
    int i = 0;
    for (ImmutableByteSequence bitString : piHeader.bitStrings()) {
        builder.setBitstrings(i, ByteString.copyFrom(bitString.asArray()));
        i++;
    }
    return builder.setIsValid(piHeader.isValid()).build();
}

Example 18 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class ActionCodec method decode.

@Override
protected PiAction decode(P4RuntimeOuterClass.Action message, Object ignored, PiPipeconf pipeconf, P4InfoBrowser browser) throws P4InfoBrowser.NotFoundException, CodecException {
    final P4InfoBrowser.EntityBrowser<P4InfoOuterClass.Action.Param> paramInfo = browser.actionParams(message.getActionId());
    final String actionName = browser.actions().getById(message.getActionId()).getPreamble().getName();
    final PiAction.Builder builder = PiAction.builder().withId(PiActionId.of(actionName));
    for (P4RuntimeOuterClass.Action.Param p : message.getParamsList()) {
        final P4InfoOuterClass.Action.Param actionParam = paramInfo.getById(p.getParamId());
        final ImmutableByteSequence value;
        if (browser.isTypeString(actionParam.getTypeName())) {
            value = copyFrom(new String(p.getValue().toByteArray()));
        } else {
            try {
                value = copyAndFit(p.getValue().asReadOnlyByteBuffer(), actionParam.getBitwidth());
            } catch (ImmutableByteSequence.ByteSequenceTrimException e) {
                throw new CodecException(e.getMessage());
            }
        }
        builder.withParameter(new PiActionParam(PiActionParamId.of(actionParam.getName()), value));
    }
    return builder.build();
}

Example 19 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project onos by opennetworkinglab.

the class PiCriterionTranslatorsTest method testLpmToTernaryTranslation.

@Test
public void testLpmToTernaryTranslation() throws Exception {
    IpPrefix ipPrefix = IpPrefix.valueOf("10.0.0.1/23");
    int bitWidth = ipPrefix.address().toOctets().length * Byte.SIZE;
    IPCriterion criterion = (IPCriterion) Criteria.matchIPDst(ipPrefix);
    PiTernaryFieldMatch ternaryMatch = (PiTernaryFieldMatch) translateCriterion(criterion, fieldId, TERNARY, bitWidth);
    ImmutableByteSequence expectedMask = ImmutableByteSequence.prefixOnes(Integer.BYTES, 23);
    ImmutableByteSequence expectedValue = ImmutableByteSequence.copyFrom(ipPrefix.address().toOctets());
    assertThat(ternaryMatch.mask(), is(expectedMask));
    assertThat(ternaryMatch.value(), is(expectedValue));
}

Example 20 with ImmutableByteSequence

use of org.onlab.util.ImmutableByteSequence in project TFG by mattinelorza.

the class InterpreterImpl method mapInboundPacket.

/**
 * Returns an ONS InboundPacket equivalent to the given pipeconf-specific
 * packet-in operation.
 *
 * @param packetIn packet operation
 * @param deviceId ID of the device that originated the packet-in
 * @return inbound packet
 * @throws PiInterpreterException if the packet operation cannot be mapped
 *                                to an inbound packet
 */
@Override
public InboundPacket mapInboundPacket(PiPacketOperation packetIn, DeviceId deviceId) throws PiInterpreterException {
    // Find the ingress_port metadata.
    // *** TODO EXERCISE 4: modify metadata names to match P4Info
    // ---- START SOLUTION ----
    final String inportMetadataName = "ADD HERE METADATA NAME FOR THE INGRESS PORT";
    // ---- END SOLUTION ----
    Optional<PiPacketMetadata> inportMetadata = packetIn.metadatas().stream().filter(meta -> meta.id().id().equals(inportMetadataName)).findFirst();
    if (!inportMetadata.isPresent()) {
        throw new PiInterpreterException(format("Missing metadata '%s' in packet-in received from '%s': %s", inportMetadataName, deviceId, packetIn));
    }
    // Build ONOS InboundPacket instance with the given ingress port.
    // 1. Parse packet-in object into Ethernet packet instance.
    final byte[] payloadBytes = packetIn.data().asArray();
    final ByteBuffer rawData = ByteBuffer.wrap(payloadBytes);
    final Ethernet ethPkt;
    try {
        ethPkt = Ethernet.deserializer().deserialize(payloadBytes, 0, packetIn.data().size());
    } catch (DeserializationException dex) {
        throw new PiInterpreterException(dex.getMessage());
    }
    // 2. Get ingress port
    final ImmutableByteSequence portBytes = inportMetadata.get().value();
    final short portNum = portBytes.asReadOnlyBuffer().getShort();
    final ConnectPoint receivedFrom = new ConnectPoint(deviceId, PortNumber.portNumber(portNum));
    return new DefaultInboundPacket(receivedFrom, ethPkt, rawData);
}