Examples with PiExactFieldMatch org.onosproject.net.pi.runtime.PiExactFieldMatch used on opensource projects

Example 1 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch in project onos by opennetworkinglab.

the class CriterionJsonMatcher method matchCriterion.

/**
 * Matches a protocol-independent Type criterion object.
 *
 * @param criterion criterion to match
 * @return true if the JSON matches the criterion, false otherwise.
 */
private boolean matchCriterion(PiCriterion criterion) {
    Collection<PiFieldMatch> piFieldMatches = criterion.fieldMatches();
    JsonNode jsonMathes = jsonCriterion.get("matches");
    if (!jsonMathes.isArray()) {
        return false;
    }
    for (JsonNode matchNode : jsonMathes) {
        for (PiFieldMatch fieldMatch : piFieldMatches) {
            if (!Objects.equals(matchNode.get("field").textValue(), fieldMatch.fieldId().id())) {
                description.appendText("match field was " + fieldMatch.fieldId().id());
                return false;
            }
            if (!Objects.equals(matchNode.get("match").textValue(), fieldMatch.type().name().toLowerCase())) {
                description.appendText("match type was " + fieldMatch.type().name().toLowerCase());
                return false;
            }
            switch(fieldMatch.type()) {
                case EXACT:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiExactFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiExactFieldMatch) fieldMatch).value());
                        return false;
                    }
                    break;
                case LPM:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiLpmFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiLpmFieldMatch) fieldMatch).value());
                        return false;
                    }
                    if (!Objects.equals(matchNode.get("prefixLength").intValue(), ((PiLpmFieldMatch) fieldMatch).prefixLength())) {
                        description.appendText("match prefix was " + ((PiLpmFieldMatch) fieldMatch).prefixLength());
                        return false;
                    }
                    break;
                case TERNARY:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiTernaryFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiTernaryFieldMatch) fieldMatch).value());
                        return false;
                    }
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("mask").textValue(), null)), ((PiTernaryFieldMatch) fieldMatch).mask())) {
                        description.appendText("match mask was " + ((PiTernaryFieldMatch) fieldMatch).mask());
                        return false;
                    }
                    break;
                case RANGE:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("highValue").textValue(), null)), ((PiRangeFieldMatch) fieldMatch).highValue())) {
                        description.appendText("match high value was " + ((PiRangeFieldMatch) fieldMatch).highValue());
                        return false;
                    }
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("lowValue").textValue(), null)), ((PiRangeFieldMatch) fieldMatch).lowValue())) {
                        description.appendText("match low value was " + ((PiRangeFieldMatch) fieldMatch).lowValue());
                        return false;
                    }
                    break;
                case OPTIONAL:
                    if (!Objects.equals(copyFrom(HexString.fromHexString(matchNode.get("value").textValue(), null)), ((PiOptionalFieldMatch) fieldMatch).value())) {
                        description.appendText("match value was " + ((PiOptionalFieldMatch) fieldMatch).value());
                        return false;
                    }
                    break;
                default:
                    description.appendText("match type was " + fieldMatch.type().name().toLowerCase());
                    return false;
            }
        }
    }
    return true;
}

Example 2 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch in project onos by opennetworkinglab.

the class CriterionTranslatorHelper method translateCriterion.

/**
 * Translates a given criterion instance to a PiFieldMatch with the given id, match type, and bit-width.
 *
 * @param fieldId   PI match field identifier
 * @param criterion criterion
 * @param matchType match type
 * @param bitWidth  size of the field match in bits
 * @return a PI field match
 * @throws PiTranslationException if the criterion cannot be translated (see exception message)
 */
static PiFieldMatch translateCriterion(Criterion criterion, PiMatchFieldId fieldId, PiMatchType matchType, int bitWidth) throws PiTranslationException {
    if (!TRANSLATORS.containsKey(criterion.getClass())) {
        throw new PiTranslationException(format("Translation of criterion class %s is not implemented.", criterion.getClass().getSimpleName()));
    }
    try {
        final CriterionTranslator translator = TRANSLATORS.get(criterion.getClass()).newInstance();
        translator.init(criterion, bitWidth);
        switch(matchType) {
            case EXACT:
                return new PiExactFieldMatch(fieldId, translator.exactMatch());
            case OPTIONAL:
                return new PiOptionalFieldMatch(fieldId, translator.exactMatch());
            case TERNARY:
                final Pair<ImmutableByteSequence, ImmutableByteSequence> tp = translator.ternaryMatch();
                return new PiTernaryFieldMatch(fieldId, tp.getLeft(), tp.getRight());
            case LPM:
                final Pair<ImmutableByteSequence, Integer> lp = translator.lpmMatch();
                return new PiLpmFieldMatch(fieldId, lp.getLeft(), lp.getRight());
            default:
                throw new PiTranslationException(format("Translation of criterion %s (%s class) to match type %s is not implemented.", criterion.type().name(), criterion.getClass().getSimpleName(), matchType.name()));
        }
    } catch (ByteSequenceTrimException e) {
        throw new PiTranslationException(format("Size mismatch for criterion %s: %s", criterion.type(), e.getMessage()));
    } catch (CriterionTranslatorException e) {
        throw new PiTranslationException(format("Unable to translate criterion %s: %s", criterion.type(), e.getMessage()));
    } catch (InstantiationException | IllegalAccessException e) {
        // Was not able to instantiate the criterion translator.
        throw new IllegalStateException(e);
    }
}

Example 3 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch in project onos by opennetworkinglab.

the class PiCriterionTranslatorsTest method testIPv6NDLinkLayerAddressCriterion.

@Test
public void testIPv6NDLinkLayerAddressCriterion() throws Exception {
    MacAddress mac = MacAddress.valueOf(random.nextLong());
    int bitWidth = mac.toBytes().length * 8;
    IPv6NDLinkLayerAddressCriterion criterion = (IPv6NDLinkLayerAddressCriterion) Criteria.matchIPv6NDSourceLinkLayerAddress(mac);
    PiExactFieldMatch exactMatch = (PiExactFieldMatch) translateCriterion(criterion, fieldId, EXACT, bitWidth);
    assertThat(exactMatch.value().asArray(), is(criterion.mac().toBytes()));
}

Example 4 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch in project onos by opennetworkinglab.

the class PiCriterionTranslatorsTest method testMplsTcCriterion.

@Test
public void testMplsTcCriterion() throws Exception {
    byte[] mplsTc = new byte[1];
    random.nextBytes(mplsTc);
    int bitWidth = 16;
    MplsTcCriterion criterion = (MplsTcCriterion) Criteria.matchMplsTc(mplsTc[0]);
    PiExactFieldMatch exactMatch = (PiExactFieldMatch) translateCriterion(criterion, fieldId, EXACT, bitWidth);
    assertThat(exactMatch.value().asReadOnlyBuffer().get(1), is(criterion.tc()));
}

Example 5 with PiExactFieldMatch

use of org.onosproject.net.pi.runtime.PiExactFieldMatch in project onos by opennetworkinglab.

the class PiCriterionTranslatorsTest method testMplsBosCriterion.

@Test
public void testMplsBosCriterion() throws Exception {
    boolean mplsBos = random.nextBoolean();
    int bitWidth = 32;
    int bMplsBos = 0;
    MplsBosCriterion criterion = (MplsBosCriterion) Criteria.matchMplsBos(mplsBos);
    PiExactFieldMatch exactMatch = (PiExactFieldMatch) translateCriterion(criterion, fieldId, EXACT, bitWidth);
    bMplsBos = (criterion.mplsBos()) ? 1 : 0;
    assertThat(exactMatch.value().asReadOnlyBuffer().getInt(), is(bMplsBos));
}