| /* |
| * Copyright 2020-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.net.pi.runtime; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.base.Objects; |
| import org.onlab.util.ImmutableByteSequence; |
| import org.onosproject.net.pi.model.PiMatchFieldId; |
| import org.onosproject.net.pi.model.PiMatchType; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Instance of an optional field match in a protocol-independent pipeline. |
| * The optional match field behaves like an exact match if specified, otherwise |
| * it is logically equivalent to a wildcard match. |
| */ |
| @Beta |
| public final class PiOptionalFieldMatch extends PiFieldMatch { |
| |
| private final ImmutableByteSequence value; |
| |
| /** |
| * Creates an optional field match. |
| * |
| * @param fieldId field identifier |
| * @param value value |
| */ |
| public PiOptionalFieldMatch(PiMatchFieldId fieldId, ImmutableByteSequence value) { |
| super(fieldId); |
| this.value = checkNotNull(value); |
| checkArgument(value.size() > 0, "Value can't have size 0"); |
| } |
| |
| @Override |
| public PiMatchType type() { |
| return PiMatchType.OPTIONAL; |
| } |
| |
| /** |
| * Returns the byte sequence value to be matched. |
| * |
| * @return an immutable byte sequence |
| */ |
| public ImmutableByteSequence value() { |
| return value; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| PiOptionalFieldMatch that = (PiOptionalFieldMatch) o; |
| return Objects.equal(this.fieldId(), that.fieldId()) && |
| Objects.equal(value, that.value); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(this.fieldId(), value); |
| } |
| |
| @Override |
| public String toString() { |
| return this.fieldId().toString() + "=" + value.toString(); |
| } |
| } |