| /* |
| * Copyright 2017-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.pi.demo.app.ecmp; |
| |
| import com.google.common.collect.ImmutableBiMap; |
| import org.onosproject.drivers.p4runtime.DefaultP4Interpreter; |
| import org.onosproject.net.pi.runtime.PiTableId; |
| |
| import java.util.Optional; |
| |
| /** |
| * Implementation of a PiPipeline interpreter for the ecmp.json configuration. |
| */ |
| public class EcmpInterpreter extends DefaultP4Interpreter { |
| |
| protected static final String ECMP_METADATA_HEADER_NAME = "ecmp_metadata_t"; |
| protected static final String ECMP_GROUP_ACTION_NAME = "ecmp_group"; |
| protected static final String GROUP_ID = "group_id"; |
| protected static final String SELECTOR = "selector"; |
| protected static final String GROUP_SIZE = "groupSize"; |
| protected static final String ECMP_GROUP_TABLE = "ecmp_group_table"; |
| |
| private static final ImmutableBiMap<Integer, PiTableId> TABLE_MAP = new ImmutableBiMap.Builder<Integer, PiTableId>() |
| .put(0, PiTableId.of(TABLE0)) |
| .put(1, PiTableId.of(ECMP_GROUP_TABLE)) |
| .build(); |
| |
| @Override |
| public Optional<Integer> mapPiTableId(PiTableId piTableId) { |
| return Optional.ofNullable(TABLE_MAP.inverse().get(piTableId)); |
| } |
| |
| @Override |
| public Optional<PiTableId> mapFlowRuleTableId(int flowRuleTableId) { |
| return Optional.ofNullable(TABLE_MAP.get(flowRuleTableId)); |
| } |
| } |