/* * Copyright 2017-present Open Networking Laboratory * * 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.driver.optical.flowrule; import org.apache.commons.lang3.tuple.Pair; import org.apache.felix.scr.annotations.Component; import org.apache.felix.scr.annotations.Service; import org.onosproject.net.flow.FlowId; import java.util.HashMap; import java.util.Map; /** * Simple implementation of a local flow rule cache that stores the flow ID and priority. * * Use this if you have a device that does not allow you to store these fields. * * WARNING: Be aware that this implementation makes no attempt to use a distributed store * for the cache, so do not rely on it to support fail-over in multi-instance deployments. * If the instance which holds the cache goes down, you *will* be in trouble. */ @Component(immediate = true, enabled = true) @Service public class DefaultCrossConnectCache implements CrossConnectCache { private final Map<Integer, Pair<FlowId, Integer>> cache = new HashMap<>(); @Override public Pair<FlowId, Integer> get(int hash) { return cache.get(hash); } @Override public void set(int hash, FlowId flowId, int priority) { cache.put(hash, Pair.of(flowId, priority)); } @Override public void remove(int hash) { cache.remove(hash); } }