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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* 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.
*/
/**
* @file strategyImpl.h
* @brief Defines the function structure for a Strategy implementation
*
* <#Detailed Description#>
*
*/
/**
* A dispatch structure for a concrete implementation of a forwarding strategy.
*/
#ifndef strategyImpl_h
#define strategyImpl_h
#include <src/core/message.h>
#include <src/core/numberSet.h>
struct strategy_impl;
typedef struct strategy_impl StrategyImpl;
/**
* @typedef StrategyImpl
* @abstract Forwarding strategy implementation
* @constant receiveObject is called when we receive an object and have a
* measured round trip time. This allows a strategy to update its performance
* data.
* @constant lookupNexthop Find the set of nexthops to use for the Interest.
* May be empty, should not be NULL. Must be destroyed.
* @constant addNexthop Add a nexthop to the list of available nexthops with a
* routing protocol-specific cost.
* @constant destroy cleans up the strategy, freeing all memory and state. A
* strategy is reference counted, so the final destruction only happens after
* the last reference is released.
* @discussion <#Discussion#>
*/
struct strategy_impl {
void *context;
void (*receiveObject)(StrategyImpl *strategy, const NumberSet *egressId,
const Message *objectMessage, Ticks rtt);
void (*onTimeout)(StrategyImpl *strategy, const NumberSet *egressId);
NumberSet *(*lookupNexthop)(StrategyImpl *strategy,
const Message *interestMessage);
NumberSet *(*returnNexthops)(StrategyImpl *strategy);
unsigned (*countNexthops)(StrategyImpl *strategy);
void (*addNexthop)(StrategyImpl *strategy, unsigned connectionId);
void (*removeNexthop)(StrategyImpl *strategy, unsigned connectionId);
void (*destroy)(StrategyImpl **strategyPtr);
strategy_type (*getStrategy)(StrategyImpl *strategy);
};
#endif // strategyImpl_h
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