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/*
* Copyright (c) 2022 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.
*/
#pragma once
#include <random>
#include <string>
namespace transport {
class TrafficGenerator {
public:
TrafficGenerator(uint32_t count);
virtual ~TrafficGenerator() = default;
bool hasFinished();
uint32_t getSentCount();
virtual std::pair<std::string, uint32_t> getPrefixAndSuffix();
virtual std::string getPrefix() = 0;
virtual uint32_t getSuffix() = 0;
virtual void reset();
protected:
void onSuffixGenerated();
uint32_t count_;
uint32_t sent_;
};
/* Fixed prefix, incremental suffix */
class IncrSuffixTrafficGenerator : public TrafficGenerator {
public:
explicit IncrSuffixTrafficGenerator(std::string prefix, uint32_t suffix,
uint32_t count);
std::string getPrefix() override;
uint32_t getSuffix() override;
void reset() override;
private:
std::string prefix_;
uint32_t suffix_;
uint32_t initial_suffix_;
};
/* Random prefix, random suffix */
class RandomTrafficGenerator : public TrafficGenerator {
public:
static constexpr char NET_PREFIX[] = "2001:db8:1::/64";
RandomTrafficGenerator(uint32_t count, std::string net_prefix = NET_PREFIX);
std::string getPrefix() override;
uint32_t getSuffix() override;
private:
std::string net_prefix_;
std::default_random_engine rand_engine_;
std::uniform_int_distribution<uint32_t> uniform_distribution_;
};
} // namespace transport
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