mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-16 07:36:10 -04:00
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
// Copyright 2023 Google LLC
|
|
//
|
|
// 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
|
|
//
|
|
// https://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.
|
|
|
|
#ifndef THIRD_PARTY_NEARBY_INTERNAL_WEAVE_SOCKETS_INITIAL_DATA_PROVIDER_H_
|
|
#define THIRD_PARTY_NEARBY_INTERNAL_WEAVE_SOCKETS_INITIAL_DATA_PROVIDER_H_
|
|
|
|
#include <cmath>
|
|
#include <cstdint>
|
|
#include <string>
|
|
|
|
#include "absl/random/random.h"
|
|
#include "absl/strings/str_cat.h"
|
|
|
|
namespace nearby {
|
|
namespace weave {
|
|
|
|
class InitialDataProvider {
|
|
public:
|
|
virtual ~InitialDataProvider() = default;
|
|
virtual std::string Provide() { return ""; }
|
|
};
|
|
|
|
class RandomDataProvider : public InitialDataProvider {
|
|
public:
|
|
explicit RandomDataProvider(int number_of_bytes)
|
|
: number_of_bytes_(number_of_bytes) {}
|
|
std::string Provide() override {
|
|
uint64_t res = absl::uniform_int_distribution<uint64_t>(
|
|
1, pow(10, static_cast<double>(number_of_bytes_)))(prng_);
|
|
return absl::StrCat(res);
|
|
}
|
|
|
|
private:
|
|
int number_of_bytes_;
|
|
absl::BitGen prng_;
|
|
};
|
|
|
|
} // namespace weave
|
|
} // namespace nearby
|
|
|
|
#endif // THIRD_PARTY_NEARBY_INTERNAL_WEAVE_SOCKETS_INITIAL_DATA_PROVIDER_H_
|