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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/metrics/structured/lib/key_util.h"
#include <utility>
#include "base/check_op.h"
#include "base/unguessable_token.h"
namespace metrics::structured::util {
namespace {
constexpr std::string_view kKeyString = "key";
constexpr std::string_view kLastRotationString = "last_rotation";
constexpr std::string_view kRotationPeriodString = "rotation_period";
} // namespace
std::string GenerateNewKey() {
const std::string key = base::UnguessableToken::Create().ToString();
CHECK_EQ(key.size(), kKeySize);
return key;
}
base::Value CreateValueFromKeyProto(const KeyProto& proto) {
base::Value::Dict key =
base::Value::Dict()
.Set(kKeyString, proto.key())
// last_rotation and rotation_period are represented as int64's but
// should never exceed int.
.Set(kLastRotationString, static_cast<int>(proto.last_rotation()))
.Set(kRotationPeriodString,
static_cast<int>(proto.rotation_period()));
return base::Value(std::move(key));
}
std::optional<KeyProto> CreateKeyProtoFromValue(
const base::Value::Dict& value) {
const std::string* key = value.FindString(kKeyString);
if (!key) {
return std::nullopt;
}
std::optional<int> last_rotation = value.FindInt(kLastRotationString);
if (!last_rotation.has_value()) {
return std::nullopt;
}
std::optional<int> rotation_period = value.FindInt(kRotationPeriodString);
if (!rotation_period.has_value()) {
return std::nullopt;
}
KeyProto proto;
proto.set_key(*key);
proto.set_last_rotation(*last_rotation);
proto.set_rotation_period(*rotation_period);
return proto;
}
} // namespace metrics::structured::util
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