File: key.proto

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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.

syntax = "proto2";

package metrics.structured;

option optimize_for = LITE_RUNTIME;

// These protos are used for storing key information for structured metrics. All
// changes should be backwards-compatible. This file is manually synced between
// chromium and platform2. Any changes should first be made to chromium and then
// copied to platform2.
//
// chromium path: components/metrics/structured/lib/proto/key.proto
// platform2 path: metrics/structured/proto/storage.proto

// All information about the key for a single project.
message KeyProto {
  // The key itself.
  optional string key = 1;

  // When the key was last rotated, in days since the unix epoch.
  optional int64 last_rotation = 2;

  // The maximum number of days between rotations.
  optional int64 rotation_period = 3;
}

// Stores keys for all projects.
message KeyDataProto {
  // Maps the first 8 bytes of the MD5 hash of the project name to that
  // project's key.
  map<fixed64, KeyProto> keys = 1;
}