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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
package ukm;
// Next tag: 6
message Entry {
// Unique identifier for an Event. This is used to provide hierarchical
// structure for Events.
optional int32 id = 1;
// Parent id, which is associated with an id for another Event. This is set
// only if the Event has another Event which can be considered a parent.
// This is to provide hierarchies for Events.
optional int32 parent_id = 2;
// The id of the Source this Event is associated with.
optional int64 source_id = 3;
// Type of the Event. This is a hash of the name (as a string).
optional fixed64 event_hash = 4;
// For each Event, we have a list of possible metrics included. It's possible
// for a single metric name to be repeated. There is also no guarentee that
// all metrics that are available for a given event will be provided for a
// single Entry.
message Metric {
optional fixed64 metric_hash = 1;
optional int64 value = 2;
repeated Metric metrics = 5;