// Copyright 2017 Google Inc. All Rights Reserved.
//
// This file contains a proto definition for serialization of metrics data.
//
syntax = "proto2";

package drm_metrics;

// need this if we are using libprotobuf-cpp-2.3.0-lite
option optimize_for = LITE_RUNTIME;

// The MetricsGroup is a collection of metric name/value pair instances
// that can be serialized and provided to a caller.
message MetricsGroup {
  message Metric {
    message MetricValue {
      // Only one of the following values must be set. Note that the oneof
      // keyword is not supported in the protobuf version checked into the CDM.
      optional int64 int_value = 1;
      optional double double_value = 2;
      optional string string_value = 3;
    }

    // The name of the metric. Must be valid UTF-8. Required.
    optional string name = 1;

    // The value of the metric. Required.
    optional MetricValue value = 2;
  }

  // The list of name/value pairs of metrics.
  repeated Metric metric = 1;

  // Allow multiple sub groups of metrics.
  repeated MetricsGroup metric_sub_group = 2;

  // Name of the application package associated with the metrics.
  optional string app_package_name = 3;
}