// Copyright 2019 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
//
//     http://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.
//

syntax = "proto3";

package google.monitoring.v3;

option csharp_namespace = "Google.Cloud.Monitoring.V3";
option go_package = "google.golang.org/genproto/googleapis/monitoring/v3;monitoring";
option php_namespace = "Google\\Cloud\\Monitoring\\V3";
option java_multiple_files = true;
option java_outer_classname = "DroppedLabelsProto";
option java_package = "com.google.monitoring.v3";

// A set of (label, value) pairs which were dropped during aggregation, attached
// to google.api.Distribution.Exemplars in google.api.Distribution values during
// aggregation.
//
// These values are used in combination with the label values that remain on the
// aggregated Distribution timeseries to construct the full label set for the
// exemplar values.  The resulting full label set may be used to identify the
// specific task/job/instance (for example) which may be contributing to a
// long-tail, while allowing the storage savings of only storing aggregated
// distribution values for a large group.
//
// Note that there are no guarantees on ordering of the labels from
// exemplar-to-exemplar and from distribution-to-distribution in the same
// stream, and there may be duplicates.  It is up to clients to resolve any
// ambiguities.
message DroppedLabels {
  // Map from label to its value, for all labels dropped in any aggregation.
  map<string, string> label = 1;
}