// Copyright 2016 Google Inc.
//
// 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;

import "google/api/annotations.proto";
import "google/monitoring/v3/common.proto";
import "google/protobuf/timestamp.proto";

option java_multiple_files = true;
option java_outer_classname = "AgentProto";
option java_package = "com.google.monitoring.v3";


// A single data point from a `collectd`-based plugin.
message CollectdValue {
  // The type of measurement for the data source.
  enum DataSourceType {
    // An unspecified data source type.
    // This corresponds to [google.api.MetricDescriptor.MetricKind.METRIC_KIND_UNSPECIFIED].
    UNSPECIFIED_DATA_SOURCE_TYPE = 0;

    // An instantaneous measurement of a varying quantity.
    // This corresponds to [google.api.MetricDescriptor.MetricKind.GAUGE].
    GAUGE = 1;

    // A cumulative value over time.
    // This corresponds to [google.api.MetricDescriptor.MetricKind.CUMULATIVE].
    COUNTER = 2;

    // A rate of change of the measurement.
    DERIVE = 3;

    // An amount of change since the last measurement interval.
    // This corresponds to [google.api.MetricDescriptor.MetricKind.DELTA].
    ABSOLUTE = 4;
  }

  // The data source for the `collectd` value. For example there are
  // two data sources for network measurements: `"rx"` and `"tx"`.
  string data_source_name = 1;

  // The type of measurement.
  DataSourceType data_source_type = 2;

  // The measurement value.
  TypedValue value = 3;
}

// A collection of data points sent from a `collectd`-based plugin.
// See the `collectd` documentation for more information.
message CollectdPayload {
  // The measured values during this time interval.
  // Each value must have a different `dataSourceName`.
  repeated CollectdValue values = 1;

  // The start time of the interval.
  google.protobuf.Timestamp start_time = 2;

  // The end time of the interval.
  google.protobuf.Timestamp end_time = 3;

  // The name of the plugin. Example: `"disk"`.
  string plugin = 4;

  // The instance name of the plugin Example: `"hdcl"`.
  string plugin_instance = 5;

  // The measurement type. Example: `"memory"`.
  string type = 6;

  // The measurement type instance. Example: `"used"`.
  string type_instance = 7;

  // The measurement metadata. Example: `"process_id" -> 12345`
  map<string, TypedValue> metadata = 8;
}