CloudWatch sortie de flux métrique au format OpenTelemetry 1.0.0

OpenTelemetry est une collection d'outilsAPIs, etSDKs. Vous pouvez l'utiliser pour instrumenter, générer, collecter et exporter des données de télémétrie (métriques, journaux et traces) à des fins d'analyse. OpenTelemetry fait partie de la Cloud Native Computing Foundation. Pour plus d'informations, consultez OpenTelemetry.

Pour plus d'informations sur la spécification OpenTelemetry 1.0.0 complète, voir Release version 1.0.0.

Un enregistrement Kinesis peut contenir une ou plusieurs structures de ExportMetricsServiceRequest OpenTelemetry données. Chaque structure de données commence par un en-tête avec un UnsignedVarInt32 indiquant la longueur du registre en octets. Chaque ExportMetricsServiceRequest peut contenir des données provenant de plusieurs métriques à la fois.

Ce qui suit est une représentation sous forme de chaîne du message de la structure de ExportMetricsServiceRequest OpenTelemetry données. OpenTelemetry sérialise le protocole binaire Google Protocol Buffers, ce qui n'est pas lisible par l'homme.

resource_metrics {
  resource {
    attributes {
      key: "cloud.provider"
      value {
        string_value: "aws"
      }
    }
    attributes {
      key: "cloud.account.id"
      value {
        string_value: "123456789012"
      }
    }
    attributes {
      key: "cloud.region"
      value {
        string_value: "us-east-1"
      }
    }
    attributes {
      key: "aws.exporter.arn"
      value {
        string_value: "arn:aws:cloudwatch:us-east-1:123456789012:metric-stream/MyMetricStream"
      }
    }
  }
  scope_metrics {
    metrics {
      name: "amazonaws.com/AWS/DynamoDB/ConsumedReadCapacityUnits"
      unit: "NoneTranslated"
      summary {
        data_points {
          start_time_unix_nano: 60000000000
          time_unix_nano: 120000000000
          count: 1
          sum: 1.0
          quantile_values {
            value: 1.0
          }
          quantile_values {
            quantile: 0.95
            value: 1.0
          }
          quantile_values {
            quantile: 0.99
            value: 1.0
          }
          quantile_values {
            quantile: 1.0
            value: 1.0
          }
          attributes {
            key: "Namespace"
            value {
              string_value: "AWS/DynamoDB"
            }
          }
          attributes {
            key: "MetricName"
            value {
              string_value: "ConsumedReadCapacityUnits"
            }
          }
          attributes {
            key: "Dimensions"
            value {
              kvlist_value {
                values {
                  key: "TableName"
                  value {
                    string_value: "MyTable"
                  }
                }
              }
            }
          }
        }
        data_points {
          start_time_unix_nano: 70000000000
          time_unix_nano: 130000000000
          count: 2
          sum: 5.0
          quantile_values {
            value: 2.0
          }
          quantile_values {
            quantile: 1.0
            value: 3.0
          }
          attributes {
            key: "Namespace"
            value {
              string_value: "AWS/DynamoDB"
            }
          }
          attributes {
            key: "MetricName"
            value {
              string_value: "ConsumedReadCapacityUnits"
            }
          }
          attributes {
            key: "Dimensions"
            value {
              kvlist_value {
                values {
                  key: "TableName"
                  value {
                    string_value: "MyTable"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

Objet de haut niveau pour sérialiser les données métriques OpenTelemetry

ExportMetricsServiceRequestest le wrapper de haut niveau pour sérialiser la charge utile d'un OpenTelemetry exportateur. Il contient une ou plusieurs ResourceMetrics.

message ExportMetricsServiceRequest {
  // An array of ResourceMetrics.
  // For data coming from a single resource this array will typically contain one
  // element. Intermediary nodes (such as OpenTelemetry Collector) that receive
  // data from multiple origins typically batch the data before forwarding further and
  // in that case this array will contain multiple elements.
  repeated opentelemetry.proto.metrics.v1.ResourceMetrics resource_metrics = 1;
}

ResourceMetricsest l'objet de niveau supérieur pour représenter les MetricData objets.

// A collection of ScopeMetrics from a Resource.
message ResourceMetrics {
  reserved 1000;

  // The resource for the metrics in this message.
  // If this field is not set then no resource info is known.
  opentelemetry.proto.resource.v1.Resource resource = 1;

  // A list of metrics that originate from a resource.
  repeated ScopeMetrics scope_metrics = 2;

  // This schema_url applies to the data in the "resource" field. It does not apply
  // to the data in the "scope_metrics" field which have their own schema_url field.
  string schema_url = 3;
}

L'objet Ressource

Resource est un objet de paire de valeurs qui contient des informations sur la ressource qui a généré les métriques. Pour les métriques créées par AWS, la structure de données contient le nom de ressource Amazon (ARN) de la ressource associée à la métrique, telle qu'une EC2 instance ou un compartiment S3.

L'objet Resource contient un attribut appelé attributes, qui stocke une liste des paires de valeurs clés.

// Resource information.
message Resource {
  // Set of attributes that describe the resource.
  // Attribute keys MUST be unique (it is not allowed to have more than one
  // attribute with the same key).
  repeated opentelemetry.proto.common.v1.KeyValue attributes = 1;

  // dropped_attributes_count is the number of dropped attributes. If the value is 0, then
  // no attributes were dropped.
  uint32 dropped_attributes_count = 2;
}

L' ScopeMetrics objet

Le champ scope ne sera pas rempli. Seul le champ des métriques que nous exportons est renseigné.

// A collection of Metrics produced by an Scope.
message ScopeMetrics {
  // The instrumentation scope information for the metrics in this message.
  // Semantically when InstrumentationScope isn't set, it is equivalent with
  // an empty instrumentation scope name (unknown).
  opentelemetry.proto.common.v1.InstrumentationScope scope = 1;

  // A list of metrics that originate from an instrumentation library.
  repeated Metric metrics = 2;

  // This schema_url applies to all metrics in the "metrics" field.
  string schema_url = 3;
}

L'objet Metric

L’objet de métrique contient quelques métadonnées et un champ de données Summary qui contient une liste de SummaryDataPoint.

Pour les flux de métriques, les métadonnées sont les suivantes :

message Metric {
  reserved 4, 6, 8;

  // name of the metric, including its DNS name prefix. It must be unique.
  string name = 1;

  // description of the metric, which can be used in documentation.
  string description = 2;

  // unit in which the metric value is reported. Follows the format
  // described by http://unitsofmeasure.org/ucum.html.
  string unit = 3;

  // Data determines the aggregation type (if any) of the metric, what is the
  // reported value type for the data points, as well as the relatationship to
  // the time interval over which they are reported.
  oneof data {
    Gauge gauge = 5;
    Sum sum = 7;
    Histogram histogram = 9;
    ExponentialHistogram exponential_histogram = 10;
    Summary summary = 11;
  }
}

message Summary {
  repeated SummaryDataPoint data_points = 1;
}

L' SummaryDataPoint objet

L' SummaryDataPoint objet contient la valeur d'un point de données unique dans une série chronologique dans une DoubleSummary métrique.

// SummaryDataPoint is a single data point in a timeseries that describes the
// time-varying values of a Summary metric.
message SummaryDataPoint {
  reserved 1;

  // The set of key/value pairs that uniquely identify the timeseries from
  // where this point belongs. The list may be empty (may contain 0 elements).
  // Attribute keys MUST be unique (it is not allowed to have more than one
  // attribute with the same key).
  repeated opentelemetry.proto.common.v1.KeyValue attributes = 7;

  // StartTimeUnixNano is optional but strongly encouraged, see the
  // the detailed comments above Metric.
  //
  // Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January
  // 1970.
  fixed64 start_time_unix_nano = 2;

  // TimeUnixNano is required, see the detailed comments above Metric.
  //
  // Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January
  // 1970.
  fixed64 time_unix_nano = 3;

  // count is the number of values in the population. Must be non-negative.
  fixed64 count = 4;

  // sum of the values in the population. If count is zero then this field
  // must be zero.
  //
  // Note: Sum should only be filled out when measuring non-negative discrete
  // events, and is assumed to be monotonic over the values of these events.
  // Negative events *can* be recorded, but sum should not be filled out when
  // doing so.  This is specifically to enforce compatibility w/ OpenMetrics,
  // see: https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md#summary
  double sum = 5;

  // Represents the value at a given quantile of a distribution.
  //
  // To record Min and Max values following conventions are used:
  // - The 1.0 quantile is equivalent to the maximum value observed.
  // - The 0.0 quantile is equivalent to the minimum value observed.
  //
  // See the following issue for more context:
  // https://github.com/open-telemetry/opentelemetry-proto/issues/125
  message ValueAtQuantile {
    // The quantile of a distribution. Must be in the interval
    // [0.0, 1.0].
    double quantile = 1;

    // The value at the given quantile of a distribution.
    //
    // Quantile values must NOT be negative.
    double value = 2;
  }

  // (Optional) list of values at different quantiles of the distribution calculated
  // from the current snapshot. The quantiles must be strictly increasing.
  repeated ValueAtQuantile quantile_values = 6;

  // Flags that apply to this specific data point.  See DataPointFlags
  // for the available flags and their meaning.
  uint32 flags = 8;
}

Pour de plus amples informations, veuillez consulter Traductions au format OpenTelemetry 1.0.0 en CloudWatch.