| // Copyright 2024 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.api; |
| |
| import "google/api/label.proto"; |
| import "google/api/launch_stage.proto"; |
| import "google/protobuf/duration.proto"; |
| |
| option go_package = "google.golang.org/genproto/googleapis/api/metric;metric"; |
| option java_multiple_files = true; |
| option java_outer_classname = "MetricProto"; |
| option java_package = "com.google.api"; |
| option objc_class_prefix = "GAPI"; |
| |
| // Defines a metric type and its schema. Once a metric descriptor is created, |
| // deleting or altering it stops data collection and makes the metric type's |
| // existing data unusable. |
| // |
| message MetricDescriptor { |
| // The kind of measurement. It describes how the data is reported. |
| // For information on setting the start time and end time based on |
| // the MetricKind, see [TimeInterval][google.monitoring.v3.TimeInterval]. |
| enum MetricKind { |
| // Do not use this default value. |
| METRIC_KIND_UNSPECIFIED = 0; |
| |
| // An instantaneous measurement of a value. |
| GAUGE = 1; |
| |
| // The change in a value during a time interval. |
| DELTA = 2; |
| |
| // A value accumulated over a time interval. Cumulative |
| // measurements in a time series should have the same start time |
| // and increasing end times, until an event resets the cumulative |
| // value to zero and sets a new start time for the following |
| // points. |
| CUMULATIVE = 3; |
| } |
| |
| // The value type of a metric. |
| enum ValueType { |
| // Do not use this default value. |
| VALUE_TYPE_UNSPECIFIED = 0; |
| |
| // The value is a boolean. |
| // This value type can be used only if the metric kind is `GAUGE`. |
| BOOL = 1; |
| |
| // The value is a signed 64-bit integer. |
| INT64 = 2; |
| |
| // The value is a double precision floating point number. |
| DOUBLE = 3; |
| |
| // The value is a text string. |
| // This value type can be used only if the metric kind is `GAUGE`. |
| STRING = 4; |
| |
| // The value is a [`Distribution`][google.api.Distribution]. |
| DISTRIBUTION = 5; |
| |
| // The value is money. |
| MONEY = 6; |
| } |
| |
| // Additional annotations that can be used to guide the usage of a metric. |
| message MetricDescriptorMetadata { |
| // Deprecated. Must use the |
| // [MetricDescriptor.launch_stage][google.api.MetricDescriptor.launch_stage] |
| // instead. |
| LaunchStage launch_stage = 1 [deprecated = true]; |
| |
| // The sampling period of metric data points. For metrics which are written |
| // periodically, consecutive data points are stored at this time interval, |
| // excluding data loss due to errors. Metrics with a higher granularity have |
| // a smaller sampling period. |
| google.protobuf.Duration sample_period = 2; |
| |
| // The delay of data points caused by ingestion. Data points older than this |
| // age are guaranteed to be ingested and available to be read, excluding |
| // data loss due to errors. |
| google.protobuf.Duration ingest_delay = 3; |
| } |
| |
| // The resource name of the metric descriptor. |
| string name = 1; |
| |
| // The metric type, including its DNS name prefix. The type is not |
| // URL-encoded. All user-defined metric types have the DNS name |
| // `custom.googleapis.com` or `external.googleapis.com`. Metric types should |
| // use a natural hierarchical grouping. For example: |
| // |
| // "custom.googleapis.com/invoice/paid/amount" |
| // "external.googleapis.com/prometheus/up" |
| // "appengine.googleapis.com/http/server/response_latencies" |
| string type = 8; |
| |
| // The set of labels that can be used to describe a specific |
| // instance of this metric type. For example, the |
| // `appengine.googleapis.com/http/server/response_latencies` metric |
| // type has a label for the HTTP response code, `response_code`, so |
| // you can look at latencies for successful responses or just |
| // for responses that failed. |
| repeated LabelDescriptor labels = 2; |
| |
| // Whether the metric records instantaneous values, changes to a value, etc. |
| // Some combinations of `metric_kind` and `value_type` might not be supported. |
| MetricKind metric_kind = 3; |
| |
| // Whether the measurement is an integer, a floating-point number, etc. |
| // Some combinations of `metric_kind` and `value_type` might not be supported. |
| ValueType value_type = 4; |
| |
| // The units in which the metric value is reported. It is only applicable |
| // if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The `unit` |
| // defines the representation of the stored metric values. |
| // |
| // Different systems might scale the values to be more easily displayed (so a |
| // value of `0.02kBy` _might_ be displayed as `20By`, and a value of |
| // `3523kBy` _might_ be displayed as `3.5MBy`). However, if the `unit` is |
| // `kBy`, then the value of the metric is always in thousands of bytes, no |
| // matter how it might be displayed. |
| // |
| // If you want a custom metric to record the exact number of CPU-seconds used |
| // by a job, you can create an `INT64 CUMULATIVE` metric whose `unit` is |
| // `s{CPU}` (or equivalently `1s{CPU}` or just `s`). If the job uses 12,005 |
| // CPU-seconds, then the value is written as `12005`. |
| // |
| // Alternatively, if you want a custom metric to record data in a more |
| // granular way, you can create a `DOUBLE CUMULATIVE` metric whose `unit` is |
| // `ks{CPU}`, and then write the value `12.005` (which is `12005/1000`), |
| // or use `Kis{CPU}` and write `11.723` (which is `12005/1024`). |
| // |
| // The supported units are a subset of [The Unified Code for Units of |
| // Measure](https://unitsofmeasure.org/ucum.html) standard: |
| // |
| // **Basic units (UNIT)** |
| // |
| // * `bit` bit |
| // * `By` byte |
| // * `s` second |
| // * `min` minute |
| // * `h` hour |
| // * `d` day |
| // * `1` dimensionless |
| // |
| // **Prefixes (PREFIX)** |
| // |
| // * `k` kilo (10^3) |
| // * `M` mega (10^6) |
| // * `G` giga (10^9) |
| // * `T` tera (10^12) |
| // * `P` peta (10^15) |
| // * `E` exa (10^18) |
| // * `Z` zetta (10^21) |
| // * `Y` yotta (10^24) |
| // |
| // * `m` milli (10^-3) |
| // * `u` micro (10^-6) |
| // * `n` nano (10^-9) |
| // * `p` pico (10^-12) |
| // * `f` femto (10^-15) |
| // * `a` atto (10^-18) |
| // * `z` zepto (10^-21) |
| // * `y` yocto (10^-24) |
| // |
| // * `Ki` kibi (2^10) |
| // * `Mi` mebi (2^20) |
| // * `Gi` gibi (2^30) |
| // * `Ti` tebi (2^40) |
| // * `Pi` pebi (2^50) |
| // |
| // **Grammar** |
| // |
| // The grammar also includes these connectors: |
| // |
| // * `/` division or ratio (as an infix operator). For examples, |
| // `kBy/{email}` or `MiBy/10ms` (although you should almost never |
| // have `/s` in a metric `unit`; rates should always be computed at |
| // query time from the underlying cumulative or delta value). |
| // * `.` multiplication or composition (as an infix operator). For |
| // examples, `GBy.d` or `k{watt}.h`. |
| // |
| // The grammar for a unit is as follows: |
| // |
| // Expression = Component { "." Component } { "/" Component } ; |
| // |
| // Component = ( [ PREFIX ] UNIT | "%" ) [ Annotation ] |
| // | Annotation |
| // | "1" |
| // ; |
| // |
| // Annotation = "{" NAME "}" ; |
| // |
| // Notes: |
| // |
| // * `Annotation` is just a comment if it follows a `UNIT`. If the annotation |
| // is used alone, then the unit is equivalent to `1`. For examples, |
| // `{request}/s == 1/s`, `By{transmitted}/s == By/s`. |
| // * `NAME` is a sequence of non-blank printable ASCII characters not |
| // containing `{` or `}`. |
| // * `1` represents a unitary [dimensionless |
| // unit](https://en.wikipedia.org/wiki/Dimensionless_quantity) of 1, such |
| // as in `1/s`. It is typically used when none of the basic units are |
| // appropriate. For example, "new users per day" can be represented as |
| // `1/d` or `{new-users}/d` (and a metric value `5` would mean "5 new |
| // users). Alternatively, "thousands of page views per day" would be |
| // represented as `1000/d` or `k1/d` or `k{page_views}/d` (and a metric |
| // value of `5.3` would mean "5300 page views per day"). |
| // * `%` represents dimensionless value of 1/100, and annotates values giving |
| // a percentage (so the metric values are typically in the range of 0..100, |
| // and a metric value `3` means "3 percent"). |
| // * `10^2.%` indicates a metric contains a ratio, typically in the range |
| // 0..1, that will be multiplied by 100 and displayed as a percentage |
| // (so a metric value `0.03` means "3 percent"). |
| string unit = 5; |
| |
| // A detailed description of the metric, which can be used in documentation. |
| string description = 6; |
| |
| // A concise name for the metric, which can be displayed in user interfaces. |
| // Use sentence case without an ending period, for example "Request count". |
| // This field is optional but it is recommended to be set for any metrics |
| // associated with user-visible concepts, such as Quota. |
| string display_name = 7; |
| |
| // Optional. Metadata which can be used to guide usage of the metric. |
| MetricDescriptorMetadata metadata = 10; |
| |
| // Optional. The launch stage of the metric definition. |
| LaunchStage launch_stage = 12; |
| |
| // Read-only. If present, then a [time |
| // series][google.monitoring.v3.TimeSeries], which is identified partially by |
| // a metric type and a |
| // [MonitoredResourceDescriptor][google.api.MonitoredResourceDescriptor], that |
| // is associated with this metric type can only be associated with one of the |
| // monitored resource types listed here. |
| repeated string monitored_resource_types = 13; |
| } |
| |
| // A specific metric, identified by specifying values for all of the |
| // labels of a [`MetricDescriptor`][google.api.MetricDescriptor]. |
| message Metric { |
| // An existing metric type, see |
| // [google.api.MetricDescriptor][google.api.MetricDescriptor]. For example, |
| // `custom.googleapis.com/invoice/paid/amount`. |
| string type = 3; |
| |
| // The set of label values that uniquely identify this metric. All |
| // labels listed in the `MetricDescriptor` must be assigned values. |
| map<string, string> labels = 2; |
| } |