93 lines
4.3 KiB
Markdown
93 lines
4.3 KiB
Markdown
---
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stage: Growth
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group: Product Intelligence
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Metrics Dictionary Guide
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This guide describes Metrics Dictionary and how it's implemented
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## Metrics Definition and validation
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We are using [JSON Schema](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/schema.json) to validate the metrics definition.
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This process is meant to ensure consistent and valid metrics defined for Usage Ping. All metrics *must*:
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- Comply with the defined [JSON schema](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/schema.json).
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- Have a unique `key_path` .
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- Have an owner.
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All metrics are stored in YAML files:
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- [`config/metrics`](https://gitlab.com/gitlab-org/gitlab/-/tree/master/config/metrics)
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Each metric is defined in a separate YAML file consisting of a number of fields:
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| Field | Required | Additional information |
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|---------------------|----------|----------------------------------------------------------------|
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| `key_path` | yes | JSON key path for the metric, location in Usage Ping payload. |
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| `description` | yes | |
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| `value_type` | yes | |
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| `status` | yes | |
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| `product_group` | yes | The [group](https://about.gitlab.com/handbook/product/categories/#devops-stages) that owns the metric. |
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| `time_frame` | yes | `string`; may be set to a value like "7d" |
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| `data_source` | yes | `string`: may be set to a value like `database` or `redis_hll`. |
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| `distribution` | yes | The [distribution](https://about.gitlab.com/handbook/marketing/strategic-marketing/tiers/#definitions) where the metric applies. |
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| `tier` | yes | The [tier]( https://about.gitlab.com/handbook/marketing/strategic-marketing/tiers/) where the metric applies. |
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| `product_category` | no | The [product category](https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/categories.yml) for the metric. |
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| `product_stage` | no | The [stage](https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/stages.yml) for the metric. |
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| `milestone` | no | The milestone when the metric is introduced. |
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| `milestone_removed` | no | The milestone when the metric is removed. |
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| `introduced_by_url` | no | The URL to the Merge Request that introduced the metric. |
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### Example metric definition
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The linked [`uuid`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/metrics/license/uuid.yml)
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YAML file includes an example metric definition, where the `uuid` metric is the GitLab
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instance unique identifier.
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```yaml
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key_path: uuid
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description: GitLab instance unique identifier
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value_type: string
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product_category: collection
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product_stage: growth
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status: data_available
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milestone: 9.1
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introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/1521
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product_group: group::product intelligence
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time_frame: none
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data_source: database
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distribution:
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- ee
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- ce
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tier:
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- free
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- premium
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- ultimate
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```
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## Create a new metric definition
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The GitLab codebase provides a dedicated [generator](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/generators/gitlab/usage_metric_definition_generator.rb) to create new metric definitions.
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For uniqueness, the generated file includes a timestamp prefix, in ISO 8601 format.
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The generator takes the key path argument and 2 options and creates the metric YAML definition in corresponding location:
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- `--ee`, `--no-ee` Indicates if metric is for EE.
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- `--dir=DIR` indicates the metric directory. It must be one of: `counts_7d`, `7d`, `counts_28d`, `28d`, `counts_all`, `all`, `settings`, `license`.
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```shell
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bundle exec rails generate gitlab:usage_metric_definition counts.issues --dir=7d
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create config/metrics/counts_7d/issues.yml
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```
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NOTE:
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To create a metric definition used in EE, add the `--ee` flag.
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```shell
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bundle exec rails generate gitlab:usage_metric_definition counts.issues --ee --dir=7d
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create ee/config/metrics/counts_7d/issues.yml
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```
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