Labelling repositories

Use labels to identify and group related repositories. You can specify multiple labels for a repository.

What are labels?

A label is a key-value pair that helps you organize your Google Cloud repositories. You can attach a label to each resource, then filter the resources based on their labels. Information about labels is forwarded to the billing system, so you can break down your billed charges by label.

Labels can be used as queryable annotations for resources, but can't be used to set conditions on policies. Tags provide a way to conditionally allow or deny policies based on whether a resource has a specific tag. For more information, see the Tags overview.

Common uses of labels

We do not recommend creating large numbers of unique labels, such as for timestamps or individual values for every API call. Here are some common use cases for labels:

  • Team or cost center labels: Add labels based on team or cost center to distinguish repositories owned by different teams (for example, team:research and team:analytics). You can use this type of label for cost accounting or budgeting.

  • Component labels: For example, component:redis, component:frontend, component:ingest, and component:dashboard.

  • Environment or stage labels: For example, environment:production and environment:test.

  • State labels: For example, state:active, state:readytodelete, and state:archive.

Requirements for labels

The labels applied to a resource must meet the following requirements:

  • Each resource can have multiple labels, up to a maximum of 64.
  • Each label must be a key-value pair.
  • Keys have a minimum length of 1 character and a maximum length of 63 characters, and cannot be empty. Values can be empty, and have a maximum length of 63 characters.
  • Keys and values can contain only lowercase letters, numeric characters, underscores, and dashes. All characters must use UTF-8 encoding, and international characters are allowed.
  • The key portion of a label must be unique. However, you can use the same key with multiple resources.
  • Keys must start with a lowercase letter or international character.

These limits apply to the key and value for each label, and to the individual Google Cloud resources that have labels. There is no limit on how many labels you can apply across all resources within a project.

Adding and updating labels

You can add one or more labels to a repository. You can also edit the value of an existing label.

To label a repository:

Console

  1. Open the Repositories page in the Cloud Console.

    Open the Repositories page

  2. Select a repository.

  3. If the info panel next to the repository list is not open, click Show Info Panel.

  4. In the info panel, click the Labels tab.

  5. Add or edit labels:

    1. To add a label, click Add Label. Specify the key and value pair for the label, then click Save.
    2. To edit an existing label, change the value for the label, then click Save.

gcloud

You can specify one or more labels to add or edit.

  • If a label exists, the corresponding value is updated.
  • If a label does not exist, the label is created.
  • If the command also includes the --clear-labels flag, all existing labels are removed before adding new labels.

Run the following command:

gcloud artifacts repositories update REPOSITORY [--project=PROJECT] \
[--location=LOCATION] --update-labels="KEY=VALUE,..."

Where

  • REPOSITORY is the name of the repository. If you configured a default repository, you can omit this flag to use the default.
  • PROJECT is the Google Cloud project ID. If this flag is omitted, the current or default project is used.
  • LOCATION is a regional or multi-regional location. Use this flag to view repositories in a specific location. If you configured a default location, you can omit this flag to use the default.
  • KEY=VALUE,... is a list of comma-separated labels specified as key-value pairs. For example: team=team-1,product=example_product,stage=development.

For more information about the command, run the following command:

gcloud artifacts repositories update --help

Filtering repositories by label

You can filter repository lists by label in Google Cloud Console or using gcloud command-line tool.

Console

  1. Open the Repositories page in the Cloud Console.

    Open the Repositories page

  2. In the Filter field, select Labels as the filter criteria and then enter your key, value, or key-value pair.

    For example, to show only repositories with the label env:dev, you can enter any of the following:

    • Enter the key: env
    • Enter the value: dev
    • Enter the key-value pair: env:dev

gcloud

To filter based on labels, use the --filter flag with the gcloud artifacts repositories list command.

The value of --filter flag must be in the labels.KEY=VALUE format. For example, if you wanted to filter repositories in the active project on a label with env as the key and dev as the value, you can run this command:

gcloud artifacts repositories list --filter labels.env=dev

For more information about the filter syntax in the gcloud tool, see the gcloud topic filters documentation.

Deleting labels

To delete labels:

Console

  1. Open the Repositories page in the Cloud Console.

    Open the Repositories page

  2. Click Select a repository.

  3. If the info panel next to the repository list is not open, click Show Info Panel.

  4. In the info panel, click the Labels tab.

  5. Click Delete Item next to the label that you want to remove.

gcloud

You can delete specific labels or remove all labels for a repository.

To remove specific labels, run the following command:

gcloud artifacts repositories update REPOSITORY [--project=PROJECT] \
[--location=LOCATION] --remove-labels="LABEL,..."

To remove all labels, run the following command:

gcloud artifacts repositories update REPOSITORY \
[--project=PROJECT] [--location=LOCATION] --clear-labels

Where

  • REPOSITORY is the name of the repository. If you configured a default repository, you can omit this flag to use the default.
  • PROJECT is the Google Cloud project ID. If this flag is omitted, the current or default project is used.
  • LOCATION is a regional or multi-regional location. Use this flag to view repositories in a specific location. If you configured a default location, you can omit this flag to use the default.
  • LABEL,... is a list of comma-separated labels, the keys from each KEY=VALUE pair. For example: team,product.

For more information about the command, run the following command:

   gcloud artifacts repositories update --help