GitLab

Site admins can sync Git repositories hosted on GitLab (GitLab.com and GitLab CE/EE) with Sourcegraph so that users can search and navigate the repositories.

To set this up, add GitLab as an external service to Sourcegraph:

  1. Go to User menu > Site admin.
  2. Open the External services page.
  3. Press + Add external service.
  4. Enter a Display name (using “GitLab” is OK if you only have one GitLab instance).
  5. In the Kind menu, select GitLab.
  6. Configure the connection to GitLab in the JSON editor. Use Cmd/Ctrl+Space for completion, and see configuration documentation below.
  7. Press Add external service.

Supported versions

  • GitLab.com
  • GitLab CE/EE (v10.0 and newer)

Repository syncing

There are three fields for configuring which projects are mirrored/synchronized:

  • projects
    A list of projects in {"name": "group/name"} or {"id": id} format.
  • projectQuery
    A list of strings with one pre-defined option (none), and/or an URL path and query that targets a GitLab API endpoint returning a list of projects.
  • exclude
    A list of projects to exclude which takes precedence over the projects, and projectQuery fields. It has the same format as projects.

Troubleshooting

You can test your access token’s permissions by running a cURL command against the GitLab API. This is the same API and the same project list used by Sourcegraph.

Replace $ACCESS_TOKEN with the access token you are providing to Sourcegraph, and $GITLAB_HOSTNAME with your GitLab hostname:

curl -H 'Private-Token: $ACCESS_TOKEN' -XGET 'https://$GITLAB_HOSTNAME/api/v4/projects'

Repository permissions

By default, all Sourcegraph users can view all repositories. To configure Sourcegraph to use GitLab’s per-user repository permissions, see “Repository permissions”.

User authentication

To configure GitLab as an authentication provider (which will enable sign-in via GitLab), see the authentication documentation.

Configuration

admin/external_service/gitlab.schema.json

{
	// If non-null, enforces GitLab repository permissions. This requires that there be an item in the `auth.providers` field of type "gitlab" with the same `url` field as specified in this `GitLabConnection`.
	"authorization": null,

	// TLS certificate of the GitLab instance. This is only necessary if the certificate is self-signed or signed by an internal CA. To get the certificate run `openssl s_client -connect HOST:443 -showcerts < /dev/null 2> /dev/null | openssl x509 -outform PEM`
	"certificate": null,
	// Other example values:
	// - "-----BEGIN CERTIFICATE-----\n..."

	// A list of projects to never mirror from this GitLab instance. Takes precedence over "projects" and "projectQuery" configuration. Supports excluding by name ({"name": "group/name"}) or by ID ({"id": 42}).
	"exclude": null,
	// Other example values:
	// - [
	//     {
	//       "name": "group/name"
	//     },
	//     {
	//       "id": 42
	//     }
	//   ]
	// - [
	//     {
	//       "name": "gitlab-org/gitlab-ee"
	//     },
	//     {
	//       "name": "gitlab-com/www-gitlab-com"
	//     }
	//   ]

	// The type of Git URLs to use for cloning and fetching Git repositories on this GitLab instance.
	//
	// If "http", Sourcegraph will access GitLab repositories using Git URLs of the form http(s)://gitlab.example.com/myteam/myproject.git (using https: if the GitLab instance uses HTTPS).
	//
	// If "ssh", Sourcegraph will access GitLab repositories using Git URLs of the form [email protected]:myteam/myproject.git. See the documentation for how to provide SSH private keys and known_hosts: https://docs.sourcegraph.com/admin/repo/auth#repositories-that-need-http-s-or-ssh-authentication.
	"gitURLType": "http",

	// Defines whether repositories from this GitLab instance should be enabled and cloned when they are first seen by Sourcegraph. If false, the site admin must explicitly enable GitLab repositories (in the site admin area) to clone them and make them searchable on Sourcegraph. If true, they will be enabled and cloned immediately (subject to rate limiting by GitLab); site admins can still disable them explicitly, and they'll remain disabled.
	"initialRepositoryEnablement": null,

	// An array of transformations will apply to the repository name. Currently, only regex replacement is supported. All transformations happen after "repositoryPathPattern" is processed.
	"nameTransformations": null,
	// Other example values:
	// - [
	//     {
	//       "regex": "\\.d/",
	//       "replacement": "/"
	//     },
	//     {
	//       "regex": "-git$",
	//       "replacement": ""
	//     }
	//   ]

	// An array of strings specifying which GitLab projects to mirror on Sourcegraph. Each string is a URL path and query that targets a GitLab API endpoint returning a list of projects. If the string only contains a query, then "projects" is used as the path. Examples: "?membership=true&search=foo", "groups/mygroup/projects".
	//
	// The special string "none" can be used as the only element to disable this feature. Projects matched by multiple query strings are only imported once. Here are a few endpoints that return a list of projects: https://docs.gitlab.com/ee/api/projects.html#list-all-projects, https://docs.gitlab.com/ee/api/groups.html#list-a-groups-projects, https://docs.gitlab.com/ee/api/search.html#scope-projects.
	"projectQuery": [
		"none"
	],
	// Other example values:
	// - [
	//     "?membership=true\u0026search=foo",
	//     "groups/mygroup/projects"
	//   ]

	// A list of projects to mirror from this GitLab instance. Supports including by name ({"name": "group/name"}) or by ID ({"id": 42}).
	"projects": null,
	// Other example values:
	// - [
	//     {
	//       "name": "group/name"
	//     },
	//     {
	//       "id": 42
	//     }
	//   ]
	// - [
	//     {
	//       "name": "gnachman/iterm2"
	//     },
	//     {
	//       "name": "gitlab-org/gitlab-ce"
	//     }
	//   ]

	// The pattern used to generate a the corresponding Sourcegraph repository name for a GitLab project. In the pattern, the variable "{host}" is replaced with the GitLab URL's host (such as gitlab.example.com), and "{pathWithNamespace}" is replaced with the GitLab project's "namespace/path" (such as "myteam/myproject").
	//
	// For example, if your GitLab is https://gitlab.example.com and your Sourcegraph is https://src.example.com, then a repositoryPathPattern of "{host}/{pathWithNamespace}" would mean that a GitLab project at https://gitlab.example.com/myteam/myproject is available on Sourcegraph at https://src.example.com/gitlab.example.com/myteam/myproject.
	//
	// It is important that the Sourcegraph repository name generated with this pattern be unique to this code host. If different code hosts generate repository names that collide, Sourcegraph's behavior is undefined.
	"repositoryPathPattern": "{host}/{pathWithNamespace}",

	// A GitLab access token with "api" and "sudo" scopes. If this token does not have "sudo" scope, then you must set `permissions.ignore` to true.
	"token": null,

	// URL of a GitLab instance, such as https://gitlab.example.com or (for GitLab.com) https://gitlab.com.
	"url": null
	// Other example values:
	// - "https://gitlab.com"
	// - "https://gitlab.example.com"
}