Usage

application: application_name {
  label: "Application Label"
  url: "application_url"
  file: "application_file_path"
  sri_hash: "SRI_hash_value"
  entitlements: {
    local_storage: yes | no
    navigation: yes | no
    new_window: yes | no
    new_window_external_urls: ["url1", "url2", …]
    use_form_submit: yes | no
    use_embeds: yes | no
    use_downloads: yes | no
    use_iframes: yes | no
    use_clipboard: yes | no
    core_api_methods: ["api_method1", "api_method2", …]
    external_api_urls: ["api_url1", "api_url2", …]
    oauth2_urls: ["oauth2_url1", "oauth2_url2", …]
    global_user_attributes: ["user_attribute1", "user_attribute2", …]
    scoped_user_attributes: ["user_attribute1", "user_attribute2", …]
  }
}

Hierarchy

Manifest File

application

Default Value

None

Accepts

A name for the application and subparameters to define it

Special Rules

The application must have a url or a file parameter, but not both

Definition

The application parameter defines an application for Looker’s extension framework. Once an extension is added to a project, Looker users with appropriate permissions can see the extension listed in the Looker Browse menu. When a user selects the extension from the Browse menu, the application will open inside Looker.

If your admin has enabled the Enhanced Navigation Labs feature, extensions are listed in the Applications section of the new enhanced left navigation panel.

The application parameter has the following subparameters:

label
url
file
entitlements

The application must have either a url parameter or a file parameter, but not both.

`label`

Specifies the name of the application that is displayed to the user in the Browse menu. The label can be localized, if you are localizing your LookML model.

`url`

The url parameter is used for development purposes only, and should point to a development server running on the developer’s machine. For example:

url: "http://localhost:8080/bundle.js"

After development, you can drag the file into the Looker IDE and then use the file parameter to point to the file.

`file`

Specifies the path to a JavaScript file (with a .js extension) that defines the application. The path is relative to the project root. For example, this file parameter points to the bundle.js file in the apps directory of the LookML project:

file: "apps/bundle.js"

`sri_hash`

Specifies a Subresource Integrity (SRI) hash for JavaScript verification purposes. It can be used with either the file or the url parameter. The sri_hash value should not include the sha384- prefix.

The sri_hash is ignored if the url specifies a development server.

`entitlements`

The entitlements parameter specifies the resources that the extension can access. The extension will not be able to access the resources unless it is listed in entitlements.

An extension application must specify entitlements; the application will not run without them.

The entitlements parameter includes the following subparameters. If a subparameter is not included, then by default the extension is not allowed access to that entitlement.

Parameter	Description	Example
`local_storage`	Specifies whether the extension is allowed to access local storage.	`local_storage: yes`
`navigation`	Specifies whether the extension is allowed to navigate to a different page in Looker.	`navigation: yes`
`new_window`	Specifies whether the extension is allowed to open a new browser window or tab.	`new_window: yes`
`new_window_external_urls`	A comma-separated list of URLs or partial URLs for which an extension may open a new window. This entitlement requires the `new_window` entitlement. You can include wildcard characters such as `*` for subdomains and paths.	`new_window_external_urls: ["https://www.gmail.com"]`
`use_form_submit`	ADDED7.18 Specifies whether the extension is allowed to submit forms. Looker components that use HTML forms will require `use_form_submit: yes` to work properly.	`use_form_submit: yes`
`use_embeds`	ADDED7.18 Specifies whether the extension is allowed to use the Looker Embed SDK.	`use_embeds: yes`
`use_downloads`	ADDED21.6 Specifies whether the extension is allowed to download files.	`use_downloads: yes`
`use_iframes`	ADDED21.6 Specifies whether the extension is allowed to create an iframe.	`use_iframes: yes`
`use_clipboard`	ADDED21.8 Specifies whether the extension is allowed to write to the system clipboard. For security purposes, extensions are not allowed to read from the system clipboard.	`use_clipboard: yes`
`core_api_methods`	A comma-separated list of Looker API methods that the extension uses.	`core_api_methods: ["run_inline_query", "lookml_model_explore", "all_lookml_models"]`
`external_api_urls`	A comma-separated list of URLs for external APIs that the extension uses. As shown in the example, you can include wildcard characters such as `*`. Starting in Looker 21.6, extensions that make direct use of `fetch` or `XHR.open` JavaScript calls (as opposed to using the `extensionSDK.fetchProxy` or `extensionSDK.serverProxy` API calls) must include the URLs in the list.	`external_api_urls: ["http://example.com:3000", "https://*.googleapis.com"]`
`oauth2_urls`	A comma-separated list of URLs for OAuth 2.0 authentication and code exchange that the extension uses.	`oauth2_urls: ["https://accounts.google.com/o/oauth2/v2/auth"]`
`global_user_attributes`	A comma-separated list of system-wide user attributes that the extension uses.	`global_user_attributes: ["company", "department"]`
`scoped_user_attributes`	A comma-separated list of extension-specific user attributes that the extension uses.	`scoped_user_attributes: ["first_name", "last_name"]`

Example

The following is the application parameter from the project manifest file for Looker’s kitchen sink extension example:

application: kitchensink { label: "Kitchen sink" url: "http://localhost:8080/bundle.js" entitlements: { local_storage: yes navigation: yes new_window: yes use_form_submit: yes use_embeds: yes core_api_methods: ["all_connections","search_folders", "run_inline_query", "me", "all_looks", "run_look"] external_api_urls: ["http://127.0.0.1:3000", "http://localhost:3000", "https://∗.googleapis.com", "https://∗.github.com", "https://REPLACE_ME.auth0.com"] oauth2_urls: ["https://accounts.google.com/o/oauth2/v2/auth", "https://github.com/login/oauth/authorize", "https://dev-5eqts7im.auth0.com/authorize", "https://dev-5eqts7im.auth0.com/login/oauth/token", "https://github.com/login/oauth/access_token"] scoped_user_attributes: ["user_value"] global_user_attributes: ["locale"] } }

You can find additional examples in Looker’s extension-examples repository.

Articles in this section