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Version: 0.4.x(Latest)

Introduction​

Access declarations cover the registration of menu and permission filter callbacks for source plugins. Source plugins register filters through pluginhost.Declarations.Access() and perform supplementary checks at runtime based on business context to determine whether workbench menus are visible and permissions remain valid. Dynamic plugins declare their base menu and permission structures through plugin.yaml and do not support runtime dynamic filter callbacks.

Capability Phase: Declaration

Supported Plugin Types: Source plugins, dynamic plugins

Capability Design​

Access Control Filter Model​

The MenuDescriptor interface describes the full information of a menu item:

MethodDescription
ID()Menu ID
ParentID()Parent menu ID
Name()Menu name
Path()Frontend route path
Component()Frontend component path
Permissions()Permission identifiers
MenuKey()Unique menu key
Type()Menu type: D (directory), M (menu), B (button)
Visible()Whether visible
Status()Status

Permission Descriptor​

The PermissionDescriptor interface describes permission item information:

MethodDescription
MenuKey()Associated menu key
MenuName()Associated menu name
Permission()Permission identifier

Filter Return Values​

Return ValueDescription
trueAllow: menu is visible or permission is granted
falseDeny: menu is hidden or permission is rejected

Interface Definition​

Source Plugin Interface​

Source plugins register filters through Access():

MethodDescription
RegisterMenuFilterRegisters a menu filter with the specified extension point, execution mode, and handler function
RegisterPermissionFilterRegisters a permission filter with the specified extension point, execution mode, and handler function

Dynamic Plugin Interface​

Dynamic plugins declare menu structures through the plugin.yaml menu manifest. Manifest fields:

FieldTypeDescription
keystringUnique menu key
parent_keystringParent menu key
namestringMenu name
pathstringFrontend route path
componentstringFrontend component path
permsstringPermission identifier
typestringMenu type
sortintSort weight
visibleintWhether visible
statusintStatus

Dynamic plugins do not support runtime dynamic filtering. Menu structures and permission identifiers are statically declared in the manifest and synchronized to governance data by the host during installation or upgrade.

Usage​

Source Plugin Usage​

Source plugins register filters in init() through the access control entry returned by pluginhost.NewDeclarations:

func init() {
    plugin := pluginhost.NewDeclarations("my-author-my-domain-my-cap")

    // Menu filter: hide specific menus
    if err := plugin.Access().RegisterMenuFilter(
        pluginhost.ExtensionPointMenuFilter,
        pluginhost.CallbackExecutionModeBlocking,
        func(ctx context.Context, menu pluginhost.MenuDescriptor) (bool, error) {
            // Determine menu visibility based on business logic
            if menu.MenuKey() == "plugin:my-plugin:admin" {
                return isAdmin(ctx), nil
            }
            return true, nil
        },
    ); err != nil {
        panic(err)
    }

    // Permission filter: dynamic permission check
    if err := plugin.Access().RegisterPermissionFilter(
        pluginhost.ExtensionPointPermissionFilter,
        pluginhost.CallbackExecutionModeBlocking,
        func(ctx context.Context, perm pluginhost.PermissionDescriptor) (bool, error) {
            // Determine permission validity based on business logic
            if perm.Permission() == "my-plugin:report:export" {
                return hasExportPermission(ctx), nil
            }
            return true, nil
        },
    ); err != nil {
        panic(err)
    }

    if err := pluginhost.RegisterSourcePlugin(plugin); err != nil {
        panic(err)
    }
}

Dynamic Plugin Usage​

Dynamic plugins declare menu structures in their manifest:

menus:
  - key: plugin:my-plugin:dashboard
    name: Dashboard
    path: /my-plugin/dashboard
    component: pages/dashboard
    type: M
    sort: 1
    visible: 1
    status: 1
  - key: plugin:my-plugin:reports
    name: Reports
    path: /my-plugin/reports
    component: pages/reports
    perms: my-plugin:report:view
    type: M
    sort: 2
    visible: 1
    status: 1
    query:
      embedded-mount: "true"

Dynamic plugin menus are registered to governance data by the host during installation or upgrade. Runtime dynamic filtering is not supported.

Design Constraints​

  • Filter callbacks must return quickly. Menu and permission filters execute on every request; callbacks should avoid time-consuming operations.
  • Returning false means deny. A menu filter returning false hides the menu; a permission filter returning false denies access.
  • Multiple filters execute in registration order. If any filter returns false, the menu is hidden or the permission is denied.
  • Dynamic plugin menus are statically declared. Dynamic plugins do not support runtime dynamic filtering; menu structures are fixed in the manifest.
  • Access declarations are not runtime domain capabilities. Access() is only used for source plugin declaration-phase registration and is not mounted on pluginhost.Services or pluginbridge.Services.
  • Menu key format must follow convention. Menu keys must match the plugin:{plugin-id}:{resource} format.
  • Permission identifier format must follow convention. Permission identifiers must match the {plugin-id}:{resource}:{action} format.