Identifying components

Components are identified by a URL. The framework resolves component URLs to component declarations with the help of a component resolver. Resolvers are components themselves that are capable of handling a particular URL scheme and fetching the component manifest, program, and assets.

Most components are published inside a Fuchsia package, so the component URL is a reference to the component manifest inside that package. See the following example:

fuchsia-pkg://{{ '<var>' }}foo-package{{ '</var>' }}#meta/{{ '<var>' }}{{ '</var>' }}

Component instances are identified by a topological path reference known as a moniker. A component's moniker indicates its location within the component instance tree as an absolute or relative path. For example, the moniker path /core/system-updater refers to the instance of system-updater that exists in the core realm.