Components

Components are the basic unit of executable software on Fuchsia.

Architectural concepts

• Introduction: Understanding components and the component framework.
• Component manager: The runtime.
• Lifecycle: Component instance progression from creation to destruction.
• Topology: The relationships among component instances.
• Realms: Sub-trees of the component instance topology.
• Identifiers: Identifiers for components and component instances.

Developing components

• Capabilities: Different types of capabilities and how to route them between components.
• Component manifests: How to define a component for the framework.
• ELF runner: How to launch a component from an ELF file. Typically useful for developing system components in C++, Rust, or Go.

Extending the component framework

• Runners: Instantiate components; add support for more runtimes.
• Resolvers: Find components from URLs; add support for methods of software packaging and distribution.

Internals

• Component manifest design principles
• Components vs. processes: how the concepts differ.