Reviewed on: 2021-10-01
session_manager is the component that runs and manages sessions. For more information on what sessions are and what roles they play in products built on Fuchsia, see Session Framework
session_manager component to builds by including
--with-base //src/session/bin/session_manager in the
fx set invocation followed by rebuilding and re-paving the device.
Product configurations built on Session Framework (such as
fx set workstation.x64) include
//src/session/bin/session_manager by default.
session_manager is launched in one of two ways: manually or automatically on system boot.
In general, running manually is useful during development, while running on boot is desirable for a production configuration.
Use the [
ffx session]((/docs/development/tools/ffx/getting-started.md) tool to launch a specific session:
ffx session launch fuchsia-pkg://fuchsia.com/your_session#meta/your_session.cm
session_manager attempts to launch a session on boot based on the contents of its
session_url configuration parameter.
To boot into a session, include
session_manager and the session component in the base package set and assign the URL of the session component to the product configuration:
fx set core.qemu-x64 \ --with-base //src/session/bin/session_manager \ --with-base //path/to/your_session \ --args=product_config.session_url="fuchsia-pkg://fuchsia.com/your_package#meta/your_session.cm"
This can also be configured directly in a product's definition
*.gni files or via
Re-build, re-pave, and restart your device and it will boot into
session_manager and launch your session.
Unit tests for
session_manager are included in the
session_manager_tests package, and integration tests are included in the
Both can be included in your build by adding
--with //src/session:tests to your
fx test session_manager_tests fx test session_manager_integration_tests
The entry point for
session_manager is in
src/main.rs with implementation details in other files within
Unit tests are co-located with the code, while integration tests are in