Host not connected, host shutting down and instance not running are
now UnavailableError (503) instead of ConflictError. The request error
migration notes move to a new 2.1 guide, since this ships in 2.1.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Error responses now carry the registered name of the thrown error's
class, and the requester rejects with an instance of that class instead
of a generic RequestError. Error classes are registered like message
classes, and plugins list their own in `errors`.
RequestError is replaced by a hierarchy following the HTTP status codes:
ClientError (ValidationError, ForbiddenError, NotFoundError,
TimeoutError, ConflictError) and ServerError (InternalServerError).
PermissionError is PermissionDeniedError and the config errors
InvalidValue, InvalidField and InvalidAccess gain an Error suffix.
Link logs only errors whose class is not registered. These arrive on the
other side as InternalServerError with the original message and stack,
so an error forwarded through the controller is logged once, where it
was thrown.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Plugins that still want a class for state use a private constructor,
an async static fromContext and a static WeakMap lookup, which also
replaces controller.plugins.get() for cross-plugin access. Check
loadedPlugins with Set.has on the info from pluginInfos.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Covers the plugin API changes between 2.0.0-alpha.27 and 2.0.0: ESM,
entrypoint functions and hooks, loadedPlugins, permissions on the
plugin declaration, the ctl renames, staticRoot and optional peer
dependencies.
Document that from 2.0 major versions contain breaking changes for end
users while minor versions may contain breaking changes for the plugin
API, and fix stale examples and names in writing-plugins.md and
managing-a-cluster.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
