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dispatch: typed handlers, respond/defer/error, automatic ErrorResponse, watchdog

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src/dispatcher.ts routes a directive to capability.on(name | "*"), device.onDirective() or
device.onReportState(), with the payload checked by the descriptor of the interface. The
DirectiveContext answers with respond/report/defer/error; respond() and report() start from
device.state(). A handler or 1.x listener that throws or rejects is answered with INTERNAL_ERROR
(an AlexaError with itself) and reported through "error", never as an unhandled rejection.
Undeclared interface, unknown directive, AdjustMode on an unordered mode and a missing handler
get INVALID_DIRECTIVE, a bad payload INVALID_VALUE; a device with an "Event" or "ReportState"
listener keeps the answer to itself. Every answer passes the dispatcher: the first one per
correlationToken is published, a second is refused. No answer within answerWithinMs (6500,
0 = off, unref'd timer) sends INTERNAL_ERROR and emits "unanswered". A messageId that arrived
in the last 60 s is dropped. New: "unknownEndpoint", options answerUnknownEndpoints, publisher,
timers, and bridge.receive() to run a bridge without a broker. 168 tests pass (18 new).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
David 2026-09-28 19:49:41 +00:00
parent e0fe9d2812
commit feff828ec1
40 changed files with 2149 additions and 136 deletions
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4
dist/cjs/topics.js vendored
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@ -2,7 +2,7 @@
// The topics of the Alex2MQTT contract, named once. The backend and Alex2ESP use the same names, so none of them
// can change here alone.
Object.defineProperty(exports, "__esModule", { value: true });
exports.changeReport = exports.deferred = exports.response = exports.subscriptions = exports.directive = exports.discoverReply = exports.discover = void 0;
exports.changeReport = exports.DIRECTIVE_BUDGET_MS = exports.deferred = exports.response = exports.subscriptions = exports.directive = exports.discoverReply = exports.discover = void 0;
exports.directiveEndpoint = directiveEndpoint;
/** Where the backend asks for the endpoints of the root. */
const discover = (root) => `${root}/discover`;
@ -30,6 +30,8 @@ exports.response = response;
/** Where the answer goes once a DeferredResponse was sent for the directive. */
const deferred = (root, endpointId) => `${root}/${endpointId}/deferredResponse`;
exports.deferred = deferred;
/** How long Alex2MQTT waits for the answer to a directive before it tells Alexa that the endpoint did not answer. */
exports.DIRECTIVE_BUDGET_MS = 7000;
/** Where every ChangeReport of the root goes: the backend adds the user's token and posts it to Alexa. */
const changeReport = (root) => `${root}/changeReport`;
exports.changeReport = changeReport;