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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | import { E } from '@endo/eventual-send';
import { makeDefaultExo } from '@metamask/kernel-utils/exo';
import type {
Baggage,
OcapURLIssuerService,
OcapURLRedemptionService,
} from '@metamask/ocap-kernel';
import type { ServicePoint } from '@metamask/service-discovery-types';
import { ECHO_SERVICE_DESCRIPTION, makeEchoService } from './service.ts';
import {
getRemotableSpec,
makeContactEndpoint,
makeRegistrationToken,
registerServicesWithMatcher,
} from '../vat-lib/index.ts';
const SERVICE_NAME = 'EchoService';
type Services = {
ocapURLIssuerService: OcapURLIssuerService;
ocapURLRedemptionService: OcapURLRedemptionService;
};
/**
* Build the Echo service vat root.
*
* @param _vatPowers - Vat powers (unused).
* @param parameters - Vat parameters; `matcherUrl` (string) is read at
* bootstrap and used to register the service with a matcher.
* @param _baggage - Vat baggage (unused).
* @returns The vat root exo.
*/
// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
export function buildRootObject(
_vatPowers: unknown,
parameters: Record<string, unknown>,
_baggage: Baggage,
) {
const matcherUrl =
typeof parameters?.matcherUrl === 'string' ? parameters.matcherUrl : '';
let contactUrl = '';
return makeDefaultExo(`${SERVICE_NAME}VatRoot`, {
async bootstrap(_vats: Record<string, unknown>, services: Services) {
const serviceExo = makeEchoService();
const remotableSpec = await getRemotableSpec(
serviceExo,
ECHO_SERVICE_DESCRIPTION,
);
const registrationToken = makeRegistrationToken();
const contact = makeContactEndpoint({
name: SERVICE_NAME,
service: serviceExo as unknown as ServicePoint,
description: ECHO_SERVICE_DESCRIPTION,
remotableSpec,
getContactUrl: () => contactUrl,
expectedToken: registrationToken,
providerTag: 'echo',
});
contactUrl = await E(services.ocapURLIssuerService).issue(contact);
await registerServicesWithMatcher({
matcherUrl,
ocapURLRedemptionService: services.ocapURLRedemptionService,
entries: [{ name: SERVICE_NAME, contact, registrationToken }],
});
return harden({ name: SERVICE_NAME, contactUrl });
},
getContactUrl() {
return contactUrl;
},
});
}
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