commit 9903b7c519b2c3399878ca7c740553a120d14153 · gmstn.systems/lattice

+10 -107

src/index.ts

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       import { OWNER_DID, SERVER_PORT, SERVICE_DID } from "@/lib/env";

     

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       import { __DEV__, OWNER_DID, SERVER_PORT, SERVICE_DID } from "@/lib/env";

     

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       import { performHandshakes } from "@/lib/setup";

     

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       import { setRegistrationState } from "@/lib/state";

     

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       import type { AtUri, Did } from "@/lib/types/atproto";

     

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       import type { SessionInfo } from "@/lib/types/handshake";

     
···

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               );

     

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           }

     

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           const latticeRecord = await getRecordFromAtUri({

     

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           const latticeAtUri: Required<AtUri> = {

     

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               // @ts-expect-error alas, template literal weirdness continues uwu

     

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               authority: OWNER_DID,

     

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               collection: "systems.gmstn.development.lattice",

     

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               rKey: latticeUrlOrigin,

     

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           });

     

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           };

     

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           if (latticeRecord.ok) setRegistrationState(true);

     

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           const latticeRecord = await getRecordFromAtUri(latticeAtUri);

     

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           if (latticeRecord.ok) {

     

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               setRegistrationState(true);

     

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           }

     

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           const prismWebsocket = connectToPrism({

     

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               wantedCollections: ["systems.gmstn.development.*"],

     
···

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           // TODO: probably move this to an `attachListeners` hook that attaches the listeners we want.

     

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           attachLatticeRegistrationListener(prismWebsocket);

     

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           const constellationBacklinksResult = await getConstellationBacklink({

     

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               subject: SERVICE_DID,

     

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               source: {

     

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                   nsid: "systems.gmstn.development.channel",

     

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                   fieldName: "routeThrough.uri",

     

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               },

     

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           });

     

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           if (!constellationBacklinksResult.ok) {

     

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               throw new Error(

     

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                   "Something went wrong fetching constellation backlinks to do Shard handshakes",

     

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               );

     

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           }

     

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           const { records: channelBacklinks } = constellationBacklinksResult.data;

     

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           // TODO: For private lattices, do permission check on owner's PDS

     

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           // and filter out records from unauthorised pdses.

     

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           const channelRecordsPromises = channelBacklinks.map(

     

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               async ({ did, collection, rkey }) =>

     

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                   await getRecordFromAtUri({

     

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                       // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                       authority: did,

     

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                       collection,

     

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                       rKey: rkey,

     

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                   }),

     

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           );

     

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           const channelRecordResults = await Promise.all(channelRecordsPromises);

     

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           // mapping of shard -> list of channels (all AtUris)

     

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           const channelsByShard = new Map<AtUri, Array<AtUri>>();

     

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           channelRecordResults.forEach((result, idx) => {

     

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               if (!result.ok) return;

     

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               const { success, data: channelRecord } =

     

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                   systemsGmstnDevelopmentChannelRecordSchema.safeParse(result.data);

     

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               if (!success) return;

     

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               const { storeAt } = channelRecord;

     

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               const storeAtAtUriResult = stringToAtUri(storeAt.uri);

     

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               if (!storeAtAtUriResult.ok) return;

     

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               const storeAtAtUri = storeAtAtUriResult.data;

     

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               // this is fine because Promise.all() preserves the order of the arrays

     

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               const {

     

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                   did: authority,

     

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                   collection,

     

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                   rkey: rKey,

     

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               } = channelBacklinks[idx];

     

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               const existingMapValue = channelsByShard.get(storeAtAtUri);

     

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               const currentChannelUri: Required<AtUri> = {

     

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                   // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                   authority,

     

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                   collection,

     

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                   rKey,

     

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               };

     

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               if (!existingMapValue) {

     

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                   channelsByShard.set(storeAtAtUri, [currentChannelUri]);

     

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               } else {

     

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                   const prevUris = existingMapValue;

     

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                   channelsByShard.set(storeAtAtUri, [...prevUris, currentChannelUri]);

     

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               }

     

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           });

     

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           const channelSessions = new Map<AtUri, SessionInfo>();

     

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           const channelsByShardEntries = channelsByShard.entries();

     

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           for (const entry of channelsByShardEntries) {

     

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               const shardAtUri = entry[0];

     

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               let shardDid: Did | undefined;

     

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               // TODO: if the rkey of the shard URI is not a valid domain, then it must be a did:plc

     

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               // we need to find a better way to enforce this. we really should explore just resolving the

     

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               // record and then checking the record value for the actual domain instead.

     

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               // did resolution hard;;

     

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               if (

     

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                   isDomain(shardAtUri.rKey ?? "") ||

     

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                   shardAtUri.rKey?.startsWith("localhost:")

     

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               ) {

     

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                   // from the isDomain check, if we pass, we can conclude that

     

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                   shardDid = `did:web:${encodeURIComponent(shardAtUri.rKey ?? "")}`;

     

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               } else {

     

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                   shardDid = `did:plc:${encodeURIComponent(shardAtUri.rKey ?? "")}`;

     

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               }

     

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               const channelAtUris = entry[1];

     

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               const handshakeResult = await initiateHandshakeTo({

     

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                   did: shardDid,

     

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                   channels: channelAtUris,

     

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               });

     

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               if (!handshakeResult.ok) return;

     

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               const sessionInfo = handshakeResult.data;

     

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               console.log("Handshake to", shardAtUri.rKey, "complete!");

     

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               console.log("Session info:", sessionInfo);

     

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               channelSessions.set(shardAtUri, sessionInfo);

     

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           }

     

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           await performHandshakes(latticeAtUri);

     

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           const server = await setupServer();

     

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           for (const [url, route] of Object.entries(routes)) {

+120

src/lib/setup.ts

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       import type { AtUri, Did } from "@/lib/types/atproto";

     

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       import type { SessionInfo } from "@/lib/types/handshake";

     

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       import { systemsGmstnDevelopmentChannelRecordSchema } from "@/lib/types/lexicon/systems.gmstn.development.channel";

     

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       import {

     

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           atUriToString,

     

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           getRecordFromAtUri,

     

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           stringToAtUri,

     

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       } from "@/lib/utils/atproto";

     

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       import { getConstellationBacklink } from "@/lib/utils/constellation";

     

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       import { isDomain } from "@/lib/utils/domains";

     

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       import { initiateHandshakeTo } from "@/lib/utils/handshake";

     

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       export const performHandshakes = async (latticeAtUri: AtUri) => {

     

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           const latticeAtUriString = atUriToString(latticeAtUri);

     

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           const constellationBacklinksResult = await getConstellationBacklink({

     

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               subject: latticeAtUriString,

     

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               source: {

     

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                   nsid: "systems.gmstn.development.channel",

     

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                   fieldName: "routeThrough.uri",

     

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               },

     

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           });

     

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           if (!constellationBacklinksResult.ok) {

     

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               throw new Error(

     

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                   "Something went wrong fetching constellation backlinks to do Shard handshakes",

     

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               );

     

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           }

     

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           const { records: channelBacklinks } = constellationBacklinksResult.data;

     

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           // TODO: For private lattices, do permission check on owner's PDS

     

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           // and filter out records from unauthorised pdses.

     

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           const channelRecordsPromises = channelBacklinks.map(

     

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               async ({ did, collection, rkey }) =>

     

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                   await getRecordFromAtUri({

     

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                       // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                       authority: did,

     

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                       collection,

     

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                       rKey: rkey,

     

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                   }),

     

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           );

     

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           const channelRecordResults = await Promise.all(channelRecordsPromises);

     

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           // mapping of shard -> list of channels (all AtUris)

     

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           const channelsByShard = new Map<AtUri, Array<AtUri>>();

     

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           channelRecordResults.forEach((result, idx) => {

     

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               if (!result.ok) return;

     

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               const { success, data: channelRecord } =

     

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                   systemsGmstnDevelopmentChannelRecordSchema.safeParse(result.data);

     

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               if (!success) return;

     

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               const { storeAt } = channelRecord;

     

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               const storeAtAtUriResult = stringToAtUri(storeAt.uri);

     

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               if (!storeAtAtUriResult.ok) return;

     

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               const storeAtAtUri = storeAtAtUriResult.data;

     

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               // this is fine because Promise.all() preserves the order of the arrays

     

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               const {

     

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                   did: authority,

     

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                   collection,

     

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                   rkey: rKey,

     

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               } = channelBacklinks[idx];

     

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               const existingMapValue = channelsByShard.get(storeAtAtUri);

     

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               const currentChannelUri: Required<AtUri> = {

     

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                   // @ts-expect-error seriously i gotta do something about the template literals not converting properly SIGH

     

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                   authority,

     

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                   collection,

     

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                   rKey,

     

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               };

     

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               if (!existingMapValue) {

     

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                   channelsByShard.set(storeAtAtUri, [currentChannelUri]);

     

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               } else {

     

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                   const prevUris = existingMapValue;

     

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                   channelsByShard.set(storeAtAtUri, [...prevUris, currentChannelUri]);

     

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               }

     

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           });

     

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           // TODO: move this to a persisted state

     

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           const channelSessions = new Map<AtUri, SessionInfo>();

     

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           const channelsByShardEntries = channelsByShard.entries();

     

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           for (const entry of channelsByShardEntries) {

     

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               const shardAtUri = entry[0];

     

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               let shardDid: Did | undefined;

     

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               // TODO: if the rkey of the shard URI is not a valid domain, then it must be a did:plc

     

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               // we need to find a better way to enforce this. we really should explore just resolving the

     

       95
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               // record and then checking the record value for the actual domain instead.

     

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               // did resolution hard;;

     

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               if (

     

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                   isDomain(shardAtUri.rKey ?? "") ||

     

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                   shardAtUri.rKey?.startsWith("localhost:")

     

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               ) {

     

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                   // from the isDomain check, if we pass, we can conclude that

     

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                   shardDid = `did:web:${encodeURIComponent(shardAtUri.rKey ?? "")}`;

     

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               } else {

     

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                   shardDid = `did:plc:${encodeURIComponent(shardAtUri.rKey ?? "")}`;

     

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               }

     

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               const channelAtUris = entry[1];

     

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       +
       

     

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               const handshakeResult = await initiateHandshakeTo({

     

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                   did: shardDid,

     

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                   channels: channelAtUris,

     

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               });

     

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               if (!handshakeResult.ok) return;

     

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               const sessionInfo = handshakeResult.data;

     

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               console.log("Handshake to", shardAtUri.rKey, "complete!");

     

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               console.log("Session info:", sessionInfo);

     

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               channelSessions.set(shardAtUri, sessionInfo);

     

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           }

     

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           console.log(channelSessions);

     

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       };