@atproto/repo
Version:
atproto repo and MST implementation
79 lines • 3.29 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.getRecords = exports.getFullRepo = void 0;
const car_1 = require("../car");
const cid_set_1 = require("../cid-set");
const error_1 = require("../error");
const mst_1 = require("../mst");
const types_1 = require("../types");
const util = __importStar(require("../util"));
// Full Repo
// -------------
const getFullRepo = (storage, commitCid) => {
return (0, car_1.writeCarStream)(commitCid, iterateFullRepo(storage, commitCid));
};
exports.getFullRepo = getFullRepo;
async function* iterateFullRepo(storage, commitCid) {
const commit = await storage.readObjAndBytes(commitCid, types_1.def.commit);
yield { cid: commitCid, bytes: commit.bytes };
const mst = mst_1.MST.load(storage, commit.obj.data);
for await (const block of mst.carBlockStream()) {
yield block;
}
}
// Narrow slices
// -------------
const getRecords = (storage, commitCid, paths) => {
return (0, car_1.writeCarStream)(commitCid, iterateRecordBlocks(storage, commitCid, paths));
};
exports.getRecords = getRecords;
async function* iterateRecordBlocks(storage, commitCid, paths) {
const commit = await storage.readObjAndBytes(commitCid, types_1.def.commit);
yield { cid: commitCid, bytes: commit.bytes };
const mst = mst_1.MST.load(storage, commit.obj.data);
const cidsForPaths = await Promise.all(paths.map((p) => mst.cidsForPath(util.formatDataKey(p.collection, p.rkey))));
const allCids = cidsForPaths.reduce((acc, cur) => {
return acc.addSet(new cid_set_1.CidSet(cur));
}, new cid_set_1.CidSet());
const found = await storage.getBlocks(allCids.toList());
if (found.missing.length > 0) {
throw new error_1.MissingBlocksError('writeRecordsToCarStream', found.missing);
}
for (const block of found.blocks.entries()) {
yield block;
}
}
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