spydra-fabric-contract-node
Version:
Spydra Base Contract for Hyperledger Fabric that provides advanced functionalities for any Chaincode
69 lines • 3.97 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SpydraContract = void 0;
const fabric_contract_api_1 = require("fabric-contract-api");
const fabric_common_1 = require("fabric-common");
// SpydraContract defines the utility functions that are provided by the Spydra base smart contract for Hyperledger Fabric.
class SpydraContract extends fabric_contract_api_1.Contract {
constructor(name) {
super(name);
}
// ReadDataFromQueryString executes a Couch DB rich query and provides paginated response.
// The function accepts a Couch DB rich query string, the page size for the results and a bookmark.
ReadDataFromQueryString(ctx, queryString, pageSize, bookmark) {
var _a, e_1, _b, _c;
return __awaiter(this, void 0, void 0, function* () {
const logger = fabric_common_1.Utils.getLogger('SpydraContract');
const queryData = [];
const response = {};
try {
const queryResponse = ctx.stub.getQueryResultWithPagination(queryString, pageSize, bookmark);
try {
for (var _d = true, queryResponse_1 = __asyncValues(queryResponse), queryResponse_1_1; queryResponse_1_1 = yield queryResponse_1.next(), _a = queryResponse_1_1.done, !_a; _d = true) {
_c = queryResponse_1_1.value;
_d = false;
const queryRecord = _c;
const recordString = queryRecord.value.toString('utf8');
queryData.push(JSON.parse(recordString));
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (!_d && !_a && (_b = queryResponse_1.return)) yield _b.call(queryResponse_1);
}
finally { if (e_1) throw e_1.error; }
}
response.records = queryData;
const metadata = (yield queryResponse).metadata;
response.count = metadata.fetchedRecordsCount;
if (metadata.fetchedRecordsCount >= pageSize) {
response.bookmark = metadata.bookmark;
}
}
catch (err) {
logger.error(`Query failed. Error: ${err}`);
throw new Error(`Query failed. Error: ${err}`);
}
return response;
});
}
}
exports.SpydraContract = SpydraContract;
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