@drift-labs/sdk
Version:
SDK for Drift Protocol
34 lines (33 loc) • 1.69 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SwitchboardOnDemandClient = void 0;
const anchor_1 = require("@coral-xyz/anchor");
const switchboard_on_demand_30_json_1 = __importDefault(require("../idl/switchboard_on_demand_30.json"));
const numericConstants_1 = require("../constants/numericConstants");
const anchor_30_1 = require("@coral-xyz/anchor-30");
const SB_PRECISION_EXP = new anchor_1.BN(18);
const SB_PRECISION = new anchor_1.BN(10).pow(SB_PRECISION_EXP.sub(numericConstants_1.PRICE_PRECISION_EXP));
class SwitchboardOnDemandClient {
constructor(connection) {
this.connection = connection;
this.coder = new anchor_30_1.BorshAccountsCoder(switchboard_on_demand_30_json_1.default);
}
async getOraclePriceData(pricePublicKey) {
const accountInfo = await this.connection.getAccountInfo(pricePublicKey);
return this.getOraclePriceDataFromBuffer(accountInfo.data);
}
getOraclePriceDataFromBuffer(buffer) {
const pullFeedAccountData = this.coder.decodeUnchecked('PullFeedAccountData', buffer);
const landedAt = pullFeedAccountData.submissions.reduce((max, s) => anchor_1.BN.max(max, s.landed_at), new anchor_1.BN(0));
return {
price: pullFeedAccountData.result.value.div(SB_PRECISION),
slot: landedAt,
confidence: pullFeedAccountData.result.range.div(SB_PRECISION),
hasSufficientNumberOfDataPoints: true,
};
}
}
exports.SwitchboardOnDemandClient = SwitchboardOnDemandClient;