@drift-labs/common
Version:
Common functions for Drift
49 lines • 2.02 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getResponseTime = exports.getRpcWithLowestPing = exports.getResponseTimes = void 0;
const getResponseTimes = async (rpcOptions) => {
const responseTimes = await Promise.all(rpcOptions.map(async (rpc) => {
const responseTime = await (0, exports.getResponseTime)(rpc.value);
return { value: rpc.value, latency: responseTime };
}));
return responseTimes.filter((result) => result.latency != null);
};
exports.getResponseTimes = getResponseTimes;
const getRpcWithLowestPing = async (rpcEndpoints) => {
const results = await Promise.all(rpcEndpoints.map((endpoint) => (0, exports.getResponseTime)(endpoint.value)));
const validResults = results.filter((responseTime) => responseTime !== -1 && responseTime != null);
if (validResults.length <= 0)
return undefined;
const lowestResponseTime = Math.min(...validResults);
const rpcIndex = results.indexOf(lowestResponseTime);
return rpcEndpoints[rpcIndex];
};
exports.getRpcWithLowestPing = getRpcWithLowestPing;
const getResponseTime = async (endpoint) => {
if (!endpoint)
return null;
const storage = typeof localStorage !== 'undefined'
? localStorage
: require('localstorage-memory');
const accessToken = storage.getItem('auth-token');
const startTime = Date.now();
const result = await fetch(`${endpoint}`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
Authorization: 'Bearer ' + accessToken,
},
body: JSON.stringify({ jsonrpc: '2.0', id: 1, method: 'getHealth' }),
}).catch((err) => {
console.error('Error checking RPC response time ', err);
return null;
});
if (!result)
return -1;
if (!result.ok)
return -1;
const endTime = Date.now();
return endTime - startTime;
};
exports.getResponseTime = getResponseTime;
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