Function checkMasterHealth

js/botasaurus-server-js/src/api-config.ts:63–98

* Check master endpoint health, retrying up to 3 times.

(masterEndpoint: string)

 * Check master endpoint health, retrying up to 3 times.
 */
async function checkMasterHealth(masterEndpoint: string) {
    const MAX_RETRIES = 3;
    let retryCount = 0;
    while (retryCount < MAX_RETRIES) {
        retryCount++;
        try {
            const response = await fetch(`${masterEndpoint}/health`, {
                method: 'GET',
                signal: AbortSignal.timeout(10000) // 10 second timeout
            });

            if (!response.ok) {
                throw new Error(`Health check returned status ${response.status}`);
            }
            if (retryCount > 1) {
                console.debug(`[K8s] Successfully reached master after retry (attempt ${retryCount}/${MAX_RETRIES}): ${masterEndpoint}`);
            }
            return true;
        } catch (error: any) {
            console.error(error);
            console.debug(`[K8s] Health check error (attempt ${retryCount}/${MAX_RETRIES}): ${error instanceof Error ? error.message : error} - ${masterEndpoint}`);
            if (retryCount < MAX_RETRIES) {
                // Wait briefly before retrying
                await sleep(3);
                continue;
            }
        }
    }

    console.error(`[K8s] Failed to reach master after ${MAX_RETRIES} attempts: ${masterEndpoint}`);
    if (!ApiConfig.isMasterNode()) {
        // If not master node, exit the process
        process.exit(1);
    }
    return false;
}


function addCorsHeaders(reply: any) {