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// (DESIGN 2.2, 2.3, 2.7). Retries reuse the idempotency key; only timestamp, nonce and signature
// headers are rebuilt per attempt.
import { asYuguError, fromHttpResponse, isRetryable, localError } from './errors.js';
import { computeRetryDelay } from './retry.js';
import { wxRequest } from './transport.js';
import { onAbort } from './abort.js';
const TAG = 'YuguSDK:http';
export function describeError(err) {
if (err.httpStatus) return 'HTTP ' + err.httpStatus + ' code=' + err.code;
return err.category + ' code=' + err.code;
}
function decorate(err, spec, attempt) {
err.attempts = attempt;
if (!err.idempotencyKey && spec.key) err.idempotencyKey = spec.key;
if (!err.op) err.op = spec.op;
return err;
}
/** Sleeps ms, rejecting early with cancelError() when the signal aborts. */
export function sleep(ms, signal, cancelError) {
return new Promise((resolve, reject) => {
let off = null;
const t = setTimeout(() => {
if (off) off();
resolve();
}, ms);
off = onAbort(signal, () => {
clearTimeout(t);
reject(cancelError());
});
});
}
/**
* ctx: {wx, logger, events, random}
* spec: {op, method, path, url, key, retryAllowed, policy, attemptTimeoutMs, totalTimeoutMs, signal,
* cancelError(), build(attempt) -> {header, data}, parse(response, attempt) -> result}
*/
export async function executeCall(ctx, spec) {
const logger = ctx.logger;
const events = ctx.events;
const startedAt = Date.now();
const deadline = startedAt + spec.totalTimeoutMs;
const policy = spec.policy;
if (!spec.retryAllowed && policy.maxRetries > 0) {
logger.debug(TAG, spec.op + ': retries disabled because the call carries no idempotency key');
}
let attempt = 0;
for (;;) {
attempt += 1;
let err;
try {
if (spec.signal && spec.signal.aborted) throw spec.cancelError();
const remaining = deadline - Date.now();
if (remaining <= 0) throw localError(90002, 'total timeout of ' + spec.totalTimeoutMs + ' ms exceeded');
const req = spec.build(attempt);
events.emit('onRequestStart', spec.op, spec.method, spec.path, attempt);
logger.debug(TAG, spec.method + ' ' + spec.path + ' attempt ' + attempt + (spec.key ? ' idempotencyKey=' + spec.key : ''));
const res = await wxRequest(ctx.wx, {
url: spec.url,
method: spec.method,
header: req.header,
data: req.data,
timeoutMs: Math.max(1, Math.min(spec.attemptTimeoutMs, remaining)),
signal: spec.signal,
cancelError: spec.cancelError,
});
if (res.statusCode >= 200 && res.statusCode < 300) {
const out = spec.parse(res, attempt);
events.emit('onRequestEnd', spec.op, res.statusCode, Date.now() - startedAt, attempt, undefined);
logger.debug(TAG, spec.op + ' done: HTTP ' + res.statusCode + ' after ' + attempt + ' attempt(s)');
return out;
}
throw fromHttpResponse(res.statusCode, res.text, { headers: res.header, idempotencyKey: spec.key, op: spec.op });
} catch (e) {
err = decorate(asYuguError(e), spec, attempt);
}
const cancelled = err.category === 'CANCELLED' || err.code === 90004;
if (!cancelled && spec.retryAllowed && attempt <= policy.maxRetries && isRetryable(err)) {
const delay = computeRetryDelay(attempt, policy, ctx.random, err.retryAfterMs);
if (Date.now() + delay <= deadline) {
logger.warn(TAG, 'retry ' + attempt + '/' + policy.maxRetries + ' in ' + delay + ' ms: ' + describeError(err));
events.emit('onRetry', spec.op, attempt, delay, err);
try {
await sleep(delay, spec.signal, spec.cancelError);
continue;
} catch (e2) {
err = decorate(asYuguError(e2), spec, attempt);
}
} else {
logger.warn(TAG, spec.op + ': no retry, the next attempt would pass the total timeout of ' + spec.totalTimeoutMs + ' ms');
}
}
events.emit('onRequestEnd', spec.op, err.httpStatus, Date.now() - startedAt, attempt, err);
logger.info(TAG, spec.op + ' failed after ' + attempt + ' attempt(s): ' + describeError(err) + ' ' + err.message);
throw err;
}
}
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