mirror of
https://github.com/hansjone/dsh-im-ops.git
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309 lines
9.7 KiB
JavaScript
309 lines
9.7 KiB
JavaScript
import { WeixinApiError } from './weixin-api.mjs';
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import { createWeixinBridgeStatus, WeixinHarnessBridge } from './weixin-bridge.mjs';
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import {
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connectionTestTarget,
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connectionTestTargetUnavailable,
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} from '../shared/connection-test.mjs';
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const DEFAULT_START_RETRY_DELAYS_MS = Object.freeze([250, 1_000, 3_000]);
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const HARNESS_HEALTH_ERROR_CODES = new Set([
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'harness-connect-failed',
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'harness-timeout',
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'harness-auth-required',
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'harness-proxy-auth-required',
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'harness-loopback-forbidden',
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'harness-host-untrusted',
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'harness-request-forbidden',
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'harness-api-not-found',
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'harness-http-failed',
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'harness-response-invalid',
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'harness-rpc-rejected',
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]);
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function startRetryDelays(value) {
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if (value === undefined) return [...DEFAULT_START_RETRY_DELAYS_MS];
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if (!Array.isArray(value)) throw new TypeError('startRetryDelaysMs must be an array');
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return value.map((wait) => {
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if (!Number.isFinite(wait) || wait < 0) {
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throw new TypeError('startRetryDelaysMs must contain non-negative delays');
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}
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return wait;
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});
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}
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function retryableStartError(error) {
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if (!(error instanceof WeixinApiError)) return false;
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if (error.code === 'network-error' || error.code === 'timeout') return true;
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return error.code === 'http-error'
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&& (error.status === 408 || error.status === 425 || error.status === 429 || error.status >= 500);
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}
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function runtimeStartError(code, cause) {
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const error = new Error(`Weixin runtime failed during ${code}`, { cause });
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error.name = 'WeixinRuntimeStartError';
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error.code = code;
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return error;
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}
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function harnessHealthError(cause) {
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const code = HARNESS_HEALTH_ERROR_CODES.has(cause?.code)
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? cause.code
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: 'harness-check-unknown-failed';
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return runtimeStartError(code, cause);
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}
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function delay(ms, signal) {
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return new Promise((resolve, reject) => {
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if (signal?.aborted) {
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reject(signal.reason ?? new DOMException('Aborted', 'AbortError'));
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return;
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}
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const finish = () => {
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signal?.removeEventListener('abort', onAbort);
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resolve();
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};
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const timer = setTimeout(finish, ms);
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const onAbort = () => {
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clearTimeout(timer);
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signal?.removeEventListener('abort', onAbort);
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reject(signal.reason ?? new DOMException('Aborted', 'AbortError'));
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};
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signal?.addEventListener('abort', onAbort, { once: true });
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});
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}
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export function createWeixinRuntimeStatus() {
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return {
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startedAt: null,
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ready: false,
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weixinConnectionState: 'idle',
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harnessReachable: false,
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lastCheckedAt: null,
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lastError: null,
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...createWeixinBridgeStatus(),
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};
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}
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export class WeixinRuntime {
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#api;
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#config;
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#token;
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#harness;
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#state;
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#logger;
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#replyTimeoutMs;
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#maxMessageChars;
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#startRetryDelaysMs;
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#status = createWeixinRuntimeStatus();
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#bridge = null;
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#abortController = null;
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#monitor = null;
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#starting = null;
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constructor({
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api,
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config,
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token,
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harness,
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state,
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logger = console,
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replyTimeoutMs = 600_000,
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maxMessageChars = 4_000,
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startRetryDelaysMs,
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}) {
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if (!api || !config || !token || !harness || !state) {
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throw new TypeError('WeixinRuntime requires API, account, token, Harness, and state');
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}
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this.#api = api;
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this.#config = config;
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this.#token = token;
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this.#harness = harness;
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this.#state = state;
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this.#logger = logger;
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this.#replyTimeoutMs = replyTimeoutMs;
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this.#maxMessageChars = maxMessageChars;
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this.#startRetryDelaysMs = startRetryDelays(startRetryDelaysMs);
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}
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get status() {
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return structuredClone(this.#status);
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}
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async start() {
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if (this.#status.ready && this.#monitor) return this.status;
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if (this.#starting) return this.#starting;
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this.#starting = this.#start().finally(() => {
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this.#starting = null;
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});
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return this.#starting;
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}
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async #start() {
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await this.stop();
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this.#status.startedAt = new Date().toISOString();
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this.#status.weixinConnectionState = 'connecting';
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this.#status.lastError = null;
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try {
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try {
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await this.#harness.ensureRunning();
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} catch (error) {
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throw harnessHealthError(error);
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}
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this.#status.harnessReachable = true;
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await this.#notifyStart();
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this.#abortController = new AbortController();
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const signal = this.#abortController.signal;
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this.#bridge = new WeixinHarnessBridge({
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api: this.#api,
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baseUrl: this.#config.baseUrl,
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token: this.#token,
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ownerUserId: this.#config.ownerUserId,
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harness: this.#harness,
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state: this.#state,
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status: this.#status,
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logger: this.#logger,
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replyTimeoutMs: this.#replyTimeoutMs,
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maxMessageChars: this.#maxMessageChars,
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signal,
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});
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this.#status.ready = true;
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this.#status.weixinConnectionState = 'connected';
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this.#status.lastCheckedAt = Date.now();
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this.#monitor = this.#runMonitor(signal).catch((error) => {
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if (signal.aborted) return;
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this.#status.ready = false;
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this.#status.weixinConnectionState = 'failed';
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this.#status.lastError = error?.message ?? String(error);
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this.#logger.error?.(`[dsh-weixin] account ${this.#config.botId} monitor stopped:`, error);
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});
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return this.status;
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} catch (error) {
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this.#abortController?.abort();
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this.#abortController = null;
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this.#bridge = null;
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this.#status.ready = false;
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this.#status.weixinConnectionState = 'failed';
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this.#status.lastError = error?.message ?? String(error);
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throw error;
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}
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}
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async #notifyStart() {
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for (let attempt = 0; ; attempt += 1) {
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try {
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return await this.#api.notifyStart({
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baseUrl: this.#config.baseUrl,
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token: this.#token,
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});
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} catch (error) {
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const wait = this.#startRetryDelaysMs[attempt];
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if (wait === undefined || !retryableStartError(error)) throw error;
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this.#logger.warn?.(
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`[dsh-weixin] account ${this.#config.botId} start request failed; retrying in ${wait}ms:`,
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error,
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);
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await delay(wait);
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}
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}
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}
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async #runMonitor(signal) {
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let consecutiveFailures = 0;
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while (!signal.aborted) {
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try {
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const response = await this.#api.getUpdates({
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baseUrl: this.#config.baseUrl,
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token: this.#token,
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getUpdatesBuf: this.#state.getUpdatesBuf(),
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signal,
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});
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if (signal.aborted) return;
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const rejected = (response?.ret !== undefined && response.ret !== 0)
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|| (response?.errcode !== undefined && response.errcode !== 0);
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if (rejected) {
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const code = response.errcode ?? response.ret;
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throw new WeixinApiError(
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code === -14 ? 'stale-token' : 'updates-rejected',
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code === -14 ? '微信登录凭据已失效，请移除账号后重新扫码。' : '微信消息同步请求被拒绝。',
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);
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}
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consecutiveFailures = 0;
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this.#status.ready = true;
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this.#status.weixinConnectionState = 'connected';
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this.#status.lastCheckedAt = Date.now();
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this.#status.lastError = null;
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for (const message of response?.msgs ?? []) {
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void this.#bridge.accept(message).catch((error) => {
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if (signal.aborted) return;
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this.#logger.error?.(
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`[dsh-weixin] account ${this.#config.botId} message handling failed:`,
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error,
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);
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});
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}
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if (typeof response?.get_updates_buf === 'string' && response.get_updates_buf) {
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await this.#state.setGetUpdatesBuf(response.get_updates_buf);
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}
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} catch (error) {
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if (signal.aborted) return;
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consecutiveFailures += 1;
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this.#status.lastError = error?.message ?? String(error);
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this.#logger.warn?.(
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`[dsh-weixin] account ${this.#config.botId} poll failed (${consecutiveFailures}/3):`,
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error,
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);
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if (error instanceof WeixinApiError && error.code === 'stale-token') throw error;
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if (consecutiveFailures >= 3) throw error;
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await delay(Math.min(2_000 * (2 ** (consecutiveFailures - 1)), 10_000), signal);
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}
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}
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}
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async stop() {
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const monitor = this.#monitor;
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const bridge = this.#bridge;
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const wasStarted = Boolean(this.#abortController || monitor || this.#status.ready);
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this.#abortController?.abort();
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this.#abortController = null;
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this.#monitor = null;
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await monitor?.catch(() => undefined);
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await bridge?.waitForIdle();
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this.#bridge = null;
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if (wasStarted) {
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try {
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await this.#api.notifyStop({
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baseUrl: this.#config.baseUrl,
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token: this.#token,
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signal: AbortSignal.timeout(10_000),
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});
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} catch (error) {
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this.#logger.warn?.(`[dsh-weixin] account ${this.#config.botId} stop notification failed:`, error);
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}
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}
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this.#status.ready = false;
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this.#status.weixinConnectionState = 'idle';
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return this.status;
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}
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async sendConnectionTest(text) {
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const remembered = connectionTestTarget(this.#state);
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const toUserId = typeof remembered?.toUserId === 'string' && remembered.toUserId.trim()
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? remembered.toUserId.trim()
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: typeof this.#config.ownerUserId === 'string' && this.#config.ownerUserId.trim()
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? this.#config.ownerUserId.trim()
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: null;
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if (!toUserId) throw connectionTestTargetUnavailable('微信机器人');
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if (!this.#status.ready || !this.#abortController) {
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throw new Error('Weixin runtime is not connected');
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}
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await this.#api.sendText({
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baseUrl: this.#config.baseUrl,
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token: this.#token,
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toUserId,
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text,
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signal: this.#abortController.signal,
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});
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return { sent: true };
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}
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}
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