Files
openclaw/extensions/telegram/src/webhook.ts

1094 lines
35 KiB
TypeScript

// Telegram plugin module implements webhook behavior.
import { createServer } from "node:http";
import type { IncomingMessage } from "node:http";
import net from "node:net";
import { InputFile } from "grammy";
import type { ChannelAccountSnapshot } from "openclaw/plugin-sdk/channel-contract";
import type { OpenClawConfig } from "openclaw/plugin-sdk/config-contracts";
import { isDiagnosticsEnabled } from "openclaw/plugin-sdk/diagnostic-runtime";
import {
logWebhookError,
logWebhookProcessed,
logWebhookReceived,
startDiagnosticHeartbeat,
stopDiagnosticHeartbeat,
} from "openclaw/plugin-sdk/logging-core";
import { parseStrictNonNegativeInteger } from "openclaw/plugin-sdk/number-runtime";
import type { BackoffPolicy, RuntimeEnv } from "openclaw/plugin-sdk/runtime-env";
import {
computeBackoff,
defaultRuntime,
formatDurationPrecise,
sleepWithAbort,
} from "openclaw/plugin-sdk/runtime-env";
import { safeEqualSecret } from "openclaw/plugin-sdk/security-runtime";
import { formatErrorMessage } from "openclaw/plugin-sdk/ssrf-runtime";
import { normalizeOptionalString } from "openclaw/plugin-sdk/string-coerce-runtime";
import {
applyBasicWebhookRequestGuards,
createFixedWindowRateLimiter,
WEBHOOK_RATE_LIMIT_DEFAULTS,
} from "openclaw/plugin-sdk/webhook-ingress";
import { readJsonBodyWithLimit } from "openclaw/plugin-sdk/webhook-request-guards";
import { mergeTelegramAccountConfig } from "./account-config.js";
import { resolveTelegramAllowedUpdates } from "./allowed-updates.js";
import { withTelegramApiErrorLogging } from "./api-logging.js";
import {
runWithTelegramSpooledReplayUpdate,
type TelegramMessageProcessingResult,
type TelegramSpooledReplayDeferredParticipant,
} from "./bot-processing-outcome.js";
import { createTelegramBot } from "./bot.js";
import { resolveTelegramTransport } from "./fetch.js";
import { isRetryableTelegramApiError } from "./network-errors.js";
import { getTelegramSequentialKey } from "./sequential-key.js";
import {
resolveNonRetryableSpooledUpdateFailure,
resolveSpooledUpdateAttemptNumber,
resolveSpooledUpdateRetryDelayMs,
shouldDeadLetterRetryableSpooledUpdate,
TELEGRAM_SPOOLED_RETRY_MAX_ATTEMPTS,
} from "./spooled-update-retry-policy.js";
import {
claimNextTelegramSpooledUpdate,
completeTelegramSpooledUpdate,
failTelegramSpooledUpdateClaim,
isTelegramSpooledUpdateClaimOwnedByOtherLiveProcess,
listTelegramSpooledUpdateClaims,
listTelegramSpooledUpdates,
recoverStaleTelegramSpooledUpdateClaims,
refreshTelegramSpooledUpdateClaim,
releaseTelegramSpooledUpdateClaim,
resolveTelegramIngressSpoolDir,
TELEGRAM_SPOOLED_UPDATE_CLAIM_LEASE_MS,
writeTelegramSpooledUpdate,
type ClaimedTelegramSpooledUpdate,
} from "./telegram-ingress-spool.js";
import {
buildTelegramReplyFenceLaneKey,
supersedeTelegramReplyFenceLane,
} from "./telegram-reply-fence.js";
import { createTelegramWebhookStatusPublisher } from "./webhook-status.js";
const TELEGRAM_WEBHOOK_MAX_BODY_BYTES = 1024 * 1024;
const TELEGRAM_WEBHOOK_BODY_TIMEOUT_MS = 30_000;
const TELEGRAM_WEBHOOK_SPOOLED_DRAIN_INTERVAL_MS = 500;
const TELEGRAM_WEBHOOK_SPOOLED_CLAIM_REFRESH_INTERVAL_MS = 5 * 60 * 1000;
const TELEGRAM_WEBHOOK_SPOOLED_HANDLER_TIMEOUT_MS = 25 * 60_000;
const TELEGRAM_WEBHOOK_SPOOLED_HANDLER_ABORT_GRACE_MS = 5_000;
const TELEGRAM_WEBHOOK_SPOOLED_DRAIN_START_LIMIT = 100;
const TELEGRAM_WEBHOOK_SPOOLED_DRAIN_SCAN_LIMIT = TELEGRAM_WEBHOOK_SPOOLED_DRAIN_START_LIMIT * 10;
const TELEGRAM_WEBHOOK_REGISTRATION_RETRY_POLICY: BackoffPolicy = {
initialMs: 5_000,
maxMs: 60_000,
factor: 2,
jitter: 0.2,
};
type ActiveWebhookSpooledHandler = {
laneKey: string;
};
const activeWebhookSpooledHandlersByLane = new Map<string, ActiveWebhookSpooledHandler>();
function buildWebhookSpooledHandlerKey(params: { laneKey: string; spoolDir: string }): string {
return `${params.spoolDir}\0${params.laneKey}`;
}
function resolveActiveWebhookSpooledLaneKeys(spoolDir: string): Set<string> {
const laneKeys = new Set<string>();
const prefix = `${spoolDir}\0`;
for (const [handlerKey, handler] of activeWebhookSpooledHandlersByLane) {
if (handlerKey.startsWith(prefix)) {
laneKeys.add(handler.laneKey);
}
}
return laneKeys;
}
async function listenHttpServer(params: {
server: ReturnType<typeof createServer>;
port: number;
host: string;
}) {
await new Promise<void>((resolve, reject) => {
const onError = (err: Error) => {
params.server.off("error", onError);
reject(err);
};
params.server.once("error", onError);
params.server.listen(params.port, params.host, () => {
params.server.off("error", onError);
resolve();
});
});
}
function resolveWebhookPublicUrl(params: {
configuredPublicUrl?: string;
server: ReturnType<typeof createServer>;
path: string;
host: string;
port: number;
}) {
if (params.configuredPublicUrl) {
return params.configuredPublicUrl;
}
const address = params.server.address();
if (address && typeof address !== "string") {
const resolvedHost =
params.host === "0.0.0.0" || address.address === "0.0.0.0" || address.address === "::"
? "localhost"
: address.address;
return `http://${resolvedHost}:${address.port}${params.path}`;
}
const fallbackHost = params.host === "0.0.0.0" ? "localhost" : params.host;
return `http://${fallbackHost}:${params.port}${params.path}`;
}
async function initializeTelegramWebhookBotOnce(params: {
bot: ReturnType<typeof createTelegramBot>;
runtime: RuntimeEnv;
abortSignal?: AbortSignal;
}) {
const initSignal = params.abortSignal as Parameters<(typeof params.bot)["init"]>[0];
await withTelegramApiErrorLogging({
operation: "getMe",
runtime: params.runtime,
fn: () => params.bot.init(initSignal),
});
}
async function initializeTelegramWebhookBot(params: {
abortSignal?: AbortSignal;
bot: ReturnType<typeof createTelegramBot>;
retryPolicy: BackoffPolicy;
runtime: RuntimeEnv;
}) {
let attempt = 0;
while (true) {
try {
await initializeTelegramWebhookBotOnce({
bot: params.bot,
runtime: params.runtime,
abortSignal: params.abortSignal,
});
return;
} catch (err) {
if (
!isRetryableTelegramApiError(err, { context: "webhook" }) ||
params.abortSignal?.aborted
) {
throw err;
}
attempt += 1;
const delayMs = computeBackoff(params.retryPolicy, attempt);
params.runtime.log?.(
`telegram getMe retry ${attempt} scheduled in ${formatDurationPrecise(delayMs)}`,
);
await sleepWithAbort(delayMs, params.abortSignal);
}
}
}
function resolveSingleHeaderValue(header: string | string[] | undefined): string | undefined {
if (typeof header === "string") {
return header;
}
if (Array.isArray(header) && header.length === 1) {
return header[0];
}
return undefined;
}
function hasValidTelegramWebhookSecret(
secretHeader: string | undefined,
expectedSecret: string,
): boolean {
return safeEqualSecret(secretHeader, expectedSecret);
}
function parseIpLiteral(value: string | undefined): string | undefined {
const trimmed = normalizeOptionalString(value);
if (!trimmed) {
return undefined;
}
if (trimmed.startsWith("[")) {
const end = trimmed.indexOf("]");
if (end !== -1) {
const candidate = trimmed.slice(1, end);
return net.isIP(candidate) === 0 ? undefined : candidate;
}
}
if (net.isIP(trimmed) !== 0) {
return trimmed;
}
const lastColon = trimmed.lastIndexOf(":");
if (lastColon > -1 && trimmed.includes(".") && trimmed.indexOf(":") === lastColon) {
const candidate = trimmed.slice(0, lastColon);
return net.isIP(candidate) === 4 ? candidate : undefined;
}
return undefined;
}
function isTrustedProxyAddress(
ip: string | undefined,
trustedProxies?: readonly string[],
): boolean {
const candidate = parseIpLiteral(ip);
if (!candidate || !trustedProxies?.length) {
return false;
}
const blockList = new net.BlockList();
for (const proxy of trustedProxies) {
const trimmed = normalizeOptionalString(proxy) ?? "";
if (!trimmed) {
continue;
}
if (trimmed.includes("/")) {
const [address, prefix] = trimmed.split("/", 2);
const parsedPrefix = parseStrictNonNegativeInteger(prefix);
const family = net.isIP(address);
if (family === 4 && parsedPrefix !== undefined && parsedPrefix >= 0 && parsedPrefix <= 32) {
blockList.addSubnet(address, parsedPrefix, "ipv4");
}
if (family === 6 && parsedPrefix !== undefined && parsedPrefix >= 0 && parsedPrefix <= 128) {
blockList.addSubnet(address, parsedPrefix, "ipv6");
}
continue;
}
if (net.isIP(trimmed) === 4) {
blockList.addAddress(trimmed, "ipv4");
continue;
}
if (net.isIP(trimmed) === 6) {
blockList.addAddress(trimmed, "ipv6");
}
}
return blockList.check(candidate, net.isIP(candidate) === 6 ? "ipv6" : "ipv4");
}
function resolveForwardedClientIp(
forwardedFor: string | undefined,
trustedProxies?: readonly string[],
): string | undefined {
if (!trustedProxies?.length) {
return undefined;
}
const forwardedChain = forwardedFor
?.split(",")
.map((entry) => parseIpLiteral(entry))
.filter((entry): entry is string => Boolean(entry));
if (!forwardedChain?.length) {
return undefined;
}
for (let index = forwardedChain.length - 1; index >= 0; index -= 1) {
const hop = forwardedChain[index];
if (!isTrustedProxyAddress(hop, trustedProxies)) {
return hop;
}
}
return undefined;
}
function resolveTelegramWebhookClientIp(req: IncomingMessage, config?: OpenClawConfig): string {
const remoteAddress = parseIpLiteral(req.socket.remoteAddress);
const trustedProxies = config?.gateway?.trustedProxies;
if (!remoteAddress) {
return "unknown";
}
if (!isTrustedProxyAddress(remoteAddress, trustedProxies)) {
return remoteAddress;
}
const forwardedFor = Array.isArray(req.headers["x-forwarded-for"])
? req.headers["x-forwarded-for"][0]
: req.headers["x-forwarded-for"];
const forwardedClientIp = resolveForwardedClientIp(forwardedFor, trustedProxies);
if (forwardedClientIp) {
return forwardedClientIp;
}
if (config?.gateway?.allowRealIpFallback === true) {
const realIp = Array.isArray(req.headers["x-real-ip"])
? req.headers["x-real-ip"][0]
: req.headers["x-real-ip"];
return parseIpLiteral(realIp) ?? "unknown";
}
return "unknown";
}
function resolveTelegramWebhookRateLimitKey(
req: IncomingMessage,
path: string,
config?: OpenClawConfig,
): string {
return `${path}:${resolveTelegramWebhookClientIp(req, config)}`;
}
function resolveWebhookSpooledUpdateLaneKey(update: unknown): string {
return getTelegramSequentialKey({
update: update as Parameters<typeof getTelegramSequentialKey>[0]["update"],
});
}
async function releaseFailedWebhookSpooledUpdate(params: {
err: unknown;
log: (line: string) => void;
update: ClaimedTelegramSpooledUpdate;
}): Promise<void> {
const laneKey = resolveWebhookSpooledUpdateLaneKey(params.update.update);
const nonRetryable = resolveNonRetryableSpooledUpdateFailure(params.err);
if (nonRetryable) {
const failed = await failTelegramSpooledUpdateClaim({
update: params.update,
reason: nonRetryable.reason,
message: nonRetryable.message,
});
if (failed) {
params.log(
`[telegram][diag] webhook spooled update ${params.update.updateId} failed with non-retryable ${nonRetryable.reason}; dead-lettered: ${nonRetryable.message}`,
);
}
return;
}
const attempt = resolveSpooledUpdateAttemptNumber(params.update);
if (shouldDeadLetterRetryableSpooledUpdate(params.update, attempt)) {
const message = formatErrorMessage(params.err);
const failed = await failTelegramSpooledUpdateClaim({
update: params.update,
reason: "retry-limit-exceeded",
message,
});
if (failed) {
// Retryable poison updates must eventually become tombstones, but not
// during ordinary transient provider or state-store outages.
params.log(
`[telegram][warn] webhook spooled update ${params.update.updateId} on lane ${laneKey} reached retry limit after ${attempt} attempts; dead-lettered: ${message}`,
);
}
return;
}
await releaseTelegramSpooledUpdateClaim(params.update, {
lastError: formatErrorMessage(params.err),
});
params.log(
`[telegram][diag] webhook spooled update ${params.update.updateId} failed; keeping for retry attempt ${attempt + 1}/${TELEGRAM_SPOOLED_RETRY_MAX_ATTEMPTS}: ${formatErrorMessage(params.err)}`,
);
}
function startWebhookSpooledUpdateClaimRefresh(params: {
log: (line: string) => void;
update: ClaimedTelegramSpooledUpdate;
}): () => void {
let stopped = false;
let refreshing = false;
const refresh = async (): Promise<void> => {
if (stopped || refreshing) {
return;
}
refreshing = true;
try {
const refreshed = await refreshTelegramSpooledUpdateClaim(params.update);
if (!refreshed && !stopped) {
params.log(
`[telegram][diag] webhook spooled update ${params.update.updateId} claim refresh lost ownership`,
);
}
} catch (err) {
params.log(
`[telegram][diag] webhook spooled update ${params.update.updateId} claim refresh failed: ${formatErrorMessage(err)}`,
);
} finally {
refreshing = false;
}
};
const timer = setInterval(() => {
void refresh();
}, TELEGRAM_WEBHOOK_SPOOLED_CLAIM_REFRESH_INTERVAL_MS);
timer.unref?.();
return () => {
if (stopped) {
return;
}
stopped = true;
clearInterval(timer);
};
}
type WebhookSpooledDeferredWorkResult = TelegramMessageProcessingResult & {
timedOut?: boolean;
};
class WebhookSpooledHandlerTimeoutError extends Error {
constructor(
message: string,
readonly replayTask: Promise<{ deferredWork?: TelegramSpooledReplayDeferredParticipant }>,
) {
super(message);
this.name = "WebhookSpooledHandlerTimeoutError";
}
}
function formatWebhookSpooledHandlerTimeoutMessage(params: {
laneKey: string;
updateId: number;
}): string {
const age = formatDurationPrecise(TELEGRAM_WEBHOOK_SPOOLED_HANDLER_TIMEOUT_MS);
return `Telegram webhook spool processing timed out behind update ${params.updateId} on lane ${params.laneKey} after ${age}; marking the update failed.`;
}
async function failTimedOutWebhookSpooledUpdate(params: {
log: (line: string) => void;
message: string;
update: ClaimedTelegramSpooledUpdate;
}): Promise<void> {
const failed = await failTelegramSpooledUpdateClaim({
update: params.update,
reason: "handler-timeout",
message: params.message,
});
if (!failed) {
params.log(
`[telegram][diag] timed out webhook spooled update ${params.update.updateId} no longer had a processing marker to fail.`,
);
}
}
async function waitForTimedOutWebhookReplayGrace(params: {
log: (line: string) => void;
replayTask: Promise<{ deferredWork?: TelegramSpooledReplayDeferredParticipant }>;
updateId: number;
}): Promise<boolean> {
let timer: ReturnType<typeof setTimeout> | undefined;
try {
return await Promise.race([
params.replayTask.then(
() => true,
(replayErr: unknown) => {
params.log(
`[telegram][diag] timed out webhook spooled update ${params.updateId} replay later failed: ${formatErrorMessage(replayErr)}`,
);
return true;
},
),
new Promise<boolean>((resolve) => {
timer = setTimeout(() => resolve(false), TELEGRAM_WEBHOOK_SPOOLED_HANDLER_ABORT_GRACE_MS);
timer.unref?.();
}),
]);
} finally {
if (timer) {
clearTimeout(timer);
}
}
}
type WebhookSpooledUpdateHandlerResult = {
retainLaneGuardTask?: Promise<unknown>;
};
async function runWebhookSpooledReplayWithTimeout(params: {
bot: ReturnType<typeof createTelegramBot>;
laneKey: string;
rawUpdate: object;
update: Parameters<ReturnType<typeof createTelegramBot>["handleUpdate"]>[0];
updateId: number;
}): Promise<{ deferredWork?: TelegramSpooledReplayDeferredParticipant }> {
let timer: ReturnType<typeof setTimeout> | undefined;
const replayTask = runWithTelegramSpooledReplayUpdate(params.rawUpdate, async () => {
await params.bot.handleUpdate(params.update);
});
replayTask.catch(() => undefined);
const timeout = new Promise<never>((_resolve, reject) => {
timer = setTimeout(() => {
reject(
new WebhookSpooledHandlerTimeoutError(
formatWebhookSpooledHandlerTimeoutMessage({
laneKey: params.laneKey,
updateId: params.updateId,
}),
replayTask,
),
);
}, TELEGRAM_WEBHOOK_SPOOLED_HANDLER_TIMEOUT_MS);
timer.unref?.();
});
try {
return await Promise.race([replayTask, timeout]);
} finally {
if (timer) {
clearTimeout(timer);
}
}
}
async function waitForWebhookSpooledDeferredWork(params: {
deferredWork: TelegramSpooledReplayDeferredParticipant;
laneKey: string;
log: (line: string) => void;
update: ClaimedTelegramSpooledUpdate;
}): Promise<WebhookSpooledDeferredWorkResult> {
let timer: ReturnType<typeof setTimeout> | undefined;
const timeout = new Promise<WebhookSpooledDeferredWorkResult>((resolve) => {
timer = setTimeout(() => {
const age = formatDurationPrecise(TELEGRAM_WEBHOOK_SPOOLED_HANDLER_TIMEOUT_MS);
const message = `Telegram webhook spool buffered processing timed out behind update ${params.update.updateId} on lane ${params.laneKey} after ${age}; marking the update failed.`;
params.log(`[telegram] ${message}`);
params.deferredWork.settle({
kind: "failed-retryable",
error: new Error(message),
});
resolve({ kind: "failed-retryable", error: new Error(message), timedOut: true });
}, TELEGRAM_WEBHOOK_SPOOLED_HANDLER_TIMEOUT_MS);
timer.unref?.();
});
try {
return await Promise.race([
params.deferredWork.task.catch((err: unknown): TelegramMessageProcessingResult => {
return { kind: "failed-retryable", error: err };
}),
timeout,
]);
} finally {
if (timer) {
clearTimeout(timer);
}
}
}
async function handleWebhookSpooledUpdate(params: {
accountId: string;
bot: ReturnType<typeof createTelegramBot>;
log: (line: string) => void;
update: ClaimedTelegramSpooledUpdate;
}): Promise<WebhookSpooledUpdateHandlerResult> {
let replay: { deferredWork?: TelegramSpooledReplayDeferredParticipant };
try {
const rawUpdate = params.update.update;
if (!rawUpdate || typeof rawUpdate !== "object") {
throw new Error("Telegram spooled webhook update payload was invalid.");
}
const laneKey = resolveWebhookSpooledUpdateLaneKey(rawUpdate);
const update = rawUpdate as Parameters<typeof params.bot.handleUpdate>[0];
replay = await runWebhookSpooledReplayWithTimeout({
bot: params.bot,
laneKey,
rawUpdate,
update,
updateId: params.update.updateId,
});
} catch (err) {
if (err instanceof WebhookSpooledHandlerTimeoutError) {
params.log(`[telegram] ${err.message}`);
const scopedReplyFenceLaneKey = buildTelegramReplyFenceLaneKey({
accountId: params.accountId,
sequentialKey: resolveWebhookSpooledUpdateLaneKey(params.update.update),
});
const abortedReplyWork = supersedeTelegramReplyFenceLane(scopedReplyFenceLaneKey);
if (!abortedReplyWork) {
params.log(
`[telegram][diag] timed out webhook spooled update ${params.update.updateId} had no active reply fence on lane ${scopedReplyFenceLaneKey}.`,
);
}
await failTimedOutWebhookSpooledUpdate({
log: params.log,
message: err.message,
update: params.update,
});
const replaySettled = await waitForTimedOutWebhookReplayGrace({
log: params.log,
replayTask: err.replayTask,
updateId: params.update.updateId,
});
if (replaySettled) {
return {};
}
return {
retainLaneGuardTask: err.replayTask.catch((replayErr: unknown) => {
params.log(
`[telegram][diag] timed out webhook spooled update ${params.update.updateId} replay later failed: ${formatErrorMessage(replayErr)}`,
);
}),
};
}
await releaseFailedWebhookSpooledUpdate({
err,
log: params.log,
update: params.update,
});
return {};
}
if (replay.deferredWork) {
const result = await waitForWebhookSpooledDeferredWork({
deferredWork: replay.deferredWork,
laneKey: resolveWebhookSpooledUpdateLaneKey(params.update.update),
log: params.log,
update: params.update,
});
if (result.kind === "failed-retryable") {
if (result.timedOut) {
await failTimedOutWebhookSpooledUpdate({
log: params.log,
message: formatErrorMessage(result.error),
update: params.update,
});
return {};
}
await releaseFailedWebhookSpooledUpdate({
err: result.error,
log: params.log,
update: params.update,
});
return {};
}
}
try {
await completeTelegramSpooledUpdate(params.update);
} catch (err) {
params.log(
`[telegram][diag] webhook spooled update ${params.update.updateId} completed but processing marker cleanup failed: ${formatErrorMessage(err)}`,
);
}
return {};
}
export async function startTelegramWebhook(opts: {
token: string;
accountId?: string;
config?: OpenClawConfig;
path?: string;
port?: number;
host?: string;
secret?: string;
runtime?: RuntimeEnv;
fetch?: typeof fetch;
abortSignal?: AbortSignal;
healthPath?: string;
publicUrl?: string;
webhookCertPath?: string;
webhookRegistrationRetryPolicy?: BackoffPolicy;
spoolDir?: string;
setStatus?: (patch: Omit<ChannelAccountSnapshot, "accountId">) => void;
}) {
const path = opts.path ?? "/telegram-webhook";
const healthPath = opts.healthPath ?? "/healthz";
const port = opts.port ?? 8787;
const host = opts.host ?? "127.0.0.1";
const secret = normalizeOptionalString(opts.secret) ?? "";
if (!secret) {
throw new Error(
"Telegram webhook mode requires a non-empty secret token. " +
"Set channels.telegram.webhookSecret in your config.",
);
}
const runtime = opts.runtime ?? defaultRuntime;
const status = createTelegramWebhookStatusPublisher(opts.setStatus);
status.noteWebhookStart();
const webhookRegistrationRetryPolicy =
opts.webhookRegistrationRetryPolicy ?? TELEGRAM_WEBHOOK_REGISTRATION_RETRY_POLICY;
const diagnosticsEnabled = isDiagnosticsEnabled(opts.config);
const spoolDir = opts.spoolDir ?? resolveTelegramIngressSpoolDir({ accountId: opts.accountId });
let shutDown = false;
const telegramAccountConfig = opts.config
? mergeTelegramAccountConfig(opts.config, opts.accountId ?? "default")
: undefined;
const telegramTransport = resolveTelegramTransport(opts.fetch, {
network: telegramAccountConfig?.network,
});
let closeTransportPromise: Promise<void> | undefined;
const closeTransportOnce = (): Promise<void> => {
closeTransportPromise ??= telegramTransport.close();
return closeTransportPromise;
};
const bot = createTelegramBot({
token: opts.token,
runtime,
proxyFetch: opts.fetch,
config: opts.config,
accountId: opts.accountId,
telegramTransport,
});
try {
await initializeTelegramWebhookBot({
bot,
runtime,
abortSignal: opts.abortSignal,
retryPolicy: webhookRegistrationRetryPolicy,
});
} catch (err) {
await bot.stop();
await closeTransportOnce();
throw err;
}
const telegramWebhookRateLimiter = createFixedWindowRateLimiter({
windowMs: WEBHOOK_RATE_LIMIT_DEFAULTS.windowMs,
maxRequests: WEBHOOK_RATE_LIMIT_DEFAULTS.maxRequests,
maxTrackedKeys: WEBHOOK_RATE_LIMIT_DEFAULTS.maxTrackedKeys,
});
if (diagnosticsEnabled) {
startDiagnosticHeartbeat(opts.config);
}
const log = (line: string) => runtime.log?.(line);
let drainActive = false;
let drainRequested = false;
const drainWebhookSpool = async (): Promise<void> => {
if (shutDown || opts.abortSignal?.aborted) {
return;
}
if (drainActive) {
drainRequested = true;
return;
}
drainActive = true;
drainRequested = false;
try {
const activeWebhookSpooledLaneKeys = resolveActiveWebhookSpooledLaneKeys(spoolDir);
await recoverStaleTelegramSpooledUpdateClaims({
spoolDir,
staleMs: 0,
shouldRecover: (claim) =>
!activeWebhookSpooledLaneKeys.has(resolveWebhookSpooledUpdateLaneKey(claim.update)) &&
!isTelegramSpooledUpdateClaimOwnedByOtherLiveProcess(claim, {
maxAgeMs: TELEGRAM_SPOOLED_UPDATE_CLAIM_LEASE_MS,
}),
});
const claimedLaneKeys = new Set(
(
await listTelegramSpooledUpdateClaims({
spoolDir,
})
).map((claim) => resolveWebhookSpooledUpdateLaneKey(claim.update)),
);
const updates = await listTelegramSpooledUpdates({
spoolDir,
limit: TELEGRAM_WEBHOOK_SPOOLED_DRAIN_SCAN_LIMIT,
});
const candidateUpdateIds = updates.map((update) => update.updateId);
const blockedLaneKeys = new Set([...activeWebhookSpooledLaneKeys, ...claimedLaneKeys]);
for (const update of updates) {
// Release stamps lastAttemptAt; block the lane until backoff expires so
// webhook replay cannot hot-loop a retryable poison update.
if (resolveSpooledUpdateRetryDelayMs(update) > 0) {
blockedLaneKeys.add(resolveWebhookSpooledUpdateLaneKey(update.update));
}
}
let started = 0;
while (started < TELEGRAM_WEBHOOK_SPOOLED_DRAIN_START_LIMIT) {
if (shutDown || opts.abortSignal?.aborted) {
break;
}
const claimedUpdate = await claimNextTelegramSpooledUpdate({
spoolDir,
blockedLaneKeys,
candidateUpdateIds,
scanLimit: TELEGRAM_WEBHOOK_SPOOLED_DRAIN_SCAN_LIMIT,
});
if (!claimedUpdate) {
break;
}
const laneKey = resolveWebhookSpooledUpdateLaneKey(claimedUpdate.update);
const handlerKey = buildWebhookSpooledHandlerKey({ spoolDir, laneKey });
// Webhook HTTP requests and same-process restarts can overlap; keep
// one process-global active claim per spool lane to preserve ordering.
const handlerState: ActiveWebhookSpooledHandler = { laneKey };
activeWebhookSpooledHandlersByLane.set(handlerKey, handlerState);
blockedLaneKeys.add(laneKey);
// Claim ownership has a finite lease; refresh while the handler runs so
// another process cannot recover and replay this update concurrently.
const stopClaimRefresh = startWebhookSpooledUpdateClaimRefresh({
log,
update: claimedUpdate,
});
let retainLaneGuardTask: Promise<unknown> | undefined;
void handleWebhookSpooledUpdate({
accountId: opts.accountId ?? "default",
bot,
log,
update: claimedUpdate,
})
.then((result) => {
retainLaneGuardTask = result.retainLaneGuardTask;
if (retainLaneGuardTask) {
void retainLaneGuardTask.finally(() => {
if (activeWebhookSpooledHandlersByLane.get(handlerKey) === handlerState) {
activeWebhookSpooledHandlersByLane.delete(handlerKey);
}
void Promise.resolve().then(drainWebhookSpool);
});
}
})
.catch((err: unknown) => {
runtime.log?.(
`[telegram][diag] webhook spooled update ${claimedUpdate.updateId} handler failed after claim: ${formatErrorMessage(err)}`,
);
})
.finally(() => {
stopClaimRefresh();
if (
!retainLaneGuardTask &&
activeWebhookSpooledHandlersByLane.get(handlerKey) === handlerState
) {
activeWebhookSpooledHandlersByLane.delete(handlerKey);
}
void Promise.resolve().then(drainWebhookSpool);
});
started += 1;
}
} catch (err) {
runtime.log?.(`[telegram][diag] webhook spool drain failed: ${formatErrorMessage(err)}`);
} finally {
drainActive = false;
if (drainRequested && !shutDown && !opts.abortSignal?.aborted) {
void Promise.resolve().then(drainWebhookSpool);
}
}
};
const requestWebhookSpoolDrain = () => {
void drainWebhookSpool();
};
let drainTimer: ReturnType<typeof setInterval> | undefined;
const startWebhookSpoolDrain = () => {
if (drainTimer) {
return;
}
requestWebhookSpoolDrain();
drainTimer = setInterval(requestWebhookSpoolDrain, TELEGRAM_WEBHOOK_SPOOLED_DRAIN_INTERVAL_MS);
drainTimer.unref?.();
};
const server = createServer((req, res) => {
const respondText = (statusCode: number, text = "") => {
if (res.headersSent || res.writableEnded) {
return;
}
res.writeHead(statusCode, { "Content-Type": "text/plain; charset=utf-8" });
res.end(text);
};
if (req.url === healthPath) {
res.writeHead(200);
res.end("ok");
return;
}
if (req.url !== path || req.method !== "POST") {
res.writeHead(404);
res.end();
return;
}
const startTime = Date.now();
if (diagnosticsEnabled) {
logWebhookReceived({ channel: "telegram", updateType: "telegram-post" });
}
const secretHeader = resolveSingleHeaderValue(req.headers["x-telegram-bot-api-secret-token"]);
if (!hasValidTelegramWebhookSecret(secretHeader, secret)) {
// Authenticated Telegram delivery must not consume the abuse budget. Only
// failed secret guesses are rate-limited, before the body is read.
if (
!applyBasicWebhookRequestGuards({
req,
res,
rateLimiter: telegramWebhookRateLimiter,
rateLimitKey: resolveTelegramWebhookRateLimitKey(req, path, opts.config),
})
) {
return;
}
res.shouldKeepAlive = false;
res.setHeader("Connection", "close");
respondText(401, "unauthorized");
return;
}
void (async () => {
const body = await readJsonBodyWithLimit(req, {
maxBytes: TELEGRAM_WEBHOOK_MAX_BODY_BYTES,
timeoutMs: TELEGRAM_WEBHOOK_BODY_TIMEOUT_MS,
emptyObjectOnEmpty: false,
});
if (!body.ok) {
if (body.code === "PAYLOAD_TOO_LARGE") {
respondText(413, body.error);
return;
}
if (body.code === "REQUEST_BODY_TIMEOUT") {
respondText(408, body.error);
return;
}
if (body.code === "CONNECTION_CLOSED") {
respondText(400, body.error);
return;
}
respondText(400, body.error);
return;
}
// Telegram sees 200 only after the update is durable. If SQLite rejects
// the enqueue, this path returns non-200 so Telegram redelivers.
await writeTelegramSpooledUpdate({
spoolDir,
update: body.value,
laneKey: resolveWebhookSpooledUpdateLaneKey(body.value),
});
// Enqueue duplicate detection makes Telegram webhook retries idempotent:
// re-posted update_ids map to the same spool row and still ack fast.
respondText(200);
status.noteWebhookUpdateReceived();
requestWebhookSpoolDrain();
if (diagnosticsEnabled) {
logWebhookProcessed({
channel: "telegram",
updateType: "telegram-post",
durationMs: Date.now() - startTime,
});
}
})().catch((err: unknown) => {
const errMsg = formatErrorMessage(err);
if (diagnosticsEnabled) {
logWebhookError({
channel: "telegram",
updateType: "telegram-post",
error: errMsg,
});
}
runtime.log?.(`webhook request failed: ${errMsg}`);
respondText(500);
});
});
await listenHttpServer({
server,
port,
host,
});
const boundAddress = server.address();
const boundPort = boundAddress && typeof boundAddress !== "string" ? boundAddress.port : port;
const publicUrl = resolveWebhookPublicUrl({
configuredPublicUrl: opts.publicUrl,
server,
path,
host,
port,
});
let webhookAdvertised = false;
const shutdown = async () => {
if (shutDown) {
return;
}
shutDown = true;
if (drainTimer) {
clearInterval(drainTimer);
}
server.close();
await bot.stop();
// The webhook owns this transport because it resolved and injected it into
// createTelegramBot; close once so abort/startup-failure paths cannot leak sockets.
await closeTransportOnce();
status.noteWebhookStop();
if (diagnosticsEnabled) {
stopDiagnosticHeartbeat();
}
};
if (opts.abortSignal?.aborted) {
void shutdown();
} else if (opts.abortSignal) {
opts.abortSignal.addEventListener("abort", () => void shutdown(), { once: true });
}
const advertiseWebhook = async (): Promise<void> => {
if (shutDown || opts.abortSignal?.aborted) {
return;
}
try {
await withTelegramApiErrorLogging({
operation: "setWebhook",
runtime,
fn: () =>
bot.api.setWebhook(publicUrl, {
secret_token: secret,
allowed_updates: resolveTelegramAllowedUpdates(),
certificate: opts.webhookCertPath ? new InputFile(opts.webhookCertPath) : undefined,
}),
});
} catch (err) {
status.noteWebhookRegistrationFailure(formatErrorMessage(err));
throw err;
}
if (shutDown) {
return;
}
webhookAdvertised = true;
status.noteWebhookAdvertised();
runtime.log?.(`webhook advertised to telegram on ${publicUrl}`);
};
const shouldRetryWebhookRegistration = (err: unknown): boolean =>
isRetryableTelegramApiError(err, { context: "webhook" });
const retryWebhookRegistration = async (firstAttempt: number): Promise<void> => {
let attempt = firstAttempt;
while (true) {
if (shutDown || opts.abortSignal?.aborted || webhookAdvertised) {
return;
}
const delayMs = computeBackoff(webhookRegistrationRetryPolicy, attempt);
runtime.log?.(
`telegram setWebhook retry ${attempt} scheduled in ${formatDurationPrecise(delayMs)}`,
);
try {
await sleepWithAbort(delayMs, opts.abortSignal);
} catch {
return;
}
if (shutDown || opts.abortSignal?.aborted || webhookAdvertised) {
return;
}
try {
await advertiseWebhook();
return;
} catch (err) {
if (!shouldRetryWebhookRegistration(err)) {
runtime.error?.(
`telegram setWebhook retry stopped after non-recoverable error: ${formatErrorMessage(err)}`,
);
return;
}
}
attempt += 1;
}
};
const closeAfterStartupFailure = async () => {
shutDown = true;
if (drainTimer) {
clearInterval(drainTimer);
}
server.close();
await bot.stop();
await closeTransportOnce();
status.noteWebhookStop();
if (diagnosticsEnabled) {
stopDiagnosticHeartbeat();
}
};
runtime.log?.(`webhook local listener on http://${host}:${boundPort}${path}`);
if (!shutDown) {
try {
await advertiseWebhook();
} catch (err) {
if (!shouldRetryWebhookRegistration(err)) {
await closeAfterStartupFailure();
throw err;
}
void retryWebhookRegistration(1);
}
}
// Drain only after registration succeeds or after the retrying startup path
// is ready to return a stop handle; failed startup must not claim durable work.
if (!shutDown) {
startWebhookSpoolDrain();
}
return { server, bot, stop: shutdown };
}