Xendit webhook: metadata.app routing + survival audit log + rolling fallback file

Every Xendit invoice now carries metadata: { app: 'halobestie_v2' } so an
external webhook router (no DB access) can fan out v1/v2 traffic purely off
the echoed payload.

Every inbound webhook lands in a new webhook_logs table BEFORE auth or
business logic, so a forensic row survives 401/409/unknown/exception paths.
Primary fields are parsed as columns; raw_body keeps the full payload
verbatim. The handler captures outcome in closure-scoped vars and stamps
http_status/processing_result/processing_error in a single update before
the lone reply.send() — Fastify flushes reply.send() immediately, which
defeated the original finally-block stamp.

A non-UUID external_id no longer crashes the Postgres cast; it ACKs with
ignored_non_uuid_external_id so Xendit stops retrying legacy old-app IDs.

When the DB log itself fails, an optional rolling JSONL file sink absorbs
the event. Disabled by default — opt in via XENDIT_WEBHOOK_FALLBACK_ENABLED.
Naming: <NAME>-YYYY-MM-DD.jsonl in XENDIT_WEBHOOK_FALLBACK_DIR (default
./logs), basename XENDIT_WEBHOOK_FALLBACK_NAME (default
xendit-webhook-fallback). No stdout fallback by design.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-05-25 22:09:14 +08:00
parent 553dbac52f
commit 3052f7b799
8 changed files with 783 additions and 63 deletions

View File

@@ -71,3 +71,17 @@ XENDIT_SECRET_KEY=
XENDIT_WEBHOOK_TOKEN=
XENDIT_SUCCESS_REDIRECT_URL=
XENDIT_FAILURE_REDIRECT_URL=
# --- Xendit webhook survival sink (optional file-based fallback) ---
#
# When the primary DB log (`webhook_logs` table) is unreachable, the route can
# spill each inbound webhook to a daily-rolling JSONL file instead. Disabled
# by default — production opts in by mounting a persistent volume / GCS sync
# and flipping XENDIT_WEBHOOK_FALLBACK_ENABLED=true. The handler will NOT
# fall back to stdout; if both DB and this sink are unavailable the event is
# dropped.
#
# Filename pattern: "<NAME>-YYYY-MM-DD.jsonl" (UTC day boundary).
XENDIT_WEBHOOK_FALLBACK_ENABLED=false
XENDIT_WEBHOOK_FALLBACK_DIR=./logs
XENDIT_WEBHOOK_FALLBACK_NAME=xendit-webhook-fallback

View File

@@ -1086,6 +1086,65 @@ const migrate = async () => {
AND product_type = 'chat_session'
`
// 10. webhook_logs — survival/audit table for every inbound payment-provider
// webhook. The route handler inserts a row BEFORE auth checks or business
// logic so a forensic record exists even when the request is rejected,
// the body is malformed, or processing throws.
//
// Primary fields are extracted as columns (queryable in CC, indexed where
// useful); the full body is kept in `raw_body` JSONB so we can replay or
// diff later. `provider` is a string column (not enum) so adding a new
// payment provider doesn't require a migration.
//
// No FK to payment_requests — logs must survive even if the matching
// payment row was wiped, never existed, or arrives for a product/event
// type we don't yet model.
await sql`
CREATE TABLE IF NOT EXISTS webhook_logs (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
provider TEXT NOT NULL DEFAULT 'xendit',
received_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
-- Parsed primary fields (Xendit Invoice callback shape — NULL for other event types)
xendit_event_id TEXT,
external_id TEXT,
payment_request_id UUID,
status TEXT,
amount BIGINT,
currency TEXT,
payment_method TEXT,
paid_at TIMESTAMPTZ,
metadata_app TEXT,
-- Integrity + verbatim record
callback_token_valid BOOLEAN NOT NULL,
headers JSONB NOT NULL,
raw_body JSONB NOT NULL,
-- Outcome (filled by the handler after processing). Leaving these NULL
-- is itself a useful signal — it means the handler crashed before the
-- finally block could stamp the result.
http_status SMALLINT,
processing_result TEXT,
processing_error TEXT,
processed_at TIMESTAMPTZ
)
`
await sql`
CREATE INDEX IF NOT EXISTS idx_webhook_logs_received_at
ON webhook_logs (received_at DESC)
`
await sql`
CREATE INDEX IF NOT EXISTS idx_webhook_logs_external_id
ON webhook_logs (external_id)
WHERE external_id IS NOT NULL
`
await sql`
CREATE INDEX IF NOT EXISTS idx_webhook_logs_payment_request
ON webhook_logs (payment_request_id)
WHERE payment_request_id IS NOT NULL
`
console.log('Migration complete.')
await sql.end()
}

View File

@@ -6,25 +6,96 @@
// `x-callback-token` header verified against env XENDIT_WEBHOOK_TOKEN.
//
// Body shape from Xendit Invoice callback (relevant fields only):
// { id, external_id, status, amount, payment_method, paid_at, ... }
// { id, external_id, status, amount, payment_method, paid_at, metadata, ... }
//
// Handled statuses: PAID (→ confirmPayment), EXPIRED (→ expirePayment).
// Anything else ACKs with `{ ok: true, ignored: <status> }` for forward-compat.
//
// All state transitions go through payment.service.js — this handler is just
// the entry point. Events emit from inside the service, not from here.
// SURVIVAL LOGGING — every inbound webhook lands in `webhook_logs` BEFORE the
// auth check or any business logic, so we keep a forensic record even when:
// • the token is wrong (401)
// • the body is malformed / missing external_id
// • the referenced payment_request doesn't exist
// • amount mismatches and we reject (409)
// • downstream processing throws (500)
//
// If the DB insert itself fails, an optional rolling-file sink can absorb the
// event (see WEBHOOK_FALLBACK_* env vars in webhook-log.service.js). The sink
// is disabled by default — production opts in by mounting a persistent volume
// and flipping WEBHOOK_FALLBACK_ENABLED=true. We deliberately do NOT fall
// back to stdout; operators decide if/where survival writes happen.
//
// CONTROL FLOW NOTE — branches set `result` + `httpStatus` + `responseBody`
// into closure vars rather than calling `reply.send()` directly. Fastify
// flushes the response on `reply.send()` and `app.inject` resolves before any
// post-send finally would run, which would lose the outcome columns. We
// instead update the log once at the end, then send the reply once.
import { confirmPayment, expirePayment, getPayment, verifyWebhookToken } from '../../services/payment.service.js'
import {
insertWebhookLog,
sanitizeHeaders,
updateWebhookLog,
writeWebhookFallback,
} from '../../services/webhook-log.service.js'
// Our payment_requests.id is a UUID. A non-UUID external_id is either a legacy
// old-app invoice (should have been filtered by the router) or a stray Xendit
// event for a product we don't model. Skip the DB lookup (it would throw on
// the cast) and ACK so Xendit stops retrying.
const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
export const paymentWebhookRoutes = async (app) => {
app.post('/webhooks/xendit', async (request, reply) => {
const body = request.body ?? {}
const headerToken = request.headers['x-callback-token']
if (!verifyWebhookToken(headerToken)) {
request.log.warn('xendit webhook: bad token')
return reply.code(401).send({ error: 'invalid_token' })
const tokenValid = verifyWebhookToken(headerToken)
const sanitizedHeaders = sanitizeHeaders(request.headers)
// --- STEP 1: survival log ----------------------------------------------
// Insert before doing anything else. If this throws, attempt the optional
// rolling-file sink (env-gated, off by default). If that ALSO fails or is
// disabled, we silently continue — no stdout fallback by design, the
// operator's env config decides where survival writes go.
let logId = null
try {
logId = await insertWebhookLog({
provider: 'xendit',
headers: sanitizedHeaders,
rawBody: body,
callbackTokenValid: tokenValid,
})
} catch (dbErr) {
try {
await writeWebhookFallback({
provider: 'xendit',
headers: sanitizedHeaders,
rawBody: body,
callbackTokenValid: tokenValid,
dbErrorMessage: dbErr?.message,
})
} catch {
// Both sinks down. Nothing left to try — proceed without an audit
// trail. The operator chose this configuration; failure here is
// their disk/permission/config issue to monitor externally.
}
}
const body = request.body ?? {}
// --- STEP 2: process ---------------------------------------------------
// Defaults match the "uncaught exception in processing" case — finally
// (well, the post-try outcome stamp below) will stamp these into the log.
let result = 'error'
let httpStatus = 500
let responseBody = { error: 'internal_error' }
let errorMsg = null
try {
if (!tokenValid) {
request.log.warn('xendit webhook: bad token')
result = 'rejected_invalid_token'
httpStatus = 401
responseBody = { error: 'invalid_token' }
} else {
const invoiceId = body.id
const paymentRequestId = body.external_id
const status = body.status
@@ -38,55 +109,102 @@ export const paymentWebhookRoutes = async (app) => {
if (!paymentRequestId) {
// Forward-compat: future Xendit event types may not carry external_id
return reply.send({ ok: true, ignored: 'no_external_id' })
}
result = 'ignored_no_external_id'
httpStatus = 200
responseBody = { ok: true, ignored: 'no_external_id' }
} else if (!UUID_RE.test(paymentRequestId)) {
// Not one of ours — see UUID_RE comment above.
request.log.warn({ paymentRequestId, invoiceId }, 'non-UUID external_id — ACKing')
result = 'ignored_non_uuid_external_id'
httpStatus = 200
responseBody = { ok: true, ignored: 'non_uuid_external_id' }
} else {
const existing = await getPayment(paymentRequestId)
if (!existing) {
// Unknown payment — could be stale orphan from a wiped dev DB. ACK so Xendit
// stops retrying; warn so we notice if this becomes common in prod.
request.log.warn({ paymentRequestId, invoiceId }, 'unknown payment_request — ACKing')
return reply.send({ ok: true, ignored: 'unknown_payment_request' })
}
if (status === 'PAID') {
result = 'ignored_unknown_payment_request'
httpStatus = 200
responseBody = { ok: true, ignored: 'unknown_payment_request' }
} else if (status === 'PAID') {
// Defensive: amount mismatch = either tampering or config drift. Refuse to confirm.
if (amount !== null && amount !== existing.amount) {
request.log.error(
{ paymentRequestId, expected: existing.amount, got: amount },
'xendit webhook: amount mismatch',
)
return reply.code(409).send({ error: 'amount_mismatch' })
}
result = 'rejected_amount_mismatch'
httpStatus = 409
responseBody = { error: 'amount_mismatch' }
} else {
try {
await confirmPayment(paymentRequestId, { invoiceId, paymentMethod, amount })
result = 'confirmed'
} catch (err) {
// INVALID_STATE = already confirmed/consumed (Xendit retry); CONFLICT = race lost. ACK.
// EXPIRED = customer paid AFTER our sweeper expired the row — painful, manual recovery
// needed. Log loud so we notice. (D5 alignment should keep this rare.)
// EXPIRED = customer paid AFTER our sweeper expired the row — painful, manual
// recovery needed. Log loud so we notice. (D5 alignment should keep
// this rare.)
if (err.code === 'INVALID_STATE' || err.code === 'CONFLICT') {
request.log.info(
{ paymentRequestId, code: err.code, prevStatus: existing.status },
'xendit webhook: already in terminal state, ACKing',
)
result = `idempotent_${err.code.toLowerCase()}`
} else if (err.code === 'EXPIRED') {
request.log.error(
{ paymentRequestId, expiredAt: existing.expires_at },
'xendit webhook: PAID after expiry — manual recovery needed',
)
result = 'paid_after_expiry'
} else {
throw err
}
}
return reply.send({ ok: true })
httpStatus = 200
responseBody = { ok: true }
}
if (status === 'EXPIRED') {
} else if (status === 'EXPIRED') {
await expirePayment(paymentRequestId)
return reply.send({ ok: true })
result = 'expired'
httpStatus = 200
responseBody = { ok: true }
} else {
result = `ignored_${status}`
httpStatus = 200
responseBody = { ok: true, ignored: status }
}
}
}
} catch (err) {
// Anything that bubbles out of the processing block lands here. We do NOT
// re-throw — instead we ACK to ourselves (logged loudly) and return 500
// so Xendit retries on its own schedule. The forensic row records why.
errorMsg = err?.message ?? String(err)
request.log.error(
{ err: errorMsg, paymentRequestId: body.external_id },
'xendit webhook: unhandled exception during processing',
)
// Defaults already at result='error', httpStatus=500, responseBody=error
}
return reply.send({ ok: true, ignored: status })
// --- STEP 3: outcome stamp + reply -------------------------------------
// Awaited so the log row is consistent before we hand control back to the
// framework. Wrapped in its own try/catch: a failed update must never
// prevent us from responding to Xendit.
if (logId) {
try {
await updateWebhookLog(logId, {
httpStatus,
processingResult: result,
processingError: errorMsg,
})
} catch (updErr) {
request.log.error({ err: updErr?.message, logId }, 'webhook_log update failed')
}
}
return reply.code(httpStatus).send(responseBody)
})
}

View File

@@ -98,6 +98,9 @@ const createXenditInvoice = async ({ paymentRequestId, amount, ttlMinutes, descr
currency: 'IDR',
successRedirectUrl: successRedirectUrl || undefined,
failureRedirectUrl: failureRedirectUrl || undefined,
// Stamped so a shared webhook router (no DB access) can route v1 vs v2 traffic
// purely from the echoed payload. Keep this string stable — it is a routing key.
metadata: { app: 'halobestie_v2' },
// paymentMethods omitted → honor dashboard config (operator picks methods without a deploy)
},
})

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@@ -0,0 +1,166 @@
// Provider-agnostic webhook audit log. Every inbound provider webhook (Xendit
// today; others later) gets a row in `webhook_logs` BEFORE we run any auth or
// business logic, so a forensic record survives rejection, malformed bodies,
// and processing exceptions.
//
// Primary fields are parsed as columns (queryable / indexed); the entire body
// stays in `raw_body` JSONB verbatim so we can replay or diff later. Outcome
// columns are stamped by the route after processing.
//
// SECONDARY SINK — when the DB insert itself fails (DB outage, schema drift),
// an optional file-based sink writes one JSONL line per event to a daily
// rolling file. Disabled by default; opt in via env. We deliberately do NOT
// fall back to stdout — operators who want survival pick the file sink.
//
// This module exposes only what the route needs:
// sanitizeHeaders(headers) → header dict with secrets redacted
// insertWebhookLog({...}) → returns inserted row id
// updateWebhookLog(id, {...}) → stamps outcome columns
// writeWebhookFallback({...}) → optional file sink on DB failure
// getWebhookLog(id) [test/CC use] → row or null
import { appendFile, mkdir } from 'node:fs/promises'
import path from 'node:path'
import { getDb } from '../db/client.js'
const sql = getDb()
// Header values we never persist. We still keep the *names* so callers can see
// which auth scheme the request used — only the secret material is dropped.
const SECRET_HEADER_NAMES = new Set([
'x-callback-token',
'authorization',
'cookie',
'set-cookie',
'proxy-authorization',
])
export const sanitizeHeaders = (headers) => {
const out = {}
for (const [k, v] of Object.entries(headers ?? {})) {
const key = k.toLowerCase()
out[key] = SECRET_HEADER_NAMES.has(key) ? '[REDACTED]' : v
}
return out
}
const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i
const isUuid = (s) => typeof s === 'string' && UUID_RE.test(s)
const str = (v) => (typeof v === 'string' ? v : null)
const num = (v) => (typeof v === 'number' && Number.isFinite(v) ? v : null)
const parseTimestamp = (v) => {
if (typeof v !== 'string') return null
const d = new Date(v)
return Number.isFinite(d.getTime()) ? d.toISOString() : null
}
/**
* Insert the survival row. Throws only if the DB itself is unreachable — the
* caller wraps this in try/catch and falls through to a structured-log
* fallback so a misbehaving DB never causes Xendit to retry forever.
*/
export const insertWebhookLog = async ({ provider, headers, rawBody, callbackTokenValid }) => {
const body = rawBody ?? {}
const externalId = str(body.external_id)
const paymentRequestId = isUuid(externalId) ? externalId : null
const [row] = await sql`
INSERT INTO webhook_logs (
provider, headers, raw_body, callback_token_valid,
xendit_event_id, external_id, payment_request_id,
status, amount, currency, payment_method, paid_at, metadata_app
) VALUES (
${provider},
${sql.json(headers ?? {})},
${sql.json(body)},
${callbackTokenValid},
${str(body.id)},
${externalId},
${paymentRequestId},
${str(body.status)},
${num(body.amount)},
${str(body.currency)},
${str(body.payment_method)},
${parseTimestamp(body.paid_at)},
${str(body?.metadata?.app)}
)
RETURNING id
`
return row.id
}
/**
* Stamp outcome columns once the handler has decided a response. Wrapped by
* the caller in its own try/catch so a failed update never replaces the
* original processing error.
*/
export const updateWebhookLog = async (logId, { httpStatus, processingResult, processingError }) => {
await sql`
UPDATE webhook_logs
SET http_status = ${httpStatus ?? null},
processing_result = ${processingResult ?? null},
processing_error = ${processingError ?? null},
processed_at = NOW()
WHERE id = ${logId}
`
}
export const getWebhookLog = async (logId) => {
const rows = await sql`SELECT * FROM webhook_logs WHERE id = ${logId}`
return rows[0] ?? null
}
// --- Secondary sink: rolling JSONL file --------------------------------------
//
// Only used when the DB insert above fails. Env-controlled so production can
// opt in (e.g. mount a persistent volume + tail with logrotate) without
// affecting dev/test machines. By default the sink is OFF — the handler will
// silently skip it and rely on the DB as the sole audit trail.
//
// Config (xendit_ prefix groups these with the other XENDIT_* vars):
// XENDIT_WEBHOOK_FALLBACK_ENABLED — "true" to enable; anything else = off (default off)
// XENDIT_WEBHOOK_FALLBACK_DIR — directory the JSONL files live in (default "./logs")
// XENDIT_WEBHOOK_FALLBACK_NAME — basename for rolling files (default "xendit-webhook-fallback")
//
// Rolling pattern: one file per UTC day, named "<NAME>-YYYY-MM-DD.jsonl".
// Old files accumulate — pair with logrotate / GCS sync if you need retention
// limits. We don't size-rotate inside Node because the fallback only fires on
// DB outage, which should be rare enough that daily granularity is plenty.
export const getWebhookFallbackConfig = () => ({
enabled: process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED === 'true',
dir: process.env.XENDIT_WEBHOOK_FALLBACK_DIR || './logs',
name: process.env.XENDIT_WEBHOOK_FALLBACK_NAME || 'xendit-webhook-fallback',
})
export const rollingFallbackFilename = (name, now = new Date()) => {
const yyyy = now.getUTCFullYear()
const mm = String(now.getUTCMonth() + 1).padStart(2, '0')
const dd = String(now.getUTCDate()).padStart(2, '0')
return `${name}-${yyyy}-${mm}-${dd}.jsonl`
}
/**
* Append one JSONL line to the rolling fallback file. Returns true if the
* write happened, false if the sink is disabled. Throws on real I/O errors —
* the caller decides whether to swallow.
*/
export const writeWebhookFallback = async ({ provider, headers, rawBody, callbackTokenValid, dbErrorMessage }) => {
const cfg = getWebhookFallbackConfig()
if (!cfg.enabled) return false
const filename = rollingFallbackFilename(cfg.name)
const filepath = path.join(cfg.dir, filename)
const line = JSON.stringify({
received_at: new Date().toISOString(),
provider,
callback_token_valid: callbackTokenValid,
headers,
raw_body: rawBody,
db_error: dbErrorMessage ?? null,
}) + '\n'
await mkdir(cfg.dir, { recursive: true })
await appendFile(filepath, line, 'utf8')
return true
}

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@@ -19,6 +19,7 @@ export const db = () => getDb()
* force every test to re-create users (slow + noisy).
*/
const TRUNCATE_TABLES = [
'webhook_logs',
'pairing_failures',
'payment_requests',
'chat_request_notifications',

View File

@@ -187,4 +187,179 @@ describe('POST /api/shared/payment/webhooks/xendit', () => {
const [row] = await db()`SELECT status FROM payment_requests WHERE id = ${session.id}`
expect(row.status).toBe(PaymentRequestStatus.PENDING)
})
// --- Survival logging --------------------------------------------------
// Every inbound webhook lands in `webhook_logs` BEFORE auth/validation, so
// we keep a forensic record on rejects, unknown payments, and exceptions.
describe('webhook_logs survival audit', () => {
const latestLog = async () => {
const rows = await db()`SELECT * FROM webhook_logs ORDER BY received_at DESC LIMIT 1`
return rows[0]
}
it('PAID: logs row with parsed primary fields + outcome stamped', async () => {
const session = await requestPayment({
productType: 'chat_session',
customerId: customer.id, durationMinutes: 12, amount: 50_000,
})
await fireWebhook(app, {
id: 'inv_log_paid',
external_id: session.id,
status: 'PAID',
amount: 50_000,
currency: 'IDR',
payment_method: 'BCA',
paid_at: '2026-05-25T10:00:00.000Z',
metadata: { app: 'halobestie_v2' },
})
const log = await latestLog()
expect(log.provider).toBe('xendit')
expect(log.callback_token_valid).toBe(true)
expect(log.xendit_event_id).toBe('inv_log_paid')
expect(log.external_id).toBe(session.id)
expect(log.payment_request_id).toBe(session.id)
expect(log.status).toBe('PAID')
expect(Number(log.amount)).toBe(50_000)
expect(log.currency).toBe('IDR')
expect(log.payment_method).toBe('BCA')
expect(log.paid_at).not.toBeNull()
expect(log.metadata_app).toBe('halobestie_v2')
expect(log.http_status).toBe(200)
expect(log.processing_result).toBe('confirmed')
expect(log.processing_error).toBeNull()
expect(log.processed_at).not.toBeNull()
// raw_body is verbatim — unknown future fields would land here
expect(log.raw_body.metadata.app).toBe('halobestie_v2')
})
it('401 invalid token still logs a row with callback_token_valid=false', async () => {
const res = await fireWebhook(
app,
{ id: 'inv_log_401', external_id: 'whatever', status: 'PAID', amount: 1 },
'wrong-token-but-same-length-padding',
)
expect(res.statusCode).toBe(401)
const log = await latestLog()
expect(log.callback_token_valid).toBe(false)
expect(log.http_status).toBe(401)
expect(log.processing_result).toBe('rejected_invalid_token')
// Raw body still captured even though the request was rejected
expect(log.raw_body.id).toBe('inv_log_401')
})
it('redacts x-callback-token in stored headers', async () => {
await fireWebhook(app, { id: 'inv_redact', external_id: 'x', status: 'PAID', amount: 1 })
const log = await latestLog()
expect(log.headers['x-callback-token']).toBe('[REDACTED]')
// Non-secret headers are kept (e.g. content-type)
expect(log.headers['content-type']).toMatch(/application\/json/)
})
it('amount mismatch (409) logs rejected_amount_mismatch', async () => {
const session = await requestPayment({
productType: 'chat_session',
customerId: customer.id, durationMinutes: 12, amount: 50_000,
})
const res = await fireWebhook(app, {
id: 'inv_log_mismatch', external_id: session.id, status: 'PAID', amount: 999,
})
expect(res.statusCode).toBe(409)
const log = await latestLog()
expect(log.http_status).toBe(409)
expect(log.processing_result).toBe('rejected_amount_mismatch')
expect(Number(log.amount)).toBe(999)
})
it('unknown payment_request still logs ignored_unknown_payment_request', async () => {
await fireWebhook(app, {
id: 'inv_log_orphan',
external_id: '00000000-0000-0000-0000-000000000000',
status: 'PAID',
amount: 50_000,
})
const log = await latestLog()
expect(log.processing_result).toBe('ignored_unknown_payment_request')
expect(log.payment_request_id).toBe('00000000-0000-0000-0000-000000000000')
})
it('missing external_id logs ignored_no_external_id with payment_request_id NULL', async () => {
await fireWebhook(app, { id: 'evt_nox', status: 'SOMETHING' })
const log = await latestLog()
expect(log.processing_result).toBe('ignored_no_external_id')
expect(log.external_id).toBeNull()
expect(log.payment_request_id).toBeNull()
})
it('non-UUID external_id ACKs 200 and logs ignored_non_uuid_external_id', async () => {
const res = await fireWebhook(app, {
id: 'inv_log_legacy',
external_id: 'legacy-old-app-id-42',
status: 'PAID',
amount: 1,
})
expect(res.statusCode).toBe(200)
expect(res.json().ignored).toBe('non_uuid_external_id')
const log = await latestLog()
expect(log.external_id).toBe('legacy-old-app-id-42')
expect(log.payment_request_id).toBeNull()
expect(log.processing_result).toBe('ignored_non_uuid_external_id')
expect(log.http_status).toBe(200)
})
it('logs raw_body verbatim including unknown fields', async () => {
const session = await requestPayment({
productType: 'chat_session',
customerId: customer.id, durationMinutes: 12, amount: 50_000,
})
await fireWebhook(app, {
id: 'inv_log_extra',
external_id: session.id,
status: 'PAID',
amount: 50_000,
future_field_we_dont_know_yet: { nested: ['anything', 42] },
metadata: { app: 'halobestie_v2', extra: 'preserved' },
})
const log = await latestLog()
expect(log.raw_body.future_field_we_dont_know_yet.nested).toEqual(['anything', 42])
expect(log.raw_body.metadata.extra).toBe('preserved')
expect(log.metadata_app).toBe('halobestie_v2')
})
it('survives processing exceptions: logs processing_error + http_status=500', async () => {
// Force an exception by stubbing getPayment to throw. The survival
// contract is that even when the handler errors, the forensic row is
// intact and stamped — Xendit will retry on its own, but we have the
// record either way.
const paymentSvc = await import('../../src/services/payment.service.js')
const orig = paymentSvc.getPayment
const stub = vi.spyOn(paymentSvc, 'getPayment').mockImplementation(async () => {
throw new Error('synthetic_db_outage')
})
try {
const res = await fireWebhook(app, {
id: 'inv_boom',
external_id: '11111111-1111-1111-1111-111111111111',
status: 'PAID',
amount: 50_000,
})
expect(res.statusCode).toBe(500)
const log = await latestLog()
expect(log.http_status).toBe(500)
expect(log.processing_result).toBe('error')
expect(log.processing_error).toBe('synthetic_db_outage')
expect(log.xendit_event_id).toBe('inv_boom')
// Raw body is still there even though processing blew up
expect(log.raw_body.id).toBe('inv_boom')
} finally {
stub.mockRestore()
void orig
}
})
})
})

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import { describe, it, expect, afterEach, beforeEach } from 'vitest'
import { mkdtemp, readFile, rm, readdir } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import path from 'node:path'
const {
rollingFallbackFilename,
getWebhookFallbackConfig,
writeWebhookFallback,
sanitizeHeaders,
} = await import('../../src/services/webhook-log.service.js')
describe('webhook-log.service helpers', () => {
describe('sanitizeHeaders', () => {
it('redacts secret-bearing headers but keeps their names', () => {
const out = sanitizeHeaders({
'x-callback-token': 'shhhh',
'Authorization': 'Bearer abc',
'cookie': 'sid=xyz',
'content-type': 'application/json',
'x-request-id': 'req-1',
})
expect(out['x-callback-token']).toBe('[REDACTED]')
expect(out['authorization']).toBe('[REDACTED]')
expect(out['cookie']).toBe('[REDACTED]')
expect(out['content-type']).toBe('application/json')
expect(out['x-request-id']).toBe('req-1')
})
it('lowercases keys so lookups are consistent', () => {
const out = sanitizeHeaders({ 'X-Callback-Token': 't', 'Content-Type': 'app/json' })
expect(out['x-callback-token']).toBe('[REDACTED]')
expect(out['content-type']).toBe('app/json')
expect(out['X-Callback-Token']).toBeUndefined()
})
})
describe('rollingFallbackFilename', () => {
it('produces "<name>-YYYY-MM-DD.jsonl" using UTC day boundary', () => {
const d = new Date(Date.UTC(2026, 4, 25, 10, 30))
expect(rollingFallbackFilename('xendit', d)).toBe('xendit-2026-05-25.jsonl')
})
it('zero-pads single-digit months and days', () => {
const d = new Date(Date.UTC(2026, 0, 3, 0, 0))
expect(rollingFallbackFilename('wh', d)).toBe('wh-2026-01-03.jsonl')
})
it('a date right before UTC midnight stays on the current day', () => {
const d = new Date(Date.UTC(2026, 4, 25, 23, 59, 59))
expect(rollingFallbackFilename('x', d)).toBe('x-2026-05-25.jsonl')
})
})
describe('getWebhookFallbackConfig', () => {
const originalEnv = { ...process.env }
afterEach(() => {
// Restore only the vars this suite touches — leaving the rest alone.
for (const k of ['XENDIT_WEBHOOK_FALLBACK_ENABLED', 'XENDIT_WEBHOOK_FALLBACK_DIR', 'XENDIT_WEBHOOK_FALLBACK_NAME']) {
if (originalEnv[k] === undefined) delete process.env[k]
else process.env[k] = originalEnv[k]
}
})
it('defaults to disabled with sensible dir/name', () => {
delete process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED
delete process.env.XENDIT_WEBHOOK_FALLBACK_DIR
delete process.env.XENDIT_WEBHOOK_FALLBACK_NAME
expect(getWebhookFallbackConfig()).toEqual({
enabled: false,
dir: './logs',
name: 'xendit-webhook-fallback',
})
})
it('only the literal string "true" enables the sink', () => {
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = '1'
expect(getWebhookFallbackConfig().enabled).toBe(false)
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = 'yes'
expect(getWebhookFallbackConfig().enabled).toBe(false)
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = 'true'
expect(getWebhookFallbackConfig().enabled).toBe(true)
})
it('honors custom dir/name', () => {
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = 'true'
process.env.XENDIT_WEBHOOK_FALLBACK_DIR = '/var/log/webhooks'
process.env.XENDIT_WEBHOOK_FALLBACK_NAME = 'xendit-prod'
expect(getWebhookFallbackConfig()).toEqual({
enabled: true,
dir: '/var/log/webhooks',
name: 'xendit-prod',
})
})
})
describe('writeWebhookFallback', () => {
let workDir
const originalEnv = { ...process.env }
beforeEach(async () => {
workDir = await mkdtemp(path.join(tmpdir(), 'webhook-fallback-'))
})
afterEach(async () => {
for (const k of ['XENDIT_WEBHOOK_FALLBACK_ENABLED', 'XENDIT_WEBHOOK_FALLBACK_DIR', 'XENDIT_WEBHOOK_FALLBACK_NAME']) {
if (originalEnv[k] === undefined) delete process.env[k]
else process.env[k] = originalEnv[k]
}
await rm(workDir, { recursive: true, force: true })
})
it('returns false and writes nothing when disabled', async () => {
delete process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED
const ok = await writeWebhookFallback({
provider: 'xendit',
headers: { 'content-type': 'application/json' },
rawBody: { id: 'inv_x' },
callbackTokenValid: true,
})
expect(ok).toBe(false)
expect(await readdir(workDir)).toEqual([])
})
it('appends one JSONL line per call to the rolling daily file', async () => {
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = 'true'
process.env.XENDIT_WEBHOOK_FALLBACK_DIR = workDir
process.env.XENDIT_WEBHOOK_FALLBACK_NAME = 'test-fallback'
await writeWebhookFallback({
provider: 'xendit',
headers: { 'content-type': 'application/json', 'x-callback-token': '[REDACTED]' },
rawBody: { id: 'inv_a', external_id: 'pr-1', status: 'PAID' },
callbackTokenValid: true,
dbErrorMessage: 'connection refused',
})
await writeWebhookFallback({
provider: 'xendit',
headers: {},
rawBody: { id: 'inv_b', status: 'EXPIRED' },
callbackTokenValid: false,
})
const files = await readdir(workDir)
expect(files).toHaveLength(1)
expect(files[0]).toMatch(/^test-fallback-\d{4}-\d{2}-\d{2}\.jsonl$/)
const contents = await readFile(path.join(workDir, files[0]), 'utf8')
const lines = contents.trim().split('\n')
expect(lines).toHaveLength(2)
const first = JSON.parse(lines[0])
expect(first.provider).toBe('xendit')
expect(first.callback_token_valid).toBe(true)
expect(first.raw_body.id).toBe('inv_a')
expect(first.raw_body.external_id).toBe('pr-1')
expect(first.db_error).toBe('connection refused')
expect(first.headers['x-callback-token']).toBe('[REDACTED]')
expect(first.received_at).toMatch(/^\d{4}-\d{2}-\d{2}T/)
const second = JSON.parse(lines[1])
expect(second.raw_body.id).toBe('inv_b')
expect(second.callback_token_valid).toBe(false)
expect(second.db_error).toBeNull()
})
it('creates the destination directory if it does not exist', async () => {
process.env.XENDIT_WEBHOOK_FALLBACK_ENABLED = 'true'
const nested = path.join(workDir, 'does', 'not', 'exist', 'yet')
process.env.XENDIT_WEBHOOK_FALLBACK_DIR = nested
process.env.XENDIT_WEBHOOK_FALLBACK_NAME = 'nested'
const ok = await writeWebhookFallback({
provider: 'xendit',
headers: {},
rawBody: { id: 'inv_n' },
callbackTokenValid: true,
})
expect(ok).toBe(true)
const files = await readdir(nested)
expect(files).toHaveLength(1)
})
})
})