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Run webhook sender on the kit worker framework

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Convert the hand-rolled webhook Sender loop into a kit worker.Handler so
the sender gets the standard worker recovery, metrics and tracing
instead. Claim loads the next unprocessed webhook data and Process
performs the deliveries; behaviour is preserved with a single-concurrency
worker on the existing poll interval.

Signed-off-by: Sacha Al Himdani <sacha@probo.com>
This commit is contained in:
Sacha Al Himdani
2026-06-23 09:53:52 +02:00
parent 14f52f0ef4
commit 1948142e7a
2 changed files with 76 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

125
pkg/webhook/sender.go → pkg/webhook/webhook_worker.go
View File

@@ -32,13 +32,14 @@ import (
"go.gearno.de/kit/httpclient"
"go.gearno.de/kit/log"
"go.gearno.de/kit/pg"
"go.gearno.de/kit/worker"
"go.probo.inc/probo/pkg/coredata"
"go.probo.inc/probo/pkg/crypto/cipher"
"go.probo.inc/probo/pkg/gid"
)
type (
Sender struct {
webhookHandler struct {
pg *pg.Client
logger *log.Logger
httpClient *http.Client
@@ -47,7 +48,6 @@ type (
cache sync.Map
cacheCreatedAt time.Time
cacheTTL time.Duration
interval time.Duration
timeout time.Duration
}
@@ -68,11 +68,23 @@ type (
Event *coredata.WebhookEvent
Config *coredata.WebhookSubscription
}
webhookTask struct {
webhookData *coredata.WebhookData
deliveries []pendingDelivery
}
)
const maxResponseBodySize = 64 * 1024 // 64KB
func NewSender(pg *pg.Client, logger *log.Logger, cfg Config) *Sender {
var _ worker.Handler[webhookTask] = (*webhookHandler)(nil)
func NewWebhookWorker(
pgClient *pg.Client,
logger *log.Logger,
cfg Config,
opts ...worker.Option,
) *worker.Worker[webhookTask] {
if cfg.Interval <= 0 {
cfg.Interval = 5 * time.Second
}
@@ -85,59 +97,64 @@ func NewSender(pg *pg.Client, logger *log.Logger, cfg Config) *Sender {
cfg.CacheTTL = 24 * time.Hour
}
return &Sender{
pg: pg,
h := &webhookHandler{
pg: pgClient,
logger: logger,
httpClient: httpclient.DefaultPooledClient(httpclient.WithLogger(logger), httpclient.WithSSRFProtection()),
encryptionKey: cfg.EncryptionKey,
host: cfg.Host,
cacheCreatedAt: time.Now(),
cacheTTL: cfg.CacheTTL,
interval: cfg.Interval,
timeout: cfg.Timeout,
}
workerOpts := append(
[]worker.Option{
worker.WithInterval(cfg.Interval),
worker.WithMaxConcurrency(1),
},
opts...,
)
return worker.New(
"webhook-sender",
h,
logger,
workerOpts...,
)
}
func (s *Sender) Run(ctx context.Context) error {
for {
select {
case <-ctx.Done():
return ctx.Err()
case <-time.After(s.interval):
if err := s.processEvents(ctx); err != nil {
s.logger.ErrorCtx(ctx, "cannot process webhook events", log.Error(err))
}
}
}
}
func (s *Sender) processEvents(ctx context.Context) error {
if time.Since(s.cacheCreatedAt) >= s.cacheTTL {
s.cache = sync.Map{}
s.cacheCreatedAt = time.Now()
func (h *webhookHandler) Claim(ctx context.Context) (webhookTask, error) {
if time.Since(h.cacheCreatedAt) >= h.cacheTTL {
h.cache = sync.Map{}
h.cacheCreatedAt = time.Now()
}
for {
webhookData, deliveries, err := s.claimNextWebhookData(ctx)
if err != nil {
if errors.Is(err, coredata.ErrResourceNotFound) {
return nil
}
return fmt.Errorf("cannot claim next webhook data: %w", err)
webhookData, deliveries, err := h.claimNextWebhookData(ctx)
if err != nil {
if errors.Is(err, coredata.ErrResourceNotFound) {
return webhookTask{}, worker.ErrNoTask
}
s.processDeliveries(ctx, webhookData, deliveries)
return webhookTask{}, fmt.Errorf("cannot claim next webhook data: %w", err)
}
return webhookTask{webhookData: webhookData, deliveries: deliveries}, nil
}
func (s *Sender) claimNextWebhookData(ctx context.Context) (*coredata.WebhookData, []pendingDelivery, error) {
func (h *webhookHandler) Process(ctx context.Context, task webhookTask) error {
h.processDeliveries(ctx, task.webhookData, task.deliveries)
return nil
}
func (h *webhookHandler) claimNextWebhookData(ctx context.Context) (*coredata.WebhookData, []pendingDelivery, error) {
var (
webhookData coredata.WebhookData
deliveries []pendingDelivery
)
err := s.pg.WithTx(ctx, func(ctx context.Context, tx pg.Tx) error {
err := h.pg.WithTx(ctx, func(ctx context.Context, tx pg.Tx) error {
if err := webhookData.LoadNextUnprocessedForUpdate(ctx, tx); err != nil {
return fmt.Errorf("cannot load next unprocessed webhook data: %w", err)
}
@@ -193,36 +210,36 @@ func (s *Sender) claimNextWebhookData(ctx context.Context) (*coredata.WebhookDat
return &webhookData, deliveries, nil
}
func (s *Sender) processDeliveries(ctx context.Context, webhookData *coredata.WebhookData, deliveries []pendingDelivery) {
func (h *webhookHandler) processDeliveries(ctx context.Context, webhookData *coredata.WebhookData, deliveries []pendingDelivery) {
for _, d := range deliveries {
s.deliver(ctx, webhookData, d)
h.deliver(ctx, webhookData, d)
}
}
func (s *Sender) deliver(ctx context.Context, webhookData *coredata.WebhookData, d pendingDelivery) {
func (h *webhookHandler) deliver(ctx context.Context, webhookData *coredata.WebhookData, d pendingDelivery) {
scope := coredata.NewScopeFromObjectID(d.Event.ID)
signingSecret, err := s.getSigningSecret(d.Config.ID.String(), d.Config.EncryptedSigningSecret)
signingSecret, err := h.getSigningSecret(d.Config.ID.String(), d.Config.EncryptedSigningSecret)
if err != nil {
s.logger.ErrorCtx(
h.logger.ErrorCtx(
ctx,
"cannot get signing secret",
log.Error(err),
log.String("webhook_data_id", webhookData.ID.String()),
log.String("subscription_id", d.Config.ID.String()),
)
s.updateEventStatus(ctx, d.Event, scope, coredata.WebhookEventStatusFailed, nil)
h.updateEventStatus(ctx, d.Event, scope, coredata.WebhookEventStatusFailed, nil)
return
}
response, sendErr := s.doHTTPCall(ctx, d.Event.ID, d.Config.EndpointURL, webhookData, d.Config.ID, signingSecret)
response, sendErr := h.doHTTPCall(ctx, d.Event.ID, d.Config.EndpointURL, webhookData, d.Config.ID, signingSecret)
eventStatus := coredata.WebhookEventStatusSucceeded
if sendErr != nil {
eventStatus = coredata.WebhookEventStatusFailed
s.logger.ErrorCtx(
h.logger.ErrorCtx(
ctx,
"error delivering webhook",
log.Error(sendErr),
@@ -231,10 +248,10 @@ func (s *Sender) deliver(ctx context.Context, webhookData *coredata.WebhookData,
)
}
s.updateEventStatus(ctx, d.Event, scope, eventStatus, response)
h.updateEventStatus(ctx, d.Event, scope, eventStatus, response)
}
func (s *Sender) updateEventStatus(
func (h *webhookHandler) updateEventStatus(
ctx context.Context,
event *coredata.WebhookEvent,
scope coredata.Scoper,
@@ -244,11 +261,11 @@ func (s *Sender) updateEventStatus(
event.Status = status
event.Response = response
err := s.pg.WithTx(ctx, func(ctx context.Context, tx pg.Tx) error {
err := h.pg.WithTx(ctx, func(ctx context.Context, tx pg.Tx) error {
return event.UpdateStatus(ctx, tx, scope)
})
if err != nil {
s.logger.ErrorCtx(
h.logger.ErrorCtx(
ctx,
"cannot update webhook event status",
log.Error(err),
@@ -258,21 +275,21 @@ func (s *Sender) updateEventStatus(
}
}
func (s *Sender) getSigningSecret(webhookSubscriptionID string, encryptedSigningSecret []byte) (string, error) {
if cached, ok := s.cache.Load(webhookSubscriptionID); ok {
func (h *webhookHandler) getSigningSecret(webhookSubscriptionID string, encryptedSigningSecret []byte) (string, error) {
if cached, ok := h.cache.Load(webhookSubscriptionID); ok {
entry := cached.(*cachedSecret)
if bytes.Equal(entry.encryptedSecret, encryptedSigningSecret) {
return entry.plaintext, nil
}
}
plaintext, err := cipher.Decrypt(encryptedSigningSecret, s.encryptionKey)
plaintext, err := cipher.Decrypt(encryptedSigningSecret, h.encryptionKey)
if err != nil {
return "", fmt.Errorf("cannot decrypt signing secret: %w", err)
}
signingSecret := string(plaintext)
s.cache.Store(
h.cache.Store(
webhookSubscriptionID,
&cachedSecret{
encryptedSecret: encryptedSigningSecret,
@@ -283,7 +300,7 @@ func (s *Sender) getSigningSecret(webhookSubscriptionID string, encryptedSigning
return signingSecret, nil
}
func (s *Sender) doHTTPCall(
func (h *webhookHandler) doHTTPCall(
ctx context.Context,
eventID gid.GID,
endpointURL string,
@@ -305,7 +322,7 @@ func (s *Sender) doHTTPCall(
return nil, fmt.Errorf("cannot marshal webhook payload: %w", err)
}
reqCtx, cancel := context.WithTimeout(ctx, s.timeout)
reqCtx, cancel := context.WithTimeout(ctx, h.timeout)
defer cancel()
req, err := http.NewRequestWithContext(reqCtx, http.MethodPost, endpointURL, bytes.NewReader(body))
@@ -321,9 +338,9 @@ func (s *Sender) doHTTPCall(
req.Header.Set("X-Probo-Webhook-Organization-Id", webhookData.OrganizationID.String())
req.Header.Set("X-Probo-Webhook-Timestamp", timestamp)
req.Header.Set("X-Probo-Webhook-Signature", signature)
req.Header.Set("X-Probo-Webhook-Host", s.host)
req.Header.Set("X-Probo-Webhook-Host", h.host)
resp, err := s.httpClient.Do(req)
resp, err := h.httpClient.Do(req)
if err != nil {
return nil, fmt.Errorf("cannot send request: %w", err)
}