bff for callbacks

2026-03-01 02:04:15 +01:00
parent 709df51512
commit 86eab3bb70
44 changed files with 1563 additions and 25 deletions
--- a/api/edge/bff/config.dev.yml
+++ b/api/edge/bff/config.dev.yml
@@ -109,6 +109,19 @@ api:
    dial_timeout_seconds: 5
    call_timeout_seconds: 5
    insecure: true
+  callbacks:
+    default_event_types:
+      - payment.status.updated
+    default_status: active
+    secret_path_prefix: sendico/callbacks
+    secret_field: value
+    secret_length_bytes: 32
+    vault:
+      address: "http://dev-vault:8200"
+      token_env: VAULT_TOKEN
+      token_file_env: VAULT_TOKEN_FILE
+      namespace: ""
+      mount_path: kv

 app:

--- a/api/edge/bff/config.yml
+++ b/api/edge/bff/config.yml
@@ -111,6 +111,19 @@ api:
    dial_timeout_seconds: 5
    call_timeout_seconds: 5
    insecure: true
+  callbacks:
+    default_event_types:
+      - payment.status.updated
+    default_status: active
+    secret_path_prefix: sendico/callbacks
+    secret_field: value
+    secret_length_bytes: 32
+    vault:
+      address: "https://vault.sendico.io"
+      token_env: VAULT_TOKEN
+      token_file_env: VAULT_TOKEN_FILE
+      namespace: ""
+      mount_path: kv

 app:

--- a/api/edge/bff/go.mod
+++ b/api/edge/bff/go.mod
@@ -25,6 +25,7 @@ require (
 	github.com/go-chi/metrics v0.1.1
 	github.com/google/uuid v1.6.0
 	github.com/mitchellh/mapstructure v1.5.0
+	github.com/prometheus/client_golang v1.23.2
 	github.com/shopspring/decimal v1.4.0
 	github.com/stretchr/testify v1.11.1
 	github.com/tech/sendico/gateway/tron v0.0.0-00010101000000-000000000000
@@ -83,11 +84,22 @@ require (
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-chi/chi v1.5.5 // indirect
+	github.com/go-jose/go-jose/v4 v4.1.3 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/go-retryablehttp v0.7.8 // indirect
+	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
+	github.com/hashicorp/go-secure-stdlib/parseutil v0.2.0 // indirect
+	github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 // indirect
+	github.com/hashicorp/go-sockaddr v1.0.7 // indirect
+	github.com/hashicorp/hcl v1.0.1-vault-7 // indirect
+	github.com/hashicorp/vault/api v1.22.0 // indirect
 	github.com/klauspost/compress v1.18.4 // indirect
 	github.com/lestrrat-go/blackmagic v1.0.4 // indirect
 	github.com/lestrrat-go/dsig v1.0.0 // indirect
@@ -100,6 +112,7 @@ require (
 	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
 	github.com/moby/patternmatcher v0.6.0 // indirect
 	github.com/moby/sys/sequential v0.6.0 // indirect
@@ -116,10 +129,10 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
-	github.com/prometheus/client_golang v1.23.2 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.67.5 // indirect
 	github.com/prometheus/procfs v0.20.1 // indirect
+	github.com/ryanuber/go-glob v1.0.0 // indirect
 	github.com/segmentio/asm v1.2.1 // indirect
 	github.com/shirou/gopsutil/v3 v3.24.5 // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
@@ -145,5 +158,6 @@ require (
 	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.41.0 // indirect
 	golang.org/x/text v0.34.0 // indirect
+	golang.org/x/time v0.14.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 // indirect
 )
--- a/api/edge/bff/go.sum
+++ b/api/edge/bff/go.sum
@@ -85,6 +85,8 @@ github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj
 github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
+github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/go-chi/chi v1.5.4/go.mod h1:uaf8YgoFazUOkPBG7fxPftUylNumIev9awIWOENIuEg=
@@ -98,6 +100,8 @@ github.com/go-chi/jwtauth/v5 v5.4.0 h1:Ieh0xMJsFvqylqJ02/mQHKzbbKO9DYNBh4DPKCwTw
 github.com/go-chi/jwtauth/v5 v5.4.0/go.mod h1:w6yjqUUXz1b8+oiJel64Sz1KJwduQM6qUA5QNzO5+bQ=
 github.com/go-chi/metrics v0.1.1 h1:CXhbnkAVVjb0k73EBRQ6Z2YdWFnbXZgNtg1Mboguibk=
 github.com/go-chi/metrics v0.1.1/go.mod h1:mcGTM1pPalP7WCtb+akNYFO/lwNwBBLCuedepqjoPn4=
+github.com/go-jose/go-jose/v4 v4.1.3 h1:CVLmWDhDVRa6Mi/IgCgaopNosCaHz7zrMeF9MlZRkrs=
+github.com/go-jose/go-jose/v4 v4.1.3/go.mod h1:x4oUasVrzR7071A4TnHLGSPpNOm2a21K9Kf04k1rs08=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
 github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
@@ -106,6 +110,8 @@ github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre
 github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
 github.com/go-ole/go-ole v1.3.0 h1:Dt6ye7+vXGIKZ7Xtk4s6/xVdGDQynvom7xCFEdWr6uE=
 github.com/go-ole/go-ole v1.3.0/go.mod h1:5LS6F96DhAwUc7C+1HLexzMXY1xGRSryjyPPKW6zv78=
+github.com/go-test/deep v1.1.1 h1:0r/53hagsehfO4bzD2Pgr/+RgHqhmf+k1Bpse2cTu1U=
+github.com/go-test/deep v1.1.1/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
 github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
 github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
@@ -123,6 +129,29 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7 h1:X+2YciYSxvMQK0UZ7sg45ZVabVZBeBuvMkmuI2V3Fak=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7/go.mod h1:lW34nIZuQ8UDPdkon5fmfp2l3+ZkQ2me/+oecHYLOII=
+github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
+github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9neXJWAZQ=
+github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
+github.com/hashicorp/go-hclog v1.6.3 h1:Qr2kF+eVWjTiYmU7Y31tYlP1h0q/X3Nl3tPGdaB11/k=
+github.com/hashicorp/go-hclog v1.6.3/go.mod h1:W4Qnvbt70Wk/zYJryRzDRU/4r0kIg0PVHBcfoyhpF5M=
+github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
+github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
+github.com/hashicorp/go-retryablehttp v0.7.8 h1:ylXZWnqa7Lhqpk0L1P1LzDtGcCR0rPVUrx/c8Unxc48=
+github.com/hashicorp/go-retryablehttp v0.7.8/go.mod h1:rjiScheydd+CxvumBsIrFKlx3iS0jrZ7LvzFGFmuKbw=
+github.com/hashicorp/go-rootcerts v1.0.2 h1:jzhAVGtqPKbwpyCPELlgNWhE1znq+qwJtW5Oi2viEzc=
+github.com/hashicorp/go-rootcerts v1.0.2/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8=
+github.com/hashicorp/go-secure-stdlib/parseutil v0.2.0 h1:U+kC2dOhMFQctRfhK0gRctKAPTloZdMU5ZJxaesJ/VM=
+github.com/hashicorp/go-secure-stdlib/parseutil v0.2.0/go.mod h1:Ll013mhdmsVDuoIXVfBtvgGJsXDYkTw1kooNcoCXuE0=
+github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 h1:kes8mmyCpxJsI7FTwtzRqEy9CdjCtrXrXGuOpxEA7Ts=
+github.com/hashicorp/go-secure-stdlib/strutil v0.1.2/go.mod h1:Gou2R9+il93BqX25LAKCLuM+y9U2T4hlwvT1yprcna4=
+github.com/hashicorp/go-sockaddr v1.0.7 h1:G+pTkSO01HpR5qCxg7lxfsFEZaG+C0VssTy/9dbT+Fw=
+github.com/hashicorp/go-sockaddr v1.0.7/go.mod h1:FZQbEYa1pxkQ7WLpyXJ6cbjpT8q0YgQaK/JakXqGyWw=
+github.com/hashicorp/hcl v1.0.1-vault-7 h1:ag5OxFVy3QYTFTJODRzTKVZ6xvdfLLCA1cy/Y6xGI0I=
+github.com/hashicorp/hcl v1.0.1-vault-7/go.mod h1:XYhtn6ijBSAj6n4YqAaf7RBPS4I06AItNorpy+MoQNM=
+github.com/hashicorp/vault/api v1.22.0 h1:+HYFquE35/B74fHoIeXlZIP2YADVboaPjaSicHEZiH0=
+github.com/hashicorp/vault/api v1.22.0/go.mod h1:IUZA2cDvr4Ok3+NtK2Oq/r+lJeXkeCrHRmqdyWfpmGM=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.18.4 h1:RPhnKRAQ4Fh8zU2FY/6ZFDwTVTxgJ/EMydqSTzE9a2c=
@@ -159,6 +188,8 @@ github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHP
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
@@ -208,6 +239,8 @@ github.com/prometheus/procfs v0.20.1 h1:XwbrGOIplXW/AU3YhIhLODXMJYyC1isLFfYCsTEy
 github.com/prometheus/procfs v0.20.1/go.mod h1:o9EMBZGRyvDrSPH1RqdxhojkuXstoe4UlK79eF5TGGo=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
+github.com/ryanuber/go-glob v1.0.0 h1:iQh3xXAumdQ+4Ufa5b25cRpC5TYKlno6hsv6Cb3pkBk=
+github.com/ryanuber/go-glob v1.0.0/go.mod h1:807d1WSdnB0XRJzKNil9Om6lcp/3a0v4qIHxIXzX/Yc=
 github.com/segmentio/asm v1.2.1 h1:DTNbBqs57ioxAD4PrArqftgypG4/qNpXoJx8TVXxPR0=
 github.com/segmentio/asm v1.2.1/go.mod h1:BqMnlJP91P8d+4ibuonYZw9mfnzI9HfxselHZr5aAcs=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
--- a/api/edge/bff/interface/api/config.go
+++ b/api/edge/bff/interface/api/config.go
@@ -1,6 +1,7 @@
 package api

 import (
+	"github.com/tech/sendico/pkg/vault/kv"
 	mwa "github.com/tech/sendico/server/interface/middleware"
 	fsc "github.com/tech/sendico/server/interface/services/fileservice/config"
 )
@@ -13,6 +14,7 @@ type Config struct {
 	PaymentOrchestrator *PaymentOrchestratorConfig `yaml:"payment_orchestrator"`
 	PaymentQuotation    *PaymentOrchestratorConfig `yaml:"payment_quotation"`
 	PaymentMethods      *PaymentOrchestratorConfig `yaml:"payment_methods"`
+	Callbacks           *CallbacksConfig           `yaml:"callbacks"`
 }

 type ChainGatewayConfig struct {
@@ -45,3 +47,12 @@ type PaymentOrchestratorConfig struct {
 	CallTimeoutSeconds int    `yaml:"call_timeout_seconds"`
 	Insecure           bool   `yaml:"insecure"`
 }
+
+type CallbacksConfig struct {
+	DefaultEventTypes []string  `yaml:"default_event_types"`
+	DefaultStatus     string    `yaml:"default_status"`
+	SecretPathPrefix  string    `yaml:"secret_path_prefix"`
+	SecretField       string    `yaml:"secret_field"`
+	SecretLengthBytes int       `yaml:"secret_length_bytes"`
+	Vault             kv.Config `yaml:"vault"`
+}
--- a/api/edge/bff/interface/services/callbacks/callbacks.go
+++ b/api/edge/bff/interface/services/callbacks/callbacks.go
@@ -0,0 +1,11 @@
+package callbacks
+
+import (
+	"github.com/tech/sendico/pkg/mservice"
+	"github.com/tech/sendico/server/interface/api"
+	"github.com/tech/sendico/server/internal/server/callbacksimp"
+)
+
+func Create(a api.API) (mservice.MicroService, error) {
+	return callbacksimp.CreateAPI(a)
+}
--- a/api/edge/bff/internal/api/api.go
+++ b/api/edge/bff/internal/api/api.go
@@ -12,6 +12,7 @@ import (
 	"github.com/tech/sendico/pkg/mservice"
 	"github.com/tech/sendico/server/interface/api"
 	"github.com/tech/sendico/server/interface/services/account"
+	"github.com/tech/sendico/server/interface/services/callbacks"
 	"github.com/tech/sendico/server/interface/services/invitation"
 	"github.com/tech/sendico/server/interface/services/ledger"
 	"github.com/tech/sendico/server/interface/services/logo"
@@ -91,6 +92,7 @@ func (a *APIImp) installServices() error {
 	srvf = append(srvf, wallet.Create)
 	srvf = append(srvf, ledger.Create)
 	srvf = append(srvf, recipient.Create)
+	srvf = append(srvf, callbacks.Create)
 	srvf = append(srvf, paymethod.Create)
 	srvf = append(srvf, payment.Create)

--- a/api/edge/bff/internal/server/callbacksimp/handlers.go
+++ b/api/edge/bff/internal/server/callbacksimp/handlers.go
@@ -0,0 +1,337 @@
+package callbacksimp
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/tech/sendico/pkg/api/http/response"
+	"github.com/tech/sendico/pkg/merrors"
+	"github.com/tech/sendico/pkg/model"
+	"github.com/tech/sendico/server/interface/api/sresponse"
+	mutil "github.com/tech/sendico/server/internal/mutil/param"
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.uber.org/zap"
+)
+
+type callbackWriteResponse struct {
+	AccessToken            sresponse.TokenData `json:"accessToken"`
+	Callbacks              []model.Callback    `json:"callbacks"`
+	GeneratedSigningSecret string              `json:"generatedSigningSecret,omitempty"`
+}
+
+func (a *CallbacksAPI) create(r *http.Request, account *model.Account, accessToken *sresponse.TokenData) http.HandlerFunc {
+	organizationRef, err := a.Oph.GetRef(r)
+	if err != nil {
+		a.Logger.Warn("Failed to parse organization reference", zap.Error(err), mutil.PLog(a.Oph, r))
+		return response.BadReference(a.Logger, a.Name(), a.Oph.Name(), a.Oph.GetID(r), err)
+	}
+
+	var callback model.Callback
+	if err := json.NewDecoder(r.Body).Decode(&callback); err != nil {
+		a.Logger.Warn("Failed to decode callback payload", zap.Error(err))
+		return response.BadPayload(a.Logger, a.Name(), err)
+	}
+
+	generatedSecret, err := a.normalizeAndPrepare(r.Context(), &callback, organizationRef, true)
+	if err != nil {
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	if err := a.DB.Create(r.Context(), *account.GetID(), organizationRef, &callback); err != nil {
+		a.Logger.Warn("Failed to create callback", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	return a.callbackResponse(&callback, accessToken, generatedSecret, true)
+}
+
+func (a *CallbacksAPI) update(r *http.Request, account *model.Account, accessToken *sresponse.TokenData) http.HandlerFunc {
+	var input model.Callback
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		a.Logger.Warn("Failed to decode callback payload", zap.Error(err))
+		return response.BadPayload(a.Logger, a.Name(), err)
+	}
+
+	callbackRef := *input.GetID()
+	if callbackRef.IsZero() {
+		return response.Auto(a.Logger, a.Name(), merrors.InvalidArgument("callback id is required", "id"))
+	}
+
+	var existing model.Callback
+	if err := a.db.Get(r.Context(), *account.GetID(), callbackRef, &existing); err != nil {
+		a.Logger.Warn("Failed to fetch callback before update", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	mergeCallbackMutable(&existing, &input)
+	generatedSecret, err := a.normalizeAndPrepare(r.Context(), &existing, existing.OrganizationRef, true)
+	if err != nil {
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	if err := a.DB.Update(r.Context(), *account.GetID(), &existing); err != nil {
+		a.Logger.Warn("Failed to update callback", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	return a.callbackResponse(&existing, accessToken, generatedSecret, false)
+}
+
+func (a *CallbacksAPI) rotateSecret(r *http.Request, account *model.Account, accessToken *sresponse.TokenData) http.HandlerFunc {
+	callbackRef, err := a.Cph.GetRef(r)
+	if err != nil {
+		a.Logger.Warn("Failed to parse callback reference", zap.Error(err), mutil.PLog(a.Cph, r))
+		return response.BadReference(a.Logger, a.Name(), a.Cph.Name(), a.Cph.GetID(r), err)
+	}
+
+	var callback model.Callback
+	if err := a.db.Get(r.Context(), *account.GetID(), callbackRef, &callback); err != nil {
+		a.Logger.Warn("Failed to fetch callback for secret rotation", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	if callback.RetryPolicy.SigningMode != model.CallbackSigningModeHMACSHA256 {
+		return response.BadRequest(a.Logger, a.Name(), "invalid_signing_mode", "rotate-secret is available only for hmac_sha256 callbacks")
+	}
+
+	secretRef, generatedSecret, err := a.secrets.Provision(r.Context(), callback.OrganizationRef, callbackRef)
+	if err != nil {
+		a.Logger.Warn("Failed to rotate callback signing secret", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+	callback.RetryPolicy.SecretRef = secretRef
+
+	if err := a.DB.Update(r.Context(), *account.GetID(), &callback); err != nil {
+		a.Logger.Warn("Failed to persist rotated callback secret reference", zap.Error(err))
+		return response.Auto(a.Logger, a.Name(), err)
+	}
+
+	return a.callbackResponse(&callback, accessToken, generatedSecret, false)
+}
+
+func (a *CallbacksAPI) normalizeAndPrepare(
+	ctx context.Context,
+	callback *model.Callback,
+	organizationRef bson.ObjectID,
+	allowSecretGeneration bool,
+) (string, error) {
+	if callback == nil {
+		return "", merrors.InvalidArgument("callback payload is required")
+	}
+	if organizationRef.IsZero() {
+		return "", merrors.InvalidArgument("organization reference is required", "organizationRef")
+	}
+
+	callback.SetOrganizationRef(organizationRef)
+	callback.Name = strings.TrimSpace(callback.Name)
+	callback.Description = trimDescription(callback.Description)
+	callback.ClientID = strings.TrimSpace(callback.ClientID)
+	if callback.ClientID == "" {
+		callback.ClientID = organizationRef.Hex()
+	}
+
+	callback.URL = strings.TrimSpace(callback.URL)
+	if callback.URL == "" {
+		return "", merrors.InvalidArgument("url is required", "url")
+	}
+	if err := validateCallbackURL(callback.URL); err != nil {
+		return "", err
+	}
+	if callback.Name == "" {
+		callback.Name = callback.URL
+	}
+
+	status, err := normalizeStatus(callback.Status, a.config.DefaultStatus)
+	if err != nil {
+		return "", err
+	}
+	callback.Status = status
+	callback.EventTypes = normalizeEventTypes(callback.EventTypes, a.config.DefaultEventTypes)
+
+	callback.RetryPolicy.MinDelayMS = defaultInt(callback.RetryPolicy.MinDelayMS, defaultRetryMinDelayMS)
+	callback.RetryPolicy.MaxDelayMS = defaultInt(callback.RetryPolicy.MaxDelayMS, defaultRetryMaxDelayMS)
+	if callback.RetryPolicy.MaxDelayMS < callback.RetryPolicy.MinDelayMS {
+		callback.RetryPolicy.MaxDelayMS = callback.RetryPolicy.MinDelayMS
+	}
+	callback.RetryPolicy.MaxAttempts = defaultInt(callback.RetryPolicy.MaxAttempts, defaultRetryMaxAttempts)
+	callback.RetryPolicy.RequestTimeoutMS = defaultInt(callback.RetryPolicy.RequestTimeoutMS, defaultRetryRequestTimeoutMS)
+	callback.RetryPolicy.Headers = normalizeHeaders(callback.RetryPolicy.Headers)
+
+	mode, err := normalizeSigningMode(callback.RetryPolicy.SigningMode)
+	if err != nil {
+		return "", err
+	}
+	callback.RetryPolicy.SigningMode = mode
+
+	callback.RetryPolicy.SecretRef = strings.TrimSpace(callback.RetryPolicy.SecretRef)
+	switch callback.RetryPolicy.SigningMode {
+	case model.CallbackSigningModeNone:
+		callback.RetryPolicy.SecretRef = ""
+		return "", nil
+	case model.CallbackSigningModeHMACSHA256:
+		if callback.RetryPolicy.SecretRef != "" {
+			return "", nil
+		}
+		if !allowSecretGeneration {
+			return "", merrors.InvalidArgument("secretRef is required for hmac_sha256 callbacks", "retryPolicy.secretRef")
+		}
+		if callback.GetID().IsZero() {
+			callback.SetID(bson.NewObjectID())
+		}
+		secretRef, generatedSecret, err := a.secrets.Provision(ctx, organizationRef, *callback.GetID())
+		if err != nil {
+			return "", err
+		}
+		callback.RetryPolicy.SecretRef = secretRef
+		return generatedSecret, nil
+	default:
+		return "", merrors.InvalidArgument("unsupported signing mode", "retryPolicy.signingMode")
+	}
+}
+
+func (a *CallbacksAPI) callbackResponse(
+	callback *model.Callback,
+	accessToken *sresponse.TokenData,
+	generatedSecret string,
+	created bool,
+) http.HandlerFunc {
+	if callback == nil || accessToken == nil {
+		return response.Internal(a.Logger, a.Name(), merrors.Internal("failed to build callback response"))
+	}
+
+	resp := callbackWriteResponse{
+		AccessToken:            *accessToken,
+		Callbacks:              []model.Callback{*callback},
+		GeneratedSigningSecret: generatedSecret,
+	}
+	if created {
+		return response.Created(a.Logger, resp)
+	}
+	return response.Ok(a.Logger, resp)
+}
+
+func normalizeStatus(raw, fallback model.CallbackStatus) (model.CallbackStatus, error) {
+	candidate := strings.ToLower(strings.TrimSpace(string(raw)))
+	if candidate == "" {
+		candidate = strings.ToLower(strings.TrimSpace(string(fallback)))
+	}
+
+	switch candidate {
+	case "", "active", "enabled":
+		return model.CallbackStatusActive, nil
+	case "disabled", "inactive":
+		return model.CallbackStatusDisabled, nil
+	default:
+		return "", merrors.InvalidArgument("unsupported callback status", "status")
+	}
+}
+
+func normalizeSigningMode(raw model.CallbackSigningMode) (model.CallbackSigningMode, error) {
+	mode := strings.ToLower(strings.TrimSpace(string(raw)))
+	switch mode {
+	case "", "none":
+		return model.CallbackSigningModeNone, nil
+	case "hmac_sha256", "hmac-sha256", "hmac":
+		return model.CallbackSigningModeHMACSHA256, nil
+	default:
+		return "", merrors.InvalidArgument("unsupported callback signing mode", "retryPolicy.signingMode")
+	}
+}
+
+func normalizeEventTypes(eventTypes []string, defaults []string) []string {
+	if len(eventTypes) == 0 {
+		return normalizeEventTypes(defaults, nil)
+	}
+	seen := make(map[string]struct{}, len(eventTypes))
+	out := make([]string, 0, len(eventTypes))
+	for _, eventType := range eventTypes {
+		value := strings.TrimSpace(eventType)
+		if value == "" {
+			continue
+		}
+		if _, exists := seen[value]; exists {
+			continue
+		}
+		seen[value] = struct{}{}
+		out = append(out, value)
+	}
+	if len(out) == 0 {
+		if len(defaults) > 0 {
+			return normalizeEventTypes(defaults, nil)
+		}
+		return []string{model.PaymentStatusUpdatedType}
+	}
+	return out
+}
+
+func normalizeHeaders(headers map[string]string) map[string]string {
+	if len(headers) == 0 {
+		return nil
+	}
+	out := make(map[string]string, len(headers))
+	for key, value := range headers {
+		k := strings.TrimSpace(key)
+		if k == "" {
+			continue
+		}
+		out[k] = strings.TrimSpace(value)
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+func mergeCallbackMutable(dst, src *model.Callback) {
+	dst.Describable = src.Describable
+	dst.ClientID = src.ClientID
+	dst.Status = src.Status
+	dst.URL = src.URL
+	dst.EventTypes = append([]string(nil), src.EventTypes...)
+	dst.RetryPolicy = model.CallbackRetryPolicy{
+		MinDelayMS:       src.RetryPolicy.MinDelayMS,
+		MaxDelayMS:       src.RetryPolicy.MaxDelayMS,
+		SigningMode:      src.RetryPolicy.SigningMode,
+		SecretRef:        src.RetryPolicy.SecretRef,
+		Headers:          normalizeHeaders(src.RetryPolicy.Headers),
+		MaxAttempts:      src.RetryPolicy.MaxAttempts,
+		RequestTimeoutMS: src.RetryPolicy.RequestTimeoutMS,
+	}
+}
+
+func defaultInt(value, fallback int) int {
+	if value > 0 {
+		return value
+	}
+	return fallback
+}
+
+func trimDescription(in *string) *string {
+	if in == nil {
+		return nil
+	}
+	value := strings.TrimSpace(*in)
+	if value == "" {
+		return nil
+	}
+	return &value
+}
+
+func validateCallbackURL(raw string) error {
+	parsed, err := url.ParseRequestURI(raw)
+	if err != nil {
+		return merrors.InvalidArgument("url is invalid", "url")
+	}
+	switch strings.ToLower(strings.TrimSpace(parsed.Scheme)) {
+	case "https", "http":
+	default:
+		return merrors.InvalidArgument("url scheme must be http or https", "url")
+	}
+	if strings.TrimSpace(parsed.Host) == "" {
+		return merrors.InvalidArgument("url host is required", "url")
+	}
+	return nil
+}
--- a/api/edge/bff/internal/server/callbacksimp/secrets.go
+++ b/api/edge/bff/internal/server/callbacksimp/secrets.go
@@ -0,0 +1,178 @@
+package callbacksimp
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/base64"
+	"path"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/tech/sendico/pkg/merrors"
+	"github.com/tech/sendico/pkg/mlogger"
+	"github.com/tech/sendico/pkg/vault/kv"
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"go.uber.org/zap"
+)
+
+type signingSecretManager interface {
+	Provision(ctx context.Context, organizationRef, callbackRef bson.ObjectID) (secretRef string, generatedSecret string, err error)
+}
+
+type vaultSigningSecretManager struct {
+	logger       mlogger.Logger
+	store        kv.Client
+	pathPrefix   string
+	field        string
+	secretLength int
+}
+
+const (
+	metricsResultSuccess = "success"
+	metricsResultError   = "error"
+)
+
+var (
+	signingSecretMetricsOnce sync.Once
+	signingSecretStatus      *prometheus.CounterVec
+	signingSecretLatency     *prometheus.HistogramVec
+)
+
+func ensureSigningSecretMetrics() {
+	signingSecretMetricsOnce.Do(func() {
+		signingSecretStatus = promauto.NewCounterVec(prometheus.CounterOpts{
+			Namespace: "sendico",
+			Subsystem: "bff_callbacks",
+			Name:      "signing_secret_provision_total",
+			Help:      "Total callback signing secret provisioning attempts.",
+		}, []string{"result"})
+		signingSecretLatency = promauto.NewHistogramVec(prometheus.HistogramOpts{
+			Namespace: "sendico",
+			Subsystem: "bff_callbacks",
+			Name:      "signing_secret_provision_duration_seconds",
+			Help:      "Duration of callback signing secret provisioning attempts.",
+			Buckets:   prometheus.DefBuckets,
+		}, []string{"result"})
+	})
+}
+
+func newSigningSecretManager(logger mlogger.Logger, cfg callbacksConfig) (signingSecretManager, error) {
+	if err := cfg.validate(); err != nil {
+		return nil, err
+	}
+	if logger == nil {
+		logger = zap.NewNop()
+	}
+
+	manager := &vaultSigningSecretManager{
+		logger:       logger.Named("callbacks_secrets"),
+		pathPrefix:   strings.Trim(strings.TrimSpace(cfg.SecretPathPrefix), "/"),
+		field:        strings.TrimSpace(cfg.SecretField),
+		secretLength: cfg.SecretLengthBytes,
+	}
+	if manager.pathPrefix == "" {
+		manager.pathPrefix = defaultSigningSecretPathPrefix
+	}
+	if manager.field == "" {
+		manager.field = defaultSigningSecretField
+	}
+
+	if isVaultConfigEmpty(cfg.Vault) {
+		manager.logger.Warn("Callbacks Vault config is not set; secret generation requires explicit secretRef in payloads")
+		ensureSigningSecretMetrics()
+		return manager, nil
+	}
+
+	store, err := kv.New(kv.Options{
+		Logger: manager.logger,
+		Config: kv.Config{
+			Address:      strings.TrimSpace(cfg.Vault.Address),
+			TokenEnv:     strings.TrimSpace(cfg.Vault.TokenEnv),
+			TokenFileEnv: strings.TrimSpace(cfg.Vault.TokenFileEnv),
+			TokenFile:    strings.TrimSpace(cfg.Vault.TokenFile),
+			Namespace:    strings.TrimSpace(cfg.Vault.Namespace),
+			MountPath:    strings.TrimSpace(cfg.Vault.MountPath),
+		},
+		Component: "bff callbacks signing secret manager",
+	})
+	if err != nil {
+		return nil, err
+	}
+	manager.store = store
+	ensureSigningSecretMetrics()
+
+	return manager, nil
+}
+
+func (m *vaultSigningSecretManager) Provision(
+	ctx context.Context,
+	organizationRef,
+	callbackRef bson.ObjectID,
+) (string, string, error) {
+	start := time.Now()
+	result := metricsResultSuccess
+	defer func() {
+		signingSecretStatus.WithLabelValues(result).Inc()
+		signingSecretLatency.WithLabelValues(result).Observe(time.Since(start).Seconds())
+	}()
+
+	if organizationRef.IsZero() {
+		result = metricsResultError
+		return "", "", merrors.InvalidArgument("organization reference is required", "organizationRef")
+	}
+	if callbackRef.IsZero() {
+		result = metricsResultError
+		return "", "", merrors.InvalidArgument("callback reference is required", "callbackRef")
+	}
+	if m.store == nil {
+		result = metricsResultError
+		return "", "", merrors.InvalidArgument("callbacks vault config is required to generate signing secrets", "api.callbacks.vault")
+	}
+
+	secret, err := generateSigningSecret(m.secretLength)
+	if err != nil {
+		result = metricsResultError
+		return "", "", err
+	}
+
+	secretPath := path.Join(m.pathPrefix, organizationRef.Hex(), callbackRef.Hex())
+	payload := map[string]interface{}{
+		m.field:            secret,
+		"organization_ref": organizationRef.Hex(),
+		"callback_ref":     callbackRef.Hex(),
+		"updated_at":       time.Now().UTC().Format(time.RFC3339Nano),
+	}
+	if err := m.store.Put(ctx, secretPath, payload); err != nil {
+		result = metricsResultError
+		m.logger.Warn("Failed to store callback signing secret", zap.String("path", secretPath), zap.Error(err))
+		return "", "", err
+	}
+
+	secretRef := "vault:" + secretPath + "#" + m.field
+	m.logger.Info("Callback signing secret stored", zap.String("secret_ref", secretRef), zap.String("callback_ref", callbackRef.Hex()))
+
+	return secretRef, secret, nil
+}
+
+func isVaultConfigEmpty(cfg VaultConfig) bool {
+	return strings.TrimSpace(cfg.Address) == "" &&
+		strings.TrimSpace(cfg.TokenEnv) == "" &&
+		strings.TrimSpace(cfg.TokenFileEnv) == "" &&
+		strings.TrimSpace(cfg.TokenFile) == "" &&
+		strings.TrimSpace(cfg.MountPath) == "" &&
+		strings.TrimSpace(cfg.Namespace) == ""
+}
+
+func generateSigningSecret(length int) (string, error) {
+	if length <= 0 {
+		return "", merrors.InvalidArgument("secret length must be greater than zero", "secret_length")
+	}
+	raw := make([]byte, length)
+	if _, err := rand.Read(raw); err != nil {
+		return "", merrors.Internal("failed to generate signing secret: " + err.Error())
+	}
+	return base64.RawURLEncoding.EncodeToString(raw), nil
+}
--- a/api/edge/bff/internal/server/callbacksimp/service.go
+++ b/api/edge/bff/internal/server/callbacksimp/service.go
@@ -0,0 +1,139 @@
+package callbacksimp
+
+import (
+	"context"
+
+	api "github.com/tech/sendico/pkg/api/http"
+	"github.com/tech/sendico/pkg/db/callbacks"
+	"github.com/tech/sendico/pkg/merrors"
+	"github.com/tech/sendico/pkg/model"
+	"github.com/tech/sendico/pkg/mservice"
+	eapi "github.com/tech/sendico/server/interface/api"
+	"github.com/tech/sendico/server/internal/server/papitemplate"
+	"go.uber.org/zap"
+)
+
+type CallbacksAPI struct {
+	papitemplate.ProtectedAPI[model.Callback]
+	db      callbacks.DB
+	secrets signingSecretManager
+	config  callbacksConfig
+}
+
+func (a *CallbacksAPI) Name() mservice.Type {
+	return mservice.Callbacks
+}
+
+func (a *CallbacksAPI) Finish(_ context.Context) error {
+	return nil
+}
+
+func CreateAPI(apiCtx eapi.API) (*CallbacksAPI, error) {
+	dbFactory := func() (papitemplate.ProtectedDB[model.Callback], error) {
+		return apiCtx.DBFactory().NewCallbacksDB()
+	}
+
+	res := &CallbacksAPI{
+		config: newCallbacksConfig(apiCtx.Config().Callbacks),
+	}
+
+	p, err := papitemplate.CreateAPI(apiCtx, dbFactory, mservice.Organizations, mservice.Callbacks)
+	if err != nil {
+		return nil, err
+	}
+	res.ProtectedAPI = *p.
+		WithNoCreateNotification().
+		WithNoUpdateNotification().
+		WithNoDeleteNotification().
+		WithCreateHandler(res.create).
+		WithUpdateHandler(res.update).
+		Build()
+
+	if res.db, err = apiCtx.DBFactory().NewCallbacksDB(); err != nil {
+		res.Logger.Warn("Failed to create callbacks database", zap.Error(err))
+		return nil, err
+	}
+
+	if res.secrets, err = newSigningSecretManager(res.Logger, res.config); err != nil {
+		res.Logger.Warn("Failed to initialize callbacks signing secret manager", zap.Error(err))
+		return nil, err
+	}
+
+	apiCtx.Register().AccountHandler(res.Name(), res.Cph.AddRef("/rotate-secret"), api.Post, res.rotateSecret)
+
+	return res, nil
+}
+
+const (
+	defaultCallbackStatus           = model.CallbackStatusActive
+	defaultRetryMaxAttempts         = 8
+	defaultRetryMinDelayMS          = 1000
+	defaultRetryMaxDelayMS          = 300000
+	defaultRetryRequestTimeoutMS    = 10000
+	defaultSigningSecretLengthBytes = 32
+	defaultSigningSecretField       = "value"
+	defaultSigningSecretPathPrefix  = "sendico/callbacks"
+)
+
+type callbacksConfig struct {
+	DefaultEventTypes []string
+	DefaultStatus     model.CallbackStatus
+	SecretPathPrefix  string
+	SecretField       string
+	SecretLengthBytes int
+	Vault             VaultConfig
+}
+
+type VaultConfig struct {
+	Address      string
+	TokenEnv     string
+	TokenFileEnv string
+	TokenFile    string
+	Namespace    string
+	MountPath    string
+}
+
+func newCallbacksConfig(source *eapi.CallbacksConfig) callbacksConfig {
+	cfg := callbacksConfig{
+		DefaultEventTypes: []string{model.PaymentStatusUpdatedType},
+		DefaultStatus:     defaultCallbackStatus,
+		SecretPathPrefix:  defaultSigningSecretPathPrefix,
+		SecretField:       defaultSigningSecretField,
+		SecretLengthBytes: defaultSigningSecretLengthBytes,
+	}
+	if source == nil {
+		return cfg
+	}
+
+	if source.SecretPathPrefix != "" {
+		cfg.SecretPathPrefix = source.SecretPathPrefix
+	}
+	if source.SecretField != "" {
+		cfg.SecretField = source.SecretField
+	}
+	if source.SecretLengthBytes > 0 {
+		cfg.SecretLengthBytes = source.SecretLengthBytes
+	}
+	if len(source.DefaultEventTypes) > 0 {
+		cfg.DefaultEventTypes = source.DefaultEventTypes
+	}
+	if source.DefaultStatus != "" {
+		cfg.DefaultStatus = model.CallbackStatus(source.DefaultStatus)
+	}
+	cfg.Vault = VaultConfig{
+		Address:      source.Vault.Address,
+		TokenEnv:     source.Vault.TokenEnv,
+		TokenFileEnv: source.Vault.TokenFileEnv,
+		TokenFile:    source.Vault.TokenFile,
+		Namespace:    source.Vault.Namespace,
+		MountPath:    source.Vault.MountPath,
+	}
+	return cfg
+}
+
+func (c callbacksConfig) validate() error {
+	if c.SecretLengthBytes <= 0 {
+		return merrors.InvalidArgument("callbacks signing secret length must be greater than zero", "api.callbacks.secret_length_bytes")
+	}
+	return nil
+}
--- a/api/edge/callbacks/internal/storage/service.go
+++ b/api/edge/callbacks/internal/storage/service.go
@@ -13,6 +13,7 @@ import (
 	"github.com/tech/sendico/pkg/db/storable"
 	"github.com/tech/sendico/pkg/merrors"
 	"github.com/tech/sendico/pkg/mlogger"
+	"github.com/tech/sendico/pkg/mservice"
 	mutil "github.com/tech/sendico/pkg/mutil/db"
 	"go.mongodb.org/mongo-driver/v2/bson"
 	"go.mongodb.org/mongo-driver/v2/mongo"
@@ -22,7 +23,7 @@ import (
 const (
 	inboxCollection     string = "inbox"
 	tasksCollection     string = "tasks"
-	endpointsCollection string = "endpoints"
+	endpointsCollection string = mservice.Callbacks
 )

 type mongoRepository struct {