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Merged
Pavan-SAP merged 1 commit into from
Mar 16, 2026
Merged

[Feat] server: subscription domain via payload supported #352

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139 changes: 105 additions & 34 deletions cmd/server/internal/handler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@ const (
TenantNotFound = "tenant not found"
)

const SubscriptionDomain = "subscription domain"
const ErrorOccurred = "Error occurred "
const InvalidRequestMethod = "invalid request method"
const AuthorizationCheckFailed = "authorization check failed"
Expand All @@ -81,6 +82,8 @@ const (
type RequestInfo struct {
// One of "SMS" or "SaaS"
subscriptionType subscriptionType
// subscription domain from the subscription request, used for constructing the subscription URL. If not present, existing fallbacks will be used
subscriptionDomain string
// payload Details
payload *payloadDetails
// header details
Expand Down Expand Up @@ -129,12 +132,12 @@ type callbackResponse struct {

type SaaSCallbackResponse struct {
callbackResponse `json:",inline"`
SubscriptionUrl string `json:"subscriptionUrl"`
SubscriptionUrl string `json:"subscriptionUrl,omitempty"`
}

type SmsCallbackResponse struct {
callbackResponse `json:",inline"`
ApplicationUrl string `json:"applicationUrl"`
ApplicationUrl string `json:"applicationUrl,omitempty"`
}

type CallbackReqInfo struct {
Expand Down Expand Up @@ -173,6 +176,12 @@ func (s *SubscriptionHandler) CreateTenant(reqInfo *RequestInfo) *Result {
return &Result{Tenant: nil, Message: err.Error()}
}

appUrl, err := s.getAppURL(reqInfo.subscriptionDomain, reqInfo.payload.subdomain, ca)
if err != nil {
util.LogError(err, ErrorOccurred, TenantProvisioning, ca, nil)
return &Result{Tenant: nil, Message: "Error constructing subscription URL: " + err.Error()}
}

// Check if A CRO for CAPTenant already exists
tenant := s.getTenantByBtpAppIdentifier(ca.Spec.GlobalAccountId, reqInfo.payload.appName, reqInfo.payload.tenantId, ca.Namespace, TenantProvisioning).Tenant

Expand All @@ -195,26 +204,26 @@ func (s *SubscriptionHandler) CreateTenant(reqInfo *RequestInfo) *Result {
if tenant != nil {
tenantIn := tenantInfo{tenantId: reqInfo.payload.tenantId, tenantSubDomain: reqInfo.payload.subdomain}
callbackReqInfo := s.getCallbackReqInfo(reqInfo.subscriptionType, reqInfo.headerDetails.callbackInfo, saasData, smsData)
s.initializeCallback(tenant.Name, ca, callbackReqInfo, tenantIn, true)
}

// Tenant created/exists
message := func(isCreated, isUpdated bool) string {
if isCreated {
return ResourceCreated
} else if isUpdated {
return ResourceUpdated
} else {
return ResourceFound
}
s.initializeCallback(appUrl, tenant.Name, ca, callbackReqInfo, tenantIn, true)
}

if created {
util.LogInfo("Tenant successfully created", TenantProvisioning, ca, tenant, "message", message(created, updated))
util.LogInfo("Tenant successfully created", TenantProvisioning, ca, tenant, "message", getMessage(created, updated))
} else if updated {
util.LogInfo("Tenant successfully updated", TenantProvisioning, ca, tenant, "message", message(created, updated))
util.LogInfo("Tenant successfully updated", TenantProvisioning, ca, tenant, "message", getMessage(created, updated))
}
return &Result{Tenant: tenant, Message: getMessage(created, updated)}
}

func getMessage(isCreated, isUpdated bool) string {
// Tenant created/exists
if isCreated {
return ResourceCreated
} else if isUpdated {
return ResourceUpdated
} else {
return ResourceFound
}
return &Result{Tenant: tenant, Message: message(created, updated)}
}

func (s *SubscriptionHandler) createTenant(reqInfo *RequestInfo, ca *v1alpha1.CAPApplication) (tenant *v1alpha1.CAPTenant, err error) {
Expand Down Expand Up @@ -495,7 +504,7 @@ func (s *SubscriptionHandler) DeleteTenant(reqInfo *RequestInfo) *Result {

tenantIn := tenantInfo{tenantId: reqInfo.payload.tenantId, tenantSubDomain: reqInfo.payload.subdomain}
callbackReqInfo := s.getCallbackReqInfo(reqInfo.subscriptionType, reqInfo.headerDetails.callbackInfo, saasData, smsData)
s.initializeCallback(tenant.Name, ca, callbackReqInfo, tenantIn, false)
s.initializeCallback("", tenant.Name, ca, callbackReqInfo, tenantIn, false)

return &Result{Tenant: tenant, Message: ResourceDeleted}
}
Expand Down Expand Up @@ -591,20 +600,12 @@ func (s *SubscriptionHandler) checkCertIssuerAndSubject(xForwardedClientCert str
return nil
}

func (s *SubscriptionHandler) initializeCallback(tenantName string, ca *v1alpha1.CAPApplication, callbackReqInfo *CallbackReqInfo, tenantIn tenantInfo, isProvisioning bool) {
subscriptionDomain := ca.Annotations[AnnotationSubscriptionDomain]
if subscriptionDomain == "" {
subscriptionDomain = s.getPrimaryDomain(ca)
}

appUrl := "https://" + tenantIn.tenantSubDomain + "." + subscriptionDomain
asyncCallbackPath := callbackReqInfo.CallbackPath
util.LogInfo("Callback initialized", TenantProvisioning, ca, nil, "subscription URL", appUrl, "async callback path", asyncCallbackPath, "tenantName", tenantName)

func (s *SubscriptionHandler) initializeCallback(appUrl, tenantName string, ca *v1alpha1.CAPApplication, callbackReqInfo *CallbackReqInfo, tenantIn tenantInfo, isProvisioning bool) {
step := TenantProvisioning
if !isProvisioning {
step = TenantDeprovisioning
}
util.LogInfo("Callback initialized", step, ca, nil, "subscription URL", appUrl, "async callback path", callbackReqInfo.CallbackPath, "tenantName", tenantName)

go func() {
// create a context for tenant checks and outgoing requests
Expand Down Expand Up @@ -635,10 +636,65 @@ func (s *SubscriptionHandler) initializeCallback(tenantName string, ca *v1alpha1
} else {
additionalOutput = nil
}
s.handleAsyncCallback(ctx, callbackReqInfo, status, asyncCallbackPath, appUrl, additionalOutput, isProvisioning)

s.handleAsyncCallback(ctx, callbackReqInfo, status, callbackReqInfo.CallbackPath, appUrl, additionalOutput, isProvisioning)
}()
}

util.LogInfo("Waiting for async callback after checks...", step, ca, nil, "tenantName", tenantName)
func (s *SubscriptionHandler) getAppURL(payloadSubscriptionDomain, tenantSubdomain string, ca *v1alpha1.CAPApplication) (string, error) {
needsValidaton := true
var subscriptionDomain string
// Check if subscription domain is provided in the request payload.
if payloadSubscriptionDomain != "" {
subscriptionDomain = payloadSubscriptionDomain
util.LogInfo("Using subscription domain from request payload", TenantProvisioning, ca, nil, SubscriptionDomain, subscriptionDomain)
} else {
// Fallback:
// First, check if subscription domain is provided in the CAPApplication annotation. If not, fallback to calculating the primary domain from the CAPApplication domain refs and use that as the subscription domain.
subscriptionDomain = ca.Annotations[AnnotationSubscriptionDomain]
if subscriptionDomain == "" {
subscriptionDomain = s.getPrimaryDomain(ca)
needsValidaton = false
util.LogInfo("Using subscription domain from fallback 'primary' calculation", TenantProvisioning, ca, nil, SubscriptionDomain, subscriptionDomain)
} else {
util.LogInfo("Using subscription domain from CAPApplication annotation", TenantProvisioning, ca, nil, SubscriptionDomain, subscriptionDomain)
}
}

if needsValidaton {
err := s.validateDomain(subscriptionDomain, ca.Namespace)
if err != nil {
return "", err
}
}

return "https://" + tenantSubdomain + "." + subscriptionDomain, nil
}

func (s *SubscriptionHandler) validateDomain(domain, namespace string) error {
// First check for Domains in the apps namespace
domainsList, err := s.Clientset.SmeV1alpha1().Domains(namespace).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return err
}
for _, d := range domainsList.Items {
if d.Spec.Domain == domain {
return nil
}
}

// Check for ClusterDomains if not found in the namespace
clusterDomainsList, err := s.Clientset.SmeV1alpha1().ClusterDomains(metav1.NamespaceAll).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return err
}
for _, cd := range clusterDomainsList.Items {
if cd.Spec.Domain == domain {
return nil
}
}

return fmt.Errorf("domain %s not found in Domains or ClusterDomains", domain)
}

func (s *SubscriptionHandler) getPrimaryDomain(ca *v1alpha1.CAPApplication) string {
Expand Down Expand Up @@ -899,6 +955,7 @@ func (s *SubscriptionHandler) handleAsyncCallback(ctx context.Context, callbackR
Message: checkMatch(status, checkMatch(isProvisioning, ProvisioningSucceededMessage, DeprovisioningSucceededMessage), checkMatch(isProvisioning, ProvisioningFailedMessage, DeprovisioningFailedMessage)),
AdditionalOutput: additionalOutput,
}

switch callbackReqInfo.SubscriptionType {
case SMS:
payload, _ = json.Marshal(&SmsCallbackResponse{
Expand Down Expand Up @@ -983,7 +1040,7 @@ func (s *SubscriptionHandler) HandleSMSRequest(w http.ResponseWriter, req *http.
}

func ProcessRequest(req *http.Request, subscriptionType subscriptionType) (*RequestInfo, error) {
var subscriptionGUID, tenantId, subdomain, globalAccountId, providerSubaccountId, appName string
var subscriptionGUID, tenantId, subdomain, globalAccountId, providerSubaccountId, appName, subscriptionDomain string
var jsonPayload map[string]any

if !(req.Method == http.MethodDelete && subscriptionType == SMS) {
Expand All @@ -1010,6 +1067,7 @@ func ProcessRequest(req *http.Request, subscriptionType subscriptionType) (*Requ
rootApp := jsonPayload["rootApplication"].(map[string]any)
providerSubaccountId = rootApp["providerSubaccountId"].(string)
appName = rootApp["appName"].(string)
subscriptionDomain = getSubscriptionDomain(rootApp)
case http.MethodDelete:
// get paramater from URL
subscriptionGUID = req.URL.Query().Get("subscriptionGUID")
Expand All @@ -1032,6 +1090,7 @@ func ProcessRequest(req *http.Request, subscriptionType subscriptionType) (*Requ
globalAccountId = jsonPayload["globalAccountGUID"].(string)
providerSubaccountId = jsonPayload["providerSubaccountId"].(string)
appName = jsonPayload["subscriptionAppName"].(string)
subscriptionDomain = getSubscriptionDomain(jsonPayload)
}

payload := &payloadDetails{
Expand All @@ -1045,12 +1104,24 @@ func ProcessRequest(req *http.Request, subscriptionType subscriptionType) (*Requ
raw: &jsonPayload,
}
return &RequestInfo{
subscriptionType: subscriptionType,
payload: payload,
headerDetails: &headerDetails,
subscriptionType: subscriptionType,
subscriptionDomain: subscriptionDomain,
payload: payload,
headerDetails: &headerDetails,
}, nil
}

func getSubscriptionDomain(payload map[string]any) string {
if subscriptionParams, ok := payload["subscriptionParams"]; ok {
if subscriptionParamsMap, ok := subscriptionParams.(map[string]any); ok {
if subscriptionDomain, ok := subscriptionParamsMap["subscriptionDomain"]; ok {
return subscriptionDomain.(string)
}
}
}
return ""
}

func NewSubscriptionHandler(clientset versioned.Interface, kubeClienset kubernetes.Interface) *SubscriptionHandler {
return &SubscriptionHandler{Clientset: clientset, KubeClienset: kubeClienset, httpClientGenerator: &httpClientGeneratorImpl{}}
}
Expand Down
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