Add openAPI endpoint

Makefile

@@ -46,7 +46,7 @@ emailsender_image_repository:=$(EMAILSENDER_IMAGE)
 external_image_registry:=quay.io/rhacs-eng
 internal_image_registry:=image-registry.openshift-image-registry.svc:5000
 
-DOCKER ?= docker
+DOCKER ?= podman
 DOCKER_CONFIG ?= "${HOME}/.docker"
 
 # Default Variables

emailsender/pkg/api/handlers.go

@@ -5,7 +5,21 @@ import (
 	"net/http"
 )
 
+// Represents Emailsender openAPI definition
+type openAPIHandler struct {
+	OpenAPIDefinition string
+}
+
+// NewOpenAPIHandler ...
+func NewOpenAPIHandler(openAPIDefinition string) *openAPIHandler {
+	return &openAPIHandler{openAPIDefinition}
+}
+
 // HealthCheckHandler returns 200 HTTP status code
 func HealthCheckHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 }
+
+func (h openAPIHandler) Get(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte(h.OpenAPIDefinition))
+}

emailsender/pkg/api/routes.go

@@ -12,6 +12,7 @@ import (
 	"github.com/pkg/errors"
 
 	"github.com/stackrox/acs-fleet-manager/emailsender/config"
+	"github.com/stackrox/acs-fleet-manager/emailsender/pkg/client"
 	acscsAPI "github.com/stackrox/acs-fleet-manager/pkg/api"
 	acscsErrors "github.com/stackrox/acs-fleet-manager/pkg/errors"
 	acscsHandlers "github.com/stackrox/acs-fleet-manager/pkg/handlers"
@@ -33,6 +34,7 @@ func SetupRoutes(authConfig config.AuthConfig, emailHandler *EmailHandler) (http
 func setupRoutes(authnHandlerFunc authnHandlerBuilder, authConfig config.AuthConfig, emailHandler *EmailHandler) (http.Handler, error) {
 	router := mux.NewRouter()
 	errorsHandler := acscsHandlers.NewErrorsHandler()
+	openAPIHandler := NewOpenAPIHandler(client.OpenAPIDefinition)
 
 	router.NotFoundHandler = http.HandlerFunc(acscsAPI.SendNotFound)
 	router.MethodNotAllowedHandler = http.HandlerFunc(acscsAPI.SendMethodNotAllowed)
@@ -55,6 +57,9 @@ func setupRoutes(authnHandlerFunc authnHandlerBuilder, authConfig config.AuthCon
 	// health endpoint
 	router.HandleFunc("/health", HealthCheckHandler).Methods("GET")
 
+	// openAPI definiton endpoint
+	router.HandleFunc("/openapi", openAPIHandler.Get).Methods("GET")
+
 	// errors endpoint
 	router.HandleFunc("/api/v1/acscsemail/errors/{id}", errorsHandler.Get).Methods(http.MethodGet)
 	router.HandleFunc("/api/v1/acscsemail/errors", errorsHandler.List).Methods(http.MethodGet)
@@ -86,6 +91,7 @@ func buildAuthnHandler(router http.Handler, cfg config.AuthConfig) (http.Handler
 		Service(emailsenderPrefix).
 		Next(router).
 		Public("/health").
+		Public("/openapi").
 		Public("/api/v1/acscsemail/errors/?[0-9]*")
 
 	for _, keyURL := range cfg.JwksURLs {

emailsender/pkg/client/openapiloader.go

@@ -0,0 +1,9 @@
+// Reads generated openAPI definition for Email Sender service
+package client
+
+import _ "embed"
+
+// Loads openAPI difinition .yaml to variable
+//
+//go:embed openapi/api/openapi.yaml
+var OpenAPIDefinition string