feat(firehose): skip stencil url generation if already exists (#71)

Author: StewartJingga

internal/server/v1/firehose/crud.go

@@ -78,7 +78,7 @@ func (api *firehoseAPI) handleCreate(w http.ResponseWriter, r *http.Request) {
 	}
 	def.Project = prj.GetSlug()
 
-	err = api.buildEnvVars(r.Context(), &def, reqCtx.UserID, true)
+	err = api.buildEnvVars(r.Context(), &def, reqCtx.UserID, false)
 	if err != nil {
 		utils.WriteErr(w, fmt.Errorf("error building env vars: %w", err))
 		return
@@ -269,7 +269,7 @@ func (api *firehoseAPI) handleUpdate(w http.ResponseWriter, r *http.Request) {
 		labels[labelDescription] = existingFirehose.Description
 	}
 
-	err = api.buildEnvVars(r.Context(), &existingFirehose, reqCtx.UserID, true)
+	err = api.buildEnvVars(r.Context(), &existingFirehose, reqCtx.UserID, false)
 	if err != nil {
 		utils.WriteErr(w, fmt.Errorf("error building env vars: %w", err))
 		return
@@ -385,7 +385,8 @@ func (api *firehoseAPI) handlePartialUpdate(w http.ResponseWriter, r *http.Reque
 	)
 
 	_, hasTopicUpdate := req.Configs.EnvVars[configSourceKafkaTopic]
-	err = api.buildEnvVars(r.Context(), &existing, reqCtx.UserID, hasTopicUpdate)
+	skipStencil := !hasTopicUpdate
+	err = api.buildEnvVars(r.Context(), &existing, reqCtx.UserID, skipStencil)
 	if err != nil {
 		utils.WriteErr(w, fmt.Errorf("error building env vars: %w", err))
 		return

internal/server/v1/firehose/envvars.go

@@ -9,7 +9,7 @@ import (
 	"github.com/goto/dex/odin"
 )
 
-func (api *firehoseAPI) buildEnvVars(ctx context.Context, firehose *models.Firehose, userID string, fetchStencilURL bool) error {
+func (api *firehoseAPI) buildEnvVars(ctx context.Context, firehose *models.Firehose, userID string, skipStencil bool) error {
 	streamURN := buildStreamURN(*firehose.Configs.StreamName, firehose.Project)
 
 	if firehose.Configs.EnvVars[configSourceKafkaBrokers] == "" {
@@ -21,7 +21,7 @@ func (api *firehoseAPI) buildEnvVars(ctx context.Context, firehose *models.Fireh
 	}
 
 	firehose.Configs.EnvVars["SCHEMA_REGISTRY_STENCIL_ENABLE"] = trueString
-	if fetchStencilURL || firehose.Configs.EnvVars[configStencilURL] == "" {
+	if firehose.Configs.EnvVars[configStencilURL] == "" && !skipStencil {
 		stencilUrls, err := api.getStencilURLs(
 			ctx,
 			userID,