Add annotation to trigger on create if endpoints are enabled (#1177)

* Add annotations for creation of triggers and fns along with the test for them fixes #1178

* Log errors and still return created resource for annotation failures

api/server/fns_create.go

@@ -3,12 +3,14 @@ package server
 import (
 	"net/http"
 
+	"github.com/fnproject/fn/api/common"
 	"github.com/fnproject/fn/api/models"
 	"github.com/gin-gonic/gin"
 )
 
 func (s *Server) handleFnCreate(c *gin.Context) {
 	ctx := c.Request.Context()
+	log := common.Logger(ctx)
 
 	fn := &models.Fn{}
 	err := c.BindJSON(fn)
@@ -24,7 +26,22 @@ func (s *Server) handleFnCreate(c *gin.Context) {
 	fnCreated, err := s.datastore.InsertFn(ctx, fn)
 	if err != nil {
 		handleErrorResponse(c, err)
+		return
 	}
 
-	c.JSON(http.StatusOK, fnCreated)
+	app, err := s.datastore.GetAppByID(ctx, fnCreated.AppID)
+	if err != nil {
+		log.Debugln("Failed to lookup app.")
+		c.JSON(http.StatusOK, fnCreated)
+		return
+	}
+
+	fnAnnotated, err := s.fnAnnotator.AnnotateFn(c, app, fnCreated)
+	if err != nil {
+		log.Debugln("Failed to annotate fn")
+		c.JSON(http.StatusOK, fnCreated)
+		return
+	}
+
+	c.JSON(http.StatusOK, fnAnnotated)
 }