From 5a806850527c802494cd5db4b44970be44d19e5d Mon Sep 17 00:00:00 2001
From: Travis <travis@pilosa.com>
Date: Wed, 19 Apr 2017 16:59:56 -0500
Subject: [PATCH] add support for CreateDB and CreateFrame without POST data
 (i.e. use defaults)

---
 handler.go | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/handler.go b/handler.go
index a6309e44a..b94a9a0ed 100644
--- a/handler.go
+++ b/handler.go
@@ -309,6 +309,15 @@ func (h *Handler) handleDeleteDB(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Send the delete message to all nodes.
+	err := h.Broadcaster.SendSync(
+		&internal.DeleteDBMessage{
+			DB: dbName,
+		})
+	if err != nil {
+		h.logger().Printf("problem sending DeleteDB message: %s", err)
+	}
+
 	// Encode response.
 	if err := json.NewEncoder(w).Encode(deleteDBResponse{}); err != nil {
 		h.logger().Printf("response encoding error: %s", err)
@@ -323,13 +332,17 @@ func (h *Handler) handlePostDB(w http.ResponseWriter, r *http.Request) {
 
 	// Decode request.
 	var req postDBRequest
-	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+	err := json.NewDecoder(r.Body).Decode(&req)
+	if err == io.EOF {
+		// If no data was provided (EOF), we still create the database
+		// with default values.
+	} else if err != nil {
 		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
 
 	// Create database.
-	_, err := h.Index.CreateDB(dbName, req.Options)
+	_, err = h.Index.CreateDB(dbName, req.Options)
 	if err == ErrDatabaseExists {
 		http.Error(w, err.Error(), http.StatusConflict)
 		return
@@ -340,11 +353,15 @@ func (h *Handler) handlePostDB(w http.ResponseWriter, r *http.Request) {
 
 	// Send the delete message to all nodes.
 	err = h.Broadcaster.SendSync(
-		&internal.DeleteDBMessage{
+		&internal.CreateDBMessage{
 			DB: dbName,
+			Meta: &internal.DBMeta{
+				ColumnLabel: req.Options.ColumnLabel,
+				TimeQuantum: string(req.Options.TimeQuantum),
+			},
 		})
 	if err != nil {
-		h.logger().Printf("problem sending DeleteDB message: %s", err)
+		h.logger().Printf("problem sending CreateDB message: %s", err)
 	}
 
 	// Encode response.
@@ -460,7 +477,11 @@ func (h *Handler) handlePostFrame(w http.ResponseWriter, r *http.Request) {
 
 	// Decode request.
 	var req postFrameRequest
-	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+	err := json.NewDecoder(r.Body).Decode(&req)
+	if err == io.EOF {
+		// If no data was provided (EOF), we still create the frame
+		// with default values.
+	} else if err != nil {
 		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
@@ -473,7 +494,7 @@ func (h *Handler) handlePostFrame(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Create frame.
-	_, err := db.CreateFrame(frameName, req.Options)
+	_, err = db.CreateFrame(frameName, req.Options)
 	if err == ErrFrameExists {
 		http.Error(w, err.Error(), http.StatusConflict)
 		return