1 files changed, 49 insertions, 0 deletions
diff --git a/cmd/web/http_util.go b/cmd/web/http_util.go
new file mode 100644
index 0000000..941e270
--- /dev/null
+++ b/cmd/web/http_util.go
@@ -0,0 +1,49 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+type respStatus struct {
+	Status string `json:"status" example:"OK"`
+}
+
+type respError struct {
+	Error string `json:"error" example:"Descriptive Error message"`
+}
+
+// HttpJSONResp will return a JSON response down to the client, setting
+// the appropriate content-type header and the status code provided.
+// optionally if "logmsg" is not empty it will log that string
+func HttpJSONResp(
+	w http.ResponseWriter, r *http.Request,
+	StatusCode int, logmsg string, data interface{}) {
+	w.Header().Add("Content-type", "application/json")
+	w.WriteHeader(StatusCode)
+
+	if logmsg != "" {
+		Logger.Printf("%s : %s", r.URL.Path, logmsg)
+	}
+
+	enc := json.NewEncoder(w)
+	err := enc.Encode(data)
+	if err != nil {
+		Logger.Printf("%s ERROR: %s", r.URL.Path, err)
+	}
+}
+
+// HttpJSONRespErr just calls HttpJSONResp with a
+//    map[string]string{"error": respmsg}
+// as the data
+func HttpJSONRespErr(
+	w http.ResponseWriter, r *http.Request,
+	StatusCode int, logmsg, respmsg string) {
+	HttpJSONResp(w, r, StatusCode,
+		logmsg, &respError{Error: respmsg})
+}
+
+// HttpJSONOK simply returns json encoded {"status": "ok"} down to the client
+func HttpJSONOK(w http.ResponseWriter, r *http.Request, logmsg string) {
+	HttpJSONResp(w, r, http.StatusOK, logmsg, &respStatus{Status: "OK"})
+}