From bbb2ac1fc4ff4f0a579212f622852a352be38270 Mon Sep 17 00:00:00 2001
From: mikecohen <mcohen@flowmill.com>
Date: Mon, 22 Jul 2019 09:16:44 -0700
Subject: [PATCH] Add in a fixed percentage of 500 errors in responses.

---
 src/frontend/handlers.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/frontend/handlers.go b/src/frontend/handlers.go
index d7e8765..46d1a6b 100644
--- a/src/frontend/handlers.go
+++ b/src/frontend/handlers.go
@@ -43,6 +43,13 @@ func (fe *frontendServer) homeHandler(w http.ResponseWriter, r *http.Request) {
 	log := r.Context().Value(ctxKeyLog{}).(logrus.FieldLogger)
 	log.WithField("currency", currentCurrency(r)).Info("home")
 	currencies, err := fe.getCurrencies(r.Context())
+
+	// NOTE: This artificially injects failures in a fixed percentage of the responess
+	if (rand.Intn(100) < 3) {
+		renderHTTPError(log, r, w, errors.Wrap(err, "Random artificial 500 error"), http.StatusInternalServerError)
+		return
+	}
+	
 	if err != nil {
 		renderHTTPError(log, r, w, errors.Wrap(err, "could not retrieve currencies"), http.StatusInternalServerError)
 		return