redis ssl support

.env.example

@@ -17,4 +17,6 @@ DB_NAME=
 REDIS_HOST=localhost
 REDIS_PORT=6379
 REDIS_PASS=
-REDIS_DB=0
+REDIS_DB=0
+REDIS_USE_SSL=false
+REDIS_SSL_SERVER_NAME="*.c.db.ondigitalocean.com"

app/start.go

@@ -1,6 +1,7 @@
 package app
 
 import (
+	"crypto/tls"
 	"fmt"
 	"time"
 
@@ -26,14 +27,20 @@ func Start(dbO *sqlx.DB) *fhr.Router {
 	rawRouter := fhr.New()
 	r := router{rawRouter}
 
-	// TODO: Implement datadog APM.
-
-	// redis
 	settings := common.GetSettings()
+
+	// initialise redis
+	var tlsConfig *tls.Config
+	if settings.REDIS_USE_SSL {
+		tlsConfig = &tls.Config{
+			ServerName: settings.REDIS_SSL_SERVER_NAME,
+		}
+	}
 	red = redis.NewClient(&redis.Options{
-		Addr:     fmt.Sprintf("%s:%d", settings.REDIS_HOST, settings.REDIS_PORT),
-		Password: settings.REDIS_PASS,
-		DB:       settings.REDIS_DB,
+		Addr:      fmt.Sprintf("%s:%d", settings.REDIS_HOST, settings.REDIS_PORT),
+		Password:  settings.REDIS_PASS,
+		DB:        settings.REDIS_DB,
+		TLSConfig: tlsConfig,
 	})
 	peppy.R = red
 

common/settings.go

@@ -20,6 +20,11 @@ func strToInt(s string) int {
 	return val
 }
 
+func strToBool(s string) bool {
+	val, _ := strconv.ParseBool(s)
+	return val
+}
+
 type Settings struct {
 	APP_PORT   int
 	APP_DOMAIN string
@@ -37,10 +42,12 @@ type Settings struct {
 	DB_PASS   string
 	DB_NAME   string
 
-	REDIS_HOST string
-	REDIS_PORT int
-	REDIS_PASS string
-	REDIS_DB   int
+	REDIS_HOST            string
+	REDIS_PORT            int
+	REDIS_PASS            string
+	REDIS_DB              int
+	REDIS_USE_SSL         bool
+	REDIS_SSL_SERVER_NAME string
 }
 
 var settings = Settings{}
@@ -68,6 +75,8 @@ func LoadSettings() Settings {
 	settings.REDIS_PORT = strToInt(getEnv("REDIS_PORT"))
 	settings.REDIS_PASS = getEnv("REDIS_PASS")
 	settings.REDIS_DB = strToInt(getEnv("REDIS_DB"))
+	settings.REDIS_USE_SSL = strToBool(getEnv("REDIS_USE_SSL"))
+	settings.REDIS_SSL_SERVER_NAME = getEnv("REDIS_SSL_SERVER_NAME")
 
 	return settings
 }