From 8e9411fd078ca6da18e566d9f9eddf0299fd571f Mon Sep 17 00:00:00 2001
From: Benjamin Gaidioz <ben@raw-labs.com>
Date: Thu, 20 Feb 2025 15:15:28 +0100
Subject: [PATCH] Fixed RD-15361: Added akka.license-key config that defaults
 to $AKKA_LICENSE_KEY (#23)

With no AKKA_LICENSE_KEY variable set, it goes to dev mode that stops
after 15 minutes. (It doesn't pick the empty string as a key that is
wrong.)
```
WARN  akka.actor.ActorSystemImpl - Dev use only. Free keys at https://akka.io/key
```

With a proper AKKA_LICENSE_KEY value, it works.
```
INFO  akka.actor.ActorSystemImpl - License check succeeded for Lightbend user (...). License is valid until (...).
```

With a wrong AKKA_LICENSE_KEY value, the error shows and the DAS
immediately stops.
```
ERROR akka.actor.ActorSystemImpl - Invalid key. Free keys at https://akka.io/key
INFO  akka.actor.CoordinatedShutdown - Running CoordinatedShutdown with reason [ActorSystemTerminateReason]
Exception in thread "main" java.lang.RuntimeException: Invalid key: Error decoding license key: Invalid base62 length
```
---
 src/main/resources/reference.conf   | 2 ++
 src/test/resources/application.conf | 3 ---
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/main/resources/reference.conf b/src/main/resources/reference.conf
index ae3517d..a15c8e1 100644
--- a/src/main/resources/reference.conf
+++ b/src/main/resources/reference.conf
@@ -1,3 +1,5 @@
+akka.license-key=${?AKKA_LICENSE_KEY}
+
 das {
     server {
         port = 50051 # the port the server listens on
diff --git a/src/test/resources/application.conf b/src/test/resources/application.conf
index 5c09a9c..c8cde35 100644
--- a/src/test/resources/application.conf
+++ b/src/test/resources/application.conf
@@ -1,6 +1,3 @@
-akka {
-  license-key = ""
-}
 raw.das.server {
     builtin {
         1 {