Merge pull request #195 from canonical/kf-6057-backport-secret-key-le…

…ngth

backport(fix): block when secret-key is too short from #178

config.yaml

@@ -17,7 +17,7 @@ options:
   secret-key:
     type: string
     default: ''
-    description: Secret key
+    description: Secret key. Must be at least 8 characters long. If not provided, a random key will be used.
   mode:
     type: string
     default: 'server'

src/charm.py

@@ -70,6 +70,13 @@ def main(self, event):
             return
 
         secret_key = self._get_secret_key()
+
+        if len(secret_key) < 8:
+            self.model.unit.status = BlockedStatus(
+                "The `secret-key` config value must be at least 8 characters long."
+            )
+            return
+
         self._send_info(interfaces, secret_key)
 
         configmap_hash = self._generate_config_hash()