Save secret_key in order to avoid changing it every buildout run.

slapos/recipe/apachephp/__init__.py

@@ -73,9 +73,17 @@ class Recipe(GenericBaseRecipe):
     )
     path_list.append(wrapper)
 
-    secret_key = uuencode(os.urandom(45)).strip()
-    # Remove unsafe characters
-    secret_key = secret_key.translate(None, '"\'')
+    secret_key_filename = os.path.join(self.buildout['buildout']['directory'],
+                                       '.php_secret_key')
+    if not os.path.exists(secret_key_filename):
+      secret_key = uuencode(os.urandom(45)).strip()
+      # Remove unsafe characters
+      secret_key = secret_key.translate(None, '"\'')
+      with open(secret_key_filename, 'w') as secret_key_file:
+        secret_key_file.write(secret_key)
+    else:
+      with open(secret_key_filename, 'r') as secret_key_file:
+        secret_key = secret_key_file.read()
 
     application_conf = dict(mysql_database=self.options['mysql-database'],
                             mysql_user=self.options['mysql-username'],