--reload-extra-file option

gunicorn/config.py

@@ -368,6 +368,14 @@ def validate_string(val):
     return val.strip()
 
 
+def validate_file_exists(val):
+    if val is None:
+        return None
+    if not os.path.exists(val):
+        raise ValueError("File %s does not exists." % val)
+    return val
+
+
 def validate_list_string(val):
     if not val:
         return []
@@ -379,6 +387,10 @@ def validate_list_string(val):
     return [validate_string(v) for v in val]
 
 
+def validate_list_of_existing_files(val):
+    return [validate_file_exists(v) for v in validate_list_string(val)]
+
+
 def validate_string_to_list(val):
     val = validate_string(val)
 
@@ -857,6 +869,20 @@ class ReloadEngine(Setting):
         """
 
 
+class ReloadExtraFiles(Setting):
+    name = "reload_extra_files"
+    action = "append"
+    section = "Debugging"
+    cli = ["--reload-extra-file"]
+    meta = "FILES"
+    validator = validate_list_of_existing_files
+    default = []
+    desc = """\
+        Extends --reload option to also watch and reload on additional files
+        (e.g., templates, configurations, specifications, etc.).
+        """
+
+
 class Spew(Setting):
     name = "spew"
     section = "Debugging"

gunicorn/reloader.py

@@ -81,6 +81,9 @@ if has_inotify:
             self._dirs = set()
             self._watcher = Inotify()
 
+            for extra_file in extra_files:
+                self.add_extra_file(extra_file)
+
         def add_extra_file(self, filename):
             dirname = os.path.dirname(filename)
 

gunicorn/workers/base.py

@@ -120,7 +120,8 @@ class Worker(object):
                 sys.exit(0)
 
             reloader_cls = reloader_engines[self.cfg.reload_engine]
-            self.reloader = reloader_cls(callback=changed)
+            self.reloader = reloader_cls(extra_files=self.cfg.reload_extra_files,
+                                         callback=changed)
             self.reloader.start()
 
         self.load_wsgi()