better errors through broker

copyparty/broker_util.py

@@ -28,7 +28,7 @@ class ExceptionalQueue(Queue, object):
                 if rv[1] == "pebkac":
                     raise Pebkac(*rv[2:])
                 else:
-                    raise Exception(rv[2])
+                    raise rv[2]
 
         return rv
 
@@ -65,8 +65,8 @@ def try_exec(want_retval: Union[bool, int], func: Any, *args: list[Any]) -> Any:
 
         return ["exception", "pebkac", ex.code, str(ex)]
 
-    except:
+    except Exception as ex:
         if not want_retval:
             raise
 
-        return ["exception", "stack", traceback.format_exc()]
+        return ["exception", "stack", ex]

copyparty/httpcli.py

@@ -646,11 +646,8 @@ class HttpCli(object):
                 if not self._check_nonfatal(pex, post):
                     self.keepalive = False
 
-                if pex is ex:
-                    em = msg = str(ex)
-                else:
-                    em = repr(ex)
-                    msg = min_ex()
+                em = str(ex)
+                msg = em if pex is ex else min_ex()
 
                 if pex.code != 404 or self.do_log:
                     self.log(

copyparty/util.py

@@ -1377,7 +1377,7 @@ def vol_san(vols: list["VFS"], txt: bytes) -> bytes:
 def min_ex(max_lines: int = 8, reverse: bool = False) -> str:
     et, ev, tb = sys.exc_info()
     stb = traceback.extract_tb(tb) if tb else traceback.extract_stack()[:-1]
-    fmt = "%s @ %d <%s>: %s"
+    fmt = "%s:%d <%s>: %s"
     ex = [fmt % (fp.split(os.sep)[-1], ln, fun, txt) for fp, ln, fun, txt in stb]
     if et or ev or tb:
         ex.append("[%s] %s" % (et.__name__ if et else "(anonymous)", ev))