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-rw-r--r--synapse/util/logutils.py39
1 files changed, 37 insertions, 2 deletions
diff --git a/synapse/util/logutils.py b/synapse/util/logutils.py
index fd9ac4d4d4..3a83828d25 100644
--- a/synapse/util/logutils.py
+++ b/synapse/util/logutils.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright 2014, 2015 OpenMarket Ltd
+# Copyright 2014-2016 OpenMarket Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -111,7 +111,7 @@ def time_function(f):
             _log_debug_as_f(
                 f,
                 "[FUNC END] {%s-%d} %f",
-                (func_name, id, end-start,),
+                (func_name, id, end - start,),
             )
 
         return r
@@ -168,3 +168,38 @@ def trace_function(f):
 
     wrapped.__name__ = func_name
     return wrapped
+
+
+def get_previous_frames():
+    s = inspect.currentframe().f_back.f_back
+    to_return = []
+    while s:
+        if s.f_globals["__name__"].startswith("synapse"):
+            filename, lineno, function, _, _ = inspect.getframeinfo(s)
+            args_string = inspect.formatargvalues(*inspect.getargvalues(s))
+
+            to_return.append("{{  %s:%d %s - Args: %s }}" % (
+                filename, lineno, function, args_string
+            ))
+
+        s = s.f_back
+
+    return ", ". join(to_return)
+
+
+def get_previous_frame(ignore=[]):
+    s = inspect.currentframe().f_back.f_back
+
+    while s:
+        if s.f_globals["__name__"].startswith("synapse"):
+            if not any(s.f_globals["__name__"].startswith(ig) for ig in ignore):
+                filename, lineno, function, _, _ = inspect.getframeinfo(s)
+                args_string = inspect.formatargvalues(*inspect.getargvalues(s))
+
+                return "{{  %s:%d %s - Args: %s }}" % (
+                    filename, lineno, function, args_string
+                )
+
+        s = s.f_back
+
+    return None