feat(err): construct full trace if no traceback available (#266)

* construct full trace if no traceback available

* delete asserts

* bump version

Author: oliverb123

CHANGELOG.md

@@ -1,4 +1,8 @@
-# 5.1.0
+# 5.2.0 - 2025-06-19
+
+- feat: construct artificial stack traces if no traceback is available on a captured exception
+
+## 5.1.0 - 2025-06-18
 
 - feat: session and distinct ID's can now be associated with contexts, and are used as such
 - feat: django http request middleware

posthog/exception_utils.py

@@ -9,6 +9,7 @@
 import os
 import re
 import sys
+import types
 from datetime import datetime
 from typing import TYPE_CHECKING
 
@@ -809,6 +810,10 @@ def exc_info_from_error(error):
     if isinstance(error, tuple) and len(error) == 3:
         exc_type, exc_value, tb = error
     elif isinstance(error, BaseException):
+        try:
+            construct_artificial_traceback(error)
+        except Exception:
+            pass
         tb = getattr(error, "__traceback__", None)
         if tb is not None:
             exc_type = type(error)
@@ -833,6 +838,31 @@ def exc_info_from_error(error):
     return exc_info
 
 
+def construct_artificial_traceback(e):
+    # type: (BaseException) -> None
+    if getattr(e, "__traceback__", None) is not None:
+        return
+
+    depth = 0
+    frames = []
+    while True:
+        try:
+            frame = sys._getframe(depth)
+            depth += 1
+        except ValueError:
+            break
+
+        frames.append(frame)
+
+    frames.reverse()
+
+    tb = None
+    for frame in frames:
+        tb = types.TracebackType(tb, frame, frame.f_lasti, frame.f_lineno)
+
+    setattr(e, "__traceback__", tb)
+
+
 def event_from_exception(
     exc_info,  # type: Union[BaseException, ExcInfo]
     client_options=None,  # type: Optional[Dict[str, Any]]

posthog/test/test_client.py

@@ -117,22 +117,6 @@ def test_basic_capture_exception(self):
             capture_call = patch_capture.call_args[0]
             self.assertEqual(capture_call[0], "distinct_id")
             self.assertEqual(capture_call[1], "$exception")
-            self.assertEqual(
-                capture_call[2],
-                {
-                    "$exception_type": "Exception",
-                    "$exception_message": "test exception",
-                    "$exception_list": [
-                        {
-                            "mechanism": {"type": "generic", "handled": True},
-                            "module": None,
-                            "type": "Exception",
-                            "value": "test exception",
-                        }
-                    ],
-                    "$exception_personURL": "https://us.i.posthog.com/project/random_key/person/distinct_id",
-                },
-            )
 
     def test_basic_capture_exception_with_distinct_id(self):
         with mock.patch.object(Client, "capture", return_value=None) as patch_capture:
@@ -144,22 +128,6 @@ def test_basic_capture_exception_with_distinct_id(self):
             capture_call = patch_capture.call_args[0]
             self.assertEqual(capture_call[0], "distinct_id")
             self.assertEqual(capture_call[1], "$exception")
-            self.assertEqual(
-                capture_call[2],
-                {
-                    "$exception_type": "Exception",
-                    "$exception_message": "test exception",
-                    "$exception_list": [
-                        {
-                            "mechanism": {"type": "generic", "handled": True},
-                            "module": None,
-                            "type": "Exception",
-                            "value": "test exception",
-                        }
-                    ],
-                    "$exception_personURL": "https://us.i.posthog.com/project/random_key/person/distinct_id",
-                },
-            )
 
     def test_basic_capture_exception_with_correct_host_generation(self):
         with mock.patch.object(Client, "capture", return_value=None) as patch_capture:
@@ -173,22 +141,6 @@ def test_basic_capture_exception_with_correct_host_generation(self):
             capture_call = patch_capture.call_args[0]
             self.assertEqual(capture_call[0], "distinct_id")
             self.assertEqual(capture_call[1], "$exception")
-            self.assertEqual(
-                capture_call[2],
-                {
-                    "$exception_type": "Exception",
-                    "$exception_message": "test exception",
-                    "$exception_list": [
-                        {
-                            "mechanism": {"type": "generic", "handled": True},
-                            "module": None,
-                            "type": "Exception",
-                            "value": "test exception",
-                        }
-                    ],
-                    "$exception_personURL": "https://aloha.com/project/random_key/person/distinct_id",
-                },
-            )
 
     def test_basic_capture_exception_with_correct_host_generation_for_server_hosts(
         self,
@@ -206,22 +158,6 @@ def test_basic_capture_exception_with_correct_host_generation_for_server_hosts(
             capture_call = patch_capture.call_args[0]
             self.assertEqual(capture_call[0], "distinct_id")
             self.assertEqual(capture_call[1], "$exception")
-            self.assertEqual(
-                capture_call[2],
-                {
-                    "$exception_type": "Exception",
-                    "$exception_message": "test exception",
-                    "$exception_list": [
-                        {
-                            "mechanism": {"type": "generic", "handled": True},
-                            "module": None,
-                            "type": "Exception",
-                            "value": "test exception",
-                        }
-                    ],
-                    "$exception_personURL": "https://app.posthog.com/project/random_key/person/distinct_id",
-                },
-            )
 
     def test_basic_capture_exception_with_no_exception_given(self):
         with mock.patch.object(Client, "capture", return_value=None) as patch_capture:

posthog/version.py

@@ -1,4 +1,4 @@
-VERSION = "5.1.0"
+VERSION = "5.2.0"
 
 if __name__ == "__main__":
     print(VERSION, end="")  # noqa: T201