feat(ourlogs): canonicalize paths from the logger integration (#4336)

We'd like to allow linking to the 'source code' line in the logs page -
this canonicalizes the path relative to the project root (if one is
defined)

![Screenshot 2025-04-28 at 12 03
45 PM](https://github.com/user-attachments/assets/89dde691-d9c3-45b2-b289-c42996496bf3)

Solves LOGS-58

Author: colin-sentry

sentry_sdk/integrations/logging.py

@@ -355,6 +355,7 @@ def _capture_log_from_record(client, record):
         # type: (BaseClient, LogRecord) -> None
         scope = sentry_sdk.get_current_scope()
         otel_severity_number, otel_severity_text = _python_level_to_otel(record.levelno)
+        project_root = client.options["project_root"]
         attrs = {
             "sentry.origin": "auto.logger.log",
         }  # type: dict[str, str | bool | float | int]
@@ -374,7 +375,10 @@ def _capture_log_from_record(client, record):
         if record.lineno:
             attrs["code.line.number"] = record.lineno
         if record.pathname:
-            attrs["code.file.path"] = record.pathname
+            if project_root is not None and record.pathname.startswith(project_root):
+                attrs["code.file.path"] = record.pathname[len(project_root) + 1 :]
+            else:
+                attrs["code.file.path"] = record.pathname
         if record.funcName:
             attrs["code.function.name"] = record.funcName
 

tests/test_logs.py

@@ -346,7 +346,6 @@ def test_logging_errors(sentry_init, capture_envelopes):
     error_event_2 = envelopes[1].items[0].payload.json
     assert error_event_2["level"] == "error"
 
-    print(envelopes)
     logs = envelopes_to_logs(envelopes)
     assert logs[0]["severity_text"] == "error"
     assert "sentry.message.template" not in logs[0]["attributes"]
@@ -364,6 +363,36 @@ def test_logging_errors(sentry_init, capture_envelopes):
     assert len(logs) == 2
 
 
+def test_log_strips_project_root(sentry_init, capture_envelopes):
+    """
+    The python logger should strip project roots from the log record path
+    """
+    sentry_init(
+        _experiments={"enable_logs": True},
+        project_root="/custom/test",
+    )
+    envelopes = capture_envelopes()
+
+    python_logger = logging.Logger("test-logger")
+    python_logger.handle(
+        logging.LogRecord(
+            name="test-logger",
+            level=logging.WARN,
+            pathname="/custom/test/blah/path.py",
+            lineno=123,
+            msg="This is a test log with a custom pathname",
+            args=(),
+            exc_info=None,
+        )
+    )
+    get_client().flush()
+
+    logs = envelopes_to_logs(envelopes)
+    assert len(logs) == 1
+    attrs = logs[0]["attributes"]
+    assert attrs["code.file.path"] == "blah/path.py"
+
+
 def test_auto_flush_logs_after_100(sentry_init, capture_envelopes):
     """
     If you log >100 logs, it should automatically trigger a flush.