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-rw-r--r--utils/codegen/ipc/tools/diagnosis/crbug_1001171.py51
1 files changed, 51 insertions, 0 deletions
diff --git a/utils/codegen/ipc/tools/diagnosis/crbug_1001171.py b/utils/codegen/ipc/tools/diagnosis/crbug_1001171.py
new file mode 100644
index 00000000..40900d10
--- /dev/null
+++ b/utils/codegen/ipc/tools/diagnosis/crbug_1001171.py
@@ -0,0 +1,51 @@
+# Copyright 2019 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Helper context wrapper for diagnosing crbug.com/1001171.
+
+This module and all uses thereof can and should be removed once
+crbug.com/1001171 has been resolved.
+"""
+
+from __future__ import print_function
+
+import contextlib
+import os
+import sys
+
+
+@contextlib.contextmanager
+def DumpStateOnLookupError():
+ """Prints potentially useful state info in the event of a LookupError."""
+ try:
+ yield
+ except LookupError:
+ print('LookupError diagnosis for crbug.com/1001171:')
+ for path_index, path_entry in enumerate(sys.path):
+ desc = 'unknown'
+ if not os.path.exists(path_entry):
+ desc = 'missing'
+ elif os.path.islink(path_entry):
+ desc = 'link -> %s' % os.path.realpath(path_entry)
+ elif os.path.isfile(path_entry):
+ desc = 'file'
+ elif os.path.isdir(path_entry):
+ desc = 'dir'
+ print(' sys.path[%d]: %s (%s)' % (path_index, path_entry, desc))
+
+ real_path_entry = os.path.realpath(path_entry)
+ if (path_entry.endswith(os.path.join('lib', 'python2.7'))
+ and os.path.isdir(real_path_entry)):
+ encodings_dir = os.path.realpath(
+ os.path.join(real_path_entry, 'encodings'))
+ if os.path.exists(encodings_dir):
+ if os.path.isdir(encodings_dir):
+ print(' %s contents: %s' % (encodings_dir,
+ str(os.listdir(encodings_dir))))
+ else:
+ print(' %s exists but is not a directory' % encodings_dir)
+ else:
+ print(' %s missing' % encodings_dir)
+
+ raise