#!/usr/bin/env python3
import functools
+import importlib
import logging
import os
+from inspect import stack
import sys
# This module is commonly used by others in here and should avoid
metavar='SEED_INT',
help='Override the global random seed with a particular number.'
)
+args.add_argument(
+ '--dump_all_objects',
+ action=ActionNoYes,
+ default=False,
+ help='Should we dump the Python import tree before main?'
+)
+args.add_argument(
+ '--audit_import_events',
+ action=ActionNoYes,
+ default=False,
+ help='Should we audit all import events?',
+)
-original_hook = sys.excepthook
+original_hook = sys.excepthook
def handle_uncaught_exception(exc_type, exc_value, exc_tb):
"""
original_hook(exc_type, exc_value, exc_tb)
+class ImportInterceptor(object):
+ def __init__(self):
+ import collect.trie
+ self.module_by_filename_cache = {}
+ self.repopulate_modules_by_filename()
+ self.tree = collect.trie.Trie()
+ self.tree_node_by_module = {}
+
+ def repopulate_modules_by_filename(self):
+ self.module_by_filename_cache.clear()
+ for mod in sys.modules:
+ if hasattr(sys.modules[mod], '__file__'):
+ fname = getattr(sys.modules[mod], '__file__')
+ else:
+ fname = 'unknown'
+ self.module_by_filename_cache[fname] = mod
+
+ def should_ignore_filename(self, filename: str) -> bool:
+ return 'importlib' in filename or 'six.py' in filename
+
+ def find_spec(self, loaded_module, path=None, target=None):
+ s = stack()
+ for x in range(3, len(s)):
+ filename = s[x].filename
+ if self.should_ignore_filename(filename):
+ continue
+
+ loading_function = s[x].function
+ if filename in self.module_by_filename_cache:
+ loading_module = self.module_by_filename_cache[filename]
+ else:
+ self.repopulate_modules_by_filename()
+ loading_module = self.module_by_filename_cache.get(filename, 'unknown')
+
+ path = self.tree_node_by_module.get(loading_module, [])
+ path.extend([loaded_module])
+ self.tree.insert(path)
+ self.tree_node_by_module[loading_module] = path
+
+ msg = f'*** Import {loaded_module} from {filename}:{s[x].lineno} in {loading_module}::{loading_function}'
+ logger.debug(msg)
+ print(msg)
+ return
+ msg = f'*** Import {loaded_module} from ?????'
+ logger.debug(msg)
+ print(msg)
+
+ def find_importer(self, module: str):
+ if module in self.tree_node_by_module:
+ node = self.tree_node_by_module[module]
+ return node
+ return []
+
+
+# TODO: test this with python 3.8+
+def audit_import_events(event, args):
+ print(event)
+ print(args)
+
+
+# Audit import events? Note: this runs early in the lifetime of the
+# process (assuming that import bootstrap happens early); config has
+# (probably) not yet been loaded or parsed the commandline. Also,
+# some things have probably already been imported while we weren't
+# watching so this information may be incomplete.
+#
+# Also note: move bootstrap up in the global import list to catch
+# more import events and have a more complete record.
+import_interceptor = None
+for arg in sys.argv:
+ if arg == '--audit_import_events':
+ if not hasattr(sys, 'frozen'):
+ if (
+ sys.version_info[0] == 3
+ and sys.version_info[1] < 8
+ ):
+ import_interceptor = ImportInterceptor()
+ sys.meta_path = [import_interceptor] + sys.meta_path
+ else:
+ sys.addaudithook(audit_import_events)
+
+
+def dump_all_objects() -> None:
+ global import_interceptor
+ messages = {}
+ all_modules = sys.modules
+ for obj in object.__subclasses__():
+ if not hasattr(obj, '__name__'):
+ continue
+ klass = obj.__name__
+ if not hasattr(obj, '__module__'):
+ continue
+ class_mod_name = obj.__module__
+ if class_mod_name in all_modules:
+ mod = all_modules[class_mod_name]
+ if not hasattr(mod, '__name__'):
+ mod_name = class_mod_name
+ else:
+ mod_name = mod.__name__
+ if hasattr(mod, '__file__'):
+ mod_file = mod.__file__
+ else:
+ mod_file = 'unknown'
+ if import_interceptor is not None:
+ import_path = import_interceptor.find_importer(mod_name)
+ else:
+ import_path = 'unknown'
+ msg = f'{class_mod_name}::{klass} ({mod_file})'
+ if import_path != 'unknown' and len(import_path) > 0:
+ msg += f' imported by {import_path}'
+ messages[f'{class_mod_name}::{klass}'] = msg
+ for x in sorted(messages.keys()):
+ logger.debug(messages[x])
+ print(messages[x])
+
+
def initialize(entry_point):
"""
Remember to initialize config, initialize logging, set/log a random
"""
@functools.wraps(entry_point)
def initialize_wrapper(*args, **kwargs):
-
# Hook top level unhandled exceptions, maybe invoke debugger.
if sys.excepthook == sys.__excepthook__:
sys.excepthook = handle_uncaught_exception
if config.config['show_random_seed']:
msg = f'Global random seed is: {random_seed}'
- print(msg)
logger.debug(msg)
+ print(msg)
random.seed(random_seed)
# Do it, invoke the user's code. Pay attention to how long it takes.
f'{entry_point.__name__} (program entry point) returned {ret}.'
)
+ if config.config['dump_all_objects']:
+ dump_all_objects()
+
+ if config.config['audit_import_events']:
+ global import_interceptor
+ if import_interceptor is not None:
+ print(import_interceptor.tree)
+
walltime = t()
(utime, stime, cutime, cstime, elapsed_time) = os.times()
logger.debug('\n'
projects / python_utils.git / blobdiff