X-Git-Url: https://wannabe.guru.org/gitweb/?a=blobdiff_plain;f=bootstrap.py;h=c3b70db106260bbc80b592f45ea1fc70e6df6254;hb=36fea7f15ed17150691b5b3ead75450e575229ef;hp=045411ae257116db18b2bb56b61cfe95cd14f762;hpb=aad84a3abe06d127918d09f2ad3b8f4264a9d02b;p=python_utils.git diff --git a/bootstrap.py b/bootstrap.py index 045411a..c3b70db 100644 --- a/bootstrap.py +++ b/bootstrap.py @@ -1,7 +1,6 @@ #!/usr/bin/env python3 import functools -import importlib import logging import os from inspect import stack @@ -18,18 +17,19 @@ logger = logging.getLogger(__name__) args = config.add_commandline_args( f'Bootstrap ({__file__})', - 'Args related to python program bootstrapper and Swiss army knife') + 'Args related to python program bootstrapper and Swiss army knife', +) args.add_argument( '--debug_unhandled_exceptions', action=ActionNoYes, default=False, - help='Break into pdb on top level unhandled exceptions.' + help='Break into pdb on top level unhandled exceptions.', ) args.add_argument( '--show_random_seed', action=ActionNoYes, default=False, - help='Should we display (and log.debug) the global random seed?' + help='Should we display (and log.debug) the global random seed?', ) args.add_argument( '--set_random_seed', @@ -37,13 +37,13 @@ args.add_argument( nargs=1, default=None, metavar='SEED_INT', - help='Override the global random seed with a particular number.' + 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?' + help='Should we dump the Python import tree before main?', ) args.add_argument( '--audit_import_events', @@ -55,11 +55,13 @@ args.add_argument( original_hook = sys.excepthook + def handle_uncaught_exception(exc_type, exc_value, exc_tb): """ Top-level exception handler for exceptions that make it past any exception handlers in the python code being run. Logs the error and stacktrace then maybe attaches a debugger. + """ global original_hook msg = f'Unhandled top level exception {exc_type}' @@ -69,27 +71,27 @@ def handle_uncaught_exception(exc_type, exc_value, exc_tb): sys.__excepthook__(exc_type, exc_value, exc_tb) return else: - if ( - not sys.stderr.isatty() or - not sys.stdin.isatty() - ): + if not sys.stderr.isatty() or not sys.stdin.isatty(): # stdin or stderr is redirected, just do the normal thing original_hook(exc_type, exc_value, exc_tb) else: # a terminal is attached and stderr is not redirected, maybe debug. import traceback + traceback.print_exception(exc_type, exc_value, exc_tb) if config.config['debug_unhandled_exceptions']: import pdb + logger.info("Invoking the debugger...") pdb.pm() else: original_hook(exc_type, exc_value, exc_tb) -class ImportInterceptor(importlib.abc.MetaPathFinder): +class ImportInterceptor(object): def __init__(self): import collect.trie + self.module_by_filename_cache = {} self.repopulate_modules_by_filename() self.tree = collect.trie.Trie() @@ -119,7 +121,9 @@ class ImportInterceptor(importlib.abc.MetaPathFinder): loading_module = self.module_by_filename_cache[filename] else: self.repopulate_modules_by_filename() - loading_module = self.module_by_filename_cache.get(filename, 'unknown') + loading_module = self.module_by_filename_cache.get( + filename, 'unknown' + ) path = self.tree_node_by_module.get(loading_module, []) path.extend([loaded_module]) @@ -141,10 +145,16 @@ class ImportInterceptor(importlib.abc.MetaPathFinder): return [] -# TODO: test this with python 3.8+ -def audit_import_events(event, args): - print(event) - print(args) +# # TODO: test this with python 3.8+ +# def audit_import_events(event, args): +# if event == 'import': +# module = args[0] +# filename = args[1] +# sys_path = args[2] +# sys_meta_path = args[3] +# sys_path_hooks = args[4] +# logger.debug(msg) +# print(msg) # Audit import events? Note: this runs early in the lifetime of the @@ -158,15 +168,14 @@ def audit_import_events(event, args): 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) + import_interceptor = ImportInterceptor() + sys.meta_path = [import_interceptor] + sys.meta_path + # if not hasattr(sys, 'frozen'): + # if ( + # sys.version_info[0] == 3 + # and sys.version_info[1] >= 8 + # ): + # sys.addaudithook(audit_import_events) def dump_all_objects() -> None: @@ -209,6 +218,7 @@ def initialize(entry_point): seed, etc... before running main. """ + @functools.wraps(entry_point) def initialize_wrapper(*args, **kwargs): # Hook top level unhandled exceptions, maybe invoke debugger. @@ -219,8 +229,8 @@ def initialize(entry_point): # parse configuration (based on cmdline flags, environment vars # etc...) if ( - '__globals__' in entry_point.__dict__ and - '__file__' in entry_point.__globals__ + '__globals__' in entry_point.__dict__ + and '__file__' in entry_point.__globals__ ): config.parse(entry_point.__globals__['__file__']) else: @@ -234,6 +244,7 @@ def initialize(entry_point): # Allow programs that don't bother to override the random seed # to be replayed via the commandline. import random + random_seed = config.config['set_random_seed'] if random_seed is not None: random_seed = random_seed[0] @@ -250,6 +261,7 @@ def initialize(entry_point): logger.debug(f'Starting {entry_point.__name__} (program entry point)') ret = None import stopwatch + with stopwatch.Timer() as t: ret = entry_point(*args, **kwargs) logger.debug( @@ -266,13 +278,15 @@ def initialize(entry_point): walltime = t() (utime, stime, cutime, cstime, elapsed_time) = os.times() - logger.debug('\n' - f'user: {utime}s\n' - f'system: {stime}s\n' - f'child user: {cutime}s\n' - f'child system: {cstime}s\n' - f'machine uptime: {elapsed_time}s\n' - f'walltime: {walltime}s') + logger.debug( + '\n' + f'user: {utime}s\n' + f'system: {stime}s\n' + f'child user: {cutime}s\n' + f'child system: {cstime}s\n' + f'machine uptime: {elapsed_time}s\n' + f'walltime: {walltime}s' + ) # If it doesn't return cleanly, call attention to the return value. if ret is not None and ret != 0: @@ -280,4 +294,5 @@ def initialize(entry_point): else: logger.debug(f'Exit {ret}') sys.exit(ret) + return initialize_wrapper