Telethon/telethon_generator/parsers/errors.py

147 lines
5.0 KiB
Python

import json
import re
from collections import defaultdict
from ..utils import snake_to_camel_case
# Core base classes depending on the integer error code
KNOWN_BASE_CLASSES = {
303: 'InvalidDCError',
400: 'BadRequestError',
401: 'UnauthorizedError',
403: 'ForbiddenError',
404: 'NotFoundError',
406: 'AuthKeyError',
420: 'FloodError',
500: 'ServerError',
}
# The API doesn't return the code for some (vital) errors. They are
# all assumed to be 400, except these well-known ones that aren't.
KNOWN_CODES = {
'ACTIVE_USER_REQUIRED': 401,
'AUTH_KEY_UNREGISTERED': 401,
'USER_DEACTIVATED': 401
}
# Give better semantic names to some captures
CAPTURE_NAMES = {
'FloodWaitError': 'seconds',
'FloodTestPhoneWaitError': 'seconds',
'FileMigrateError': 'new_dc',
'NetworkMigrateError': 'new_dc',
'PhoneMigrateError': 'new_dc',
'UserMigrateError': 'new_dc',
'FilePartMissingError': 'which'
}
def _get_class_name(error_code):
"""
Gets the corresponding class name for the given error code,
this either being an integer (thus base error name) or str.
"""
if isinstance(error_code, int):
return KNOWN_BASE_CLASSES.get(
error_code, 'RPCError' + str(error_code).replace('-', 'Neg')
)
return snake_to_camel_case(
error_code.replace('FIRSTNAME', 'FIRST_NAME').lower(), suffix='Error')
class Error:
def __init__(self, int_code, str_code, description, caused_by):
# TODO Some errors have the same str_code but different int_code
# Should these be split into different files or doesn't really matter?
# Telegram isn't exactly consistent with returned errors anyway.
self.int_code = int_code
self.str_code = str_code
self.subclass = _get_class_name(int_code)
self.subclass_exists = int_code in KNOWN_BASE_CLASSES
self.description = description
self.caused_by = list(sorted(caused_by))
self.has_captures = '_X' in str_code
if self.has_captures:
self.name = _get_class_name(str_code.replace('_X', ''))
self.pattern = str_code.replace('_X', r'_(\d+)')
self.capture_name = CAPTURE_NAMES.get(self.name, 'x')
else:
self.name = _get_class_name(str_code)
self.pattern = str_code
self.capture_name = None
def parse_errors(json_file, descriptions_file):
"""
Parses the given JSON file in the following format:
{
"ok": true,
"human_result": {"int_code": ["descriptions"]},
"result": {"int_code": {"full_method_name": ["str_error"]}}
}
The descriptions file, which has precedence over the JSON's human_result,
should have the following format:
# comment
str_error=Description
The method yields `Error` instances as a result.
"""
with open(json_file, encoding='utf-8') as f:
data = json.load(f)
errors = defaultdict(set)
error_to_method = defaultdict(set)
# PWRTelegram's API doesn't return all errors, which we do need here.
# Add some special known-cases manually first.
errors[420].update((
'FLOOD_WAIT_X', 'FLOOD_TEST_PHONE_WAIT_X'
))
errors[401].update((
'AUTH_KEY_INVALID', 'SESSION_EXPIRED', 'SESSION_REVOKED'
))
errors[303].update((
'FILE_MIGRATE_X', 'PHONE_MIGRATE_X',
'NETWORK_MIGRATE_X', 'USER_MIGRATE_X'
))
for int_code, method_errors in data['result'].items():
for method, error_list in method_errors.items():
for error in error_list:
error = re.sub('_\d+', '_X', error).upper()
errors[int(int_code)].add(error)
error_to_method[error].add(method)
# Some errors are in the human result, but not with a code. Assume 400
for error in data['human_result']:
if error[0] != '-' and not error.isdigit():
error = re.sub('_\d+', '_X', error).upper()
if not any(error in es for es in errors.values()):
errors[KNOWN_CODES.get(error, 400)].add(error)
# Prefer the descriptions that are related with Telethon way of coding
# to those that PWRTelegram's API provides.
telethon_descriptions = {}
with open(descriptions_file, encoding='utf-8') as f:
for line in f:
line = line.strip()
if line and not line.startswith('#'):
equal = line.index('=')
message, description = line[:equal], line[equal + 1:]
telethon_descriptions[message.rstrip()] = description.lstrip()
for int_code, error_set in errors.items():
for str_code in sorted(error_set):
description = telethon_descriptions.get(
str_code, '\n'.join(data['human_result'].get(
str_code, ['No description known']
))
)
yield Error(
int_code=int_code,
str_code=str_code,
description=description,
caused_by=error_to_method[str_code]
)