98 lines
4.0 KiB
Python
98 lines
4.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from datetime import datetime
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from pathlib import Path
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import logging
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try:
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import simplejson as json
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except ImportError:
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import json
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import re
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from redis import StrictRedis
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from uuid import uuid4
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from io import BytesIO
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import importlib
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from typing import List
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import types
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from .libs.helpers import safe_create_dir, set_running, unset_running, get_socket_path
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class RawFilesParser():
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def __init__(self, config_file: Path, storage_directory: Path,
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loglevel: int=logging.DEBUG) -> None:
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with open(config_file, 'r') as f:
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module_parameters = json.load(f)
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self.vendor = module_parameters['vendor']
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self.listname = module_parameters['name']
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if 'parser' in module_parameters:
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self.parse_raw_file = types.MethodType(importlib.import_module(module_parameters['parser'], 'bgpranking').parse_raw_file, self)
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self.source = f'{self.vendor}-{self.listname}'
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self.directory = storage_directory / self.vendor / self.listname
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safe_create_dir(self.directory)
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self.unparsable_dir = self.directory / 'unparsable'
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safe_create_dir(self.unparsable_dir)
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self.__init_logger(loglevel)
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self.redis_intake = StrictRedis(unix_socket_path=get_socket_path('intake'), db=0)
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self.logger.debug(f'Starting intake on {self.source}')
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def __init_logger(self, loglevel) -> None:
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self.logger = logging.getLogger(f'{self.__class__.__name__}-{self.vendor}-{self.listname}')
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self.logger.setLevel(loglevel)
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@property
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def files_to_parse(self) -> List[Path]:
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return sorted([f for f in self.directory.iterdir() if f.is_file()], reverse=True)
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def extract_ipv4(self, bytestream: bytes) -> List[bytes]:
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return re.findall(rb'[0-9]+(?:\.[0-9]+){3}', bytestream)
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def strip_leading_zeros(self, ips: List[bytes]) -> List[bytes]:
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'''Helper to get rid of leading 0s in an IP list.
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Only run it when needed, it is nasty and slow'''
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return ['.'.join(str(int(part)) for part in ip.split(b'.')).encode() for ip in ips]
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def parse_raw_file(self, f: BytesIO) -> List[bytes]:
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# If the list doesn't provide a time, fallback to current day, midnight
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self.datetime = datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
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return self.extract_ipv4(f.getvalue())
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def parse_raw_files(self) -> None:
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set_running(f'{self.__class__.__name__}-{self.source}')
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nb_unparsable_files = len([f for f in self.unparsable_dir.iterdir() if f.is_file()])
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if nb_unparsable_files:
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self.logger.warning(f'Was unable to parse {nb_unparsable_files} files.')
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try:
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for filepath in self.files_to_parse:
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self.logger.debug('Parsing {}, {} to go.'.format(filepath, len(self.files_to_parse) - 1))
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with open(filepath, 'rb') as f:
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to_parse = BytesIO(f.read())
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p = self.redis_intake.pipeline()
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for ip in self.parse_raw_file(to_parse):
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if isinstance(ip, tuple):
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ip, datetime = ip
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else:
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datetime = self.datetime
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uuid = uuid4()
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p.hmset(str(uuid), {'ip': ip, 'source': self.source,
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'datetime': datetime.isoformat()})
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p.sadd('intake', str(uuid))
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p.execute()
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self._archive(filepath)
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except Exception as e:
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self.logger.exception("That didn't go well")
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self._unparsable(filepath)
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finally:
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unset_running(f'{self.__class__.__name__}-{self.source}')
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def _archive(self, filepath: Path) -> None:
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'''After processing, move file to the archive directory'''
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filepath.rename(self.directory / 'archive' / filepath.name)
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def _unparsable(self, filepath: Path) -> None:
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'''After processing, move file to the archive directory'''
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filepath.rename(self.unparsable_dir / filepath.name)
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