108 lines
5.6 KiB
Python
108 lines
5.6 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import logging
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from redis import StrictRedis
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from .libs.helpers import set_running, unset_running, get_socket_path, load_config_files, get_ipasn, sanity_check_ipasn
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from datetime import datetime, date, timedelta
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from ipaddress import ip_network
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from pathlib import Path
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class Ranking():
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def __init__(self, config_dir: Path=None, loglevel: int=logging.DEBUG):
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self.__init_logger(loglevel)
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self.storage = StrictRedis(unix_socket_path=get_socket_path('storage'), decode_responses=True)
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self.ranking = StrictRedis(unix_socket_path=get_socket_path('storage'), db=1, decode_responses=True)
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self.ipasn = get_ipasn()
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self.config_dir = config_dir
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def __init_logger(self, loglevel):
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self.logger = logging.getLogger(f'{self.__class__.__name__}')
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self.logger.setLevel(loglevel)
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def rank_a_day(self, day: str, config_files: dict):
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asns_aggregation_key_v4 = f'{day}|asns|v4'
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asns_aggregation_key_v6 = f'{day}|asns|v6'
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to_delete = set([asns_aggregation_key_v4, asns_aggregation_key_v6])
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r_pipeline = self.ranking.pipeline()
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cached_meta = {}
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for source in self.storage.smembers(f'{day}|sources'):
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self.logger.info(f'{day} - Ranking source: {source}')
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source_aggregation_key_v4 = f'{day}|{source}|asns|v4'
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source_aggregation_key_v6 = f'{day}|{source}|asns|v6'
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to_delete.update([source_aggregation_key_v4, source_aggregation_key_v6])
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for asn in self.storage.smembers(f'{day}|{source}'):
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prefixes_aggregation_key_v4 = f'{day}|{asn}|v4'
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prefixes_aggregation_key_v6 = f'{day}|{asn}|v6'
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to_delete.update([prefixes_aggregation_key_v4, prefixes_aggregation_key_v6])
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if asn == '0':
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# Default ASN when no matches. Probably spoofed.
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continue
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self.logger.debug(f'{day} - Ranking source: {source} / ASN: {asn}')
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asn_rank_v4 = 0.0
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asn_rank_v6 = 0.0
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for prefix in self.storage.smembers(f'{day}|{source}|{asn}'):
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if prefix == 'None':
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# This should not happen and requires a DB cleanup.
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self.logger.critical(f'Fucked up prefix in "{day}|{source}|{asn}"')
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continue
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ips = set([ip_ts.split('|')[0]
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for ip_ts in self.storage.smembers(f'{day}|{source}|{asn}|{prefix}')])
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py_prefix = ip_network(prefix)
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prefix_rank = float(len(ips)) / py_prefix.num_addresses
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r_pipeline.zadd(f'{day}|{source}|{asn}|v{py_prefix.version}|prefixes', {prefix: prefix_rank})
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if py_prefix.version == 4:
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asn_rank_v4 += len(ips) * config_files[source]['impact']
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r_pipeline.zincrby(prefixes_aggregation_key_v4, prefix_rank * config_files[source]['impact'], prefix)
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else:
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asn_rank_v6 += len(ips) * config_files[source]['impact']
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r_pipeline.zincrby(prefixes_aggregation_key_v6, prefix_rank * config_files[source]['impact'], prefix)
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if asn in cached_meta:
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v4info = cached_meta[asn]['v4']
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v6info = cached_meta[asn]['v6']
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else:
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v4info = self.ipasn.asn_meta(asn=asn, source='caida', address_family='v4', date=day)
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v6info = self.ipasn.asn_meta(asn=asn, source='caida', address_family='v6', date=day)
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cached_meta[asn] = {'v4': v4info, 'v6': v6info}
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ipasnhistory_date_v4 = list(v4info['response'].keys())[0]
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v4count = v4info['response'][ipasnhistory_date_v4][asn]['ipcount']
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ipasnhistory_date_v6 = list(v6info['response'].keys())[0]
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v6count = v6info['response'][ipasnhistory_date_v6][asn]['ipcount']
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if v4count:
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asn_rank_v4 /= float(v4count)
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if asn_rank_v4:
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r_pipeline.set(f'{day}|{source}|{asn}|v4', asn_rank_v4)
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r_pipeline.zincrby(asns_aggregation_key_v4, asn_rank_v4, asn)
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r_pipeline.zadd(source_aggregation_key_v4, {asn: asn_rank_v4})
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if v6count:
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asn_rank_v6 /= float(v6count)
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if asn_rank_v6:
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r_pipeline.set(f'{day}|{source}|{asn}|v6', asn_rank_v6)
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r_pipeline.zincrby(asns_aggregation_key_v6, asn_rank_v6, asn)
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r_pipeline.zadd(source_aggregation_key_v6, {asn: asn_rank_v6})
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self.ranking.delete(*to_delete)
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r_pipeline.execute()
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def compute(self):
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config_files = load_config_files(self.config_dir)
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ready, message = sanity_check_ipasn(self.ipasn)
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if not ready:
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# Try again later.
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self.logger.warning(message)
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return
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self.logger.debug(message)
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self.logger.info('Start ranking')
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set_running(self.__class__.__name__)
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today = date.today()
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now = datetime.now()
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today12am = now.replace(hour=12, minute=0, second=0, microsecond=0)
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if now < today12am:
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# Compute yesterday and today's ranking (useful when we have lists generated only once a day)
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self.rank_a_day((today - timedelta(days=1)).isoformat(), config_files)
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self.rank_a_day(today.isoformat(), config_files)
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unset_running(self.__class__.__name__)
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self.logger.info('Ranking done.')
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