WIP: Rework complete backend
New crawler, new gobgp based backend, crawls are now based on networkx
This commit is contained in:
parent
87642cc4d9
commit
285ee74560
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@ -4,13 +4,12 @@
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# Written by Sebastian Lohff (seba@someserver.de)
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from __future__ import print_function
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from collections import OrderedDict
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import re
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import socket
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from collections import OrderedDict
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from backend.exceptions import RouterParserException
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class RouterParserException(Exception):
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pass
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def err(msg):
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raise RouterParserException(msg)
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@ -27,6 +26,7 @@ def getBGPData(ip, asno):
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return router
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def getDataFromHost(ip):
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socket.setdefaulttimeout(5)
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x = socket.socket()
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@ -184,9 +184,9 @@ def _birdFindRoutes(info):
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for key in ["path", "nexthop", "network", "iBGP"]:
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if key not in candidate:
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return
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route = {"prefix": candidate["network"], "nexthop": candidate["nexthop"], "path": candidate["path"], "iBGP": candidate["iBGP"]}
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route = {"prefix": candidate["network"], "nexthop": candidate["nexthop"],
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"path": list(map(int, candidate["path"])), "iBGP": candidate["iBGP"]}
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routes.append(route)
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pass
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routes = []
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candidate = None
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@ -347,7 +347,8 @@ def _quaggaFindRoutes(raw):
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# currently skip incomplete routes
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if '?' not in path:
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route = {"prefix": d["network"], "nexthop": d["nexthop"], "path": path, "iBGP": d["origin"] == "i"}
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route = {"prefix": d["network"], "nexthop": d["nexthop"],
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"path": list(map(int, path)), "iBGP": d["origin"] == "i"}
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routes.append(route)
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return routes
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@ -0,0 +1,192 @@
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import json
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import logging
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import socket
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import time
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from django.utils import timezone
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import networkx as nx
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from backend import gobgp, cmk_parser
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from backend.exceptions import RouterParserException
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from bgpdata.models import ConfigHost, ASLastSeen, ASLastSeenNeighbor, CrawlRun
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log = logging.getLogger(__name__)
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FORMAT = '%(asctime)-15s %(message)s'
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logging.basicConfig(level=logging.INFO, format=FORMAT)
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log.setLevel(logging.INFO)
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def crawl():
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net = get_current_network()
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crawl = make_crawl_from_net(net)
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crawl.save()
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# handle last seen ASNs
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log.info("Updating last seen info")
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last_seen = {}
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for asls in ASLastSeen.objects.all():
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last_seen[asls.asn] = asls
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for asn, node in net.nodes(data=True):
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if asn not in last_seen:
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last_seen[asn] = ASLastSeen(asn=asn)
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asls = last_seen[asn]
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# print(asn, node)
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asls.online = node['online']
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if node['online']:
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asls.directlyCrawled = node['directly_crawled']
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asls.lastSeen = timezone.now()
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asls.crawlLastSeen = crawl
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else:
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asls.directlyCrawled = False
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asls.save()
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if asls.online:
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neighs = net.neighbors(asn)
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db_neighs = set()
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for db_neigh in asls.aslastseenneighbor_set.all():
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if db_neigh.asn in neighs:
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db_neighs.add(asls.asn)
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else:
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db_neigh.delete()
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for neigh in neighs:
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if neigh not in db_neighs:
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asneigh = ASLastSeenNeighbor(asn=neigh, neighbor=asls)
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asneigh.save()
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db_neighs.add(neigh)
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log.info("Automated crawl done")
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def make_crawl_from_net(net):
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"""Create a CrawlRun, but don't save it"""
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asCount = asOnlineCount = asOfflineCount = 0
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for asn, node in net.nodes(data=True):
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asCount += 1
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if node['online']:
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asOnlineCount += 1
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else:
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asOfflineCount += 1
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crawl = CrawlRun()
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crawl.startTime = timezone.now()
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crawl.graph = net_to_json(net)
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crawl.asCount = asCount
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crawl.asOnlineCount = asOnlineCount
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crawl.asOfflineCount = asOfflineCount
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crawl.peeringCount = len(net.edges)
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return crawl
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def get_current_network():
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net = nx.Graph()
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crawl_start = time.time()
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log.info("Crawl run started")
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for host in ConfigHost.objects.all():
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try:
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if host.checkMethod == 'CMK':
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data = cmk_parser.getBGPData(host.ip, host.number)
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_add_data_to_net(net, data)
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elif host.checkMethod == 'GOBGP':
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for entry in gobgp.get_bgp_data(host.ip):
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_add_data_to_net(net, entry)
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except (RouterParserException, socket.error):
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log.exception("Could not get data from host %s method %s", host, host.checkMethod)
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continue
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log.info("Adding last seen neighbor info")
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for asls in ASLastSeen.objects.all():
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if asls.asn not in net.nodes:
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if any(neigh.asn in net.nodes for neigh in asls.aslastseenneighbor_set.all()):
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_populate_node(net, asls.asn)
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net.nodes[asls.asn]['online'] = False
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for neigh in asls.aslastseenneighbor_set.all():
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if neigh.asn not in net.nodes:
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_populate_node(net, neigh.asn)
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net.nodes[asls.asn]['online'] = False
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log.info("Crawl done in %.2fs", time.time() - crawl_start)
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print("{} nodes, {} edges".format(len(net.nodes), len(net.edges)))
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# add id to edges
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for n, (_, _, data) in enumerate(net.edges(data=True)):
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data['id'] = n
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# import IPython
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# IPython.embed()
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return net
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def net_to_json(net):
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"""Dum net to json, will replace all sets from the graph"""
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# replace all sets with lists for better dumpability
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for node in net.nodes.values():
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for key, val in node.items():
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if isinstance(val, set):
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node[key] = list(val)
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return json.dumps(nx.readwrite.json_graph.node_link_data(net))
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def _populate_node(net, asn):
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net.add_node(asn)
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node = net.nodes[asn]
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node.setdefault("prefixes", set())
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node.setdefault("router_ids", set())
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node.setdefault("routing_table", set())
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node.setdefault("directly_crawled", False)
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node.setdefault("online", True)
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return node
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def _add_data_to_net(net, data):
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asn = data['local_as']
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as_node = _populate_node(net, asn)
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as_node['router_ids'].add(data['local_id'])
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as_node['directly_crawled'] = True
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for peer in data['peers']:
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pass
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for route in data['routes']:
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as_node['routing_table'].add((route['prefix'], tuple(route['path'])))
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as_path = route['path']
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if not as_path:
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continue
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orig_node = _populate_node(net, as_path[0])
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orig_node['prefixes'].add(route['prefix'])
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for n in range(len(as_path) - 1):
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if as_path[n] != as_path[n + 1]:
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if as_path[n + 1] not in net.nodes:
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_populate_node(net, as_path[n + 1])
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net.add_edge(as_path[n], as_path[n + 1])
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def convert_crawl(crawl):
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net = nx.Graph()
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for asn in crawl.as_set.all():
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if asn.number not in net.nodes:
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_populate_node(net, asn.number)
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d = net.nodes[asn.number]
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d['online'] = asn.online
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d['directly_crawled'] = asn.directlyCrawled
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for br in asn.borderrouter_set.all():
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d['router_ids'].add(br.routerID)
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for asn in crawl.as_set.all():
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for peering in asn.getPeerings():
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net.add_edge(peering.as1.number, peering.as2.number)
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for ann in asn.announcement_set.all():
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prefix = "{}/{}".format(ann.ip, ann.prefix)
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path = list(map(int, ann.ASPath.split()))
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net.nodes[asn.number]['routing_table'].add((prefix, tuple(path)))
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net.nodes[path[-1]]['prefixes'].add(prefix)
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print(net_to_json(net))
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@ -0,0 +1,2 @@
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class RouterParserException(Exception):
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pass
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@ -3,7 +3,7 @@
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# Written by Sebastian Lohff (seba@someserver.de)
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from django.contrib import admin
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from bgpdata.models import ConfigHost, CrawlRun, CrawlLog, AS, BorderRouter, Announcement, Peering, BorderRouterPair
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from bgpdata.models import ConfigHost, CrawlRun, CrawlLog, AS, BorderRouter, Announcement, Peering, BorderRouterPair, ASLastSeen, ASLastSeenNeighbor
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# Register your models here.
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admin.site.register(ConfigHost)
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@ -14,3 +14,5 @@ admin.site.register(BorderRouter)
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admin.site.register(Announcement)
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admin.site.register(Peering)
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admin.site.register(BorderRouterPair)
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admin.site.register(ASLastSeen)
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admin.site.register(ASLastSeenNeighbor)
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@ -6,8 +6,10 @@ from tastypie.resources import ModelResource, ALL_WITH_RELATIONS, ALL
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from tastypie import fields
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from bgpdata.models import AS, CrawlRun, Announcement, BorderRouter
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class ASResource(ModelResource):
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crawl = fields.ForeignKey("bgpdata.api.CrawlResource", "crawl")
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class Meta:
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list_allowed_methods = ['get']
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detail_allowed_methods = ['get']
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@ -16,13 +18,23 @@ class ASResource(ModelResource):
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queryset = AS.objects.all()
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resource_name = "as"
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class CrawlResource(ModelResource):
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class Meta:
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queryset = CrawlRun.objects.all()
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resource_name = "crawl"
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excludes = ["graph"]
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class CrawlGraphResource(ModelResource):
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class Meta:
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queryset = CrawlRun.objects.all()
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resource_name = "crawl_graph"
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class BorderRouterResource(ModelResource):
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AS = fields.ForeignKey("bgpdata.api.ASResource", "AS")
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class Meta:
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list_allowed_methods = ['get']
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detail_allowed_methods = ['get']
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@ -31,8 +43,10 @@ class BorderRouterResource(ModelResource):
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queryset = BorderRouter.objects.all()
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resource_name = "borderrouter"
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class AnnouncementResource(ModelResource):
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router = fields.ForeignKey("bgpdata.api.BorderRouterResource", "router")
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class Meta:
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list_allowed_methods = ['get']
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detail_allowed_methods = ['get']
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@ -23,12 +23,14 @@ class ConfigHost(models.Model):
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def __str__(self):
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return "%s (%s / %s)" % (self.name, self.number, self.ip)
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class CrawlRun(models.Model):
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# time start, time end,
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startTime = models.DateTimeField()
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endTime = models.DateTimeField(null=True, blank=True)
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hostsCrawled = models.ManyToManyField(ConfigHost, null=True, blank=True)
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graph = models.TextField()
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asCount = models.IntegerField(default=0)
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asOnlineCount = models.IntegerField(default=0)
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@ -40,14 +42,16 @@ class CrawlRun(models.Model):
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def countAS(self):
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return self.asCount
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def countASOnline(self):
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return self.asOnlineCount
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def countASOffline(self):
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return self.asOfflineCount
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#return self.as_set.filter(online=False).count()
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def countPeerings(self):
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return self.peeringCount
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#return Peering.objects.filter(Q(as1__crawl=self)|Q(as2__crawl=self)).count()
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class CrawlLog(models.Model):
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INFO = 'INFO'
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@ -83,6 +87,7 @@ class CrawlLog(models.Model):
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host = "host %s - " % self.host.name if self.host else ""
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return "Log %s %s: %s%s" % (self.get_severity_display(), self.logtime, host, self.message)
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class AS(models.Model):
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# asno
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crawl = models.ForeignKey(CrawlRun)
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@ -117,6 +122,7 @@ class AS(models.Model):
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if self.lastSeen:
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return self.lastSeen.startTime.strftime("%d.%m.%Y %H:%I")
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class BorderRouter(models.Model):
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# as id, ip, check method, pingable, reachable
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# unique: (crawl_id, asno, as id)
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@ -131,6 +137,7 @@ class BorderRouter(models.Model):
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r = "r" if self.reachable else "!r"
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return "Router %s (AS %s, %s%s)" % (self.routerID, self.AS.number, p, r)
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class Announcement(models.Model):
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router = models.ForeignKey(BorderRouter)
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@ -146,6 +153,7 @@ class Announcement(models.Model):
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def __str__(self):
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return "%s/%s via %s (crawl %s)" % (self.ip, self.prefix, self.ASPath, self.router.AS.crawl.pk)
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class Peering(models.Model):
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DIRECT = 'direct'
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PATH = 'path'
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@ -164,7 +172,8 @@ class Peering(models.Model):
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origin = models.CharField(max_length=10, choices=ORIGIN)
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def __str__(self):
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return "AS %s <--> AS %s (%s, crawl %s)" % (self.as1.number, self.as2.number, self.get_origin_display(), self.as1.crawl.pk)
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return "AS %s <--> AS %s (%s, crawl %s)" % (self.as1.number, self.as2.number,
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self.get_origin_display(), self.as1.crawl.pk)
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def containsAS(self, AS):
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return AS in (self.as1, self.as2)
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@ -177,6 +186,7 @@ class Peering(models.Model):
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except Peering.DoesNotExist:
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return Peering.objects.get(as1=as2, as2=as1)
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class BorderRouterPair(models.Model):
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peering = models.ForeignKey(Peering)
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router1 = models.ForeignKey(BorderRouter, default=None, blank=True, null=True, related_name='routerpair1')
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@ -191,3 +201,20 @@ class BorderRouterPair(models.Model):
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return BorderRouterPair.objects.get(peering=peering, router1=router1, router2=router2)
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except BorderRouterPair.DoesNotExist:
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return BorderRouterPair.objects.get(peering=peering, router1=router2, router2=router1)
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class ASLastSeen(models.Model):
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asn = models.IntegerField(db_index=True, unique=True)
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directlyCrawled = models.BooleanField(default=False)
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online = models.BooleanField()
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lastSeen = models.DateTimeField(blank=True, null=True)
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crawlLastSeen = models.ForeignKey(CrawlRun)
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def __str__(self):
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return ("AS{} {}, last seen {} (crawl {})"
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.format(self.asn, "online" if self.online else "offline", self.lastSeen, self.crawlLastSeen.pk))
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class ASLastSeenNeighbor(models.Model):
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asn = models.IntegerField()
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neighbor = models.ForeignKey(ASLastSeen)
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@ -4,23 +4,25 @@
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from django.conf.urls import url, include
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from bgpdata.api import ASResource, CrawlResource, BorderRouterResource, AnnouncementResource
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from bgpdata.api import ASResource, CrawlResource, CrawlGraphResource, BorderRouterResource, AnnouncementResource
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from bgpdata import views as bgpdata_views
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asResource = ASResource()
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crawlResource = CrawlResource()
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crawlGraphResource = CrawlGraphResource()
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borderRouterResource = BorderRouterResource()
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announcementResource = AnnouncementResource()
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urlpatterns = (
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url(r'^$', bgpdata_views.overview),
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url(r'^([0-9]+)/$', bgpdata_views.showMap),
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url(r'^new/([0-9]+|live)/$', bgpdata_views.show_new_map),
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# url(r'^api/crawl/(?P<crawlID>\d+)/asses/$', 'bgpdata.api.asses'),
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# (r'^api/', include(asResource.urls)),
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url(r'^api/', include(asResource.urls)),
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url(r'^api/', include(crawlResource.urls)),
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url(r'^api/', include(crawlGraphResource.urls)),
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url(r'^api/', include(borderRouterResource.urls)),
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url(r'^api/', include(announcementResource.urls)),
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)
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@ -1,16 +1,19 @@
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# This file is part of dnmapper, an AS--level mapping tool
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# Licensed under GNU General Public License v3 or later
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# Written by Sebastian Lohff (seba@someserver.de)
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|
||||
from django.shortcuts import render
|
||||
from bgpdata.models import CrawlRun, AS, Peering
|
||||
from django.core.paginator import Paginator
|
||||
|
||||
from bgpdata.models import CrawlRun, AS, Peering
|
||||
from backend import crawler
|
||||
|
||||
|
||||
def overview(request):
|
||||
crawls = CrawlRun.objects.order_by("-startTime")
|
||||
crawlsPage = Paginator(crawls, 200)
|
||||
return render(request, 'bgpdata/overview.html', {"crawls": crawlsPage.page(1)})
|
||||
|
||||
|
||||
def showMap(request, crawlId):
|
||||
crawl = None
|
||||
try:
|
||||
|
|
@ -22,3 +25,17 @@ def showMap(request, crawlId):
|
|||
peerings = Peering.objects.filter(as1__crawl=crawl)
|
||||
|
||||
return render(request, 'bgpdata/map.html', {"crawl": crawl, 'ASses': ASses, 'peerings': peerings})
|
||||
|
||||
|
||||
def show_new_map(request, crawl_id):
|
||||
crawl = None
|
||||
if crawl_id == 'live':
|
||||
net = crawler.get_current_network()
|
||||
crawl = crawler.make_crawl_from_net(net)
|
||||
else:
|
||||
try:
|
||||
crawl = CrawlRun.objects.get(id=crawl_id)
|
||||
except CrawlRun.DoesNotExist:
|
||||
return render(request, "bgpdata/no-map-found.html", {"crawl_id": crawl_id})
|
||||
|
||||
return render(request, 'bgpdata/new_new_map.html', {"crawl": crawl})
|
||||
|
|
|
|||
|
|
@ -0,0 +1,28 @@
|
|||
#!/usr/bin/env python
|
||||
import argparse
|
||||
import os
|
||||
import sys
|
||||
sys.path.append("..")
|
||||
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "dnmapper.settings")
|
||||
import django
|
||||
django.setup()
|
||||
|
||||
from backend.crawler import convert_crawl
|
||||
from bgpdata.models import CrawlRun
|
||||
|
||||
|
||||
def main():
|
||||
parser = argparse.ArgumentParser()
|
||||
parser.add_argument("-c", "--crawl-id", type=int)
|
||||
args = parser.parse_args()
|
||||
|
||||
try:
|
||||
crawl = CrawlRun.objects.get(pk=args.crawl_id)
|
||||
except CrawlRun.DoesNotExist:
|
||||
parser.error("CrawlRun with id {} does not exist".format(args.crawl_id))
|
||||
|
||||
convert_crawl(crawl)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
|
|
@ -19,8 +19,7 @@ from django.utils import timezone
|
|||
from django.db.models import Q, Max
|
||||
|
||||
from bgpdata.models import ConfigHost, CrawlRun, CrawlLog, AS, BorderRouter, Announcement, Peering, BorderRouterPair
|
||||
from routerparsers import getBGPData, RouterParserException
|
||||
from backend import gobgp
|
||||
from backend import gobgp, cmk_parser
|
||||
|
||||
# config
|
||||
LAST_SEEN_DAYS = 7
|
||||
|
|
@ -53,13 +52,13 @@ def main():
|
|||
print(" -- Getting data for host %s" % host)
|
||||
try:
|
||||
if host.checkMethod == 'CMK':
|
||||
data = [getBGPData(host.ip, host.number)]
|
||||
data = [cmk_parser.getBGPData(host.ip, host.number)]
|
||||
elif host.checkMethod == 'GOBGP':
|
||||
data = gobgp.get_bgp_data(host.ip)
|
||||
else:
|
||||
CrawlLog.log(crawl, "Method %s is not currently supported, skipping host" % host.checkMethod, host=host, severity=CrawlLog.ERROR)
|
||||
continue
|
||||
except RouterParserException as e:
|
||||
except cmk_parser.RouterParserException as e:
|
||||
msg = "Could not parse data for host: %s" % str(e)
|
||||
print("%s: %s" % (host, msg))
|
||||
CrawlLog.log(crawl, msg, host=host, severity=CrawlLog.ERROR)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,17 @@
|
|||
#!/usr/bin/env python
|
||||
import os
|
||||
import sys
|
||||
sys.path.append("..")
|
||||
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "dnmapper.settings")
|
||||
import django
|
||||
django.setup()
|
||||
|
||||
from backend.crawler import crawl
|
||||
|
||||
|
||||
def main():
|
||||
crawl()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue