93 lines
3.1 KiB
Python
93 lines
3.1 KiB
Python
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#!/usr/bin/env python
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__author__ = "Pooja Pathak"
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__email__ = "<pmpathak@ucsd.edu>"
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# This software is Copyright © 2020 The Regents of the University of
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# California. All Rights Reserved. Permission to copy, modify, and
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# distribute this software and its documentation for educational, research
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# and non-profit purposes, without fee, and without a written agreement is
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# hereby granted, provided that the above copyright notice, this paragraph
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# and the following three paragraphs appear in all copies. Permission to
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# make commercial use of this software may be obtained by contacting:
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#
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# Office of Innovation and Commercialization
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#
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# 9500 Gilman Drive, Mail Code 0910
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#
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# University of California
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#
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# La Jolla, CA 92093-0910
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#
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# (858) 534-5815
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#
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# invent@ucsd.edu
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#
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# This software program and documentation are copyrighted by The Regents of
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# the University of California. The software program and documentation are
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# supplied “as is”, without any accompanying services from The Regents. The
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# Regents does not warrant that the operation of the program will be
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# uninterrupted or error-free. The end-user understands that the program
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# was developed for research purposes and is advised not to rely
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# exclusively on the program for any reason.
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#
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# IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
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# INCLUDING LOST PR OFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
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# DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF
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# THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY
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# DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
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# SOFTWARE PROVIDED HEREUNDER IS ON AN “AS IS” BASIS, AND THE UNIVERSITY OF
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# CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
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# ENHANCEMENTS, OR MODIFICATIONS.
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#!/usr/bin/env python
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import pybgpstream
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import os.path
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# Create pybgpstream
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stream = pybgpstream.BGPStream(
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from_time="2017-07-07 00:00:00", until_time="2017-07-07 00:10:00 UTC",
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collectors=["route-views.sg", "route-views.eqix"],
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record_type="updates",
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)
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prefix_asn = dict()
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for elem in stream:
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# record fields can be accessed directly from elem
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if "as-path" in elem.fields:
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asns = elem.fields["as-path"].rstrip().split(" ")
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if "prefix" in elem.fields:
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prefix = elem.fields["prefix"]
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if len(asns) < 1:
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continue
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# Get origin as
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asn = asns[-1]
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# Drop origin as sets
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if len(asn.split(",")) > 1:
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continue
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if asn[0] == '{':
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continue
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# Populate prefix_asn with prefix to asn mapping
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if asn not in prefix_asn:
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prefix_asn[prefix] = set()
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prefix_asn[prefix].add(asn)
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# Write prefix-asn mapping to prefix2asn.dat
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fout = open('prefix2asn.dat', "w")
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for prefix,asns in prefix_asn.items():
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if len(asns) == 1:
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fout.write(prefix)
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fout.write("\t")
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fout.write("".join(prefix_asn[prefix]))
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fout.write("\n")
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fout.close()
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