114 lines
3.8 KiB
Python
Executable file
114 lines
3.8 KiB
Python
Executable file
#!/usr/bin/env python3
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"""
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backend.py - ffmap-backend runner
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https://github.com/ffnord/ffmap-backend
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"""
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import argparse
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import json
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import os
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from datetime import datetime
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import networkx as nx
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from networkx.readwrite import json_graph
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from lib import graph, nodes
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from lib.alfred import Alfred
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from lib.batman import Batman
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from lib.rrddb import RRD
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def main(params):
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nodes_fn = os.path.join(params['dest_dir'], 'nodes.json')
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graph_fn = os.path.join(params['dest_dir'], 'graph.json')
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now = datetime.utcnow().replace(microsecond=0)
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with open(nodes_fn, 'r') as nodedb_handle:
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nodedb = json.load(nodedb_handle)
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# flush nodedb if it uses the old format
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if 'links' in nodedb:
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nodedb = {'nodes': dict()}
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nodedb['timestamp'] = now.isoformat()
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for node_id, node in nodedb['nodes'].items():
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node['flags']['online'] = False
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alfred = Alfred(unix_sockpath=params['alfred_sock'])
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nodes.import_nodeinfo(nodedb['nodes'], alfred.nodeinfo(),
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now, assume_online=True)
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for aliases in params['aliases']:
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with open(aliases, 'r') as f:
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nodes.import_nodeinfo(nodedb['nodes'], json.load(f),
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now, assume_online=False)
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nodes.reset_statistics(nodedb['nodes'])
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nodes.import_statistics(nodedb['nodes'], alfred.statistics())
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bm = list(map(lambda d:
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(d.vis_data(True), d.gateway_list()),
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map(Batman, params['mesh'])))
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for vis_data, gateway_list in bm:
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nodes.import_mesh_ifs_vis_data(nodedb['nodes'], vis_data)
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nodes.import_vis_clientcount(nodedb['nodes'], vis_data)
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nodes.mark_vis_data_online(nodedb['nodes'], vis_data, now)
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nodes.mark_gateways(nodedb['nodes'], gateway_list)
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if params['prune']:
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nodes.prune_nodes(nodedb['nodes'], now, int(params['prune']))
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batadv_graph = nx.DiGraph()
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for vis_data, gateway_list in bm:
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graph.import_vis_data(batadv_graph, nodedb['nodes'], vis_data)
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if params['vpn']:
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graph.mark_vpn(batadv_graph, frozenset(params['vpn']))
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batadv_graph = graph.merge_nodes(batadv_graph)
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batadv_graph = graph.to_undirected(batadv_graph)
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with open(nodes_fn, 'w') as f:
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json.dump(nodedb, f)
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with open(graph_fn, 'w') as f:
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json.dump({'batadv': json_graph.node_link_data(batadv_graph)}, f)
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if params['rrd']:
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script_directory = os.path.dirname(os.path.realpath(__file__))
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rrd = RRD(os.path.join(script_directory, 'nodedb'),
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os.path.join(params['dest_dir'], 'nodes'))
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rrd.update_database(nodedb['nodes'])
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rrd.update_images()
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('-a', '--aliases',
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help='read aliases from FILE',
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default=[], action='append',
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metavar='FILE')
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parser.add_argument('-m', '--mesh', action='append',
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default=['bat0'],
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help='batman mesh interface (defaults to bat0)')
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parser.add_argument('-s', '--alfred-sock',
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default=None,
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help='alfred unix socket path')
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parser.add_argument('-d', '--dest-dir', action='store',
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help='destination directory for generated files',
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required=True)
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parser.add_argument('--vpn', action='append', metavar='MAC',
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help='assume MAC to be part of the VPN')
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parser.add_argument('--prune', metavar='DAYS',
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help='forget nodes offline for at least DAYS')
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parser.add_argument('--rrd', dest='rrd', action='store_true',
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default=False,
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help='create RRD graphs')
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options = vars(parser.parse_args())
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main(options)
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