blob: 06c5ec95f3ab7c25c35ce4b6878245862a52725a [file] [log] [blame]
Jon Hall6e709752016-02-01 13:38:46 -08001#!/usr/bin/env python
2"""
3 Generate the partitions json file from the $OC* environment variables
4
5 Usage: onos-gen-partitions [output file]
6 If output file is not provided, the json is written to stdout.
7"""
8
9from os import environ
10from collections import deque, OrderedDict
11import re
12import json
13import sys
14import hashlib
15
16convert = lambda text: int(text) if text.isdigit() else text.lower()
17alphanum_key = lambda key: [convert(c) for c in re.split('([0-9]+)', key)]
18
19def get_OC_vars():
20 vars = []
21 for var in environ:
22 if re.match(r"OC[0-9]+", var):
23 vars.append(var)
24 return sorted(vars, key=alphanum_key)
25
26def get_nodes(vars, port=9876):
27 node = lambda k: { 'id': k, 'ip': k, 'port': port }
28 return [ node(environ[v]) for v in vars ]
29
30def generate_base_partition(nodes):
31 return {
32 'id': 0,
33 'members': nodes
34 }
35
36def generate_extended_partitions(nodes, k):
37 l = deque(nodes)
38 perms = []
39 for i in range(1, len(nodes)+1):
40 part = {
41 'id': i,
42 'members': list(l)[:k]
43 }
44 perms.append(part)
45 l.rotate(-1)
46 return perms
47
48def generate_extended_partitions_HA(nodes, k):
49 l = deque(nodes)
50 perms = []
51 for i in range(1, (len(nodes) + 1) / 2 + 1):
52 part = {
53 'id': i,
54 'members': list(l)[:k]
55 }
56 perms.append(part)
57 l.rotate(-2)
58 return perms
59
60if __name__ == '__main__':
61 vars = get_OC_vars()
62 nodes = get_nodes(vars)
63 base_partition = generate_base_partition([v.get('id') for v in nodes])
64 extended_partitions = generate_extended_partitions_HA([v.get('id') for v in nodes], 3)
65 partitions = []
66 partitions.append(base_partition)
67 partitions.extend(extended_partitions)
68 name = 0
69 for node in nodes:
70 name = name ^ hash(node['ip'])
71 data = {
72 'name': name,
73 'nodes': nodes,
74 'partitions': partitions
75 }
76 output = json.dumps(data, indent=4)
77
78 if len(sys.argv) == 2:
79 filename = sys.argv[1]
80 with open(filename, 'w') as f:
81 f.write(output)
82 else:
83 print output