Jon Hall | 3b489db | 2015-10-05 14:38:37 -0700 | [diff] [blame] | 1 | #!/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 | |
| 9 | from os import environ |
| 10 | from collections import deque, OrderedDict |
| 11 | import re |
| 12 | import json |
| 13 | import sys |
| 14 | |
| 15 | convert = lambda text: int(text) if text.isdigit() else text.lower() |
| 16 | alphanum_key = lambda key: [convert(c) for c in re.split('([0-9]+)', key)] |
| 17 | |
| 18 | def get_OC_vars(): |
| 19 | vars = [] |
| 20 | for var in environ: |
| 21 | if re.match(r"OC[0-9]+", var): |
| 22 | vars.append(var) |
| 23 | return sorted(vars, key=alphanum_key) |
| 24 | |
| 25 | def get_nodes(vars, port=9876): |
| 26 | node = lambda k: { 'id': k, 'ip': k, 'tcpPort': port } |
| 27 | return [ node(environ[v]) for v in vars ] |
| 28 | |
| 29 | def generate_permutations(nodes, k): |
| 30 | l = deque(nodes) |
| 31 | perms = {} |
| 32 | for i in range(1, len(nodes)+1): |
| 33 | perms['p%d' % i] = list(l)[:k] |
| 34 | l.rotate(-1) |
| 35 | return OrderedDict(sorted(perms.iteritems(), key=lambda (k, v): alphanum_key(k))) |
| 36 | |
| 37 | def generate_permutations2(nodes, k): |
| 38 | l = deque(nodes) |
| 39 | perms = {} |
| 40 | for i in range(1, (len(nodes) + 1) / 2 + 1): |
| 41 | perms['p%d' % i] = list(l)[:k] |
| 42 | l.rotate(-2) |
| 43 | return OrderedDict(sorted(perms.iteritems(), key=lambda (k, v): alphanum_key(k))) |
| 44 | |
| 45 | |
| 46 | if __name__ == '__main__': |
| 47 | vars = get_OC_vars() |
| 48 | nodes = get_nodes(vars) |
| 49 | partitions = generate_permutations2(nodes, 3) |
| 50 | data = { |
| 51 | 'nodes': nodes, |
| 52 | 'partitions': partitions |
| 53 | } |
| 54 | output = json.dumps(data, indent=4) |
| 55 | |
| 56 | if len(sys.argv) == 2: |
| 57 | filename = sys.argv[1] |
| 58 | with open(filename, 'w') as f: |
| 59 | f.write(output) |
| 60 | else: |
| 61 | print output |