1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2014-2015, NORDUnet A/S.
# See LICENSE for licensing information.
#
# Fetch new entries from all storage nodes.
# See catlfish/doc/merge.txt for more about the merge process.
#
import sys
import struct
import subprocess
import requests
from time import sleep
from mergetools import get_logorder, verify_entry, get_new_entries, \
chunks, fsync_logorder, get_entries, add_to_logorder, \
hexencode, parse_args, perm
from certtools import timing_point, write_file, create_ssl_context
def merge_fetch(args, config, localconfig):
paths = localconfig["paths"]
storagenodes = config["storagenodes"]
mergedb = paths["mergedb"]
logorderfile = mergedb + "/logorder"
chainsdb = perm(localconfig.get("dbbackend", "filedb"), mergedb + "/chains")
own_key = (localconfig["nodename"],
"%s/%s-private.pem" % (paths["privatekeys"],
localconfig["nodename"]))
timing = timing_point()
logorder = get_logorder(logorderfile)
timing_point(timing, "get logorder")
certsinlog = set(logorder)
new_entries_per_node = {}
new_entries = set()
entries_to_fetch = {}
for storagenode in storagenodes:
print >>sys.stderr, "getting new entries from", storagenode["name"]
sys.stderr.flush()
new_entries_per_node[storagenode["name"]] = \
set(get_new_entries(storagenode["name"],
"https://%s/" % storagenode["address"],
own_key, paths))
new_entries.update(new_entries_per_node[storagenode["name"]])
entries_to_fetch[storagenode["name"]] = []
timing_point(timing, "get new entries")
new_entries -= certsinlog
print >>sys.stderr, "adding", len(new_entries), "entries"
sys.stderr.flush()
for ehash in new_entries:
for storagenode in storagenodes:
if ehash in new_entries_per_node[storagenode["name"]]:
entries_to_fetch[storagenode["name"]].append(ehash)
break
verifycert = subprocess.Popen(
[paths["verifycert_bin"], paths["known_roots"]],
stdin=subprocess.PIPE, stdout=subprocess.PIPE)
added_entries = 0
for storagenode in storagenodes:
print >>sys.stderr, "getting %d entries from %s:" % \
(len(entries_to_fetch[storagenode["name"]]), storagenode["name"]),
sys.stderr.flush()
with requests.sessions.Session() as session:
for chunk in chunks(entries_to_fetch[storagenode["name"]], 100):
entries = get_entries(storagenode["name"],
"https://%s/" % storagenode["address"],
own_key, paths, chunk, session=session)
for ehash in chunk:
entry = entries[ehash]
verify_entry(verifycert, entry, ehash)
chainsdb.add(ehash, entry)
add_to_logorder(logorderfile, ehash)
logorder.append(ehash)
certsinlog.add(ehash)
added_entries += 1
print >>sys.stderr, added_entries,
sys.stderr.flush()
print >>sys.stderr
sys.stderr.flush()
chainsdb.commit()
fsync_logorder(logorderfile)
timing_point(timing, "add entries")
print >>sys.stderr, "added", added_entries, "entries"
sys.stderr.flush()
verifycert.communicate(struct.pack("I", 0))
if args.timing:
print >>sys.stderr, "timing: merge_fetch:", timing["deltatimes"]
sys.stderr.flush()
tree_size = len(logorder)
if tree_size == 0:
return (0, '')
else:
return (tree_size, logorder[tree_size-1])
def main():
"""
Fetch new entries from all storage nodes.
Indicate current position by writing the index in the logorder file
(0-based) to the 'fetched' file.
Sleep some and start over.
"""
args, config, localconfig = parse_args()
paths = localconfig["paths"]
mergedb = paths["mergedb"]
currentsizefile = mergedb + "/fetched"
create_ssl_context(cafile=paths["https_cacertfile"])
while True:
logsize, last_hash = merge_fetch(args, config, localconfig)
currentsize = {"index": logsize - 1, "hash": hexencode(last_hash)}
#print >>sys.stderr, "DEBUG: writing to", currentsizefile, ":", currentsize
write_file(currentsizefile, currentsize)
if args.interval is None:
break
print >>sys.stderr, "sleeping", args.interval, "seconds"
sleep(args.interval)
if __name__ == '__main__':
sys.exit(main())
|
