Mercurial > hg > nginx-quic
annotate contrib/unicode2nginx/unicode-to-nginx.pl @ 4621:c90801720a0c
Upstream: smooth weighted round-robin balancing.
For edge case weights like { 5, 1, 1 } we now produce { a, a, b, a, c, a, a }
sequence instead of { c, b, a, a, a, a, a } produced previously.
Algorithm is as follows: on each peer selection we increase current_weight
of each eligible peer by its weight, select peer with greatest current_weight
and reduce its current_weight by total number of weight points distributed
among peers.
In case of { 5, 1, 1 } weights this gives the following sequence of
current_weight's:
a b c
0 0 0 (initial state)
5 1 1 (a selected)
-2 1 1
3 2 2 (a selected)
-4 2 2
1 3 3 (b selected)
1 -4 3
6 -3 4 (a selected)
-1 -3 4
4 -2 5 (c selected)
4 -2 -2
9 -1 -1 (a selected)
2 -1 -1
7 0 0 (a selected)
0 0 0
To preserve weight reduction in case of failures the effective_weight
variable was introduced, which usually matches peer's weight, but is
reduced temporarily on peer failures.
This change also fixes loop with backup servers and proxy_next_upstream
http_404 (ticket #47), and skipping alive upstreams in some cases if there
are multiple dead ones (ticket #64).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 14 May 2012 09:57:20 +0000 |
parents | 63a820b0bc6c |
children | 8752257e883f |
rev | line source |
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667 | 1 #!/usr/bin/perl -w |
2 | |
3 # Convert unicode mappings to nginx configuration file format. | |
4 | |
5 # You may find useful mappings in various places, including | |
6 # unicode.org official site: | |
7 # | |
8 # http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1251.TXT | |
9 # http://www.unicode.org/Public/MAPPINGS/VENDORS/MISC/KOI8-R.TXT | |
10 | |
11 # Needs perl 5.6 or later. | |
12 | |
13 # Written by Maxim Dounin, mdounin@rambler-co.ru | |
14 | |
15 ############################################################################### | |
16 | |
17 require 5.006; | |
18 | |
19 while (<>) { | |
20 # Skip comments and empty lines | |
21 | |
22 next if /^#/; | |
23 next if /^\s*$/; | |
24 chomp; | |
25 | |
26 # Convert mappings | |
27 | |
28 if (/^\s*0x(..)\s*0x(....)\s*(#.*)/) { | |
29 # Mapping <from-code> <unicode-code> "#" <unicode-name> | |
30 my $cs_code = $1; | |
31 my $un_code = $2; | |
32 my $un_name = $3; | |
33 | |
34 # Produce UTF-8 sequence from character code; | |
35 | |
36 my $un_utf8 = join('', map { sprintf("%02X", $_) } unpack("C*", pack("U", hex($un_code)))); | |
37 | |
38 print " $cs_code $un_utf8 ; $un_name\n"; | |
39 | |
40 } else { | |
41 warn "Unrecognized line: '$_'"; | |
42 } | |
43 } | |
44 | |
45 ############################################################################### |