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annotate proxy_cache_lock_ssi.t @ 572:ca54b445d982

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Tests: masked nginx bug in proxy next upstream. When iterating through several next upstreams per a worker cycle, a previously reported event about upstream connection error may be improperly applied to the next upstream, thus leading to the invalid connection error. E.g., in kqueue, where the problem is visible, this is caused by "ev->instance" that does not tolerate more than one next upstream at once, and kevents placed on the kqueue separately for read and write events. The change is to limit test case to the only one next upstream.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 14 May 2015 11:54:24 +0300
parents 907e89fba9c3
children 2cd00179f4b2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/perl
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2
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3 # (C) Maxim Dounin
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4
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5 # Tests for http proxy cache lock with subrequests.
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6
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7 ###############################################################################
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8
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9 use warnings;
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10 use strict;
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11
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12 use Test::More;
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13
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14 BEGIN { use FindBin; chdir($FindBin::Bin); }
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15
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16 use lib 'lib';
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17 use Test::Nginx qw/ :DEFAULT http_end /;
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18
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19 ###############################################################################
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20
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21 select STDERR; $| = 1;
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22 select STDOUT; $| = 1;
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23
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24 plan(skip_all => 'win32') if $^O eq 'MSWin32';
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25
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26 my $t = Test::Nginx->new()->has(qw/http proxy cache ssi/)
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27 ->write_file_expand('nginx.conf', <<'EOF')->plan(2);
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28
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29 %%TEST_GLOBALS%%
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30
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31 daemon off;
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32
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33 events {
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34 }
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35
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36 http {
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37 %%TEST_GLOBALS_HTTP%%
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38
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39 proxy_cache_path %%TESTDIR%%/cache levels=1:2
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40 keys_zone=NAME:1m;
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41
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42 limit_req_zone $binary_remote_addr zone=one:1m rate=1r/m;
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43
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44 server {
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45 listen 127.0.0.1:8080;
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46 server_name localhost;
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47
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48 location / {
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49 proxy_pass http://127.0.0.1:8081;
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50 proxy_cache NAME;
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51
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52 proxy_cache_lock on;
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53 proxy_cache_lock_timeout 100ms;
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54
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55 proxy_read_timeout 2s;
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57 add_header X-Msec $msec;
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58 }
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60 location = /ssi.html {
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61 ssi on;
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62 }
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63 }
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64
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65 server {
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66 listen 127.0.0.1:8081;
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67 server_name localhost;
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68 limit_req zone=one burst=5;
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69 }
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70
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71 }
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72
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73 EOF
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74
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75 $t->write_file('ssi.html',
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76 '<!--#include virtual="/active" -->' .
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77 '<!--#include virtual="/locked" -->' .
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78 'end'
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79 );
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80
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81 $t->write_file('active', 'active');
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82 $t->write_file('locked', 'locked');
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83
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84 $t->run();
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85
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86 ###############################################################################
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87
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88 # problem: if proxy cache lock wakeup happens in a an inactive
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89 # subrequest, just a connection write event may not trigger any
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90 # further work
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91
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92 # main request -> subrequest /active (waiting for a backend),
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93 # -> subrequest /locked (locked by another request)
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94
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95 # this doesn't result in an infinite timeout as second subrequest
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96 # is woken up by the postpone filter once first subrequest completes,
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97 # but this is suboptimal behaviour
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98
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99 my $s = http_get('/locked', start => 1);
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100 like(http_get('/ssi.html'), qr/end/, 'cache lock ssi');
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101 my ($start) = http_end($s) =~ /X-Msec: (\d+)/;
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102 cmp_ok(time() - $start, '<=', 3, 'parallel execution after lock timeout');
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103
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104 ###############################################################################