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annotate stream_unix.t @ 1752:ba6e24e38f03

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Tests: improved stop_daemons() to send signal again. As was observed, it's possible that a signal to complete a uwsgi daemon can be ignored while it is starting up, which results in tests hang due to eternal waiting on child processes termination. Notably, it is seen when running tests with a high number of prove jobs on a low-profile VM against nginx with broken modules and/or configuration. To reproduce: $ TEST_NGINX_GLOBALS=ERROR prove -j16 uwsgi*.t Inspecting uwsgi under ktrace on FreeBSD confirms that a SIGTERM signal is ignored at the very beginning of uwsgi startup. It is then replaced with a default action after listen(), thus waiting until uwsgi is ready to accept new TCP connections doesn't completely solve the hang window. The fix is to retry sending a signal some time after waitpid(WNOHANG) continuously demonstrated no progress with reaping a signaled process. It is modelled after f13ead27f89c that improved stop() for nginx.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 29 Dec 2021 22:29:23 +0300
parents f3ba4c74de31
children
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1 #!/usr/bin/perl
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2
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3 # (C) Andrey Zelenkov
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4 # (C) Nginx, Inc.
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5
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6 # Simple tests for stream with unix socket.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 BEGIN { use FindBin; chdir($FindBin::Bin); }
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16
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17 use lib 'lib';
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18 use Test::Nginx;
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19 use Test::Nginx::Stream qw/ stream /;
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20
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21 ###############################################################################
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22
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23 select STDERR; $| = 1;
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24 select STDOUT; $| = 1;
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25
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26 eval { require IO::Socket::UNIX; };
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27 plan(skip_all => 'IO::Socket::UNIX not installed') if $@;
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28
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29 my $t = Test::Nginx->new()->has(qw/stream unix/)->plan(2);
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30
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31 $t->write_file_expand('nginx.conf', <<'EOF');
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32
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33 %%TEST_GLOBALS%%
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34
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35 daemon off;
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36
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37 events {
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38 }
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39
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40 stream {
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41 %%TEST_GLOBALS_STREAM%%
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42
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43 upstream u {
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44 server unix:%%TESTDIR%%/unix.sock;
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45 }
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46
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47 server {
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48 listen 127.0.0.1:8080;
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49 proxy_pass unix:%%TESTDIR%%/unix.sock;
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50 }
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51
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52 server {
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53 listen 127.0.0.1:8081;
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54 proxy_pass u;
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55 }
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56 }
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57
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58 EOF
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59
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60 my $path = $t->testdir() . '/unix.sock';
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61
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62 $t->run_daemon(\&stream_daemon, $path);
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63 $t->run();
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64
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65 # wait for unix socket to appear
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66
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67 for (1 .. 50) {
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68 last if -S $path;
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69 select undef, undef, undef, 0.1;
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70 }
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71
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72 ###############################################################################
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73
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74 my $str = 'SEE-THIS';
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75
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76 is(stream('127.0.0.1:' . port(8080))->io($str), $str, 'proxy');
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77 is(stream('127.0.0.1:' . port(8081))->io($str), $str, 'upstream');
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78
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79 ###############################################################################
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80
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81 sub stream_daemon {
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82 my $server = IO::Socket::UNIX->new(
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83 Proto => 'tcp',
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84 Local => shift,
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85 Listen => 5,
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86 Reuse => 1
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87 )
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88 or die "Can't create listening socket: $!\n";
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89
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90 local $SIG{PIPE} = 'IGNORE';
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91
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92 while (my $client = $server->accept()) {
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93 $client->autoflush(1);
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94
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95 log2c("(new connection $client)");
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96
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97 $client->sysread(my $buffer, 65536) or next;
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98
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99 log2i("$client $buffer");
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100
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101 log2o("$client $buffer");
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102
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103 $client->syswrite($buffer);
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104
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105 close $client;
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106 }
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107 }
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108
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109 sub log2i { Test::Nginx::log_core('|| <<', @_); }
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110 sub log2o { Test::Nginx::log_core('|| >>', @_); }
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111 sub log2c { Test::Nginx::log_core('||', @_); }
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112
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113 ###############################################################################