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annotate proxy_next_upstream.t @ 1427:eb1d883305ea

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Tests: avoid edge cases in upstream random two test. Unavailable servers contribute to the number of attempts, if selected, before the balancer would fall back to the default round-robin method. This means that it's quite possible to get server with more connections. To facilitate with selecting two alive servers, down server was removed from the upstream configuration at the cost of slightly worse coverage.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 10 Jan 2019 17:42:34 +0300
parents 882267679006
children da1325cb1c39
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 module, proxy_next_upstream directive.
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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;
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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 my $t = Test::Nginx->new()->has(qw/http proxy rewrite/)->plan(7);
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25
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26 $t->write_file_expand('nginx.conf', <<'EOF');
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27
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28 %%TEST_GLOBALS%%
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29
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30 daemon off;
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31
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32 events {
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33 }
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34
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35 http {
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36 %%TEST_GLOBALS_HTTP%%
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37
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38 upstream u {
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39 server 127.0.0.1:8081;
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40 server 127.0.0.1:8082;
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41 }
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42
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43 upstream u2 {
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44 server 127.0.0.1:8081;
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45 server 127.0.0.1:8082;
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46 }
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47
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48 server {
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49 listen 127.0.0.1:8080;
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50 server_name localhost;
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51
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52 location / {
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53 proxy_pass http://u;
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54 proxy_next_upstream http_500 http_404;
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55 }
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56
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57 location /all/ {
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58 proxy_pass http://u2;
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59 proxy_next_upstream http_500 http_404;
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60 error_page 404 /all/404;
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61 proxy_intercept_errors on;
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62 }
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63
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64 location /all/404 {
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65 return 200 "$upstream_addr\n";
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66 }
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67 }
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68
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69 server {
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70 listen 127.0.0.1:8081;
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71 server_name localhost;
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72
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73 location / {
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74 return 404;
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75 }
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76 location /ok {
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77 return 200 "AND-THIS\n";
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78 }
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79 location /500 {
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80 return 500;
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81 }
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82
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83 location /all/ {
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84 return 404;
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85 }
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86 }
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87
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88 server {
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89 listen 127.0.0.1:8082;
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90 server_name localhost;
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91
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92 location / {
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93 return 200 "TEST-OK-IF-YOU-SEE-THIS\n";
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94 }
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95
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96 location /all/ {
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97 return 404;
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98 }
288
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99 }
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100 }
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101
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102 EOF
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103
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104 $t->run();
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105
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106 ###############################################################################
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107
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108 my ($p1, $p2) = (port(8081), port(8082));
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109
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110 # check if both request fallback to a backend
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111 # which returns valid response
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112
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113 like(http_get('/'), qr/SEE-THIS/, 'proxy request');
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114 like(http_get('/'), qr/SEE-THIS/, 'second request');
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115
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116 # make sure backend isn't switched off after
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117 # proxy_next_upstream http_404
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118
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119 like(http_get('/ok') . http_get('/ok'), qr/AND-THIS/, 'not down');
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120
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121 # next upstream on http_500
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122
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123 like(http_get('/500'), qr/SEE-THIS/, 'request 500');
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124 like(http_get('/500'), qr/SEE-THIS/, 'request 500 second');
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125
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126 # make sure backend switched off with http_500
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127
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128 unlike(http_get('/ok') . http_get('/ok'), qr/AND-THIS/, 'down after 500');
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129
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130 # make sure all backends are tried once
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131
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132 like(http_get('/all/rr'),
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133 qr/^127.0.0.1:($p1, 127.0.0.1:$p2|$p2, 127.0.0.1:$p1)$/mi,
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134 'all tried once');
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135
288
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136 ###############################################################################