Mercurial > hg > nginx-tests
view upstream_hash.t @ 1990:85d88cd5091c
Tests: SSI include stub tests.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Thu, 04 Jul 2024 17:42:55 +0300 |
parents | 5ac6efbe5552 |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Tests for upstream hash balancer module. ############################################################################### use warnings; use strict; use Test::More; BEGIN { use FindBin; chdir($FindBin::Bin); } use lib 'lib'; use Test::Nginx; ############################################################################### select STDERR; $| = 1; select STDOUT; $| = 1; my $t = Test::Nginx->new()->has(qw/http proxy rewrite upstream_hash/)->plan(15); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% upstream u { hash $arg_a; server 127.0.0.1:8081; server 127.0.0.1:8082; server 127.0.0.1:8083; } upstream u2 { hash $arg_a; server 127.0.0.1:8081; server 127.0.0.1:8083; } upstream cw { hash $arg_a consistent; server 127.0.0.1:8081; server 127.0.0.1:8082; server 127.0.0.1:8083 weight=10; } upstream cw2 { hash $arg_a consistent; server 127.0.0.1:8081; server 127.0.0.1:8083 weight=10; } upstream c { hash $arg_a consistent; server 127.0.0.1:8081; server 127.0.0.1:8082; server 127.0.0.1:8083; } upstream c2 { hash $arg_a consistent; server 127.0.0.1:8081; server 127.0.0.1:8083; } upstream bad { hash $arg_a; server 127.0.0.1:8081; server 127.0.0.1:8084; } upstream cbad { hash $arg_a consistent; server 127.0.0.1:8081; server 127.0.0.1:8084; } server { listen 127.0.0.1:8080; server_name localhost; location / { proxy_pass http://u; } location /2 { proxy_pass http://u2; } location /cw { proxy_pass http://cw; } location /cw2 { proxy_pass http://cw2; } location /c { proxy_pass http://c; } location /c2 { proxy_pass http://c2; } location /bad { proxy_pass http://bad; } location /cbad { proxy_pass http://cbad; } location /busy { proxy_pass http://bad/busy; add_header X-IP $upstream_addr always; } location /cbusy { proxy_pass http://cbad/busy; add_header X-IP $upstream_addr always; } location /pnu { proxy_pass http://u/; proxy_next_upstream http_502; } } server { listen 127.0.0.1:8081; listen 127.0.0.1:8082; listen 127.0.0.1:8083; server_name localhost; add_header X-Port $server_port; location / { return 204; } location /502 { if ($server_port = %%PORT_8083%%) { return 502; } return 204; } location /busy { return 444; } } server { listen 127.0.0.1:8084; server_name localhost; return 444; } } EOF $t->run(); ############################################################################### my @ports = my ($p1, $p2, $p3) = (port(8081), port(8082), port(8083)); # Only requests for absent peer are moved to other peers if hash is consistent. # Check this by comparing two upstreams with different number of peers. ok(!cmp_peers([iter('/', 20)], [iter('/2', 20)], $p2), 'inconsistent'); ok(cmp_peers([iter('/c', 20)], [iter('/c2', 20)], $p2), 'consistent'); ok(cmp_peers([iter('/cw', 20)], [iter('/cw2', 20)], $p2), 'consistent weight'); like(many('/?a=1', 10), qr/($p1|$p2|$p3): 10/, 'stable hash'); like(many('/c?a=1', 10), qr/($p1|$p2|$p3): 10/, 'stable hash - consistent'); # fallback to round-robin like(many('/?a=', 6), qr/$p1: 2, $p2: 2, $p3: 2/, 'empty key'); like(many('/c?a=', 6), qr/$p1: 2, $p2: 2, $p3: 2/, 'empty key - consistent'); my @res = iter('/', 10); is(@res, 10, 'all hashed peers'); @res = grep { $_ != $p3 } @res; my @res2 = iter('/502', 10); is_deeply(\@res, \@res2, 'no proxy_next_upstream'); isnt(@res2, 10, 'no proxy_next_upstream peers'); is(iter('/pnu/502', 10), 10, 'proxy_next_upstream peers'); @res = grep { $_ == $p1 } iter('/bad', 20); is(@res, 20, 'all hashed peers - bad'); @res = grep { $_ == $p1 } iter('/cbad', 20); is(@res, 20, 'all hashed peers - bad consistent'); like(http_get('/busy'), qr/X-IP: 127.0.0.1:$p1, bad/, 'upstream name - busy'); like(http_get('/cbusy'), qr/X-IP: 127.0.0.1:$p1, cbad/, 'upstream name - busy consistent'); ############################################################################### # Returns true if two arrays follow consistency, i.e., they may only differ # by @args present in $p, but absent in $p2, for the same indices. sub cmp_peers { my ($p, $p2, @args) = @_; for my $i (0 .. $#$p) { next if @{$p}[$i] == @{$p2}[$i]; next if (grep $_ == @{$p}[$i], @args); return 0; } return 1; } # series of requests, each with unique hash key sub iter { my ($uri, $count) = @_; my @res; for my $i (1 .. $count) { if (http_get("$uri/?a=$i") =~ /X-Port: (\d+)/) { push @res, $1 if defined $1; } } return @res; } sub many { my ($uri, $count) = @_; my %ports; for (1 .. $count) { if (http_get($uri) =~ /X-Port: (\d+)/) { $ports{$1} = 0 unless defined $ports{$1}; $ports{$1}++; } } my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports; return join ', ', map { $_ . ": " . $ports{$_} } @keys; } ###############################################################################