Mercurial > hg > nginx-tests
view upstream_hash.t @ 1236:93f749c1d5c5
Tests: fixed parallel tests execution with UDP.
Previously, when checking ports availability, a UDP socket was always created
first, then a TCP socket was created. On success, one of UDP and TCP sockets
was closed (depending on the "udp" option) and the second one was used to busy
this port in other scripts. This lead to the following problem: in an attempt
to reopen a UDP socket used in a given testing script it could be stolen by
another script as part of checking ports availability.
To solve this problem, UDP and TCP ports were split into two non-overlapping
ranges: TCP ports are only used in the range 8000-8499, and UDP ports - in
the range 8500-8999. In addition, the order of creating sockets in UDP tests
has been reversed: now a TCP socket used as a lock precedes a UDP socket.
author | Andrey Zelenkov <zelenkov@nginx.com> |
---|---|
date | Thu, 26 Oct 2017 18:00:21 +0300 |
parents | 38ed3dda3279 |
children | 766bcbb632ee |
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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(13); $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 $t->run(); ############################################################################### my ($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'); 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'); TODO: { local $TODO = 'not yet' unless $t->has_version('1.11.5'); like(http_get('/cbusy'), qr/X-IP: 127.0.0.1:$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}++; } } return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports; } ###############################################################################