Mercurial > hg > nginx-tests
view stub_status.t @ 1752:ba6e24e38f03
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 | 882267679006 |
children | c544b7120a6d |
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#!/usr/bin/perl # (C) Andrey Zelenkov # (C) Nginx, Inc. # Tests for stub status 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 stub_status/)->plan(34); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% server { listen 127.0.0.1:8080; server_name localhost; add_header X-Active $connections_active; add_header X-Reading $connections_reading; add_header X-Writing $connections_writing; add_header X-Waiting $connections_waiting; location / { } location /rate { limit_rate 15; } location /stub { stub_status; } } } EOF $t->write_file('index.html', ''); $t->run(); ############################################################################### my %status = status('/stub'); like(http_get('/stub'), qr/200 OK/, 'get request'); is($status{'active'}, 1, 'open connection'); is($status{'requests'}, 1, 'first request'); is($status{'accepts'}, 1, 'first request accepted'); is($status{'handled'}, 1, 'first request handled'); is($status{'writing'}, 1, 'first response'); is($status{'reading'}, 0, 'not reading'); # pipelined requests http(<<EOF); GET / HTTP/1.1 Host: localhost GET / HTTP/1.1 Host: localhost Connection: close EOF %status = status('/stub'); is($status{'requests'}, 5, 'requests increased by 2'); is($status{'accepts'}, 4, 'accepts increased by 1'); # states my $s = http('', start => 1); %status = status('/stub'); is($status{'active'}, 2, 'active'); is($status{'waiting'}, 1, 'waiting state'); is($status{'reading'}, 0, 'waiting state - not reading'); is($status{'writing'}, 1, 'waiting state - not writing'); http(<<EOF, start => 1, socket => $s, sleep => 0.2); GET /rate HTTP/1.0 EOF %status = status('/stub'); is($status{'waiting'}, 0, 'reading state - not waiting'); is($status{'reading'}, 1, 'reading state'); is($status{'writing'}, 1, 'reading state - not writing'); http(<<EOF, start => 1, socket => $s, sleep => 0.2); Host: localhost EOF %status = status('/stub'); is($status{'waiting'}, 0, 'writing state - not waiting'); is($status{'reading'}, 0, 'writing state - not reading'); is($status{'writing'}, 2, 'writing state'); $s->close(); # head and post requests like(http_head('/stub'), qr/200 OK/, 'head request'); like(http_post('/stub'), qr/405 Not Allowed/, 'post request'); # embedded variables in headers my $r = http_get('/stub'); like($r, qr/X-Active: 1/, 'get - var active'); like($r, qr/X-Reading: 0/, 'get - var reading'); like($r, qr/X-Writing: 1/, 'get - var writing'); like($r, qr/X-Waiting: 0/, 'get - var waiting'); $r = http_head('/stub'); like($r, qr/X-Active: 1/, 'head - var active'); like($r, qr/X-Reading: 0/, 'head - var reading'); like($r, qr/X-Writing: 1/, 'head - var writing'); like($r, qr/X-Waiting: 0/, 'head - var waiting'); is(get_body($r), '', 'head - empty body'); $r = http_get('/'); like($r, qr/X-Active: 1/, 'no stub - var active'); like($r, qr/X-Reading: 0/, 'no stub - var reading'); like($r, qr/X-Writing: 1/, 'no stub - var writing'); like($r, qr/X-Waiting: 0/, 'no stub - var waiting'); ############################################################################### sub get_body { my ($r) = @_; $r =~ /.*?\x0d\x0a?\x0d\x0a?(.*)/ms; return $1; } sub http_post { my ($url) = @_; return http(<<EOF); POST $url HTTP/1.0 Host: localhost EOF } sub status { my ($url) = @_; my $r = http_get($url); $r =~ / Active\ connections:\ +(\d+) \s+server\ accepts\ handled\ requests \s+(\d+)\ +(\d+)\ +(\d+) \s+Reading:\ +(\d+) \s+Writing:\ +(\d+) \s+Waiting:\ +(\d+) /sx; return ('active' => $1, 'accepts' => $2, 'handled' => $3, 'requests' => $4, 'reading' => $5, 'writing' => $6, 'waiting' => $7, ); } ###############################################################################