Mercurial > hg > nginx-tests
view limit_conn_complex.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 | 196d33c2bb45 |
children |
line wrap: on
line source
#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # limit_req based tests for limit_conn module with complex keys. ############################################################################### use warnings; use strict; use Test::More; use IO::Select; 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 limit_conn limit_req/) ->plan(4); $t->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% limit_req_zone $binary_remote_addr$arg_r zone=req:1m rate=1r/m; limit_req_zone $binary_remote_addr zone=re2:1m rate=1r/m; limit_conn_zone $binary_remote_addr$arg_c zone=conn:1m; server { listen 127.0.0.1:8080; server_name localhost; location / { limit_conn conn 1; } location /w { limit_conn conn 1; proxy_pass http://127.0.0.1:8080/req2; } location /req { limit_req zone=req burst=2; } location /req2 { limit_req zone=re2 burst=2; } } } EOF $t->write_file('req', ''); $t->run(); ############################################################################### my $s; # charge limit_req http_get('/req'); # limit_req tests $s = http_get('/req', start => 1); ok(!IO::Select->new($s)->can_read(1), 'limit_req same key'); like(http_get('/req?r=2'), qr/200 OK/, 'limit_req different key'); # limit_conn tests http_get('/req2'); $s = http_get('/w', start => 1); select undef, undef, undef, 0.2; like(http_get('/'), qr/^HTTP\/1.. 503 /, 'limit_conn same key'); unlike(http_get('/?c=2'), qr/^HTTP\/1.. 503 /, 'limit_conn different key'); ###############################################################################