Mercurial > hg > nginx-tests
view uwsgi_body.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 | b27bcded6449 |
children |
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#!/usr/bin/perl # (C) Sergey Kandaurov # (C) Nginx, Inc. # Test for uwsgi backend with request body. ############################################################################### 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 rewrite uwsgi/) ->has_daemon('uwsgi')->plan(5) ->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; set $variable $content_length; location / { uwsgi_pass 127.0.0.1:8081; uwsgi_param CONTENT_LENGTH $content_length if_not_empty; } } } EOF $t->write_file('uwsgi_test_app.py', <<END); def application(env, start_response): start_response('200 OK', [('Content-Type','text/plain')]) if "CONTENT_LENGTH" not in env: return b"SEE-THIS" cl = int(env.get('CONTENT_LENGTH')) rb = env.get('wsgi.input').read(cl) return b"cl=%d '%s'" % (cl, rb) END my $uwsgihelp = `uwsgi -h`; my @uwsgiopts = (); if ($uwsgihelp !~ /--wsgi-file/) { # uwsgi has no python support, maybe plugin load is necessary push @uwsgiopts, '--plugin', 'python'; push @uwsgiopts, '--plugin', 'python3'; } open OLDERR, ">&", \*STDERR; close STDERR; $t->run_daemon('uwsgi', '--socket', '127.0.0.1:' . port(8081), @uwsgiopts, '--wsgi-file', $t->testdir() . '/uwsgi_test_app.py', '--logto', $t->testdir() . '/uwsgi_log'); open STDERR, ">&", \*OLDERR; $t->run(); $t->waitforsocket('127.0.0.1:' . port(8081)) or die "Can't start uwsgi"; ############################################################################### like(http_get('/'), qr/SEE-THIS/, 'uwsgi no body'); like(http_get_length('/', 'foobar'), qr/cl=6 'foobar'/, 'uwsgi body'); like(http_get_length('/', ''), qr/cl=0 ''/, 'uwsgi empty body'); # rewrite set is used to cache $content_length early like(http_get_chunked('/', 'foobar'), qr/cl=6 'foobar'/, 'uwsgi chunked'); like(http_get_chunked('/', ''), qr/cl=0 ''/, 'uwsgi empty chunked'); ############################################################################### sub http_get_length { my ($url, $body) = @_; my $length = length $body; return http(<<EOF); GET $url HTTP/1.1 Host: localhost Connection: close Content-Length: $length $body EOF } sub http_get_chunked { my ($url, $body) = @_; my $length = sprintf("%x", length $body); return http(<<EOF); GET $url HTTP/1.1 Host: localhost Connection: close Transfer-Encoding: chunked $length $body 0 EOF } ###############################################################################