Mercurial > hg > nginx-tests
view js_body_filter.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 | 759efa4abc76 |
children |
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#!/usr/bin/perl # (C) Dmitry Volyntsev # (C) Nginx, Inc. # Tests for http njs module, body filter. ############################################################################### 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/) ->write_file_expand('nginx.conf', <<'EOF'); %%TEST_GLOBALS%% daemon off; events { } http { %%TEST_GLOBALS_HTTP%% js_import test.js; server { listen 127.0.0.1:8080; server_name localhost; location /njs { js_content test.njs; } location /append { js_body_filter test.append; proxy_pass http://127.0.0.1:8081/source; } location /buffer_type { js_body_filter test.buffer_type buffer_type=buffer; proxy_pass http://127.0.0.1:8081/source; } location /forward { js_body_filter test.forward buffer_type=string; proxy_pass http://127.0.0.1:8081/source; } location /filter { proxy_buffering off; js_body_filter test.filter; proxy_pass http://127.0.0.1:8081/source; } location /prepend { js_body_filter test.prepend; proxy_pass http://127.0.0.1:8081/source; } } server { listen 127.0.0.1:8081; server_name localhost; location /source { postpone_output 1; js_content test.source; } } } EOF $t->write_file('test.js', <<EOF); function test_njs(r) { r.return(200, njs.version); } function append(r, data, flags) { r.sendBuffer(data, {last:false}); if (flags.last) { r.sendBuffer("XXX", flags); } } var collect = Buffer.from([]); function buffer_type(r, data, flags) { collect = Buffer.concat([collect, data]); if (flags.last) { r.sendBuffer(collect, flags); } } function chain(chunks, i) { if (i < chunks.length) { chunks.r.send(chunks[i++]); setTimeout(chunks.chain, chunks.delay, chunks, i); } else { chunks.r.finish(); } } function source(r) { var chunks = ['AAA', 'BB', 'C', 'DDDD']; chunks.delay = 5; chunks.r = r; chunks.chain = chain; r.status = 200; r.sendHeader(); chain(chunks, 0); } function filter(r, data, flags) { if (flags.last || data.length >= Number(r.args.len)) { r.sendBuffer(`\${data}|`, flags); if (r.args.dup && !flags.last) { r.sendBuffer(data, flags); } } } function forward(r, data, flags) { r.sendBuffer(data, flags); } function prepend(r, data, flags) { r.sendBuffer("XXX"); r.sendBuffer(data, flags); r.done(); } export default {njs: test_njs, append, buffer_type, filter, forward, prepend, source}; EOF $t->try_run('no njs body filter')->plan(6); ############################################################################### like(http_get('/append'), qr/AAABBCDDDDXXX/, 'append'); like(http_get('/buffer_type'), qr/AAABBCDDDD/, 'buffer type'); like(http_get('/forward'), qr/AAABBCDDDD/, 'forward'); like(http_get('/filter?len=3'), qr/AAA|DDDD|/, 'filter 3'); like(http_get('/filter?len=2&dup=1'), qr/AAA|AAABB|BBDDDD|DDDD/, 'filter 2 dup'); like(http_get('/prepend'), qr/XXXAAABBCDDDD/, 'prepend'); ###############################################################################