* [PATCH] test: allow setting TAIL env to watch error logs
@ 2017-04-27 0:54 Eric Wong
0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2017-04-27 0:54 UTC (permalink / raw)
To: yahns-public
Setting TAIL=1 will automatically use the portable "tail -f".
This can be helpful in diagnosing failures during development.
GNU tail users may set TAIL="tail -F" (or "gtail -F")
to use the "-F" ("--follow=name") option to track changes
across SIGUSR1 log reopening testing.
---
test/server_helper.rb | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/test/server_helper.rb b/test/server_helper.rb
index cb11e79..9ef15c6 100644
--- a/test/server_helper.rb
+++ b/test/server_helper.rb
@@ -65,12 +65,29 @@ def server_helper_teardown
@srv.close if defined?(@srv) && !@srv.closed?
@ru.close! if defined?(@ru) && @ru
check_err if defined?(@err)
+ Timeout.timeout(30) do
+ Process.kill(:TERM, @tail_pid)
+ Process.waitpid(@tail_pid)
+ end if @tail_pid
end
def server_helper_setup
@srv = TCPServer.new(ENV["TEST_HOST"] || "127.0.0.1", 0)
@err = tmpfile(%w(srv .err))
@ru = nil
+ @tail_pid = nil
+ case tail = ENV['TAIL']
+ when '1'
+ tail = 'tail -f' # POSIX
+ when nil, '0'
+ tail = nil
+ # else : allow users to specify 'tail -F' or 'gtail -F' for GNU
+ end
+ if tail
+ cmd = tail.split(/\s+/)
+ cmd << @err.path
+ @tail_pid = spawn(*cmd)
+ end
end
def mkserver(cfg, srv = @srv)
--
EW
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2017-04-27 0:54 [PATCH] test: allow setting TAIL env to watch error logs Eric Wong
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