1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
| | #!/bin/sh
. ./test-lib.sh
t_plan 13 "backout of USR2 upgrade"
worker_wait_start () {
test xSTART = x"$(cat $fifo)"
unicorn_pid=$(cat $pid)
}
t_begin "setup and start" && {
unicorn_setup
rm -f $pid.oldbin
cat >> $unicorn_config <<EOF
after_fork do |server, worker|
# test script will block while reading from $fifo,
# so notify the script on the first worker we spawn
# by opening the FIFO
if worker.nr == 0
File.open("$fifo", "wb") { |fp| fp.syswrite "START" }
end
end
EOF
unicorn -D -c $unicorn_config pid.ru
worker_wait_start
orig_master_pid=$unicorn_pid
}
t_begin "read original worker pid" && {
orig_worker_pid=$(curl -sSf http://$listen/)
test -n "$orig_worker_pid" && kill -0 $orig_worker_pid
}
t_begin "upgrade to new master" && {
kill -USR2 $orig_master_pid
}
t_begin "kill old worker" && {
kill -WINCH $orig_master_pid
}
t_begin "wait for new worker to start" && {
worker_wait_start
test $unicorn_pid -ne $orig_master_pid
new_master_pid=$unicorn_pid
}
t_begin "old master pid is stashed in $pid.oldbin" && {
test -s "$pid.oldbin"
test $orig_master_pid -eq $(cat $pid.oldbin)
}
t_begin "ensure old worker is no longer running" && {
i=0
while kill -0 $orig_worker_pid 2>/dev/null
do
i=$(( $i + 1 ))
test $i -lt 600 || die "timed out"
sleep 1
done
}
t_begin "capture pid of new worker" && {
new_worker_pid=$(curl -sSf http://$listen/)
}
t_begin "reload old master process" && {
kill -HUP $orig_master_pid
worker_wait_start
}
t_begin "gracefully kill new master and ensure it dies" && {
kill -QUIT $new_master_pid
i=0
while kill -0 $new_worker_pid 2>/dev/null
do
i=$(( $i + 1 ))
test $i -lt 600 || die "timed out"
sleep 1
done
}
t_begin "ensure $pid.oldbin does not exist" && {
i=0
while test -s $pid.oldbin
do
i=$(( $i + 1 ))
test $i -lt 600 || die "timed out"
sleep 1
done
while ! test -s $pid
do
i=$(( $i + 1 ))
test $i -lt 600 || die "timed out"
sleep 1
done
}
t_begin "ensure $pid is correct" && {
cur_master_pid=$(cat $pid)
test $orig_master_pid -eq $cur_master_pid
}
t_begin "killing succeeds" && {
kill $orig_master_pid
}
dbgcat r_err
t_done
|