blob: ff1f70e94f5a98573da04c580f16222b847d6711 (
plain)
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
|
#!/usr/bin/env bash
set -euo pipefail
RUN_BASE="${STATE_DIR:-${XDG_RUNTIME_DIR:-/tmp}/rclone-test-server}"
: "${NAME:=$(basename "$0")}"
RUN_ROOT="${RUN_BASE}/${NAME}"
RUN_STATE="${RUN_ROOT}/state"
RUN_LOCK_FILE="${RUN_ROOT}/lock"
RUN_REF_COUNT="${RUN_STATE}/refcount"
RUN_OUTPUT="${RUN_STATE}/env"
mkdir -p "${RUN_STATE}"
[[ -f "${RUN_REF_COUNT}" ]] || echo 0 >"${RUN_REF_COUNT}"
[[ -f "${RUN_OUTPUT}" ]] || : >"${RUN_OUTPUT}"
: > "${RUN_LOCK_FILE}" # ensure file exists
# status helper that won't trip set -e
_is_running() { set +e; status >/dev/null 2>&1; local rc=$?; set -e; return $rc; }
_acquire_lock() {
# open fd 9 on lock file and take exclusive lock
exec 9>"${RUN_LOCK_FILE}"
flock -x 9
}
_release_lock() {
flock -u 9
exec 9>&-
}
case "${1:-}" in
start)
_acquire_lock
trap '_release_lock' EXIT
rc=$(cat "${RUN_REF_COUNT}" 2>/dev/null || echo 0)
if (( rc == 0 )); then
# First client: ensure a clean instance, then start and cache env
if _is_running; then
stop || true
fi
if ! out="$(start)"; then
echo "failed to start" >&2
exit 1
fi
printf "%s\n" "$out" > "${RUN_OUTPUT}"
else
# Already owned: make sure it’s still up; if not, restart and refresh env
if ! _is_running; then
if ! out="$(start)"; then
echo "failed to restart" >&2
exit 1
fi
printf "%s\n" "$out" > "${RUN_OUTPUT}"
fi
fi
rc=$((rc+1)); echo "${rc}" > "${RUN_REF_COUNT}"
cat "${RUN_OUTPUT}"
trap - EXIT
_release_lock
;;
stop)
_acquire_lock
trap '_release_lock' EXIT
rc=$(cat "${RUN_REF_COUNT}" 2>/dev/null || echo 0)
if (( rc > 0 )); then rc=$((rc-1)); fi
echo "${rc}" > "${RUN_REF_COUNT}"
if (( rc == 0 )) && _is_running; then
stop || true
fi
trap - EXIT
_release_lock
;;
reset)
_acquire_lock
trap '_release_lock' EXIT
stop || true
rm -rf "${RUN_BASE}"
trap - EXIT
_release_lock
;;
status)
# passthrough; do NOT take the lock
status
;;
*)
echo "usage: $0 {start|stop|reset|status}" >&2
exit 2
;;
esac
|
