blob: 8bd615713dfaf24b7747df028bd6d9eac2d76d6b (
plain) (
blame)
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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
#!/bin/sh
# Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
# daemon that collects old log files.
# global settings:
DBGF=logs/vespa/debug.retention-enforcer
DBDIR=var/db/vespa/logfiledb
PIDF=$DBDIR/retention-enforcer.pid
RETAIN_DAYS=30
# this depends on components adding their log files
# to a "database" in DBDIR named "logfiles.TTTTT" where
# TTTTT is a timestamp in format (seconds/100000).
# The "database" holds lines with format "timestamp /path/to/logfile"
# where "timestamp" is just seconds since epoch.
log_msg() {
echo "$0 [$$]" "$@"
}
prereq_dir() {
if [ -d $1 ] && [ -w $1 ]; then
:
else
log_msg ERROR "missing directory '$1' in '`pwd`'" >&2
exit 1
fi
}
check_prereqs() {
prereq_dir var/db/vespa
prereq_dir logs/vespa
}
ensure_dir () {
if [ -d $1 ] && [ -w $1 ]; then
return 0
fi
log_msg INFO "Creating directory '$1' in '`pwd`'"
mkdir -p $1 || exit 1
}
prepare_stuff() {
check_prereqs
ensure_dir ${DBGF%/*}
exec >> $DBGF.log 2>&1
ensure_dir $DBDIR
}
bad_timestamp() {
now=$(date +%s)
if [ "$1" ] && [ "$1" -ge 1514764800 ] && [ "$1" -le $now ]; then
# sane timestamp:
return 1
fi
# bad timestamp:
return 0
}
mark_pid() {
echo $$ > $PIDF.$$.tmp
mv $PIDF.$$.tmp $PIDF || exit 1
}
check_pidfile() {
[ -f $PIDF ] || return 0
read pid < $PIDF
[ "$pid" = $$ ] && return 0
if [ "$pid" ] && [ $pid -gt $$ ]; then
sleep 30
read pid_again < $PIDF
if [ "$pid_again" != "$pid" ]; then return 1; fi
ps -p $pid >/dev/null 2>&1 || return 1
proc=$(ps -p $pid 2>&1)
case $proc in *retention*) ;; *) return 1;; esac
log_msg INFO "Yielding my place to pid '$pid'"
exit 1
fi
}
get_mod_time() {
stat -c %Y -- "$1"
}
maybe_collect() {
timestamp=$1
logfilename=$2
if bad_timestamp "$1"; then
log_msg WARNING "bad timestamp '$timestamp' for logfilename '$logfilename'"
return
fi
add=$((86400 * $RETAIN_DAYS))
lim1=$(($timestamp + $add))
mod_time=$(get_mod_time "$logfilename")
lim2=$(($mod_time + $add))
if [ $lim1 -lt $now ] && [ $lim2 -lt $now ]; then
log_msg INFO "Collect logfile '$logfilename' timestamped $timestamp modified $mod_time"
rm -f "$logfilename"
fi
}
process_file() {
dbfile="$1"
now=$(date +%s)
dbf_ts_prefix=${dbfile##*.}
dbf_ts_beg=${dbf_ts_prefix}00000
dbf_ts_end=${dbf_ts_prefix}99999
add=$((86400 * $RETAIN_DAYS))
earliest_expire=$((${dbf_ts_beg} + $add))
if [ $earliest_expire -gt $now ]; then
return 0
fi
found=0
while read timestamp logfilename; do
sleep 1
for fn in $logfilename $logfilename.*z*; do
if [ -f "$fn" ]; then
found=1
maybe_collect "$timestamp" "$fn"
fi
done
done < $dbfile
if [ $found = 0 ]; then
maybe_collect "${dbf_ts_end}" "$dbfile"
fi
}
process_all() {
for dbf in $DBDIR/logfiles.* ; do
[ -f "$dbf" ] || continue
process_file "$dbf"
sleep 1
done
}
mainloop() {
while true; do
check_pidfile
mark_pid
process_all
sleep 3600
done
}
# MAIN:
prepare_stuff
sleep 600
mainloop
exit 0
|
