summaryrefslogtreecommitdiffstats
path: root/qa/nightlies/cron_wrapper
blob: 29b4483e99c045019ccf6cb61c51e898421b8a74 (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
#!/usr/bin/env bash
# /nightlies/cron_wrapper.sh

# check for no argument case and stop
if [ -z $1 ]; then
  echo "need argument"
  exit 1
fi

# set permanent $LOG file var
LOG="/var/log/crontab-nightlies-log/crontab.log"
# set $LOG_LOCKED_ERR in case locking failed
LOG_LOCK_ERR="/var/log/crontab-nightlies-log/crontab_lock_problem.$$"

# temp files to store stdout and stderr
# named with the PID of this script in their name so they'll be unique
STDERR="/var/tmp/stderr.$$"
STDOUT="/var/tmp/stdout.$$"

# $STDOUT and $STDERR are removed when the script exits for any reason
trap  "rm -f $STDOUT $STDERR" 0

# run a command from this script's argument
# redirect stdout to $STDOUT file and redirect stderr to $STDERR file

DATE=$(date)
echo -n "$DATE: "  >> $STDOUT
echo "Running command: $@" >> $STDOUT
"$@" > $STDOUT 2> $STDERR

# get return code from the command run
code=$?

if [ $code != 0 ] ; then
        # echoing to stdout/stderr makes cron send email
        echo "stdout:"
        cat $STDOUT
        echo "stderr:"
        cat $STDERR
else
        # normal exit: just log stdout

	# lock $LOG with file descriptor 200
	exec 200>>$LOG
	# if $LOG is locked by other process - wait for 20 sec
	flock -w 20 200 || LOG=$LOG_LOCK_ERR
	echo "stdout:" >> $LOG
	cat $STDOUT >> $LOG
	echo "stderr:" >> $LOG
	cat $STDERR >> $LOG
	# unlock
	flock -u 200
fi