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better pinger service example

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2015-10-15 02:10:11 +02:00
parent 4ad702c0a7
commit 5251135bc1
1 changed files with 34 additions and 10 deletions
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44
examples/var_service/dhcp_if_pinger/run
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@ -1,23 +1,47 @@
#!/bin/sh
delay=67
# How often to test, seconds
ping_time=67
# "One ping, must have reply in 1 sec"
ping_opts="-c1 -W1 -w1"
# If ping failed, how soon to retry
retry_time=5
# Reinit after this many consecutive ping error
max_fail=5
# Interface whose DHCP data to use
if=${PWD##*/dhcp_}
if=${if%%_pinger}
msg() {
echo "`date '+%Y-%m-%d %H:%M:%S'` $*" >>"$0.log"
}
if test -f "$0.log"; then
tail -999 "$0.log" >"$0.log.new"
mv "$0.log.new" "$0.log"
fi
test -f "/var/service/dhcp_$if/dhcp_$if.out" || exec env - sleep "$delay"
test -f "/var/service/dhcp_$if/dhcp_$if.out" || exec env - sleep "$ping_time"
. "/var/service/dhcp_$if/dhcp_$if.out"
test x"$router" != x"" || exec env - sleep "$delay"
test x"$router" != x"" || exec env - sleep "$ping_time"
#echo "`date '+%Y-%m-%d %H:%M:%S'` Testing ping -c3 $router" >>"$0.log"
ping -c3 "$router" && exec env - sleep "$delay"
#msg "Pinging $router"
failcnt=0
while true; do
ping $ping_opts "$router" && exec env - sleep "$ping_time"
: $((failcnt++))
msg "Failed to ping $router, fail count:$failcnt"
test $failcnt -ge $max_fail && break
env - sleep "$retry_time"
done
echo "`date '+%Y-%m-%d %H:%M:%S'` Restarting /var/service/dhcp_$if" >>"$0.log"
sv t "/var/service/dhcp_$if"
exec env - sleep "$delay"
test -d "/var/service/dhcp_$if" && {
msg "Restarting /var/service/dhcp_$if"
sv t "/var/service/dhcp_$if"
}
test -d "/var/service/supplicant_$if" && {
msg "Restarting /var/service/supplicant_$if"
sv t "/var/service/supplicant_$if"
}
exec env - sleep "$ping_time"