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authorDenys Vlasenko <vda.linux@googlemail.com>2015-10-15 02:10:11 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2015-10-15 02:10:11 +0200
commit5251135bc184bdcb8cbcb964e8c44c6c301bffdc (patch)
tree01d8d066d38668731bc95bdc54e24180a3d1d327 /examples
parent4ad702c0a70628ce7574609087e50b0ce40455d6 (diff)
downloadbusybox-5251135bc184bdcb8cbcb964e8c44c6c301bffdc.tar.gz
better pinger service example
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'examples')
-rwxr-xr-xexamples/var_service/dhcp_if_pinger/run44
1 files changed, 34 insertions, 10 deletions
diff --git a/examples/var_service/dhcp_if_pinger/run b/examples/var_service/dhcp_if_pinger/run
index 20b2fc516..1868510d1 100755
--- a/examples/var_service/dhcp_if_pinger/run
+++ b/examples/var_service/dhcp_if_pinger/run
@@ -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"
-. "/var/service/dhcp_$if/dhcp_$if.out"
-test x"$router" != x"" || exec env - sleep "$delay"
+test -f "/var/service/dhcp_$if/dhcp_$if.out" || 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 "$delay"
+. "/var/service/dhcp_$if/dhcp_$if.out"
+test x"$router" != x"" || exec env - sleep "$ping_time"
-echo "`date '+%Y-%m-%d %H:%M:%S'` Restarting /var/service/dhcp_$if" >>"$0.log"
-sv t "/var/service/dhcp_$if"
+#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
-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"