From ab83a04551cd333870d0ee6679e5aa6f4342cfb3 Mon Sep 17 00:00:00 2001 From: Bill Erickson Date: Wed, 31 Jul 2013 09:34:19 -0400 Subject: [PATCH] LP1204123 osrf_ctl.sh supports sending signals Using the following new options to osrf_ctl.sh, the script can now send signals to any/all OpenSRF Listener processes: -a signal / signal_all -k [value passed to 'kill -s'] -s With an action of 'signal' and service provided by -s, the specified signal is sent only to the listener process of the service. With an action of 'signal_all', the specified signal is sent to all listener prcesses. Signed-off-by: Bill Erickson Signed-off-by: Jason Stephenson --- bin/osrf_ctl.sh.in | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 73 insertions(+), 2 deletions(-) diff --git a/bin/osrf_ctl.sh.in b/bin/osrf_ctl.sh.in index be80541..18838cd 100755 --- a/bin/osrf_ctl.sh.in +++ b/bin/osrf_ctl.sh.in @@ -20,6 +20,8 @@ exec_prefix=@exec_prefix@ OPT_ACTION="" OPT_CONFIG="" OPT_PID_DIR="" +OPT_SIGNAL="" +OPT_SERVICE="" OSRF_HOSTNAME="" # --------------------------------------------------------------------------- @@ -32,14 +34,18 @@ usage() { cat << EOF usage: $0 [OPTION]... -c -a +usage: $0 -a signal -k -s Mandatory parameters: -a action to perform -Optional parameters:"; +Optional parameters: -c full path to C configuration file (opensrf_core.xml) -d store PID files in this directory -l accept 'localhost' as the fully-qualified domain name + -k signal to send to process. Argument is passed directly to 'kill'. + -s service name. Used in conjunction with -k. + Actions include: start_router @@ -62,10 +68,15 @@ Actions include: restart_all smart_clear - Clear all PID files that don't refer to a process clear_pid - Clear all PID files + signal - send signal specified by -k to service specified by -s + signal_all - send signal specified by -k to all services + Examples: $0 -a restart_all $0 -l -c opensrf_core.xml -a restart_all + $0 -a signal -k opensrf.settings -s USR1 + $0 -a signal_all -s HUP EOF } @@ -73,11 +84,13 @@ EOF # --------------------------------------------------------------------------- # Load the command line options and set the global vars # --------------------------------------------------------------------------- -while getopts "a:d:c:lh" flag; do +while getopts "a:d:c:s:k:lh" flag; do case $flag in "a") OPT_ACTION="$OPTARG";; "c") OPT_CONFIG="$OPTARG";; "d") OPT_PID_DIR="$OPTARG";; + "s") OPT_SERVICE="$OPTARG";; + "k") OPT_SIGNAL="$OPTARG";; "l") export OSRF_HOSTNAME="localhost";; "h"|*) usage;; esac; @@ -99,6 +112,28 @@ PID_OSRF_PERL="$OPT_PID_DIR/osrf_perl.pid"; PID_OSRF_PYTHON="$OPT_PID_DIR/osrf_python.pid"; PID_OSRF_C="$OPT_PID_DIR/osrf_c.pid"; +# apply some sanity checks to the signal handling arguments +if [ ${OPT_ACTION%_all} = "signal" ]; then + warning=""; + + [ -z "$OPT_SIGNAL" ] && \ + warning="-a $OPT_ACTION requires a signal specified by -k"; + + [ $OPT_ACTION = "signal" -a -z "$OPT_SERVICE" ] && \ + warning="$warning\n-a $OPT_ACTION requires a service specified by -s"; + + [ $OPT_ACTION = "signal_all" -a -n "$OPT_SERVICE" ] && \ + warning="$warning\n-s $OPT_SERVICE cannot be used together with $OPT_ACTION"; + + if [ -n "$warning" ]; then + usage; + echo "------------" + echo -e $warning; + exit; + fi; + + [ $OPT_ACTION = "signal_all" ] && OPT_SERVICE="*"; +fi; # --------------------------------------------------------------------------- # Utility code for checking the PID files @@ -273,6 +308,40 @@ smart_clear() { return 0; } +# send signal $OPT_SIGNAL to the Listener for service $OPT_SERVICE +# if $OPT_SERVICE = "*", signal all OpenSRF Listener services +send_signal() { + sig=$OPT_SIGNAL; + service=$OPT_SERVICE; + + # openrsf C services do not write per-process PID files, + # so the simplest approach is to locate all listeners via ps/grep + + found=0; + for svc in $(ps ax | grep "OpenSRF Listener" | grep -v grep | \ + perl -e 'while(<>){s/.*\[(.*)\].*/$1/; print}' | sort | uniq); do + + if [ "$service" = "*" -o "$service" = "$svc" ]; then + + # grab the listener PIDs + for pid in $(ps ax | grep "OpenSRF Listener \[$svc\]" | \ + grep -v grep | cut -d' ' -f1); do + found=1; + echo "Sending signal '$sig' to $pid : $svc"; + kill -s $sig $pid; + done; + fi; + done; + + if [ $found -eq 0 ]; then + if [ "$service" = "*" ]; then + echo "I have no services to signal!" + else + echo "No PID found for $service!" + fi; + fi; +} + # --------------------------------------------------------------------------- # Do the requested action # --------------------------------------------------------------------------- @@ -297,6 +366,8 @@ case $OPT_ACTION in "restart_all") stop_python; stop_c; stop_perl; stop_router; start_router; start_perl; start_c; start_python;; "clear_pid") clear_pid;; "smart_clear") smart_clear;; + "signal") send_signal;; + "signal_all") send_signal;; *) usage;; esac; -- 2.11.0