Initial version of the cron notification keeper script.

diff --git a/org.glite.lb.utils/src/notif-keeper.sh b/org.glite.lb.utils/src/notif-keeper.sh
new file mode 100755 (executable)
index 0000000..ab3d28c
--- /dev/null
+++ b/org.glite.lb.utils/src/notif-keeper.sh
@@ -0,0 +1,96 @@
+#! /bin/bash
+
+GLITE_LOCATION=${GLITE_LOCATION:-"/opt/glite"}
+NOTIFY=${GLITE_LB_NOTIFY:-"$GLITE_LOCATION/bin/glite-lb-notify"}
+FILE='/var/tmp/msg-notif.txt'
+SERVER="$1"
+TTL=${2:-"7200"}
+STAT="stat -c %Y"
+#STAT="stat -f %m"
+
+
+function load() {
+       out="`cat \"$FILE\"`"
+       nid=`echo "$out" | grep '^notification ID:' | cut -f3 -d' '`
+       val=`echo "$out" | grep '^valid' | sed 's/[^(]*(\([^)]*\)).*/\1/'`
+       ori=`$STAT "$FILE"`
+
+       if [ -z "$nid" -o -z "$val" ]; then
+               val=-1
+               return 1
+       fi
+}
+
+function save_ttl() {
+       mv "$FILE" "$FILE.1"
+       cat "$FILE" | grep -v '^valid' > "$FILE"
+}
+
+
+# -- set up --
+
+if [ -z "$SERVER" ]; then
+       echo "Usage: $0 LB_SERVER [ TTL NEW_NOTIF_ARGUMRNTS... ]"
+       echo
+       echo "Environment:"
+       echo "  DROP: drop the notification"
+       echo "  DEBUG: show progress"
+       exit 1
+fi
+shift
+shift
+
+if [ -n "$GLITE_HOST_CERT" -a -n "$GLITE_HOST_KEY" ] ;then
+        X509_USER_CERT="$GLITE_HOST_CERT"
+        X509_USER_KEY="$GLITE_HOST_KEY"
+else
+       echo "WARNING: host certificate not specified"
+fi
+
+export GLITE_WMS_NOTIF_SERVER="$SERVER"
+export X509_USER_CERT
+export X509_USER_KEY
+
+now=`date '+%s'`
+val=-1
+ori=$now
+
+# -- load previous/create new --
+
+if [ -s "$FILE" ]; then load; fi
+if [ -z "$nid" -o $val -le $now ]; then
+       $NOTIFY new -t $TTL "$@" > "$FILE"
+       load
+       if [ $? != 0 ]; then
+               echo "Can't create notification"
+               exit 1
+       fi
+       [ -z "$DEBUG" ] || echo "`date '+%Y-%m-%d %H:%M:%S'`: notification '$nid' created"
+fi
+
+# -- refresh --
+
+let ref="($ori+$val)/2"
+if [ $ref -le $now ]; then
+       $NOTIFY refresh -t $TTL $nid > "$FILE"-new
+       if grep '^valid' "$FILE"-new >/dev/null 2>&1; then
+               mv "$FILE" "$FILE".1
+               grep '^notification ID:' "$FILE".1 > "$FILE"
+               cat "$FILE"-new >> "$FILE"
+               rm -f "$FILE"-new
+               [ -z "$DEBUG" ] || echo "`date '+%Y-%m-%d %H:%M:%S'`: notification '$nid' refreshed"
+       else
+               echo "Can't refresh notification '$nid'"
+               # next attempt in half of the remaining time
+               touch "$FILE"
+               exit 1
+       fi
+fi
+
+# -- drop --
+
+if [ ! -z "$DROP" ]; then
+       $NOTIFY drop $nid
+       rm -f "$FILE"
+       [ -z "$DEBUG" ] || echo "`date '+%Y-%m-%d %H:%M:%S'`: notification '$nid' dropped"
+fi