script to trace history of one game in db by polling db and listing

changes

xwords4/relay/scripts/track_room.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+set -e -u
+
+CONNNAME=""
+LASTLINE=""
+INTERVAL=30
+
+usage() {
+    [ $# -gt 0 ] && echo "Error: $1"
+    echo "Usage: $(basename $0) connname"
+    exit 1
+}
+
+read_row() {
+    echo "select * from games where connname='${CONNNAME}';" | psql xwgames | grep $CONNNAME
+}
+
+print_line() {
+    echo "$(date): $LASTLINE"
+}
+
+[ $# -eq 1 ] || usage
+
+CONNNAME=$1
+LASTLINE=$(read_row $CONNNAME)
+[ -z "$LASTLINE" ] && usage "$CONNNAME not found"
+
+print_line
+
+while :; do
+    sleep $INTERVAL
+    NEWLINE=$(read_row)
+    if [ "$NEWLINE" != "$LASTLINE" ]; then
+        LASTLINE="$NEWLINE"
+        print_line
+    fi
+done