contrib: Add a script to clean up in regular intervals

This script should be run from cron. It compresses and deletes older
files.

Makefile.am

@@ -1,6 +1,6 @@
 AUTOMAKE_OPTIONS = foreign dist-bzip2 1.6
 
-SUBDIRS = include src
+SUBDIRS = include src contrib
 
 BUILT_SOURCES = $(top_srcdir)/.version
 EXTRA_DIST = git-version-gen

configure.ac

@@ -57,4 +57,5 @@ AC_OUTPUT(
     include/Makefile
     include/osmo-pcap/Makefile
     src/Makefile
+    contrib/Makefile
     Makefile)

contrib/Makefile.am

@@ -0,0 +1 @@
+dist_pkgdata_DATA = osmo_pcap_clean_old

contrib/osmo_pcap_clean_old

@@ -0,0 +1,47 @@
+#! /bin/sh
+
+# Script designed to clean up (zip/delete) old files
+# Adjust the variables below and then copy/symlink this script
+# to /etc/cron/cron.{hourly,daily}
+
+# We want to keep the filenames dated and that confuses logrotate,
+# hence this script.
+
+# Number of pcap files per client
+NUMFILES=8
+ZIPAFTER=3
+VERBOSE=0
+
+# Path where the logfiles reside in
+BASEPATH="/var/lib/osmo-pcap/"
+
+# Find the client names present in basepath
+# Check how many files there are for each client
+# Delete files in excess of NUMFILES
+
+cd "$BASEPATH"
+
+
+do_cleanup()
+{
+	i=1
+	find . -name "trace-$1*" |sort | while read LOG; do
+		if [ $i -gt $NUMFILES ]; then
+			[ $VERBOSE -eq 1 ] && echo "Deleting file \"$LOG\""
+			rm -f "$LOG"
+		elif [ $i -gt $ZIPAFTER ]; then
+				if [ "${LOG##*.}" != "gz" ]; then
+					[ $VERBOSE -eq 1 ] && echo "Compressing file \"$LOG\""
+					gzip "$LOG"
+				fi
+		else
+			[ $VERBOSE -eq 1 ] && echo "Noop for file \"$LOG\""
+		fi
+		i=$(($i+1))
+	done
+}
+
+find . -name "trace-*" |sed -e "s/.*trace-\([^-]\+\).*/\1/" |sort |uniq | while read CLIENT; do
+	[ $VERBOSE -eq 1 ] && echo "Cleaning logs for $CLIENT"
+	do_cleanup "$CLIENT"
+done