New program to process iftop log output (#6668)

* New program to process iftop log output

* fixes

* fix shellcheck

* address review comments

* more review comments

scripts/iftop-postprocess.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+#
+# Reports network bandwidth usage
+#
+set -e
+
+usage() {
+  echo "Usage: $0 <iftop log file> <temp file for interediate data> [optional public IP address]"
+  echo
+  echo Processes iftop log file, and extracts latest bandwidth used by each connection
+  echo
+  echo
+}
+
+if [ "$#" -lt 2 ]; then
+  usage
+  exit 1
+fi
+
+cd "$(dirname "$0")"
+
+awk '{ if ($3 ~ "=>") { print $2, $7 } else if ($2 ~ "<=") { print $1, $6 }} ' < "$1" \
+  | awk 'NR%2{printf "%s ",$0;next;}1' \
+  | awk '{ print "{ \"a\": \""$1"\", " "\"b\": \""$3"\", \"a_to_b\": \""$2"\", \"b_to_a\": \""$4"\"}," }' > "$2"
+
+if [ "$#" -ne 3 ]; then
+  solana-log-analyzer -i "$2"
+else
+  solana-log-analyzer -i "$2" map-IP --priv "$(hostname -i)" --pub "$3"
+fi
+
+exit 1