total-bandwidth

#! /bin/bash

set -Eeuo pipefail

result_path=""

# Handle command-line arguments
if [[ "$#" -gt 0 ]]; then
	while [[ "$#" -gt 0 ]]; do
		case "$1" in
			"--result-path")
				result_path=$2
				shift
				shift
				;;
			*)
				echo ""
				echo "Error: invalid argument $1."
				exit 1
				;;
		esac
	done
fi

if [[ "${result_path}" == "" ]]; then
	echo "Please enter result log file(s) path using the '--result-path' option."
	exit 1
fi

# Get iperf3 instance bandwidth from log
get_instance_bandwidth() {
	bandwidth_string=$(tail --lines=4 "$1" | head --lines=1)
	first_column=$(echo "${bandwidth_string}" | awk '{print $1}')

	if [[ "${first_column}" == "[" ]]; then
		echo "${bandwidth_string}" | awk '{print $7}'
	else
		echo "${bandwidth_string}" | awk '{print $6}'
	fi
}

# Get all log file names in the 'result_path'
log_file_paths=$(ls "${result_path}"/*.log) # Error if no log files present
log_file_path_arr=("${log_file_paths}")

# Calculate total bandwidth
total_bandwidth=0

for file_path in ${log_file_path_arr[@]}; do
	instance_bandwidth=$(get_instance_bandwidth "${file_path}")
	total_bandwidth=$(echo "${total_bandwidth} + ${instance_bandwidth}" | bc)
done

echo "${total_bandwidth}"