Pascal
b336ea4298
- no need to display ping for 100% loss - use ping=-100 to show service not known error - -1 to hard to differentiate from low pings if limit is > 200
138 lines
3.6 KiB
Bash
Executable File
138 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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DATE_FORMAT=${DATE_FORMAT:-+%s} # +%s = epoch, -Iseconds = iso8601
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CYCLE=${CYCLE:-60s}
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OUTPUT_FILE=${OUTPUT_FILE:-ping.csv}
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PING_COUNT=${PING_COUNT:-10}
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# directories are set relative from the scripts path
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script_path=$(cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd)
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OUTPUT_PATH=${OUTPUT_PATH:-"$script_path/../data"}
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SERVER_FILE=${SERVER_FILE:-"$script_path/../servers.env"}
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# helper functions
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function log()
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{
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local time=$(date +%F_%T)
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local prefix="LOG"
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case $1 in
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ERR | ERROR)
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prefix="ERR"
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shift
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;;
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INF | INFO)
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prefix="INF"
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shift
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;;
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WAR | WARNING)
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prefix="WAR"
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shift
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;;
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esac
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local func=$1; shift
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# remove any \n
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#local text=$(echo "$@"| tr '\n' '#' | sed 's|#|\\n |g')
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case "$log_file" in
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"")
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echo "[$time]:[$prefix]:[$0][$func]: $@" 2>&1
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;;
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*)
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echo "[$time]:[$prefix]:[$0][$func]: $@" >> $log_file
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;;
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esac
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}
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function sleep_wait()
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{
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# waiting on sleep to be able to handle SIGTERM
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sleep $1 &
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wait $!
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}
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function exit_handler()
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{
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echo "stopping pinger"
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exit
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}
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trap "exit_handler" SIGINT
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trap "exit_handler" SIGTERM
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# main functions
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# this function assumes the following ping output format:
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## valid server
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# --- 192.168.0.1 ping statistics ---
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# 10 packets transmitted, 10 received, 0% packet loss, time 1806ms
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# rtt min/avg/max/mdev = 0.278/0.361/1.010/0.216 ms
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## valid server 100% package loss
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# --- 10.0.0.2 ping statistics ---
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# 10 packets transmitted, 0 received, 100% packet loss, time 1861ms
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# [empty line]
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## invalid server
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# [no output]
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function ping_server()
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{
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local server="$1"
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local packet_loss=""
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ifs_old=$IFS
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IFS=$'\n'
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ping_output=( $(ping $server -c$PING_COUNT -i0.2 -q 2>/dev/null| tail -n2) )
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IFS=$ifs_old
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packet_loss=$(echo "${ping_output[0]}" | grep -Eo "[.[:digit:]]{1,10}%")
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satistic="$(echo "${ping_output[1]}" | cut -d' ' -f4 | sed -E 's/\//,/g')"
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# Name or service not known
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if [ "${#packet_loss}" -eq 0 ]; then
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# make this Error visually apparent in the plot
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packet_loss="100%"
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satistic="-100,-100,-100,-100"
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fi
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# 100% package loss
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if [ "${#satistic}" -eq 0 ]; then
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# don't need to plot this data as package loss is displayed
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satistic="NaN,NaN,NaN,NaN"
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fi
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echo "$(date $DATE_FORMAT),$server,$packet_loss,$satistic"
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}
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function load_server_file()
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{
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local result=""
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if [ -f "$SERVER_FILE" ]; then
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local server_file="$(cat $SERVER_FILE)"
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for server in ${server_file[@]}; do
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result="$result $(echo "$server" | cut -f1 -d":")"
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done
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fi
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echo "$result"
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}
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main()
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{
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log INFO main DO NOT PING SERVERS YOU DO NOT HAVE PERMISSION TO DO SO!
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# Environment SERVERS > arguments $@ > file $SERVER_FILE
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local servers=( ${SERVERS:-${@:-$(load_server_file)}} )
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local output_file="$OUTPUT_PATH/$OUTPUT_FILE"
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log main "writing to $output_file"
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while true; do
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if [ ! -d $OUTPUT_PATH ]; then
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mkdir -p $OUTPUT_PATH
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fi
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if [ ! -f $output_file ]; then
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echo "Epoch,Server,PacketLoss,Min,Average,Max,Deviation" > $output_file
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fi
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log main "pinging ${servers[@]}"
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for server in "${servers[@]}"; do
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# run in subshell to catch SIGTERM
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ping_server "$server" >> $output_file &
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wait $!
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done
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log main "sleeping $CYCLE"
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sleep_wait $CYCLE
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done
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}
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main "$@"
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