plotGraph.sh

#!/bin/bash

# Read collected metrices from the CSV file and plot graphs
#
# This function will end script execution.
#
# This function is to be called after an interrupt like SIGINT or SIGKILL
# is received.
#
timestamp_format="%Y-%m-%d %H:%M:%S"
function plotGraph() {

  # bring cursor to next line after interrupt
      local -a csv_filenames=()
      local -a ref_pids=()
      local csv_filename
      for csv_filename in "$@" ; do
            if [ -f "$csv_filename" ]; then
                  csv_filenames+=( "$csv_filename" )
                  ref_pids+=( "$(head -n 2 "$csv_filename"|tail -1|cut -d , -f 2)" )
            fi
      done
      local ref_csv_filename="${csv_filenames[0]}"
      local ref_pid="${ref_pids[0]}"
      local dir_name="$(dirname "$ref_csv_filename")"
      local output_filename="${dir_name}/metrics.pdf"
      local command="${dir_name}/command-${ref_pid}.txt"
      if [ -f "$command" ] ; then
            local commandline="$(<$command)"
            local title="Command \"${commandline}\""
      elif [ -n "$ref_pid" ] ; then
            local title="Process ID $ref_pid"
      elif [ -n "$pid" ] ; then
            local title="Process ID $pid"
      else
            local title="Process <unknown>"
      fi
  # plot graphs if there is a data file
  if [ "${#csv_filenames[@]}" -gt 0 ]; then
      local creation="$(stat -c '%w' "$ref_csv_filename")"
    gnuplot <<- EOF
      title='$title' . "\n" . '$creation'
      csv_filenames = "${csv_filenames[@]}"
      ref_pids = "${ref_pids[@]}"
      num_pids = words(ref_pids)
      output_filename='$output_filename'
      
      print "Using data from ". csv_filenames . "..."
      print "Plotting graphs to ". output_filename
      
      # Set separator to comma
      set datafile separator ","
      
      set xdata time
      set timefmt "$timestamp_format"
      
      #set term dumb
      #base=""
      #countme=2
      #first(x) = (countme > 0) ? (countme  = countme -1 , base = x, base) : base
      #plot csv_filename using 1:2
      #print sprintf("Esto es una %s",base)
      
      # Output to png with a font size of 10, using pngcairo for anti-aliasing
      #set term pngcairo size 1024,800 noenhanced font "Helvetica,10"
      set term pdfcairo size 29.7cm,21cm enhanced font "Helvetica,10"

      set format x "%H:%M:%S"
      
      # Set border color around the graph
      set border ls 50 lt rgb "#939393"

      # Hide left and right vertical borders
      set border 16 lw 0
      set border 64 lw 0

      # Set tic color
      set tics nomirror textcolor rgb "#939393"

      # Set horizontal lines on the ytics
      set grid ytics lt 1 lc rgb "#d8d8d8" lw 2
      # set yrange [0:100]

      set y2tics nomirror

      # Rotate x axis lables
      set xtics rotate

      # Set graph size relative to the canvas
      set size 1,0.95

      # Move legend to the bottom
      set key bmargin center box lt rgb "#d8d8d8" horizontal

      
      # Plot graph,
      # xticlabels(1) - first column as x tic labels
      # "with lines" - line graph
      # "smooth unique"
      # "lw 2" - line width
      # "lt rgb " - line style color
      # "t " - legend labels
      #
      # CPU and memory usage
      #set output dir_name . "/cpu-mem-usage.png"
      



      set output output_filename
      set title "CPU and Memory Usage\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:5 with lines smooth unique lw 2 lt rgb "#4848d6" t word(ref_pids, idx) . " CPU Usage %",\
       for [idx=1:num_pids] word(csv_filenames, idx) using 1:6 with lines smooth unique lw 2 lt rgb "#b40000" t word(ref_pids, idx) . " Memory Usage %"

      # CPU and memory usage
      set title "CPU, Virtual and Resident Memory Usage\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:5 with lines smooth unique lw 2 lt rgb "#4848d6" t word(ref_pids, idx) . " CPU Usage %" axis x1y1,\
       for [idx=1:num_pids] word(csv_filenames, idx) using 1:3 with lines smooth unique lw 2 lt rgb "#b40000" t word(ref_pids, idx) . " Virtual memory" axis x1y2, \
       for [idx=1:num_pids] word(csv_filenames, idx) using 1:4 with lines smooth unique lw 2 lt rgb "#b48000" t word(ref_pids, idx) . " Resident memory" axis x1y2
      
      # CPU and memory usage
      set title "CPU and Virtual Memory Usage\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:5 with lines smooth unique lw 2 lt rgb "#4848d6" t word(ref_pids, idx) . " CPU Usage %" axis x1y1,\
       for [idx=1:num_pids] word(csv_filenames, idx) using 1:3 with lines smooth unique lw 2 lt rgb "#b40000" t word(ref_pids, idx) . " Virtual memory" axis x1y2
      
      # CPU and memory usage
      set title "CPU and Resident Memory Usage\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:5 with lines smooth unique lw 2 lt rgb "#4848d6" t word(ref_pids, idx) . " CPU Usage %" axis x1y1,\
       for [idx=1:num_pids] word(csv_filenames, idx) using 1:4 with lines smooth unique lw 2 lt rgb "#b48000" t word(ref_pids, idx) . " Resident memory" axis x1y2
      
      # TCP count
      #set output dir_name . "/tcp-count.png"
      set title "TCP Connections Count\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:7 with lines smooth unique lw 2 lt rgb "#ed8004" t word(ref_pids, idx) . " TCP Connection Count" axis x1y2

      # Thread count
      #set output dir_name . "/thread-count.png"
      set title "Thread Count\n" . title noenhanced
      plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:8 with lines smooth unique lw 2 lt rgb "#48d65b" t word(ref_pids, idx) . " Thread Count" axis x1y2

       # All together
       #set output dir_name . "/all-metrices.png"
       set title "All Metrics\n" . title noenhanced
       plot for [idx=1:num_pids] word(csv_filenames, idx) using 1:5 with lines smooth unique lw 2 lt rgb "#4848d6" t word(ref_pids, idx) . " CPU Usage %",\
        for [idx=1:num_pids] word(csv_filenames, idx) using 1:6 with lines smooth unique lw 2 lt rgb "#b40000" t word(ref_pids, idx) . " Memory Usage %", \
        for [idx=1:num_pids] word(csv_filenames, idx) using 1:7 with lines smooth unique lw 2 lt rgb "#ed8004" t word(ref_pids, idx) . " TCP Connection Count", \
        for [idx=1:num_pids] word(csv_filenames, idx) using 1:8 with lines smooth unique lw 2 lt rgb "#48d65b" t word(ref_pids, idx) . " Thread Count"
EOF
  fi

}

if [ "$0" == "${BASH_SOURCE[0]}" ] ; then
      plotGraph "$@"
fi