3 # if this chart is called X.chart.sh, then all functions and global variables
6 # _update_every is a special variable - it holds the number of seconds
7 # between the calls of the _update() function
10 example_priority=150000
12 # _check is called once, to find out if this chart should be enabled or not
15 # - 0 to enable the chart
16 # - 1 to disable the chart
21 # _create is called once, to create the charts
23 # create the chart with 3 dimensions
25 CHART example.random '' "Random Numbers Stacked Chart" "% of random numbers" random random stacked $((example_priority)) $example_update_every
26 DIMENSION random1 '' percentage-of-absolute-row 1 1
27 DIMENSION random2 '' percentage-of-absolute-row 1 1
28 DIMENSION random3 '' percentage-of-absolute-row 1 1
29 CHART example.random2 '' "A random number" "random number" random random area $((example_priority + 1)) $example_update_every
30 DIMENSION random '' absolute 1 1
36 # _update is called continiously, to collect the values
40 local value1 value2 value3 value4 mode
42 # the first argument to this function is the microseconds since last update
43 # pass this parameter to the BEGIN statement (see bellow).
45 # do all the work to collect / calculate the values
47 # remember: KEEP IT SIMPLE AND SHORT
52 value4=$((8192 + (RANDOM * 16383 / 32767) ))
54 if [ $example_count -gt 0 ]
56 example_count=$((example_count - 1))
58 [ $example_last -gt 16383 ] && value4=$((example_last + (RANDOM * ( (32767 - example_last) / 2) / 32767)))
59 [ $example_last -le 16383 ] && value4=$((example_last - (RANDOM * (example_last / 2) / 32767)))
61 example_count=$((1 + (RANDOM * 5 / 32767) ))
63 [ $example_last -gt 16383 -a $value4 -gt 16383 ] && value4=$((value4 - 16383))
64 [ $example_last -le 16383 -a $value4 -lt 16383 ] && value4=$((value4 + 16383))
68 # write the result of the work.
70 BEGIN example.random $1
75 BEGIN example.random2 $1
79 # echo >&2 "example_count = $example_count value = $value4"