diff options
Diffstat (limited to 'collectors/charts.d.plugin/example')
| -rw-r--r-- | collectors/charts.d.plugin/example/README.md | 5 | ||||
| -rw-r--r-- | collectors/charts.d.plugin/example/example.chart.sh | 106 |
2 files changed, 58 insertions, 53 deletions
diff --git a/collectors/charts.d.plugin/example/README.md b/collectors/charts.d.plugin/example/README.md index 98562d624..de21f6ad6 100644 --- a/collectors/charts.d.plugin/example/README.md +++ b/collectors/charts.d.plugin/example/README.md @@ -1,3 +1,8 @@ +<!-- +title: "Example" +custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/charts.d.plugin/example/README.md +--> + # Example This is just an example charts.d data collector. diff --git a/collectors/charts.d.plugin/example/example.chart.sh b/collectors/charts.d.plugin/example/example.chart.sh index 8bae570a3..5ff51a579 100644 --- a/collectors/charts.d.plugin/example/example.chart.sh +++ b/collectors/charts.d.plugin/example/example.chart.sh @@ -32,63 +32,63 @@ example_last=0 example_count=0 example_get() { - # do all the work to collect / calculate the values - # for each dimension - # - # Remember: - # 1. KEEP IT SIMPLE AND SHORT - # 2. AVOID FORKS (avoid piping commands) - # 3. AVOID CALLING TOO MANY EXTERNAL PROGRAMS - # 4. USE LOCAL VARIABLES (global variables may overlap with other modules) - - example_value1=$RANDOM - example_value2=$RANDOM - example_value3=$RANDOM - example_value4=$((8192 + (RANDOM * 16383 / 32767))) - - if [ $example_count -gt 0 ]; then - example_count=$((example_count - 1)) - - [ $example_last -gt 16383 ] && example_value4=$((example_last + (RANDOM * ((32767 - example_last) / 2) / 32767))) - [ $example_last -le 16383 ] && example_value4=$((example_last - (RANDOM * (example_last / 2) / 32767))) - else - example_count=$((1 + (RANDOM * 5 / 32767))) - - if [ $example_last -gt 16383 ] && [ $example_value4 -gt 16383 ]; then - example_value4=$((example_value4 - 16383)) - fi - if [ $example_last -le 16383 ] && [ $example_value4 -lt 16383 ]; then - example_value4=$((example_value4 + 16383)) - fi - fi - example_last=$example_value4 - - # this should return: - # - 0 to send the data to netdata - # - 1 to report a failure to collect the data - - return 0 + # do all the work to collect / calculate the values + # for each dimension + # + # Remember: + # 1. KEEP IT SIMPLE AND SHORT + # 2. AVOID FORKS (avoid piping commands) + # 3. AVOID CALLING TOO MANY EXTERNAL PROGRAMS + # 4. USE LOCAL VARIABLES (global variables may overlap with other modules) + + example_value1=$RANDOM + example_value2=$RANDOM + example_value3=$RANDOM + example_value4=$((8192 + (RANDOM * 16383 / 32767))) + + if [ $example_count -gt 0 ]; then + example_count=$((example_count - 1)) + + [ $example_last -gt 16383 ] && example_value4=$((example_last + (RANDOM * ((32767 - example_last) / 2) / 32767))) + [ $example_last -le 16383 ] && example_value4=$((example_last - (RANDOM * (example_last / 2) / 32767))) + else + example_count=$((1 + (RANDOM * 5 / 32767))) + + if [ $example_last -gt 16383 ] && [ $example_value4 -gt 16383 ]; then + example_value4=$((example_value4 - 16383)) + fi + if [ $example_last -le 16383 ] && [ $example_value4 -lt 16383 ]; then + example_value4=$((example_value4 + 16383)) + fi + fi + example_last=$example_value4 + + # this should return: + # - 0 to send the data to netdata + # - 1 to report a failure to collect the data + + return 0 } # _check is called once, to find out if this chart should be enabled or not example_check() { - # this should return: - # - 0 to enable the chart - # - 1 to disable the chart + # this should return: + # - 0 to enable the chart + # - 1 to disable the chart - # check something - [ "${example_magic_number}" != "12345" ] && error "manual configuration required: you have to set example_magic_number=$example_magic_number in example.conf to start example chart." && return 1 + # check something + [ "${example_magic_number}" != "12345" ] && error "manual configuration required: you have to set example_magic_number=$example_magic_number in example.conf to start example chart." && return 1 - # check that we can collect data - example_get || return 1 + # check that we can collect data + example_get || return 1 - return 0 + return 0 } # _create is called once, to create the charts example_create() { - # create the chart with 3 dimensions - cat <<EOF + # create the chart with 3 dimensions + cat << EOF CHART example.random '' "Random Numbers Stacked Chart" "% of random numbers" random random stacked $((example_priority)) $example_update_every DIMENSION random1 '' percentage-of-absolute-row 1 1 DIMENSION random2 '' percentage-of-absolute-row 1 1 @@ -97,18 +97,18 @@ CHART example.random2 '' "A random number" "random number" random random area $( DIMENSION random '' absolute 1 1 EOF - return 0 + return 0 } # _update is called continuously, to collect the values example_update() { - # the first argument to this function is the microseconds since last update - # pass this parameter to the BEGIN statement (see bellow). + # the first argument to this function is the microseconds since last update + # pass this parameter to the BEGIN statement (see bellow). - example_get || return 1 + example_get || return 1 - # write the result of the work. - cat <<VALUESEOF + # write the result of the work. + cat << VALUESEOF BEGIN example.random $1 SET random1 = $example_value1 SET random2 = $example_value2 @@ -119,5 +119,5 @@ SET random = $example_value4 END VALUESEOF - return 0 + return 0 } |