How do I format numbers within Bosun templates?
In a Bosun template, is it possible to format the output of an evaluated variable from the alert to less decimal places of precision?
Simple Example:
template test_template{
subject = test
body = {{.Eval .Alert.Vars.average_runtime}} seconds
}
alert test_alert{
template test_template
$average_runtime = avg(q("avg:metric_name", "24h",""))
crit = $average_runtime > 150.0
}
Results in
190.71165892385326 seconds
in the template body, which is unnecessarily precise. Ideally I would like to see:
190.71 seconds
In go templates you can use printf
to format output according to whatever format string you want. This snippet works for me:
template test_template{
subject = test
body = {{printf "%.3f" (.Eval .Alert.Vars.average_runtime)}} seconds
}
alert test_alert{
template = test_template
$average_runtime = 1234.5678999
crit = 1
}
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