TrickleNode

var errors = batch
  |query('SELECT value FROM errors')
  |trickle()

var errors = stream
  |from()
  |window()
    .period(10m)
    .every(5m)
  |trickle()

trickle.quiet()

trickle|alert()

trickle|barrier()

trickle|bottom(num int64, field string, fieldsAndTags ...string)

trickle|changeDetect(field string)

trickle|combine(expressions ...ast.LambdaNode)

trickle|count(field string)

trickle|cumulativeSum(field string)

    var data = stream
        |from()...
    // Trigger critical alert if the throughput drops below 100 points per 10s and checked every 10s.
    data
        |deadman(100.0, 10s)
    //Do normal processing of data
    data...

    var data = stream
        |from()...
    // Trigger critical alert if the throughput drops below 100 points per 10s and checked every 10s.
    data
        |stats(10s)
            .align()
        |derivative('emitted')
            .unit(10s)
            .nonNegative()
        |alert()
            .id('node \'stream0\' in task \'{{ .TaskName }}\'')
            .message('{{ .ID }} is {{ if eq .Level "OK" }}alive{{ else }}dead{{ end }}: {{ index .Fields "emitted" | printf "%0.3f" }} points/10s.')
            .crit(lambda: "emitted" <= 100.0)
    //Do normal processing of data
    data...

    var data = stream
        |from()...
    // Trigger critical alert if the throughput drops below 100 points per 10s and checked every 10s.
    data
        |deadman(100.0, 10s)
            .slack()
            .channel('#dead_tasks')
    //Do normal processing of data
    data...

    var data = stream
        |from()...
    // Trigger critical alert if the throughput drops below 100 points per 10s and checked every 10s.
    // Only trigger the alert if the time of day is between 8am-5pm.
    data
        |deadman(100.0, 10s, lambda: hour("time") >= 8 AND hour("time") <= 17)
    //Do normal processing of data
    data...

trickle|deadman(threshold float64, interval time.Duration, expr ...ast.LambdaNode)

trickle|default()

trickle|delete()

trickle|derivative(field string)

trickle|difference(field string)

trickle|distinct(field string)

trickle|ec2Autoscale()

trickle|elapsed(field string, unit time.Duration)

trickle|eval(expressions ...ast.LambdaNode)

trickle|first(field string)

trickle|flatten()

    |groupBy(*)

trickle|groupBy(tag ...interface{})

trickle|holtWinters(field string, h int64, m int64, interval time.Duration)

trickle|holtWintersWithFit(field string, h int64, m int64, interval time.Duration)

trickle|httpOut(endpoint string)

trickle|httpPost(url ...string)

trickle|influxDBOut()

trickle|join(others ...Node)

trickle|k8sAutoscale()

trickle|kapacitorLoopback()

trickle|last(field string)

trickle|log()

trickle|max(field string)

trickle|mean(field string)

trickle|median(field string)

trickle|min(field string)

trickle|mode(field string)

trickle|movingAverage(field string, window int64)

trickle|percentile(field string, percentile float64)

trickle|sample(rate interface{})

trickle|shift(shift time.Duration)

trickle|sideload()

trickle|spread(field string)

trickle|stateCount(expression ast.LambdaNode)

trickle|stateDuration(expression ast.LambdaNode)

trickle|stats(interval time.Duration)

trickle|stddev(field string)

trickle|sum(field string)

trickle|swarmAutoscale()

trickle|top(num int64, field string, fieldsAndTags ...string)

trickle|union(node ...Node)

trickle|where(expression ast.LambdaNode)

trickle|window()