telegraf/internal/models/running_processor_test.go

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package models
import (
"testing"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
)
type TestProcessor struct {
}
func (f *TestProcessor) SampleConfig() string { return "" }
func (f *TestProcessor) Description() string { return "" }
// Apply renames:
// "foo" to "fuz"
// "bar" to "baz"
// And it also drops measurements named "dropme"
func (f *TestProcessor) Apply(in ...telegraf.Metric) []telegraf.Metric {
out := make([]telegraf.Metric, 0)
for _, m := range in {
switch m.Name() {
case "foo":
out = append(out, testutil.TestMetric(1, "fuz"))
case "bar":
out = append(out, testutil.TestMetric(1, "baz"))
case "dropme":
// drop the metric!
default:
out = append(out, m)
}
}
return out
}
func NewTestRunningProcessor() *RunningProcessor {
out := &RunningProcessor{
Name: "test",
Processor: &TestProcessor{},
Config: &ProcessorConfig{Filter: Filter{}},
}
return out
}
func TestRunningProcessor(t *testing.T) {
inmetrics := []telegraf.Metric{
testutil.TestMetric(1, "foo"),
testutil.TestMetric(1, "bar"),
testutil.TestMetric(1, "baz"),
}
expectedNames := []string{
"fuz",
"baz",
"baz",
}
rfp := NewTestRunningProcessor()
filteredMetrics := rfp.Apply(inmetrics...)
actualNames := []string{
filteredMetrics[0].Name(),
filteredMetrics[1].Name(),
filteredMetrics[2].Name(),
}
assert.Equal(t, expectedNames, actualNames)
}
func TestRunningProcessor_WithNameDrop(t *testing.T) {
inmetrics := []telegraf.Metric{
testutil.TestMetric(1, "foo"),
testutil.TestMetric(1, "bar"),
testutil.TestMetric(1, "baz"),
}
expectedNames := []string{
"foo",
"baz",
"baz",
}
rfp := NewTestRunningProcessor()
rfp.Config.Filter.NameDrop = []string{"foo"}
assert.NoError(t, rfp.Config.Filter.Compile())
filteredMetrics := rfp.Apply(inmetrics...)
actualNames := []string{
filteredMetrics[0].Name(),
filteredMetrics[1].Name(),
filteredMetrics[2].Name(),
}
assert.Equal(t, expectedNames, actualNames)
}
func TestRunningProcessor_DroppedMetric(t *testing.T) {
inmetrics := []telegraf.Metric{
testutil.TestMetric(1, "dropme"),
testutil.TestMetric(1, "foo"),
testutil.TestMetric(1, "bar"),
}
expectedNames := []string{
"fuz",
"baz",
}
rfp := NewTestRunningProcessor()
filteredMetrics := rfp.Apply(inmetrics...)
actualNames := []string{
filteredMetrics[0].Name(),
filteredMetrics[1].Name(),
}
assert.Equal(t, expectedNames, actualNames)
}