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execd_test.go
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execd_test.go
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package execd
import (
"flag"
"fmt"
"os"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/influxdata/telegraf/config"
"github.com/influxdata/telegraf/metric"
"github.com/influxdata/telegraf/plugins/parsers/influx"
"github.com/influxdata/telegraf/plugins/serializers"
"github.com/influxdata/telegraf/testutil"
)
func TestExternalProcessorWorks(t *testing.T) {
e := New()
e.Log = testutil.Logger{}
exe, err := os.Executable()
require.NoError(t, err)
t.Log(exe)
e.Command = []string{exe, "-countmultiplier"}
e.RestartDelay = config.Duration(5 * time.Second)
acc := &testutil.Accumulator{}
require.NoError(t, e.Start(acc))
now := time.Now()
orig := now
for i := 0; i < 10; i++ {
m := metric.New("test",
map[string]string{
"city": "Toronto",
},
map[string]interface{}{
"population": 6000000,
"count": 1,
},
now)
now = now.Add(1)
require.NoError(t, e.Add(m, acc))
}
acc.Wait(1)
require.NoError(t, e.Stop())
acc.Wait(9)
metrics := acc.GetTelegrafMetrics()
m := metrics[0]
expected := testutil.MustMetric("test",
map[string]string{
"city": "Toronto",
},
map[string]interface{}{
"population": 6000000,
"count": 2,
},
orig,
)
testutil.RequireMetricEqual(t, expected, m)
metricTime := m.Time().UnixNano()
// make sure the other 9 are ordered properly
for i := 0; i < 9; i++ {
m = metrics[i+1]
require.EqualValues(t, metricTime+1, m.Time().UnixNano())
metricTime = m.Time().UnixNano()
}
}
func TestParseLinesWithNewLines(t *testing.T) {
e := New()
e.Log = testutil.Logger{}
exe, err := os.Executable()
require.NoError(t, err)
t.Log(exe)
e.Command = []string{exe, "-countmultiplier"}
e.RestartDelay = config.Duration(5 * time.Second)
acc := &testutil.Accumulator{}
require.NoError(t, e.Start(acc))
now := time.Now()
orig := now
m := metric.New("test",
map[string]string{
"author": "Mr. Gopher",
},
map[string]interface{}{
"phrase": "Gophers are amazing creatures.\nAbsolutely amazing.",
"count": 3,
},
now)
require.NoError(t, e.Add(m, acc))
acc.Wait(1)
require.NoError(t, e.Stop())
processedMetric := acc.GetTelegrafMetrics()[0]
expectedMetric := testutil.MustMetric("test",
map[string]string{
"author": "Mr. Gopher",
},
map[string]interface{}{
"phrase": "Gophers are amazing creatures.\nAbsolutely amazing.",
"count": 6,
},
orig,
)
testutil.RequireMetricEqual(t, expectedMetric, processedMetric)
}
var countmultiplier = flag.Bool("countmultiplier", false,
"if true, act like line input program instead of test")
func TestMain(m *testing.M) {
flag.Parse()
if *countmultiplier {
runCountMultiplierProgram()
os.Exit(0)
}
code := m.Run()
os.Exit(code)
}
func runCountMultiplierProgram() {
parser := influx.NewStreamParser(os.Stdin)
serializer, _ := serializers.NewInfluxSerializer()
for {
m, err := parser.Next()
if err != nil {
if err == influx.EOF {
return // stream ended
}
if parseErr, isParseError := err.(*influx.ParseError); isParseError {
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprintf(os.Stderr, "parse ERR %v\n", parseErr)
//nolint:revive // os.Exit called intentionally
os.Exit(1)
}
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprintf(os.Stderr, "ERR %v\n", err)
//nolint:revive // os.Exit called intentionally
os.Exit(1)
}
c, found := m.GetField("count")
if !found {
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprintf(os.Stderr, "metric has no count field\n")
//nolint:revive // os.Exit called intentionally
os.Exit(1)
}
switch t := c.(type) {
case float64:
t *= 2
m.AddField("count", t)
case int64:
t *= 2
m.AddField("count", t)
default:
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprintf(os.Stderr, "count is not an unknown type, it's a %T\n", c)
//nolint:revive // os.Exit called intentionally
os.Exit(1)
}
b, err := serializer.Serialize(m)
if err != nil {
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprintf(os.Stderr, "ERR %v\n", err)
//nolint:revive // os.Exit called intentionally
os.Exit(1)
}
//nolint:errcheck,revive // Test will fail anyway
fmt.Fprint(os.Stdout, string(b))
}
}