telegraf/plugins/serializers/json/json_test.go

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package json
import (
"fmt"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
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"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/metric"
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)
func MustMetric(v telegraf.Metric, err error) telegraf.Metric {
if err != nil {
panic(err)
}
return v
}
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func TestSerializeMetricFloat(t *testing.T) {
now := time.Now()
tags := map[string]string{
"cpu": "cpu0",
}
fields := map[string]interface{}{
"usage_idle": float64(91.5),
}
m, err := metric.New("cpu", tags, fields, now)
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assert.NoError(t, err)
s, _ := NewSerializer(0)
var buf []byte
buf, err = s.Serialize(m)
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assert.NoError(t, err)
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expS := []byte(fmt.Sprintf(`{"fields":{"usage_idle":91.5},"name":"cpu","tags":{"cpu":"cpu0"},"timestamp":%d}`, now.Unix()) + "\n")
assert.Equal(t, string(expS), string(buf))
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}
func TestSerialize_TimestampUnits(t *testing.T) {
tests := []struct {
name string
timestampUnits time.Duration
expected string
}{
{
name: "default of 1s",
timestampUnits: 0,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":1525478795}`,
},
{
name: "1ns",
timestampUnits: 1 * time.Nanosecond,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":1525478795123456789}`,
},
{
name: "1ms",
timestampUnits: 1 * time.Millisecond,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":1525478795123}`,
},
{
name: "10ms",
timestampUnits: 10 * time.Millisecond,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":152547879512}`,
},
{
name: "15ms is reduced to 10ms",
timestampUnits: 15 * time.Millisecond,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":152547879512}`,
},
{
name: "65ms is reduced to 10ms",
timestampUnits: 65 * time.Millisecond,
expected: `{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":152547879512}`,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
m := MustMetric(
metric.New(
"cpu",
map[string]string{},
map[string]interface{}{
"value": 42.0,
},
time.Unix(1525478795, 123456789),
),
)
s, _ := NewSerializer(tt.timestampUnits)
actual, err := s.Serialize(m)
require.NoError(t, err)
require.Equal(t, tt.expected+"\n", string(actual))
})
}
}
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func TestSerializeMetricInt(t *testing.T) {
now := time.Now()
tags := map[string]string{
"cpu": "cpu0",
}
fields := map[string]interface{}{
"usage_idle": int64(90),
}
m, err := metric.New("cpu", tags, fields, now)
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assert.NoError(t, err)
s, _ := NewSerializer(0)
var buf []byte
buf, err = s.Serialize(m)
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assert.NoError(t, err)
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expS := []byte(fmt.Sprintf(`{"fields":{"usage_idle":90},"name":"cpu","tags":{"cpu":"cpu0"},"timestamp":%d}`, now.Unix()) + "\n")
assert.Equal(t, string(expS), string(buf))
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}
func TestSerializeMetricString(t *testing.T) {
now := time.Now()
tags := map[string]string{
"cpu": "cpu0",
}
fields := map[string]interface{}{
"usage_idle": "foobar",
}
m, err := metric.New("cpu", tags, fields, now)
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assert.NoError(t, err)
s, _ := NewSerializer(0)
var buf []byte
buf, err = s.Serialize(m)
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assert.NoError(t, err)
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expS := []byte(fmt.Sprintf(`{"fields":{"usage_idle":"foobar"},"name":"cpu","tags":{"cpu":"cpu0"},"timestamp":%d}`, now.Unix()) + "\n")
assert.Equal(t, string(expS), string(buf))
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}
func TestSerializeMultiFields(t *testing.T) {
now := time.Now()
tags := map[string]string{
"cpu": "cpu0",
}
fields := map[string]interface{}{
"usage_idle": int64(90),
"usage_total": 8559615,
}
m, err := metric.New("cpu", tags, fields, now)
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assert.NoError(t, err)
s, _ := NewSerializer(0)
var buf []byte
buf, err = s.Serialize(m)
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assert.NoError(t, err)
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expS := []byte(fmt.Sprintf(`{"fields":{"usage_idle":90,"usage_total":8559615},"name":"cpu","tags":{"cpu":"cpu0"},"timestamp":%d}`, now.Unix()) + "\n")
assert.Equal(t, string(expS), string(buf))
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}
func TestSerializeMetricWithEscapes(t *testing.T) {
now := time.Now()
tags := map[string]string{
"cpu tag": "cpu0",
}
fields := map[string]interface{}{
"U,age=Idle": int64(90),
}
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m, err := metric.New("My CPU", tags, fields, now)
assert.NoError(t, err)
s, _ := NewSerializer(0)
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buf, err := s.Serialize(m)
assert.NoError(t, err)
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expS := []byte(fmt.Sprintf(`{"fields":{"U,age=Idle":90},"name":"My CPU","tags":{"cpu tag":"cpu0"},"timestamp":%d}`, now.Unix()) + "\n")
assert.Equal(t, string(expS), string(buf))
}
func TestSerializeBatch(t *testing.T) {
m := MustMetric(
metric.New(
"cpu",
map[string]string{},
map[string]interface{}{
"value": 42.0,
},
time.Unix(0, 0),
),
)
metrics := []telegraf.Metric{m, m}
s, _ := NewSerializer(0)
buf, err := s.SerializeBatch(metrics)
require.NoError(t, err)
require.Equal(t, []byte(`{"metrics":[{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":0},{"fields":{"value":42},"name":"cpu","tags":{},"timestamp":0}]}`), buf)
}