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parser_test.go
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parser_test.go
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package logfmt
import (
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/testutil"
)
func TestParse(t *testing.T) {
tests := []struct {
name string
measurement string
bytes []byte
want []telegraf.Metric
wantErr bool
}{
{
name: "no bytes returns no metrics",
want: []telegraf.Metric{},
},
{
name: "test without trailing end",
bytes: []byte("foo=\"bar\""),
measurement: "testlog",
want: []telegraf.Metric{
testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"foo": "bar",
},
time.Unix(0, 0),
),
},
},
{
name: "test with trailing end",
bytes: []byte("foo=\"bar\"\n"),
measurement: "testlog",
want: []telegraf.Metric{
testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"foo": "bar",
},
time.Unix(0, 0),
),
},
},
{
name: "logfmt parser returns all the fields",
bytes: []byte(`ts=2018-07-24T19:43:40.275Z lvl=info msg="http request" method=POST`),
measurement: "testlog",
want: []telegraf.Metric{
testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"lvl": "info",
"msg": "http request",
"method": "POST",
"ts": "2018-07-24T19:43:40.275Z",
},
time.Unix(0, 0),
),
},
},
{
name: "logfmt parser parses every line",
bytes: []byte(
"ts=2018-07-24T19:43:40.275Z lvl=info msg=\"http request\" method=POST\nparent_id=088876RL000 duration=7.45 log_id=09R4e4Rl000",
),
measurement: "testlog",
want: []telegraf.Metric{
testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"lvl": "info",
"msg": "http request",
"method": "POST",
"ts": "2018-07-24T19:43:40.275Z",
},
time.Unix(0, 0),
),
testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"parent_id": "088876RL000",
"duration": 7.45,
"log_id": "09R4e4Rl000",
},
time.Unix(0, 0),
),
},
},
{
name: "keys without = or values are ignored",
bytes: []byte(`i am no data.`),
want: []telegraf.Metric{},
wantErr: false,
},
{
name: "keys without values are ignored",
bytes: []byte(`foo="" bar=`),
want: []telegraf.Metric{},
wantErr: false,
},
{
name: "unterminated quote produces error",
measurement: "testlog",
bytes: []byte(`bar=baz foo="bar`),
want: []telegraf.Metric{},
wantErr: true,
},
{
name: "malformed key",
measurement: "testlog",
bytes: []byte(`"foo=" bar=baz`),
want: []telegraf.Metric{},
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
l := Parser{
metricName: tt.measurement,
}
got, err := l.Parse(tt.bytes)
if (err != nil) != tt.wantErr {
t.Errorf("Logfmt.Parse error = %v, wantErr %v", err, tt.wantErr)
return
}
testutil.RequireMetricsEqual(t, tt.want, got, testutil.IgnoreTime())
})
}
}
func TestParseLine(t *testing.T) {
tests := []struct {
name string
s string
measurement string
want telegraf.Metric
wantErr bool
}{
{
name: "No Metric In line",
want: nil,
wantErr: true,
},
{
name: "Log parser fmt returns all fields",
measurement: "testlog",
s: `ts=2018-07-24T19:43:35.207268Z lvl=5 msg="Write failed" log_id=09R4e4Rl000`,
want: testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"ts": "2018-07-24T19:43:35.207268Z",
"lvl": int64(5),
"msg": "Write failed",
"log_id": "09R4e4Rl000",
},
time.Unix(0, 0),
),
},
{
name: "ParseLine only returns metrics from first string",
measurement: "testlog",
s: "ts=2018-07-24T19:43:35.207268Z lvl=5 msg=\"Write failed\" log_id=09R4e4Rl000\nmethod=POST " +
"parent_id=088876RL000 duration=7.45 log_id=09R4e4Rl000",
want: testutil.MustMetric(
"testlog",
map[string]string{},
map[string]interface{}{
"ts": "2018-07-24T19:43:35.207268Z",
"lvl": int64(5),
"msg": "Write failed",
"log_id": "09R4e4Rl000",
},
time.Unix(0, 0),
),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
l := Parser{
metricName: tt.measurement,
}
got, err := l.ParseLine(tt.s)
if (err != nil) != tt.wantErr {
t.Fatalf("Logfmt.Parse error = %v, wantErr %v", err, tt.wantErr)
}
testutil.RequireMetricEqual(t, tt.want, got, testutil.IgnoreTime())
})
}
}
func TestTags(t *testing.T) {
tests := []struct {
name string
measurement string
tagKeys []string
s string
want telegraf.Metric
wantErr bool
}{
{
name: "logfmt parser returns tags and fields",
measurement: "testlog",
tagKeys: []string{"lvl"},
s: "ts=2018-07-24T19:43:40.275Z lvl=info msg=\"http request\" method=POST",
want: testutil.MustMetric(
"testlog",
map[string]string{
"lvl": "info",
},
map[string]interface{}{
"msg": "http request",
"method": "POST",
"ts": "2018-07-24T19:43:40.275Z",
},
time.Unix(0, 0),
),
},
{
name: "logfmt parser returns no empty metrics",
measurement: "testlog",
tagKeys: []string{"lvl"},
s: "lvl=info",
want: testutil.MustMetric(
"testlog",
map[string]string{
"lvl": "info",
},
map[string]interface{}{},
time.Unix(0, 0),
),
},
{
name: "logfmt parser returns all keys as tag",
measurement: "testlog",
tagKeys: []string{"*"},
s: "ts=2018-07-24T19:43:40.275Z lvl=info msg=\"http request\" method=POST",
want: testutil.MustMetric(
"testlog",
map[string]string{
"lvl": "info",
"msg": "http request",
"method": "POST",
"ts": "2018-07-24T19:43:40.275Z",
},
map[string]interface{}{},
time.Unix(0, 0),
),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
l := &Parser{
metricName: tt.measurement,
DefaultTags: map[string]string{},
TagKeys: tt.tagKeys,
}
require.NoError(t, l.Init())
got, err := l.ParseLine(tt.s)
if tt.wantErr {
require.Error(t, err)
} else {
require.NoError(t, err)
}
testutil.RequireMetricEqual(t, tt.want, got, testutil.IgnoreTime())
})
}
}