telegraf/plugins/parsers/csv/parser_test.go

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package csv
import (
"fmt"
"testing"
"time"
"github.com/influxdata/telegraf/metric"
"github.com/influxdata/telegraf/testutil"
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"github.com/stretchr/testify/require"
)
var DefaultTime = func() time.Time {
return time.Unix(3600, 0)
}
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func TestBasicCSV(t *testing.T) {
p := Parser{
ColumnNames: []string{"first", "second", "third"},
TagColumns: []string{"third"},
TimeFunc: DefaultTime,
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}
_, err := p.ParseLine("1.4,true,hi")
require.NoError(t, err)
}
func TestHeaderConcatenationCSV(t *testing.T) {
p := Parser{
HeaderRowCount: 2,
MeasurementColumn: "3",
TimeFunc: DefaultTime,
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}
testCSV := `first,second
1,2,3
3.4,70,test_name`
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, "test_name", metrics[0].Name())
}
func TestHeaderOverride(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
ColumnNames: []string{"first", "second", "third"},
MeasurementColumn: "third",
TimeFunc: DefaultTime,
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}
testCSV := `line1,line2,line3
3.4,70,test_name`
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, "test_name", metrics[0].Name())
}
func TestTimestamp(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
ColumnNames: []string{"first", "second", "third"},
MeasurementColumn: "third",
TimestampColumn: "first",
TimestampFormat: "02/01/06 03:04:05 PM",
TimeFunc: DefaultTime,
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}
testCSV := `line1,line2,line3
23/05/09 04:05:06 PM,70,test_name
07/11/09 04:05:06 PM,80,test_name2`
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, metrics[0].Time().UnixNano(), int64(1243094706000000000))
require.Equal(t, metrics[1].Time().UnixNano(), int64(1257609906000000000))
}
func TestTimestampError(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
ColumnNames: []string{"first", "second", "third"},
MeasurementColumn: "third",
TimestampColumn: "first",
TimeFunc: DefaultTime,
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}
testCSV := `line1,line2,line3
23/05/09 04:05:06 PM,70,test_name
07/11/09 04:05:06 PM,80,test_name2`
_, err := p.Parse([]byte(testCSV))
require.Equal(t, fmt.Errorf("timestamp format must be specified"), err)
}
func TestQuotedCharacter(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
ColumnNames: []string{"first", "second", "third"},
MeasurementColumn: "third",
TimeFunc: DefaultTime,
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}
testCSV := `line1,line2,line3
"3,4",70,test_name`
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, "3,4", metrics[0].Fields()["first"])
}
func TestDelimiter(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
Delimiter: "%",
ColumnNames: []string{"first", "second", "third"},
MeasurementColumn: "third",
TimeFunc: DefaultTime,
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}
testCSV := `line1%line2%line3
3,4%70%test_name`
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, "3,4", metrics[0].Fields()["first"])
}
func TestValueConversion(t *testing.T) {
p := Parser{
HeaderRowCount: 0,
Delimiter: ",",
ColumnNames: []string{"first", "second", "third", "fourth"},
MetricName: "test_value",
TimeFunc: DefaultTime,
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}
testCSV := `3.3,4,true,hello`
expectedTags := make(map[string]string)
expectedFields := map[string]interface{}{
"first": 3.3,
"second": 4,
"third": true,
"fourth": "hello",
}
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
expectedMetric, err1 := metric.New("test_value", expectedTags, expectedFields, time.Unix(0, 0))
returnedMetric, err2 := metric.New(metrics[0].Name(), metrics[0].Tags(), metrics[0].Fields(), time.Unix(0, 0))
require.NoError(t, err1)
require.NoError(t, err2)
//deep equal fields
require.Equal(t, expectedMetric.Fields(), returnedMetric.Fields())
}
func TestSkipComment(t *testing.T) {
p := Parser{
HeaderRowCount: 0,
Comment: "#",
ColumnNames: []string{"first", "second", "third", "fourth"},
MetricName: "test_value",
TimeFunc: DefaultTime,
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}
testCSV := `#3.3,4,true,hello
4,9.9,true,name_this`
expectedFields := map[string]interface{}{
"first": int64(4),
"second": 9.9,
"third": true,
"fourth": "name_this",
}
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, expectedFields, metrics[0].Fields())
}
func TestTrimSpace(t *testing.T) {
p := Parser{
HeaderRowCount: 0,
TrimSpace: true,
ColumnNames: []string{"first", "second", "third", "fourth"},
MetricName: "test_value",
TimeFunc: DefaultTime,
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}
testCSV := ` 3.3, 4, true,hello`
expectedFields := map[string]interface{}{
"first": 3.3,
"second": int64(4),
"third": true,
"fourth": "hello",
}
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, expectedFields, metrics[0].Fields())
}
func TestSkipRows(t *testing.T) {
p := Parser{
HeaderRowCount: 1,
SkipRows: 1,
TagColumns: []string{"line1"},
MeasurementColumn: "line3",
TimeFunc: DefaultTime,
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}
testCSV := `garbage nonsense
line1,line2,line3
hello,80,test_name2`
expectedFields := map[string]interface{}{
"line2": int64(80),
"line3": "test_name2",
}
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, expectedFields, metrics[0].Fields())
}
func TestSkipColumns(t *testing.T) {
p := Parser{
SkipColumns: 1,
ColumnNames: []string{"line1", "line2"},
TimeFunc: DefaultTime,
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}
testCSV := `hello,80,test_name`
expectedFields := map[string]interface{}{
"line1": int64(80),
"line2": "test_name",
}
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, expectedFields, metrics[0].Fields())
}
func TestSkipColumnsWithHeader(t *testing.T) {
p := Parser{
SkipColumns: 1,
HeaderRowCount: 2,
TimeFunc: DefaultTime,
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}
testCSV := `col,col,col
1,2,3
trash,80,test_name`
// we should expect an error if we try to get col1
metrics, err := p.Parse([]byte(testCSV))
require.NoError(t, err)
require.Equal(t, map[string]interface{}{"col2": int64(80), "col3": "test_name"}, metrics[0].Fields())
}
func TestParseStream(t *testing.T) {
p := Parser{
MetricName: "csv",
HeaderRowCount: 1,
TimeFunc: DefaultTime,
}
csvHeader := "a,b,c"
csvBody := "1,2,3"
metrics, err := p.Parse([]byte(csvHeader))
require.NoError(t, err)
require.Len(t, metrics, 0)
metric, err := p.ParseLine(csvBody)
testutil.RequireMetricEqual(t,
testutil.MustMetric(
"csv",
map[string]string{},
map[string]interface{}{
"a": int64(1),
"b": int64(2),
"c": int64(3),
},
DefaultTime(),
), metric)
}