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// +build integration
package s3_test
import (
"bytes"
"encoding/csv"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"testing"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/s3"
)
func TestInteg_SelectObjectContent(t *testing.T) {
keyName := "selectObject.csv"
putTestFile(t, filepath.Join("testdata", "positive_select.csv"), keyName)
resp, err := svc.SelectObjectContent(&s3.SelectObjectContentInput{
Bucket: bucketName,
Key: &keyName,
Expression: aws.String("Select * from S3Object"),
ExpressionType: aws.String(s3.ExpressionTypeSql),
InputSerialization: &s3.InputSerialization{
CSV: &s3.CSVInput{
FieldDelimiter: aws.String(","),
FileHeaderInfo: aws.String(s3.FileHeaderInfoIgnore),
},
},
OutputSerialization: &s3.OutputSerialization{
CSV: &s3.CSVOutput{
FieldDelimiter: aws.String(","),
},
},
})
if err != nil {
t.Fatalf("expect no error, %v", err)
}
defer resp.EventStream.Close()
var sum int64
var processed int64
for event := range resp.EventStream.Events() {
switch tv := event.(type) {
case *s3.RecordsEvent:
sum += int64(len(tv.Payload))
case *s3.StatsEvent:
processed = *tv.Details.BytesProcessed
}
}
if sum == 0 {
t.Errorf("expect selected content, got none")
}
if processed == 0 {
t.Errorf("expect selected status bytes processed, got none")
}
if err := resp.EventStream.Err(); err != nil {
t.Fatalf("exect no error, %v", err)
}
}
func TestInteg_SelectObjectContent_Error(t *testing.T) {
keyName := "negativeSelect.csv"
buf := make([]byte, 0, 1024*1024*6)
buf = append(buf, []byte("name,number\n")...)
line := []byte("jj,0\n")
for i := 0; i < (cap(buf)/len(line))-2; i++ {
buf = append(buf, line...)
}
buf = append(buf, []byte("gg,NaN\n")...)
putTestContent(t, bytes.NewReader(buf), keyName)
resp, err := svc.SelectObjectContent(&s3.SelectObjectContentInput{
Bucket: bucketName,
Key: &keyName,
Expression: aws.String("SELECT name FROM S3Object WHERE cast(number as int) < 1"),
ExpressionType: aws.String(s3.ExpressionTypeSql),
InputSerialization: &s3.InputSerialization{
CSV: &s3.CSVInput{
FileHeaderInfo: aws.String(s3.FileHeaderInfoUse),
},
},
OutputSerialization: &s3.OutputSerialization{
CSV: &s3.CSVOutput{
FieldDelimiter: aws.String(","),
},
},
})
if err != nil {
t.Fatalf("expect no error, %v", err)
}
defer resp.EventStream.Close()
var sum int64
for event := range resp.EventStream.Events() {
switch tv := event.(type) {
case *s3.RecordsEvent:
sum += int64(len(tv.Payload))
}
}
if sum == 0 {
t.Errorf("expect selected content")
}
err = resp.EventStream.Err()
if err == nil {
t.Fatalf("exepct error")
}
aerr := err.(awserr.Error)
if a := aerr.Code(); len(a) == 0 {
t.Errorf("expect, error code")
}
if a := aerr.Message(); len(a) == 0 {
t.Errorf("expect, error message")
}
}
func TestInteg_SelectObjectContent_Stream(t *testing.T) {
keyName := "selectGopher.csv"
buf := `name,number
gopher,0
ᵷodɥǝɹ,1
`
// Put a mock CSV file to the S3 bucket so that its contents can be
// selected.
putTestContent(t, strings.NewReader(buf), keyName)
// Make the Select Object Content API request using the object uploaded.
resp, err := svc.SelectObjectContent(&s3.SelectObjectContentInput{
Bucket: bucketName,
Key: &keyName,
Expression: aws.String("SELECT name FROM S3Object WHERE cast(number as int) < 1"),
ExpressionType: aws.String(s3.ExpressionTypeSql),
InputSerialization: &s3.InputSerialization{
CSV: &s3.CSVInput{
FileHeaderInfo: aws.String(s3.FileHeaderInfoUse),
},
},
OutputSerialization: &s3.OutputSerialization{
CSV: &s3.CSVOutput{},
},
})
if err != nil {
fmt.Fprintf(os.Stderr, "failed making API request, %v\n", err)
return
}
defer resp.EventStream.Close()
results, resultWriter := io.Pipe()
go func() {
defer resultWriter.Close()
for event := range resp.EventStream.Events() {
switch e := event.(type) {
case *s3.RecordsEvent:
resultWriter.Write(e.Payload)
case *s3.StatsEvent:
fmt.Printf("Processed %d bytes\n", *e.Details.BytesProcessed)
}
}
}()
// Printout the results
resReader := csv.NewReader(results)
for {
record, err := resReader.Read()
if err == io.EOF {
break
}
fmt.Println(record)
}
if err := resp.EventStream.Err(); err != nil {
fmt.Fprintf(os.Stderr, "reading from event stream failed, %v\n", err)
}
}
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