/
upload.go
210 lines (185 loc) · 4.4 KB
/
upload.go
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package pkg
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/google/uuid"
"io"
"os"
"path/filepath"
"time"
)
type BucketSettings struct {
// The AWS region that the bucket is in.
Region string
Bucket string
Credentials *Credentials
}
func (us *BucketSettings) CreateSession() (*session.Session, error) {
sess, err := session.NewSession(&aws.Config{
Credentials: credentials.NewStaticCredentials(
us.Credentials.AccessKeyID,
us.Credentials.SecretAccessKey,
us.Credentials.SessionToken),
Region: aws.String(us.Region),
})
return sess, err
}
type UploadData struct {
Files []string
Comment string
Metadata map[string]interface{}
}
type ProgressEvent struct {
StepProgress float64
Step string
IsError bool
}
type WriterWithProgress struct {
writer io.WriterAt
progressCh chan ProgressEvent
totalBytes int64
written int64
stepName string
}
func (w *WriterWithProgress) WriteAt(p []byte, off int64) (int, error) {
n, err := w.writer.WriteAt(p, off)
if err != nil {
w.progressCh <- ProgressEvent{
StepProgress: float64(w.written) / float64(w.totalBytes),
Step: w.stepName,
IsError: true,
}
return n, err
}
w.written += int64(n)
w.progressCh <- ProgressEvent{
StepProgress: float64(w.written) / float64(w.totalBytes),
Step: w.stepName,
}
return n, nil
}
func NewWriterWithProgress(
writer io.WriterAt,
progressCh chan ProgressEvent,
totalBytes int64,
stepName string,
) *WriterWithProgress {
return &WriterWithProgress{
writer: writer,
progressCh: progressCh,
totalBytes: totalBytes,
written: 0,
stepName: stepName,
}
}
type ReaderWithProgress struct {
reader io.ReadSeeker
progressCh chan ProgressEvent
stepName string
totalBytes int64
readBytes int64
}
func (r *ReaderWithProgress) Seek(offset int64, whence int) (int64, error) {
switch whence {
case io.SeekStart:
r.readBytes = offset
case io.SeekCurrent:
r.readBytes += offset
case io.SeekEnd:
r.readBytes = r.totalBytes + offset
}
return r.reader.Seek(offset, whence)
}
func NewReaderWithProgress(
reader io.ReadSeeker,
progressCh chan ProgressEvent,
totalBytes int64,
stepName string,
) *ReaderWithProgress {
return &ReaderWithProgress{
reader: reader,
progressCh: progressCh,
totalBytes: totalBytes,
readBytes: 0,
stepName: stepName,
}
}
func (r ReaderWithProgress) Read(p []byte) (int, error) {
n, err := r.reader.Read(p)
if err != nil {
r.progressCh <- ProgressEvent{
StepProgress: float64(r.readBytes) / float64(r.totalBytes),
Step: r.stepName,
IsError: true,
}
return n, err
}
r.readBytes += int64(n)
r.progressCh <- ProgressEvent{
StepProgress: float64(r.readBytes) / float64(r.totalBytes),
Step: r.stepName,
}
return n, err
}
func UploadLogs(ctx context.Context, settings *BucketSettings, data *UploadData, progressCh chan ProgressEvent) error {
// Set up a new AWS session using the temporary AWS credentials.
sess, err := settings.CreateSession()
if err != nil {
return err
}
// generate unique key: YYYY-MM-DD--HH-MM-SS--UUID
baseKey := fmt.Sprintf(
"%s/%s",
time.Now().Format("2006-01-02/15-04-05"),
uuid.New().String())
// Create a new S3 pkg.
s3Client := s3.New(sess)
s3Metadata := make(map[string]*string)
for key, value := range data.Metadata {
s3Metadata[key] = aws.String(fmt.Sprintf("%v", value))
}
s3Metadata["Comment"] = aws.String(data.Comment)
for i, file := range data.Files {
err := func() error {
fp, err := os.Open(file)
if err != nil {
return err
}
defer fp.Close()
fileSize, err := fp.Stat()
if err != nil {
return err
}
baseName := filepath.Base(file)
// Open the file.
fileReader := NewReaderWithProgress(
fp,
progressCh,
fileSize.Size(),
fmt.Sprintf("%d/%d Uploading %s", i+1, len(data.Files), baseName),
)
// Upload the file to S3.
_, err = s3Client.PutObjectWithContext(
ctx,
&s3.PutObjectInput{
Bucket: aws.String(settings.Bucket),
Key: aws.String(baseKey + "/" + baseName),
Body: fileReader,
Metadata: s3Metadata,
})
if err != nil {
return err
}
return nil
}()
if err != nil {
return err
}
}
fmt.Println("Successfully uploaded file to S3")
return nil
}