/
s3.go
121 lines (108 loc) · 2.73 KB
/
s3.go
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package aws_s3
import (
"bytes"
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"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/lwzphper/go-mall/pkg/logger"
"github.com/pkg/errors"
"io/ioutil"
)
type Service struct {
Client *s3.S3
EndPoint string
Region string
}
const DefaultClientName = "default-s3-client"
var clients map[string]*Service
var log *logger.Logger
func init() {
log = logger.NewDefaultLogger()
}
// InitService 初始化客户端
func InitService(clientID, sk, token, region, point string) error {
credential := credentials.NewStaticCredentials(clientID, sk, token)
cfg := aws.NewConfig().WithCredentials(credential).WithRegion(region).
WithEndpoint(point).WithS3ForcePathStyle(true).WithDisableSSL(true)
sess, err := session.NewSession(cfg)
if err != nil {
return err
}
if len(clients) == 0 {
clients = make(map[string]*Service, 0)
}
clients[clientID] = &Service{
Client: s3.New(sess),
EndPoint: point,
Region: region,
}
return nil
}
// GetS3Client 获取客户端
func GetS3Client(clientName string) (*Service, error) {
if service, ok := clients[clientName]; ok {
return service, nil
}
return nil, errors.New(fmt.Sprintf("client %s has not initial", clientName))
}
// GetObj 获取对象
func (s *Service) GetObj(key, bucket string) ([]byte, error) {
inputObject := &s3.GetObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(key),
}
out, err := s.Client.GetObject(inputObject)
if err != nil && !IsNotFoundErr(err) {
return nil, err
}
if out.Body != nil {
res, err := ioutil.ReadAll(out.Body)
_ = out.Body.Close()
if err != nil {
return nil, err
}
return res, nil
}
err = awserr.New(s3.ErrCodeNoSuchKey, "empty body", nil)
return nil, err
}
// PutObj 添加对象
func (s *Service) PutObj(key, bucket string, data []byte) error {
inputObject := &s3.PutObjectInput{
Bucket: aws.String(bucket),
Key: aws.String(key),
ContentType: aws.String("application/octet-stream"),
Body: bytes.NewReader(data),
}
out, err := s.Client.PutObject(inputObject)
if err != nil {
outStr := ""
if out != nil {
outStr = out.String()
}
log.Errorf("PutS3Object error:%s outStr:%s", err, outStr)
return err
}
return nil
}
// PutFile 上传文件
func (s *Service) PutFile(key, bucket, fileName string) error {
content, err := ioutil.ReadFile(fileName)
if err != nil {
return err
}
return s.PutObj(key, bucket, content)
}
// IsNotFoundErr 判断资源是否不存在
func IsNotFoundErr(err error) bool {
if aswErr, ok := err.(awserr.Error); ok {
switch aswErr.Code() {
case s3.ErrCodeNoSuchKey:
return true
}
}
return false
}