NoCredentialproviders in AWS S3 in Golang - amazon-web-services

Question

I am working in Golang,now I am attempting to upload an image to AWS S3, but I get:
NoCredentialProviders: no valid providers in chain. Deprecated.
For verbose messaging see aws.Config.CredentialsChainVerboseErrors
My code is like this:
func firstFunction(){
//Connect to S3
AWSsession, err := ConnectAWS()
if err != nil {
fmt.Println("Error Connecting to AWS S3")
}
GetSingleMedia(AWSsession)
}
func ConnectAWS()(*session.Session, error){
//Create S3 Session
AWSsession, err := session.NewSession(&aws.Config{
Region: aws.String("us-west-2")},
)
if err != nil {
fmt.Println("Error AWS:", err.Error())
}
return AWSsession,err
}
func GetSingleMedia(...someparams,AWSsession *session.Session){
//o.Blob is correct, this is valid
data, err := ioutil.ReadAll(bytes.NewReader(o.Blob))
//Store: bytes.NewReader(o.Blob)
UploadImage(AWSsession,bytes.NewReader(o.Blob),bucket,"SomeID")
}
func UploadImage(AWSsession *session.Session,reader *bytes.Reader,bucket string, key string) (*s3manager.UploadOutput,error){
uploader := s3manager.NewUploader(AWSsession)
result, err := uploader.Upload(&s3manager.UploadInput{
Body : reader,
Bucket: aws.String(bucket),
Key : aws.String(key),
})
if err != nil {
fmt.Println("Error uploagin img: ",err.Error())
}
return result,err
}
Also, I have placed the creentials under /home/myuser/.aws/ there's a credential file, I don't get any error on creating the session, then, what could be the problem?
The error is triggered in UploadImage
EDIT:
Currently in the credentials file I have:
[default]
awsBucket = "someBucket"
awsAccessKey = "SOME_ACCESS_KEY"
awsSecretKey = "SOME_AWS_SECRET_KEY"
Sould I change any permission or something?

Answer 1

I would suggest you follow the guide here: http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
This command will ask you for access/secret key and write them in a correct format:
aws configure
It would appear you have a wrong format of credentials file. The correct format would be something like this:
[default]
aws_access_key_id = SOME_ACCESS_KEY
aws_secret_access_key = SOME_AWS_SECRET_KEY