func s3client() *s3.S3 {
if client == nil {
var creds *credentials.Credentials
if awsAccessKeyID == "" && awsSecretAccessKey == "" {
client = s3.New(session.New(), EC2RoleAwsConfig())
} else {
creds = credentials.NewStaticCredentials(awsAccessKeyID, awsSecretAccessKey, awsSessionToken)
if _, err := creds.Get(); err == nil {
client = s3.New(session.New(), &aws.Config{
Region: &awsRegion,
Credentials: creds,
})
}
}
}
return client
}
// Write will create sitemap xml file into the s3.
func (adp *S3Adapter) Write(loc *Location, data []byte) {
var reader io.Reader = bytes.NewReader(data)
if GzipPtn.MatchString(loc.Filename()) {
var writer *io.PipeWriter
reader, writer = io.Pipe()
go func() {
gz := gzip.NewWriter(writer)
io.Copy(gz, bytes.NewReader(data))
gz.Close()
writer.Close()
}()
}
var creds *credentials.Credentials
if adp.Credentials == nil {
creds = credentials.NewEnvCredentials()
} else {
creds = adp.Credentials
}
creds.Get()
sess := session.New(&aws.Config{
Credentials: creds, Region: &adp.Region})
uploader := s3manager.NewUploader(sess)
_, err := uploader.Upload(&s3manager.UploadInput{
Bucket: aws.String(adp.Bucket),
Key: aws.String(loc.PathInPublic()),
ACL: aws.String(adp.ACL),
Body: reader,
})
if err != nil {
log.Fatal("[F] S3 Upload file Error:", err)
}
}
// GetAWSCreds returns the appropriate value as the need arises.
//
// evaluated in the following order
// 1. input variable
// 2. Environment variable
// 3. IAM Role
//
// "/.aws/credentials" necessary item increased about that, so it isn't used.
func (c *Config) GetAWSCreds() (*credentials.Credentials, error) {
var creds *credentials.Credentials
var err error
err = nil
// 1. input variable used
if c.Aws.Accesskey != "" && c.Aws.SecretKey != "" {
creds = credentials.NewStaticCredentials(c.Aws.Accesskey, c.Aws.SecretKey, "")
creds.Expire()
_, err = creds.Get()
}
if err != nil {
// 2. Environment variable used
creds = credentials.NewEnvCredentials()
creds.Expire()
_, err = creds.Get()
if err != nil {
// 3. IAM Role used
creds = credentials.NewCredentials(&ec2rolecreds.EC2RoleProvider{})
creds.Expire()
_, err = creds.Get()
}
}
return creds, err
}