func main() {
log.SetFlags(0) // hide timestamps from Go logs
parseFlags()
resultBucketName = os.Getenv("RESULT_STORAGE_BUCKET")
if resultBucketName != "" {
keys, err := s3gof3r.EnvKeys()
if err != nil {
log.Fatal(err)
}
resultBucket = s3gof3r.New(s3gof3r.DefaultDomain, keys).Bucket(resultBucketName)
resultBucket.Concurrency = 4
resultBucket.PartSize = int64(2 * MB)
resultBucket.Md5Check = false
httpClient = resultBucket.Client
if rrs := os.Getenv("USE_RRS"); rrs == "true" || rrs == "1" {
useRRS = true
}
}
router := httprouter.New()
router.HEAD("/:signature/:size/*source", handleResize)
router.GET("/:signature/:size/*source", handleResize)
log.Fatal(http.ListenAndServe(listenInterface, router))
}
// getAWSKeys gets the AWS Keys from environment variables or the instance-based metadata on EC2
// Environment variables are attempted first, followed by the instance-based credentials.
func getAWSKeys() (keys s3gof3r.Keys, err error) {
keys, err = s3gof3r.EnvKeys()
if err == nil {
return
}
keys, err = s3gof3r.InstanceKeys()
if err == nil {
return
}
err = errors.New("no AWS keys found")
return
}