/
s3-signed-url.go
68 lines (58 loc) · 1.42 KB
/
s3-signed-url.go
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package main
import (
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/s3"
"fmt"
"flag"
"time"
"os"
"io"
)
func main() {
bucket := flag.String("bucket", "", "bucket")
key := flag.String("key", "", "key")
region := flag.String("region", "us-east-1", "region")
timing := flag.Bool("t", false, "show timing")
mode := flag.String("mode", "sign", "sign or cat")
flag.Parse()
if *bucket == "" || *key == "" {
fmt.Printf("bucket and key are required\n")
flag.PrintDefaults()
os.Exit(1)
}
s3c := s3.New(session.New(&aws.Config{
Region: aws.String(*region),
}))
input := &s3.GetObjectInput{
Bucket: aws.String(*bucket),
Key: aws.String(*key),
}
switch *mode {
case "cat":
result, err := s3c.GetObject(input)
if err != nil {
if aerr, ok := err.(awserr.Error); ok {
switch aerr.Code() {
case s3.ErrCodeNoSuchKey:
fmt.Println(s3.ErrCodeNoSuchKey, aerr.Error())
default:
fmt.Println(aerr.Error())
}
} else {
// Print the error, cast err to awserr.Error to get the Code and
// Message from an error.
fmt.Println(err.Error())
}
panic(err)
}
before := time.Now()
io.Copy(os.Stdout, result.Body)
if *timing {
fmt.Fprintf(os.Stderr, "done %s/%s in %v\n", *bucket, *key, time.Now().Sub(before))
}
default:
panic(fmt.Sprintf("invalid mode: %s", *mode))
}
}