/
generate_presigned_url.go
47 lines (40 loc) · 1.15 KB
/
generate_presigned_url.go
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package s3manager
import (
"encoding/json"
"fmt"
"net/http"
"net/url"
"strconv"
"time"
"github.com/gorilla/mux"
)
func HandleGenerateUrl(s3 S3) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
bucketName := mux.Vars(r)["bucketName"]
objectName := mux.Vars(r)["objectName"]
expiry := r.URL.Query().Get("expiry")
parsedExpiry, err := strconv.ParseInt(expiry, 10, 0)
if err != nil {
handleHTTPError(w, fmt.Errorf("error when converting expiry: %w", err))
return
}
if parsedExpiry > 7*24*60*60 || parsedExpiry < 1 {
handleHTTPError(w, fmt.Errorf("invalid expiry value: %v", parsedExpiry))
return
}
expirySecond := time.Duration(parsedExpiry * 1e9)
reqParams := make(url.Values)
url, err := s3.PresignedGetObject(r.Context(), bucketName, objectName, expirySecond, reqParams)
if err != nil {
handleHTTPError(w, fmt.Errorf("error when generate url: %w", err))
return
}
encoder := json.NewEncoder(w)
encoder.SetEscapeHTML(false)
err = encoder.Encode(map[string]string{"url": url.String()})
if err != nil {
handleHTTPError(w, fmt.Errorf("error encoding JSON: %w", err))
return
}
}
}