mirror of
https://github.com/octoleo/restic.git
synced 2024-12-02 01:48:30 +00:00
113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
// Copyright 2018 Google Inc. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package storage
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
|
|
"golang.org/x/net/context"
|
|
"google.golang.org/api/option"
|
|
)
|
|
|
|
const readData = "0123456789"
|
|
|
|
func TestRangeReader(t *testing.T) {
|
|
hc, close := newTestServer(handleRangeRead)
|
|
defer close()
|
|
ctx := context.Background()
|
|
c, err := NewClient(ctx, option.WithHTTPClient(hc))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
obj := c.Bucket("b").Object("o")
|
|
for _, test := range []struct {
|
|
offset, length int64
|
|
want string
|
|
}{
|
|
{0, -1, readData},
|
|
{0, 10, readData},
|
|
{0, 5, readData[:5]},
|
|
{1, 3, readData[1:4]},
|
|
{6, -1, readData[6:]},
|
|
{4, 20, readData[4:]},
|
|
} {
|
|
r, err := obj.NewRangeReader(ctx, test.offset, test.length)
|
|
if err != nil {
|
|
t.Errorf("%d/%d: %v", test.offset, test.length, err)
|
|
continue
|
|
}
|
|
gotb, err := ioutil.ReadAll(r)
|
|
if err != nil {
|
|
t.Errorf("%d/%d: %v", test.offset, test.length, err)
|
|
continue
|
|
}
|
|
if got := string(gotb); got != test.want {
|
|
t.Errorf("%d/%d: got %q, want %q", test.offset, test.length, got, test.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func handleRangeRead(w http.ResponseWriter, r *http.Request) {
|
|
rh := strings.TrimSpace(r.Header.Get("Range"))
|
|
data := readData
|
|
var from, to int
|
|
if rh == "" {
|
|
from = 0
|
|
to = len(data)
|
|
} else {
|
|
// assume "bytes=N-" or "bytes=N-M"
|
|
var err error
|
|
i := strings.IndexRune(rh, '=')
|
|
j := strings.IndexRune(rh, '-')
|
|
from, err = strconv.Atoi(rh[i+1 : j])
|
|
if err != nil {
|
|
w.WriteHeader(500)
|
|
return
|
|
}
|
|
to = len(data)
|
|
if j+1 < len(rh) {
|
|
to, err = strconv.Atoi(rh[j+1:])
|
|
if err != nil {
|
|
w.WriteHeader(500)
|
|
return
|
|
}
|
|
to++ // Range header is inclusive, Go slice is exclusive
|
|
}
|
|
if from >= len(data) && to != from {
|
|
w.WriteHeader(416)
|
|
return
|
|
}
|
|
if from > len(data) {
|
|
from = len(data)
|
|
}
|
|
if to > len(data) {
|
|
to = len(data)
|
|
}
|
|
}
|
|
data = data[from:to]
|
|
if data != readData {
|
|
w.Header().Set("Content-Range", fmt.Sprintf("bytes %d-%d/%d", from, to-1, len(readData)))
|
|
w.WriteHeader(http.StatusPartialContent)
|
|
}
|
|
if _, err := w.Write([]byte(data)); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|