1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
package fetcher
import (
"context"
"fmt"
"log/slog"
"net/url"
"searchix/internal/config"
"searchix/internal/index"
"github.com/pkg/errors"
)
type DownloadFetcher struct {
Source *config.Source
SourceFile string
Logger *slog.Logger
}
func NewDownloadFetcher(
source *config.Source,
logger *slog.Logger,
) (*DownloadFetcher, error) {
switch source.Importer {
case config.Options:
return &DownloadFetcher{
Source: source,
Logger: logger,
}, nil
default:
return nil, fmt.Errorf("unsupported importer type %s", source.Importer)
}
}
var files = map[string]string{
"revision": "revision",
"options": "options.json",
}
func (i *DownloadFetcher) FetchIfNeeded(
ctx context.Context,
sourceMeta *index.SourceMeta,
) (f FetchedFiles, err error) {
var fetchURL string
for key, filename := range files {
fetchURL, err = url.JoinPath(i.Source.URL, filename)
if err != nil {
err = errors.WithMessagef(
err,
"could not build URL with elements %s and %s",
i.Source.URL,
filename,
)
return
}
i.Logger.Debug("preparing to fetch URL", "url", fetchURL)
body, mtime, err := fetchFileIfNeeded(ctx, sourceMeta.Updated, fetchURL)
if err != nil {
i.Logger.Warn("failed to fetch file", "url", fetchURL, "error", err)
return f, err
}
// don't bother to issue requests for the later files
if mtime.Before(sourceMeta.Updated) {
break
}
sourceMeta.Updated = mtime
switch key {
case "revision":
f.Revision = body
case "options":
f.Options = body
default:
return f, errors.Errorf("unknown file kind %s", key)
}
}
return
}
|