seafile_recovery/s3_walker.go

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package main
import (
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"context"
"log"
"mime"
"net/url"
"path/filepath"
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"strings"
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"github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/credentials"
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)
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type S3Walker struct {
ctx context.Context
config *configCollect
mc *minio.Client
bucket string
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pathPrefix string
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}
func NewS3Walker(config *configCollect) *S3Walker {
sw := new(S3Walker)
sw.ctx = context.Background()
sw.config = config
u, err := url.Parse(config.Dest)
if err != nil {
log.Fatal(err)
}
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if u.Scheme != "s3" { log.Fatal("URL must be of the following form: s3://ACCESS_KEY:SECRET_KEY@ENDPOINT/REGION/BUCKET[/PREFIX") }
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accessKeyID := u.User.Username()
secretAccessKey, _ := u.User.Password()
endpoint := u.Host
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splittedPath := strings.SplitN(u.Path, "/", 4)
if len(splittedPath) < 3 {
log.Fatal("Bucket or region not found")
}
region := splittedPath[1]
sw.bucket = splittedPath[2]
if len(splittedPath) > 3 {
sw.pathPrefix = splittedPath[3]
}
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useSSL := true
// Initialize minio client object.
sw.mc, err = minio.New(endpoint, &minio.Options{
Creds: credentials.NewStaticV4(accessKeyID, secretAccessKey, ""),
Secure: useSSL,
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Region: region,
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})
if err != nil {
log.Fatal(err)
}
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//sw.mc.TraceOn(nil)
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return sw
}
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func (sw* S3Walker) onDir(dn *DirNode) {
}
func (sw* S3Walker) onFile(fn *FileNode) {
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fn.Parse()
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p := filepath.Join(sw.pathPrefix, fn.AbsolutePath)[1:]
contentType := mime.TypeByExtension(filepath.Ext(p))
info, err := sw.mc.PutObject(sw.ctx, sw.bucket, p, fn, int64(fn.Elem.FileSize), minio.PutObjectOptions{ ContentType: contentType })
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if err != nil {
log.Fatalln(err)
} else if info.Size != int64(fn.Elem.FileSize) {
log.Fatal("Uploaded",info.Size,"bytes but expected", fn.Elem.FileSize,"bytes")
}
log.Println(fn.String())
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}
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func (sw* S3Walker) onDelete() {
opts := minio.RemoveObjectOptions {}
err := sw.mc.RemoveObject(context.Background(), sw.bucket, sw.pathPrefix, opts)
if err != nil {
log.Fatal(err)
}
log.Println(sw.pathPrefix)
}