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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you 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 io | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "io/fs" | ||
| "net/url" | ||
| "os" | ||
| "strings" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss" | ||
| "github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials" | ||
| ) | ||
|
|
||
| // Constants for OSS configuration options | ||
| const ( | ||
| OSSAccessKey = "client.oss-access-key" | ||
| OSSSecretKey = "client.oss-secret-key" | ||
| OSSEndpoint = "client.oss-endpoint" | ||
| OSSSignatureVersion = "client.oss-signature-version" | ||
| ) | ||
|
|
||
| func createOSSFileIO(parsed *url.URL, props map[string]string) (IO, error) { | ||
| endpoint, ok := props[OSSEndpoint] | ||
| if !ok { | ||
| endpoint = os.Getenv("OSS_ENDPOINT") | ||
| } | ||
| if endpoint == "" { | ||
| return nil, fmt.Errorf("oss endpoint must be specified") | ||
| } | ||
|
|
||
| accessKey := props[OSSAccessKey] | ||
| secretKey := props[OSSSecretKey] | ||
|
|
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| provider := credentials.NewStaticCredentialsProvider(accessKey, secretKey) | ||
|
|
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| cfg := oss.LoadDefaultConfig(). | ||
| WithRetryMaxAttempts(3). | ||
| WithCredentialsProvider(provider). | ||
| WithEndpoint(endpoint). | ||
| WithSignatureVersion(parseSignatureVersion(props[OSSSignatureVersion])). | ||
| WithUsePathStyle(true). | ||
| WithConnectTimeout(10 * time.Second). | ||
| WithReadWriteTimeout(time.Minute) | ||
|
|
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| client := oss.NewClient(cfg) | ||
|
|
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| ossFS := &ossFS{ | ||
| client: client, | ||
| bucket: parsed.Host, | ||
| } | ||
|
|
||
| preprocess := func(n string) string { | ||
| _, after, found := strings.Cut(n, "://") | ||
| if found { | ||
| n = after | ||
| } | ||
| return strings.TrimPrefix(n, parsed.Host) | ||
| } | ||
|
|
||
| return FSPreProcName(ossFS, preprocess), nil | ||
| } | ||
|
|
||
| // parseSignatureVersion converts string version to oss.SignatureVersionType | ||
| // "0" -> 0 (v1) | ||
| // "1" -> 1 (v4) | ||
| // defaults to 1 (v4) for unknown values | ||
| func parseSignatureVersion(version string) oss.SignatureVersionType { | ||
| switch version { | ||
| case "0": // v1 | ||
| return 0 | ||
| case "1": // v4 | ||
| return 1 | ||
| default: | ||
| return 1 | ||
| } | ||
| } | ||
|
|
||
| type ossFS struct { | ||
| client *oss.Client | ||
| bucket string | ||
| } | ||
|
|
||
| // Open implements fs.FS | ||
| func (o *ossFS) Open(name string) (fs.File, error) { | ||
| if !fs.ValidPath(name) { | ||
| return nil, &os.PathError{Op: "open", Path: name, Err: os.ErrInvalid} | ||
| } | ||
| if name == "." { | ||
| return &ossFile{ | ||
| name: name, | ||
| }, nil | ||
| } | ||
| name = strings.TrimPrefix(name, "/") | ||
|
|
||
| file, err := o.client.OpenFile(context.Background(), o.bucket, name) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &ossFile{ | ||
| file: file, | ||
| name: name, | ||
| }, nil | ||
| } | ||
|
|
||
| type ossFile struct { | ||
| mutex sync.Mutex | ||
| file *oss.ReadOnlyFile | ||
| name string | ||
| } | ||
|
|
||
| // Read implements io.Reader | ||
| func (f *ossFile) Read(p []byte) (int, error) { | ||
| f.mutex.Lock() | ||
| defer f.mutex.Unlock() | ||
|
|
||
| return f.file.Read(p) | ||
| } | ||
|
|
||
| // Seek implements io.Seeker | ||
| func (f *ossFile) Seek(offset int64, whence int) (int64, error) { | ||
| f.mutex.Lock() | ||
| defer f.mutex.Unlock() | ||
|
|
||
| return f.file.Seek(offset, whence) | ||
| } | ||
|
|
||
| // Close implements io.Closer | ||
| func (f *ossFile) Close() error { | ||
| f.mutex.Lock() | ||
| defer f.mutex.Unlock() | ||
|
|
||
| return f.file.Close() | ||
| } | ||
|
|
||
| // ReadAt implements io.ReaderAt | ||
| func (f *ossFile) ReadAt(p []byte, off int64) (n int, err error) { | ||
| f.mutex.Lock() | ||
| defer f.mutex.Unlock() | ||
|
|
||
| if _, err := f.file.Seek(off, io.SeekStart); err != nil { | ||
| return 0, err | ||
| } | ||
| return f.file.Read(p) | ||
| } | ||
|
|
||
| func (f *ossFile) Stat() (fs.FileInfo, error) { | ||
| f.mutex.Lock() | ||
| defer f.mutex.Unlock() | ||
|
|
||
| return f.file.Stat() | ||
| } |