init
This commit is contained in:
117
pkg/filesystem/driver/oss/callback.go
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117
pkg/filesystem/driver/oss/callback.go
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@ -0,0 +1,117 @@
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package oss
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import (
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"bytes"
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"crypto"
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"crypto/md5"
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"crypto/rsa"
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"crypto/x509"
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"encoding/base64"
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"encoding/pem"
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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"github.com/cloudreve/Cloudreve/v3/pkg/cache"
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"github.com/cloudreve/Cloudreve/v3/pkg/request"
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)
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// GetPublicKey 从回调请求或缓存中获取OSS的回调签名公钥
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func GetPublicKey(r *http.Request) ([]byte, error) {
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var pubKey []byte
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// 尝试从缓存中获取
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pub, exist := cache.Get("oss_public_key")
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if exist {
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return pub.([]byte), nil
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}
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// 从请求中获取
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pubURL, err := base64.StdEncoding.DecodeString(r.Header.Get("x-oss-pub-key-url"))
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if err != nil {
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return pubKey, err
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}
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// 确保这个 public key 是由 OSS 颁发的
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if !strings.HasPrefix(string(pubURL), "http://gosspublic.alicdn.com/") &&
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!strings.HasPrefix(string(pubURL), "https://gosspublic.alicdn.com/") {
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return pubKey, errors.New("public key url invalid")
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}
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// 获取公钥
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client := request.NewClient()
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body, err := client.Request("GET", string(pubURL), nil).
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CheckHTTPResponse(200).
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GetResponse()
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if err != nil {
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return pubKey, err
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}
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// 写入缓存
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_ = cache.Set("oss_public_key", []byte(body), 86400*7)
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return []byte(body), nil
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}
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func getRequestMD5(r *http.Request) ([]byte, error) {
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var byteMD5 []byte
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// 获取请求正文
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body, err := ioutil.ReadAll(r.Body)
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r.Body.Close()
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if err != nil {
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return byteMD5, err
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}
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r.Body = ioutil.NopCloser(bytes.NewReader(body))
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strURLPathDecode, err := url.PathUnescape(r.URL.Path)
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if err != nil {
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return byteMD5, err
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}
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strAuth := fmt.Sprintf("%s\n%s", strURLPathDecode, string(body))
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md5Ctx := md5.New()
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md5Ctx.Write([]byte(strAuth))
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byteMD5 = md5Ctx.Sum(nil)
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return byteMD5, nil
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}
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// VerifyCallbackSignature 验证OSS回调请求
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func VerifyCallbackSignature(r *http.Request) error {
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bytePublicKey, err := GetPublicKey(r)
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if err != nil {
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return err
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}
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byteMD5, err := getRequestMD5(r)
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if err != nil {
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return err
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}
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strAuthorizationBase64 := r.Header.Get("authorization")
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if strAuthorizationBase64 == "" {
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return errors.New("no authorization field in Request header")
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}
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authorization, _ := base64.StdEncoding.DecodeString(strAuthorizationBase64)
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pubBlock, _ := pem.Decode(bytePublicKey)
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if pubBlock == nil {
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return errors.New("pubBlock not exist")
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}
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pubInterface, err := x509.ParsePKIXPublicKey(pubBlock.Bytes)
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if (pubInterface == nil) || (err != nil) {
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return err
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}
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pub := pubInterface.(*rsa.PublicKey)
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errorVerifyPKCS1v15 := rsa.VerifyPKCS1v15(pub, crypto.MD5, byteMD5, authorization)
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if errorVerifyPKCS1v15 != nil {
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return errorVerifyPKCS1v15
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}
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return nil
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}
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501
pkg/filesystem/driver/oss/handler.go
Normal file
501
pkg/filesystem/driver/oss/handler.go
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@ -0,0 +1,501 @@
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package oss
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import (
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"context"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/url"
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"path"
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"path/filepath"
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"strings"
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"time"
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"github.com/HFO4/aliyun-oss-go-sdk/oss"
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model "github.com/cloudreve/Cloudreve/v3/models"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/chunk"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/chunk/backoff"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/driver"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx"
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"github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response"
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"github.com/cloudreve/Cloudreve/v3/pkg/request"
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"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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)
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// UploadPolicy 阿里云OSS上传策略
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type UploadPolicy struct {
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Expiration string `json:"expiration"`
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Conditions []interface{} `json:"conditions"`
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}
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// CallbackPolicy 回调策略
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type CallbackPolicy struct {
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CallbackURL string `json:"callbackUrl"`
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CallbackBody string `json:"callbackBody"`
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CallbackBodyType string `json:"callbackBodyType"`
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}
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// Driver 阿里云OSS策略适配器
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type Driver struct {
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Policy *model.Policy
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client *oss.Client
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bucket *oss.Bucket
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HTTPClient request.Client
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}
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type key int
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const (
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chunkRetrySleep = time.Duration(5) * time.Second
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// MultiPartUploadThreshold 服务端使用分片上传的阈值
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MultiPartUploadThreshold uint64 = 5 * (1 << 30) // 5GB
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// VersionID 文件版本标识
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VersionID key = iota
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)
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func NewDriver(policy *model.Policy) (*Driver, error) {
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if policy.OptionsSerialized.ChunkSize == 0 {
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policy.OptionsSerialized.ChunkSize = 25 << 20 // 25 MB
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}
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driver := &Driver{
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Policy: policy,
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HTTPClient: request.NewClient(),
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}
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return driver, driver.InitOSSClient(false)
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}
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// CORS 创建跨域策略
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func (handler *Driver) CORS() error {
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return handler.client.SetBucketCORS(handler.Policy.BucketName, []oss.CORSRule{
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{
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AllowedOrigin: []string{"*"},
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AllowedMethod: []string{
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"GET",
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"POST",
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"PUT",
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"DELETE",
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"HEAD",
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},
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ExposeHeader: []string{},
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AllowedHeader: []string{"*"},
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MaxAgeSeconds: 3600,
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},
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})
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}
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// InitOSSClient 初始化OSS鉴权客户端
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func (handler *Driver) InitOSSClient(forceUsePublicEndpoint bool) error {
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if handler.Policy == nil {
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return errors.New("empty policy")
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}
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// 决定是否使用内网 Endpoint
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endpoint := handler.Policy.Server
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if handler.Policy.OptionsSerialized.ServerSideEndpoint != "" && !forceUsePublicEndpoint {
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endpoint = handler.Policy.OptionsSerialized.ServerSideEndpoint
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}
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// 初始化客户端
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client, err := oss.New(endpoint, handler.Policy.AccessKey, handler.Policy.SecretKey)
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if err != nil {
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return err
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}
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handler.client = client
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// 初始化存储桶
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bucket, err := client.Bucket(handler.Policy.BucketName)
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if err != nil {
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return err
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}
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handler.bucket = bucket
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return nil
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}
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// List 列出OSS上的文件
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func (handler *Driver) List(ctx context.Context, base string, recursive bool) ([]response.Object, error) {
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// 列取文件
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base = strings.TrimPrefix(base, "/")
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if base != "" {
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base += "/"
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}
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var (
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delimiter string
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marker string
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objects []oss.ObjectProperties
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commons []string
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)
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if !recursive {
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delimiter = "/"
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}
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for {
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subRes, err := handler.bucket.ListObjects(oss.Marker(marker), oss.Prefix(base),
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oss.MaxKeys(1000), oss.Delimiter(delimiter))
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if err != nil {
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return nil, err
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}
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objects = append(objects, subRes.Objects...)
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commons = append(commons, subRes.CommonPrefixes...)
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marker = subRes.NextMarker
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if marker == "" {
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break
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}
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}
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// 处理列取结果
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res := make([]response.Object, 0, len(objects)+len(commons))
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// 处理目录
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for _, object := range commons {
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rel, err := filepath.Rel(base, object)
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if err != nil {
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continue
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}
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res = append(res, response.Object{
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Name: path.Base(object),
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RelativePath: filepath.ToSlash(rel),
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Size: 0,
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IsDir: true,
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LastModify: time.Now(),
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})
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}
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// 处理文件
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for _, object := range objects {
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rel, err := filepath.Rel(base, object.Key)
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if err != nil {
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continue
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}
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if strings.HasSuffix(object.Key, "/") {
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res = append(res, response.Object{
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Name: path.Base(object.Key),
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RelativePath: filepath.ToSlash(rel),
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Size: 0,
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IsDir: true,
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LastModify: time.Now(),
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})
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} else {
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res = append(res, response.Object{
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Name: path.Base(object.Key),
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Source: object.Key,
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RelativePath: filepath.ToSlash(rel),
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Size: uint64(object.Size),
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IsDir: false,
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LastModify: object.LastModified,
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})
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}
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}
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return res, nil
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}
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// Get 获取文件
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func (handler *Driver) Get(ctx context.Context, path string) (response.RSCloser, error) {
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// 通过VersionID禁止缓存
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ctx = context.WithValue(ctx, VersionID, time.Now().UnixNano())
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// 尽可能使用私有 Endpoint
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ctx = context.WithValue(ctx, fsctx.ForceUsePublicEndpointCtx, false)
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// 获取文件源地址
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downloadURL, err := handler.Source(ctx, path, int64(model.GetIntSetting("preview_timeout", 60)), false, 0)
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if err != nil {
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return nil, err
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}
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// 获取文件数据流
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resp, err := handler.HTTPClient.Request(
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"GET",
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downloadURL,
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nil,
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request.WithContext(ctx),
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request.WithTimeout(time.Duration(0)),
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).CheckHTTPResponse(200).GetRSCloser()
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if err != nil {
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return nil, err
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}
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resp.SetFirstFakeChunk()
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// 尝试自主获取文件大小
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if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
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resp.SetContentLength(int64(file.Size))
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}
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return resp, nil
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}
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// Put 将文件流保存到指定目录
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func (handler *Driver) Put(ctx context.Context, file fsctx.FileHeader) error {
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defer file.Close()
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fileInfo := file.Info()
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// 凭证有效期
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credentialTTL := model.GetIntSetting("upload_session_timeout", 3600)
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// 是否允许覆盖
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overwrite := fileInfo.Mode&fsctx.Overwrite == fsctx.Overwrite
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options := []oss.Option{
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oss.Expires(time.Now().Add(time.Duration(credentialTTL) * time.Second)),
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oss.ForbidOverWrite(!overwrite),
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}
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// 小文件直接上传
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if fileInfo.Size < MultiPartUploadThreshold {
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return handler.bucket.PutObject(fileInfo.SavePath, file, options...)
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}
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|
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// 超过阈值时使用分片上传
|
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imur, err := handler.bucket.InitiateMultipartUpload(fileInfo.SavePath, options...)
|
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if err != nil {
|
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return fmt.Errorf("failed to initiate multipart upload: %w", err)
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}
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chunks := chunk.NewChunkGroup(file, handler.Policy.OptionsSerialized.ChunkSize, &backoff.ConstantBackoff{
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Max: model.GetIntSetting("chunk_retries", 5),
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Sleep: chunkRetrySleep,
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}, model.IsTrueVal(model.GetSettingByName("use_temp_chunk_buffer")))
|
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|
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uploadFunc := func(current *chunk.ChunkGroup, content io.Reader) error {
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_, err := handler.bucket.UploadPart(imur, content, current.Length(), current.Index()+1)
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return err
|
||||
}
|
||||
|
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for chunks.Next() {
|
||||
if err := chunks.Process(uploadFunc); err != nil {
|
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return fmt.Errorf("failed to upload chunk #%d: %w", chunks.Index(), err)
|
||||
}
|
||||
}
|
||||
|
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_, err = handler.bucket.CompleteMultipartUpload(imur, oss.CompleteAll("yes"), oss.ForbidOverWrite(!overwrite))
|
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return err
|
||||
}
|
||||
|
||||
// Delete 删除一个或多个文件，
|
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// 返回未删除的文件
|
||||
func (handler *Driver) Delete(ctx context.Context, files []string) ([]string, error) {
|
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// 删除文件
|
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delRes, err := handler.bucket.DeleteObjects(files)
|
||||
|
||||
if err != nil {
|
||||
return files, err
|
||||
}
|
||||
|
||||
// 统计未删除的文件
|
||||
failed := util.SliceDifference(files, delRes.DeletedObjects)
|
||||
if len(failed) > 0 {
|
||||
return failed, errors.New("failed to delete")
|
||||
}
|
||||
|
||||
return []string{}, nil
|
||||
}
|
||||
|
||||
// Thumb 获取文件缩略图
|
||||
func (handler *Driver) Thumb(ctx context.Context, file *model.File) (*response.ContentResponse, error) {
|
||||
// quick check by extension name
|
||||
// https://help.aliyun.com/document_detail/183902.html
|
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supported := []string{"png", "jpg", "jpeg", "gif", "bmp", "webp", "heic", "tiff", "avif"}
|
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if len(handler.Policy.OptionsSerialized.ThumbExts) > 0 {
|
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supported = handler.Policy.OptionsSerialized.ThumbExts
|
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}
|
||||
|
||||
if !util.IsInExtensionList(supported, file.Name) || file.Size > (20<<(10*2)) {
|
||||
return nil, driver.ErrorThumbNotSupported
|
||||
}
|
||||
|
||||
// 初始化客户端
|
||||
if err := handler.InitOSSClient(true); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var (
|
||||
thumbSize = [2]uint{400, 300}
|
||||
ok = false
|
||||
)
|
||||
if thumbSize, ok = ctx.Value(fsctx.ThumbSizeCtx).([2]uint); !ok {
|
||||
return nil, errors.New("failed to get thumbnail size")
|
||||
}
|
||||
|
||||
thumbEncodeQuality := model.GetIntSetting("thumb_encode_quality", 85)
|
||||
|
||||
thumbParam := fmt.Sprintf("image/resize,m_lfit,h_%d,w_%d/quality,q_%d", thumbSize[1], thumbSize[0], thumbEncodeQuality)
|
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ctx = context.WithValue(ctx, fsctx.ThumbSizeCtx, thumbParam)
|
||||
thumbOption := []oss.Option{oss.Process(thumbParam)}
|
||||
thumbURL, err := handler.signSourceURL(
|
||||
ctx,
|
||||
file.SourceName,
|
||||
int64(model.GetIntSetting("preview_timeout", 60)),
|
||||
thumbOption,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &response.ContentResponse{
|
||||
Redirect: true,
|
||||
URL: thumbURL,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Source 获取外链URL
|
||||
func (handler *Driver) Source(ctx context.Context, path string, ttl int64, isDownload bool, speed int) (string, error) {
|
||||
// 初始化客户端
|
||||
usePublicEndpoint := true
|
||||
if forceUsePublicEndpoint, ok := ctx.Value(fsctx.ForceUsePublicEndpointCtx).(bool); ok {
|
||||
usePublicEndpoint = forceUsePublicEndpoint
|
||||
}
|
||||
if err := handler.InitOSSClient(usePublicEndpoint); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 尝试从上下文获取文件名
|
||||
fileName := ""
|
||||
if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok {
|
||||
fileName = file.Name
|
||||
}
|
||||
|
||||
// 添加各项设置
|
||||
var signOptions = make([]oss.Option, 0, 2)
|
||||
if isDownload {
|
||||
signOptions = append(signOptions, oss.ResponseContentDisposition("attachment; filename=\""+url.PathEscape(fileName)+"\""))
|
||||
}
|
||||
if speed > 0 {
|
||||
// Byte 转换为 bit
|
||||
speed *= 8
|
||||
|
||||
// OSS对速度值有范围限制
|
||||
if speed < 819200 {
|
||||
speed = 819200
|
||||
}
|
||||
if speed > 838860800 {
|
||||
speed = 838860800
|
||||
}
|
||||
signOptions = append(signOptions, oss.TrafficLimitParam(int64(speed)))
|
||||
}
|
||||
|
||||
return handler.signSourceURL(ctx, path, ttl, signOptions)
|
||||
}
|
||||
|
||||
func (handler *Driver) signSourceURL(ctx context.Context, path string, ttl int64, options []oss.Option) (string, error) {
|
||||
signedURL, err := handler.bucket.SignURL(path, oss.HTTPGet, ttl, options...)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 将最终生成的签名URL域名换成用户自定义的加速域名（如果有）
|
||||
finalURL, err := url.Parse(signedURL)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 公有空间替换掉Key及不支持的头
|
||||
if !handler.Policy.IsPrivate {
|
||||
query := finalURL.Query()
|
||||
query.Del("OSSAccessKeyId")
|
||||
query.Del("Signature")
|
||||
query.Del("response-content-disposition")
|
||||
query.Del("x-oss-traffic-limit")
|
||||
finalURL.RawQuery = query.Encode()
|
||||
}
|
||||
|
||||
if handler.Policy.BaseURL != "" {
|
||||
cdnURL, err := url.Parse(handler.Policy.BaseURL)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
finalURL.Host = cdnURL.Host
|
||||
finalURL.Scheme = cdnURL.Scheme
|
||||
}
|
||||
|
||||
return finalURL.String(), nil
|
||||
}
|
||||
|
||||
// Token 获取上传策略和认证Token
|
||||
func (handler *Driver) Token(ctx context.Context, ttl int64, uploadSession *serializer.UploadSession, file fsctx.FileHeader) (*serializer.UploadCredential, error) {
|
||||
// 初始化客户端
|
||||
if err := handler.InitOSSClient(true); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// 生成回调地址
|
||||
siteURL := model.GetSiteURL()
|
||||
apiBaseURI, _ := url.Parse("/api/v3/callback/oss/" + uploadSession.Key)
|
||||
apiURL := siteURL.ResolveReference(apiBaseURI)
|
||||
|
||||
// 回调策略
|
||||
callbackPolicy := CallbackPolicy{
|
||||
CallbackURL: apiURL.String(),
|
||||
CallbackBody: `{"name":${x:fname},"source_name":${object},"size":${size},"pic_info":"${imageInfo.width},${imageInfo.height}"}`,
|
||||
CallbackBodyType: "application/json",
|
||||
}
|
||||
callbackPolicyJSON, err := json.Marshal(callbackPolicy)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to encode callback policy: %w", err)
|
||||
}
|
||||
callbackPolicyEncoded := base64.StdEncoding.EncodeToString(callbackPolicyJSON)
|
||||
|
||||
// 初始化分片上传
|
||||
fileInfo := file.Info()
|
||||
options := []oss.Option{
|
||||
oss.Expires(time.Now().Add(time.Duration(ttl) * time.Second)),
|
||||
oss.ForbidOverWrite(true),
|
||||
oss.ContentType(fileInfo.DetectMimeType()),
|
||||
}
|
||||
imur, err := handler.bucket.InitiateMultipartUpload(fileInfo.SavePath, options...)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to initialize multipart upload: %w", err)
|
||||
}
|
||||
uploadSession.UploadID = imur.UploadID
|
||||
|
||||
// 为每个分片签名上传 URL
|
||||
chunks := chunk.NewChunkGroup(file, handler.Policy.OptionsSerialized.ChunkSize, &backoff.ConstantBackoff{}, false)
|
||||
urls := make([]string, chunks.Num())
|
||||
for chunks.Next() {
|
||||
err := chunks.Process(func(c *chunk.ChunkGroup, chunk io.Reader) error {
|
||||
signedURL, err := handler.bucket.SignURL(fileInfo.SavePath, oss.HTTPPut, ttl,
|
||||
oss.PartNumber(c.Index()+1),
|
||||
oss.UploadID(imur.UploadID),
|
||||
oss.ContentType("application/octet-stream"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
urls[c.Index()] = signedURL
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// 签名完成分片上传的URL
|
||||
completeURL, err := handler.bucket.SignURL(fileInfo.SavePath, oss.HTTPPost, ttl,
|
||||
oss.ContentType("application/octet-stream"),
|
||||
oss.UploadID(imur.UploadID),
|
||||
oss.Expires(time.Now().Add(time.Duration(ttl)*time.Second)),
|
||||
oss.CompleteAll("yes"),
|
||||
oss.ForbidOverWrite(true),
|
||||
oss.CallbackParam(callbackPolicyEncoded))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return &serializer.UploadCredential{
|
||||
SessionID: uploadSession.Key,
|
||||
ChunkSize: handler.Policy.OptionsSerialized.ChunkSize,
|
||||
UploadID: imur.UploadID,
|
||||
UploadURLs: urls,
|
||||
CompleteURL: completeURL,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// 取消上传凭证
|
||||
func (handler *Driver) CancelToken(ctx context.Context, uploadSession *serializer.UploadSession) error {
|
||||
return handler.bucket.AbortMultipartUpload(oss.InitiateMultipartUploadResult{UploadID: uploadSession.UploadID, Key: uploadSession.SavePath}, nil)
|
||||
}
|
||||
Reference in New Issue
Block a user