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option.go
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option.go
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package oss
import (
"context"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strconv"
"strings"
"time"
)
type optionType string
const (
optionParam optionType = "HTTPParameter" // URL parameter
optionHTTP optionType = "HTTPHeader" // HTTP header
optionContext optionType = "HTTPContext" // context
optionArg optionType = "FuncArgument" // Function argument
)
const (
deleteObjectsQuiet = "delete-objects-quiet"
routineNum = "x-routine-num"
checkpointConfig = "x-cp-config"
initCRC64 = "init-crc64"
progressListener = "x-progress-listener"
storageClass = "storage-class"
responseHeader = "x-response-header"
redundancyType = "redundancy-type"
objectHashFunc = "object-hash-func"
responseBody = "x-response-body"
contextArg = "x-context-arg"
)
type (
optionValue struct {
Value interface{}
Type optionType
}
// Option HTTP option
Option func(map[string]optionValue) error
)
// ACL is an option to set X-Oss-Acl header
func ACL(acl ACLType) Option {
return setHeader(HTTPHeaderOssACL, string(acl))
}
// ContentType is an option to set Content-Type header
func ContentType(value string) Option {
return setHeader(HTTPHeaderContentType, value)
}
// ContentLength is an option to set Content-Length header
func ContentLength(length int64) Option {
return setHeader(HTTPHeaderContentLength, strconv.FormatInt(length, 10))
}
// CacheControl is an option to set Cache-Control header
func CacheControl(value string) Option {
return setHeader(HTTPHeaderCacheControl, value)
}
// ContentDisposition is an option to set Content-Disposition header
func ContentDisposition(value string) Option {
return setHeader(HTTPHeaderContentDisposition, value)
}
// ContentEncoding is an option to set Content-Encoding header
func ContentEncoding(value string) Option {
return setHeader(HTTPHeaderContentEncoding, value)
}
// ContentLanguage is an option to set Content-Language header
func ContentLanguage(value string) Option {
return setHeader(HTTPHeaderContentLanguage, value)
}
// ContentMD5 is an option to set Content-MD5 header
func ContentMD5(value string) Option {
return setHeader(HTTPHeaderContentMD5, value)
}
// Expires is an option to set Expires header
func Expires(t time.Time) Option {
return setHeader(HTTPHeaderExpires, t.Format(http.TimeFormat))
}
// Meta is an option to set Meta header
func Meta(key, value string) Option {
return setHeader(HTTPHeaderOssMetaPrefix+key, value)
}
// Range is an option to set Range header, [start, end]
func Range(start, end int64) Option {
return setHeader(HTTPHeaderRange, fmt.Sprintf("bytes=%d-%d", start, end))
}
// NormalizedRange is an option to set Range header, such as 1024-2048 or 1024- or -2048
func NormalizedRange(nr string) Option {
return setHeader(HTTPHeaderRange, fmt.Sprintf("bytes=%s", strings.TrimSpace(nr)))
}
// AcceptEncoding is an option to set Accept-Encoding header
func AcceptEncoding(value string) Option {
return setHeader(HTTPHeaderAcceptEncoding, value)
}
// IfModifiedSince is an option to set If-Modified-Since header
func IfModifiedSince(t time.Time) Option {
return setHeader(HTTPHeaderIfModifiedSince, t.Format(http.TimeFormat))
}
// IfUnmodifiedSince is an option to set If-Unmodified-Since header
func IfUnmodifiedSince(t time.Time) Option {
return setHeader(HTTPHeaderIfUnmodifiedSince, t.Format(http.TimeFormat))
}
// IfMatch is an option to set If-Match header
func IfMatch(value string) Option {
return setHeader(HTTPHeaderIfMatch, value)
}
// IfNoneMatch is an option to set IfNoneMatch header
func IfNoneMatch(value string) Option {
return setHeader(HTTPHeaderIfNoneMatch, value)
}
// CopySource is an option to set X-Oss-Copy-Source header
func CopySource(sourceBucket, sourceObject string) Option {
return setHeader(HTTPHeaderOssCopySource, "/"+sourceBucket+"/"+sourceObject)
}
// CopySourceVersion is an option to set X-Oss-Copy-Source header,include versionId
func CopySourceVersion(sourceBucket, sourceObject string, versionId string) Option {
return setHeader(HTTPHeaderOssCopySource, "/"+sourceBucket+"/"+sourceObject+"?"+"versionId="+versionId)
}
// CopySourceRange is an option to set X-Oss-Copy-Source header
func CopySourceRange(startPosition, partSize int64) Option {
val := "bytes=" + strconv.FormatInt(startPosition, 10) + "-" +
strconv.FormatInt((startPosition+partSize-1), 10)
return setHeader(HTTPHeaderOssCopySourceRange, val)
}
// CopySourceIfMatch is an option to set X-Oss-Copy-Source-If-Match header
func CopySourceIfMatch(value string) Option {
return setHeader(HTTPHeaderOssCopySourceIfMatch, value)
}
// CopySourceIfNoneMatch is an option to set X-Oss-Copy-Source-If-None-Match header
func CopySourceIfNoneMatch(value string) Option {
return setHeader(HTTPHeaderOssCopySourceIfNoneMatch, value)
}
// CopySourceIfModifiedSince is an option to set X-Oss-CopySource-If-Modified-Since header
func CopySourceIfModifiedSince(t time.Time) Option {
return setHeader(HTTPHeaderOssCopySourceIfModifiedSince, t.Format(http.TimeFormat))
}
// CopySourceIfUnmodifiedSince is an option to set X-Oss-Copy-Source-If-Unmodified-Since header
func CopySourceIfUnmodifiedSince(t time.Time) Option {
return setHeader(HTTPHeaderOssCopySourceIfUnmodifiedSince, t.Format(http.TimeFormat))
}
// MetadataDirective is an option to set X-Oss-Metadata-Directive header
func MetadataDirective(directive MetadataDirectiveType) Option {
return setHeader(HTTPHeaderOssMetadataDirective, string(directive))
}
// ServerSideEncryption is an option to set X-Oss-Server-Side-Encryption header
func ServerSideEncryption(value string) Option {
return setHeader(HTTPHeaderOssServerSideEncryption, value)
}
// ServerSideEncryptionKeyID is an option to set X-Oss-Server-Side-Encryption-Key-Id header
func ServerSideEncryptionKeyID(value string) Option {
return setHeader(HTTPHeaderOssServerSideEncryptionKeyID, value)
}
// ServerSideDataEncryption is an option to set X-Oss-Server-Side-Data-Encryption header
func ServerSideDataEncryption(value string) Option {
return setHeader(HTTPHeaderOssServerSideDataEncryption, value)
}
// SSECAlgorithm is an option to set X-Oss-Server-Side-Encryption-Customer-Algorithm header
func SSECAlgorithm(value string) Option {
return setHeader(HTTPHeaderSSECAlgorithm, value)
}
// SSECKey is an option to set X-Oss-Server-Side-Encryption-Customer-Key header
func SSECKey(value string) Option {
return setHeader(HTTPHeaderSSECKey, value)
}
// SSECKeyMd5 is an option to set X-Oss-Server-Side-Encryption-Customer-Key-Md5 header
func SSECKeyMd5(value string) Option {
return setHeader(HTTPHeaderSSECKeyMd5, value)
}
// ObjectACL is an option to set X-Oss-Object-Acl header
func ObjectACL(acl ACLType) Option {
return setHeader(HTTPHeaderOssObjectACL, string(acl))
}
// symlinkTarget is an option to set X-Oss-Symlink-Target
func symlinkTarget(targetObjectKey string) Option {
return setHeader(HTTPHeaderOssSymlinkTarget, targetObjectKey)
}
// Origin is an option to set Origin header
func Origin(value string) Option {
return setHeader(HTTPHeaderOrigin, value)
}
// ObjectStorageClass is an option to set the storage class of object
func ObjectStorageClass(storageClass StorageClassType) Option {
return setHeader(HTTPHeaderOssStorageClass, string(storageClass))
}
// Callback is an option to set callback values
func Callback(callback string) Option {
return setHeader(HTTPHeaderOssCallback, callback)
}
// CallbackVar is an option to set callback user defined values
func CallbackVar(callbackVar string) Option {
return setHeader(HTTPHeaderOssCallbackVar, callbackVar)
}
// RequestPayer is an option to set payer who pay for the request
func RequestPayer(payerType PayerType) Option {
return setHeader(HTTPHeaderOssRequester, strings.ToLower(string(payerType)))
}
// RequestPayerParam is an option to set payer who pay for the request
func RequestPayerParam(payerType PayerType) Option {
return addParam(strings.ToLower(HTTPHeaderOssRequester), strings.ToLower(string(payerType)))
}
// SetTagging is an option to set object tagging
func SetTagging(tagging Tagging) Option {
if len(tagging.Tags) == 0 {
return nil
}
taggingValue := ""
for index, tag := range tagging.Tags {
if index != 0 {
taggingValue += "&"
}
taggingValue += url.QueryEscape(tag.Key) + "=" + url.QueryEscape(tag.Value)
}
return setHeader(HTTPHeaderOssTagging, taggingValue)
}
// TaggingDirective is an option to set X-Oss-Metadata-Directive header
func TaggingDirective(directive TaggingDirectiveType) Option {
return setHeader(HTTPHeaderOssTaggingDirective, string(directive))
}
// ACReqMethod is an option to set Access-Control-Request-Method header
func ACReqMethod(value string) Option {
return setHeader(HTTPHeaderACReqMethod, value)
}
// ACReqHeaders is an option to set Access-Control-Request-Headers header
func ACReqHeaders(value string) Option {
return setHeader(HTTPHeaderACReqHeaders, value)
}
// TrafficLimitHeader is an option to set X-Oss-Traffic-Limit
func TrafficLimitHeader(value int64) Option {
return setHeader(HTTPHeaderOssTrafficLimit, strconv.FormatInt(value, 10))
}
// UserAgentHeader is an option to set HTTPHeaderUserAgent
func UserAgentHeader(ua string) Option {
return setHeader(HTTPHeaderUserAgent, ua)
}
// ForbidOverWrite is an option to set X-Oss-Forbid-Overwrite
func ForbidOverWrite(forbidWrite bool) Option {
if forbidWrite {
return setHeader(HTTPHeaderOssForbidOverWrite, "true")
} else {
return setHeader(HTTPHeaderOssForbidOverWrite, "false")
}
}
// RangeBehavior is an option to set Range value, such as "standard"
func RangeBehavior(value string) Option {
return setHeader(HTTPHeaderOssRangeBehavior, value)
}
func PartHashCtxHeader(value string) Option {
return setHeader(HTTPHeaderOssHashCtx, value)
}
func PartMd5CtxHeader(value string) Option {
return setHeader(HTTPHeaderOssMd5Ctx, value)
}
func PartHashCtxParam(value string) Option {
return addParam("x-oss-hash-ctx", value)
}
func PartMd5CtxParam(value string) Option {
return addParam("x-oss-md5-ctx", value)
}
// Delimiter is an option to set delimiler parameter
func Delimiter(value string) Option {
return addParam("delimiter", value)
}
// Marker is an option to set marker parameter
func Marker(value string) Option {
return addParam("marker", value)
}
// MaxKeys is an option to set maxkeys parameter
func MaxKeys(value int) Option {
return addParam("max-keys", strconv.Itoa(value))
}
// Prefix is an option to set prefix parameter
func Prefix(value string) Option {
return addParam("prefix", value)
}
// EncodingType is an option to set encoding-type parameter
func EncodingType(value string) Option {
return addParam("encoding-type", value)
}
// MaxUploads is an option to set max-uploads parameter
func MaxUploads(value int) Option {
return addParam("max-uploads", strconv.Itoa(value))
}
// KeyMarker is an option to set key-marker parameter
func KeyMarker(value string) Option {
return addParam("key-marker", value)
}
// VersionIdMarker is an option to set version-id-marker parameter
func VersionIdMarker(value string) Option {
return addParam("version-id-marker", value)
}
// VersionId is an option to set versionId parameter
func VersionId(value string) Option {
return addParam("versionId", value)
}
// TagKey is an option to set tag key parameter
func TagKey(value string) Option {
return addParam("tag-key", value)
}
// TagValue is an option to set tag value parameter
func TagValue(value string) Option {
return addParam("tag-value", value)
}
// UploadIDMarker is an option to set upload-id-marker parameter
func UploadIDMarker(value string) Option {
return addParam("upload-id-marker", value)
}
// MaxParts is an option to set max-parts parameter
func MaxParts(value int) Option {
return addParam("max-parts", strconv.Itoa(value))
}
// PartNumberMarker is an option to set part-number-marker parameter
func PartNumberMarker(value int) Option {
return addParam("part-number-marker", strconv.Itoa(value))
}
// Sequential is an option to set sequential parameter for InitiateMultipartUpload
func Sequential() Option {
return addParam("sequential", "")
}
// WithHashContext is an option to set withHashContext parameter for InitiateMultipartUpload
func WithHashContext() Option {
return addParam("withHashContext", "")
}
// EnableMd5 is an option to set x-oss-enable-md5 parameter for InitiateMultipartUpload
func EnableMd5() Option {
return addParam("x-oss-enable-md5", "")
}
// EnableSha1 is an option to set x-oss-enable-sha1 parameter for InitiateMultipartUpload
func EnableSha1() Option {
return addParam("x-oss-enable-sha1", "")
}
// EnableSha256 is an option to set x-oss-enable-sha256 parameter for InitiateMultipartUpload
func EnableSha256() Option {
return addParam("x-oss-enable-sha256", "")
}
// ListType is an option to set List-type parameter for ListObjectsV2
func ListType(value int) Option {
return addParam("list-type", strconv.Itoa(value))
}
// StartAfter is an option to set start-after parameter for ListObjectsV2
func StartAfter(value string) Option {
return addParam("start-after", value)
}
// ContinuationToken is an option to set Continuation-token parameter for ListObjectsV2
func ContinuationToken(value string) Option {
if value == "" {
return addParam("continuation-token", nil)
}
return addParam("continuation-token", value)
}
// FetchOwner is an option to set Fetch-owner parameter for ListObjectsV2
func FetchOwner(value bool) Option {
if value {
return addParam("fetch-owner", "true")
}
return addParam("fetch-owner", "false")
}
// DeleteObjectsQuiet false:DeleteObjects in verbose mode; true:DeleteObjects in quite mode. Default is false.
func DeleteObjectsQuiet(isQuiet bool) Option {
return addArg(deleteObjectsQuiet, isQuiet)
}
// StorageClass bucket storage class
func StorageClass(value StorageClassType) Option {
return addArg(storageClass, value)
}
// RedundancyType bucket data redundancy type
func RedundancyType(value DataRedundancyType) Option {
return addArg(redundancyType, value)
}
// RedundancyType bucket data redundancy type
func ObjectHashFunc(value ObjecthashFuncType) Option {
return addArg(objectHashFunc, value)
}
// WithContext returns an option that sets the context for requests.
func WithContext(ctx context.Context) Option {
return addArg(contextArg, ctx)
}
// Checkpoint configuration
type cpConfig struct {
IsEnable bool
FilePath string
DirPath string
}
// Checkpoint sets the isEnable flag and checkpoint file path for DownloadFile/UploadFile.
func Checkpoint(isEnable bool, filePath string) Option {
return addArg(checkpointConfig, &cpConfig{IsEnable: isEnable, FilePath: filePath})
}
// CheckpointDir sets the isEnable flag and checkpoint dir path for DownloadFile/UploadFile.
func CheckpointDir(isEnable bool, dirPath string) Option {
return addArg(checkpointConfig, &cpConfig{IsEnable: isEnable, DirPath: dirPath})
}
// Routines DownloadFile/UploadFile routine count
func Routines(n int) Option {
return addArg(routineNum, n)
}
// InitCRC Init AppendObject CRC
func InitCRC(initCRC uint64) Option {
return addArg(initCRC64, initCRC)
}
// Progress set progress listener
func Progress(listener ProgressListener) Option {
return addArg(progressListener, listener)
}
// GetResponseHeader for get response http header
func GetResponseHeader(respHeader *http.Header) Option {
return addArg(responseHeader, respHeader)
}
// CallbackResult for get response of call back
func CallbackResult(body *[]byte) Option {
return addArg(responseBody, body)
}
// ResponseContentType is an option to set response-content-type param
func ResponseContentType(value string) Option {
return addParam("response-content-type", value)
}
// ResponseContentLanguage is an option to set response-content-language param
func ResponseContentLanguage(value string) Option {
return addParam("response-content-language", value)
}
// ResponseExpires is an option to set response-expires param
func ResponseExpires(value string) Option {
return addParam("response-expires", value)
}
// ResponseCacheControl is an option to set response-cache-control param
func ResponseCacheControl(value string) Option {
return addParam("response-cache-control", value)
}
// ResponseContentDisposition is an option to set response-content-disposition param
func ResponseContentDisposition(value string) Option {
return addParam("response-content-disposition", value)
}
// ResponseContentEncoding is an option to set response-content-encoding param
func ResponseContentEncoding(value string) Option {
return addParam("response-content-encoding", value)
}
// Process is an option to set x-oss-process param
func Process(value string) Option {
return addParam("x-oss-process", value)
}
// TrafficLimitParam is a option to set x-oss-traffic-limit
func TrafficLimitParam(value int64) Option {
return addParam("x-oss-traffic-limit", strconv.FormatInt(value, 10))
}
// SetHeader Allow users to set personalized http headers
func SetHeader(key string, value interface{}) Option {
return setHeader(key, value)
}
// AddParam Allow users to set personalized http params
func AddParam(key string, value interface{}) Option {
return addParam(key, value)
}
func setHeader(key string, value interface{}) Option {
return func(params map[string]optionValue) error {
if value == nil {
return nil
}
params[key] = optionValue{value, optionHTTP}
return nil
}
}
func addParam(key string, value interface{}) Option {
return func(params map[string]optionValue) error {
if value == nil {
return nil
}
params[key] = optionValue{value, optionParam}
return nil
}
}
func addArg(key string, value interface{}) Option {
return func(params map[string]optionValue) error {
if value == nil {
return nil
}
params[key] = optionValue{value, optionArg}
return nil
}
}
func handleOptions(headers map[string]string, options []Option) error {
params := map[string]optionValue{}
for _, option := range options {
if option != nil {
if err := option(params); err != nil {
return err
}
}
}
for k, v := range params {
if v.Type == optionHTTP {
headers[k] = v.Value.(string)
}
}
return nil
}
func GetRawParams(options []Option) (map[string]interface{}, error) {
// Option
params := map[string]optionValue{}
for _, option := range options {
if option != nil {
if err := option(params); err != nil {
return nil, err
}
}
}
paramsm := map[string]interface{}{}
// Serialize
for k, v := range params {
if v.Type == optionParam {
vs := params[k]
paramsm[k] = vs.Value.(string)
}
}
return paramsm, nil
}
func FindOption(options []Option, param string, defaultVal interface{}) (interface{}, error) {
params := map[string]optionValue{}
for _, option := range options {
if option != nil {
if err := option(params); err != nil {
return nil, err
}
}
}
if val, ok := params[param]; ok {
return val.Value, nil
}
return defaultVal, nil
}
func IsOptionSet(options []Option, option string) (bool, interface{}, error) {
params := map[string]optionValue{}
for _, option := range options {
if option != nil {
if err := option(params); err != nil {
return false, nil, err
}
}
}
if val, ok := params[option]; ok {
return true, val.Value, nil
}
return false, nil, nil
}
func DeleteOption(options []Option, strKey string) []Option {
var outOption []Option
params := map[string]optionValue{}
for _, option := range options {
if option != nil {
option(params)
_, exist := params[strKey]
if !exist {
outOption = append(outOption, option)
} else {
delete(params, strKey)
}
}
}
return outOption
}
func GetRequestId(header http.Header) string {
return header.Get("x-oss-request-id")
}
func GetVersionId(header http.Header) string {
return header.Get("x-oss-version-id")
}
func GetCopySrcVersionId(header http.Header) string {
return header.Get("x-oss-copy-source-version-id")
}
func GetDeleteMark(header http.Header) bool {
value := header.Get("x-oss-delete-marker")
if strings.ToUpper(value) == "TRUE" {
return true
}
return false
}
func GetQosDelayTime(header http.Header) string {
return header.Get("x-oss-qos-delay-time")
}
// ForbidOverWrite is an option to set X-Oss-Forbid-Overwrite
func AllowSameActionOverLap(enabled bool) Option {
if enabled {
return setHeader(HTTPHeaderAllowSameActionOverLap, "true")
} else {
return setHeader(HTTPHeaderAllowSameActionOverLap, "false")
}
}
func GetCallbackBody(options []Option, resp *Response, callbackSet bool) error {
var err error
// get response body
if callbackSet {
err = setBody(options, resp)
} else {
callback, _ := FindOption(options, HTTPHeaderOssCallback, nil)
if callback != nil {
err = setBody(options, resp)
}
}
return err
}
func setBody(options []Option, resp *Response) error {
respBody, _ := FindOption(options, responseBody, nil)
if respBody != nil && resp != nil {
pRespBody := respBody.(*[]byte)
pBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
if pBody != nil {
*pRespBody = pBody
}
}
return nil
}