83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
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package reflector
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import (
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"encoding/json"
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"net/http"
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"time"
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"github.com/bluele/gcache"
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"github.com/lbryio/lbry.go/v2/extras/errors"
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"golang.org/x/sync/singleflight"
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)
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const protectedListURL = "https://api.odysee.com/file/list_protected"
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type ProtectedContent struct {
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SDHash string `json:"sd_hash"`
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ClaimID string `json:"claim_id"`
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}
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var blockedCache = gcache.New(10).Expiration(2 * time.Minute).Build()
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func GetBlockedContent() (map[string]bool, error) {
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cachedVal, err := blockedCache.Get("protected")
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if err == nil && cachedVal != nil {
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return cachedVal.(map[string]bool), nil
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}
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method := "GET"
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var r struct {
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Success bool `json:"success"`
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Error string `json:"error"`
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Data []ProtectedContent `json:"data"`
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}
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client := &http.Client{}
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req, err := http.NewRequest(method, protectedListURL, nil)
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if err != nil {
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return nil, errors.Err(err)
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}
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res, err := client.Do(req)
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if err != nil {
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return nil, errors.Err(err)
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}
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defer res.Body.Close()
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if res.StatusCode != http.StatusOK {
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return nil, errors.Err("unexpected status code %d", res.StatusCode)
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}
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if err = json.NewDecoder(res.Body).Decode(&r); err != nil {
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return nil, errors.Err(err)
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}
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if !r.Success {
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return nil, errors.Prefix("file/list_protected API call", r.Error)
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}
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protectedMap := make(map[string]bool, len(r.Data))
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for _, pc := range r.Data {
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protectedMap[pc.SDHash] = true
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}
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err = blockedCache.Set("protected", protectedMap)
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if err != nil {
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return protectedMap, errors.Err(err)
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}
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return protectedMap, nil
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}
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var sf = singleflight.Group{}
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func IsProtected(sdHash string) bool {
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val, err, _ := sf.Do(sdHash, func() (interface{}, error) {
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protectedMap, err := GetBlockedContent()
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if err != nil {
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return nil, err
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}
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return protectedMap[sdHash], nil
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})
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if err != nil {
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return false
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}
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return val.(bool)
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}
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