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58 lines
1.4 KiB
58 lines
1.4 KiB
package dao |
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import ( |
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"context" |
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"crypto/sha1" |
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"encoding/hex" |
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"fmt" |
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"go-common/library/cache/redis" |
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"go-common/library/log" |
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) |
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const ( |
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_defaultExpiration = 10 |
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_tokenNamespace = "upload_token:" |
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) |
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// RequestUploadToken generates a token for subsequent upload. |
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// Token will expire in a specific duration. |
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func (d *Dao) RequestUploadToken(ctx context.Context, bucket, operator string, now int64) (token string, err error) { |
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token = genToken(bucket, operator, now) |
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conn := d.redis.Get(ctx) |
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defer conn.Close() |
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nsToken := namespaceToken(token) |
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if _, err = conn.Do("SETEX", nsToken, _defaultExpiration, "1"); err != nil { |
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log.Error("conn.Do(SETEX %s %d) failure(%v)", nsToken, _defaultExpiration, err) |
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} |
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return |
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} |
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// VerifyUploadToken verifies if a token is legal. |
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func (d *Dao) VerifyUploadToken(ctx context.Context, token string) bool { |
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conn := d.redis.Get(ctx) |
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defer conn.Close() |
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nsToken := namespaceToken(token) |
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valid, err := redis.Bool(conn.Do("GET", nsToken)) |
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if err != nil && err != redis.ErrNil { |
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log.Warn("conn.Do(GET %s) failure(%v)", nsToken, err) |
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return false |
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} |
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return valid |
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} |
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func genToken(bucket, operator string, now int64) string { |
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sha := sha1.New() |
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sha.Write([]byte(fmt.Sprintf("i love bilibili:%s:%s:%d", bucket, operator, now))) |
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return fmt.Sprintf("%s:%d", hex.EncodeToString(sha.Sum([]byte(""))), now) |
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} |
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// Avoid key collision. |
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func namespaceToken(token string) string { |
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return _tokenNamespace + token |
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}
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