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fix:compatibility cache expiration returns empty string issue (#742)

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This commit is contained in:
leonard627
2023-11-02 09:42:17 +08:00
committed by GitHub
parent 04b62f6c3c
commit 0ffe34187a
1 changed files with 9 additions and 6 deletions
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15
credential/default_access_token.go
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@@ -66,9 +66,11 @@ func (ak *DefaultAccessToken) GetAccessToken() (accessToken string, err error) {
func (ak *DefaultAccessToken) GetAccessTokenContext(ctx context.Context) (accessToken string, err error) {
// 先从cache中取
accessTokenCacheKey := fmt.Sprintf("%s_access_token_%s", ak.cacheKeyPrefix, ak.appID)
val := ak.cache.Get(accessTokenCacheKey)
if accessToken = val.(string); accessToken != "" {
return
if val := ak.cache.Get(accessTokenCacheKey); val != nil {
if accessToken = val.(string); accessToken != "" {
return
}
}
// 加上lock，是为了防止在并发获取token时，cache刚好失效，导致从微信服务器上获取到不同token
@@ -76,9 +78,10 @@ func (ak *DefaultAccessToken) GetAccessTokenContext(ctx context.Context) (access
defer ak.accessTokenLock.Unlock()
// 双检，防止重复从微信服务器获取
val = ak.cache.Get(accessTokenCacheKey)
if accessToken = val.(string); accessToken != "" {
return
if val := ak.cache.Get(accessTokenCacheKey); val != nil {
if accessToken = val.(string); accessToken != "" {
return
}
}
// cache失效，从微信服务器获取