我不知道如何打電話cloud.WithContext，google.DefaultClient如果我有appengine.Context和沒有context.Context。有（舊）“appengine”和（新）“google.golang.org/appengine”包。第一個(gè)自定義帶來了appengine.Context當(dāng)?shù)诙€(gè)帶有context.Context從"golang.org/x/net/context"整體google.golang.org/cloud期待context.Context而已。我很樂意改用 new "google.golang.org/appengine"，但我一直堅(jiān)持使用runtime.RunInBackground尚未移植的內(nèi)容。來自https://github.com/golang/appengine：appengine/aetest，appengine/cloudsql并且appengine/runtime還沒有移植。如果appengine/runtime已經(jīng)移植，我可以寫什么：import ( "golang.org/x/net/context" "google.golang.org/appengine" "google.golang.org/appengine/runtime" "google.golang.org/cloud" "google.golang.org/cloud/storage")func handler(w http.ResponseWriter, r *http.Request) { c := appengine.NewContext(r) runtime.RunInBackground(c, func(ctx context.Context) { hc, _ := google.DefaultClient(ctx, storage.ScopeFullControl) cc := cloud.WithContext(ctx, appengine.AppID(ctx), hc) … })}但還沒有"google.golang.org/appengine/runtime"。所以我有runtime.RunInBackground(c, func(ctx appengine.Context) {
3 回答
楊__羊羊
TA貢獻(xiàn)1943條經(jīng)驗(yàn) 獲得超7個(gè)贊
做這個(gè)：
func getCloudContext(appengineContext context.Context) context.Context {
hc := &http.Client{
Transport: &oauth2.Transport{
Source: google.AppEngineTokenSource(appengineContext, storage.ScopeFullControl),
Base: &urlfetch.Transport{Context: appengineContext},
},
}
return cloud.NewContext(appengine.AppID(appengineContext), hc)
}
或者，如果通過開發(fā)服務(wù)器傳遞憑據(jù)不起作用，您也可以使用顯式憑據(jù)：
func getCloudContext(aeCtx context.Context) (context.Context, error) {
data, err := ioutil.ReadFile("/path/to/credentials.json")
if err != nil {
return nil, err
}
conf, err := google.JWTConfigFromJSON(
data,
storage.ScopeFullControl,
)
if err != nil {
return nil, err
}
tokenSource := conf.TokenSource(aeCtx)
hc := &http.Client{
Transport: &oauth2.Transport{
Source: tokenSource,
Base: &urlfetch.Transport{Context: aeCtx},
},
}
return cloud.NewContext(appengine.AppID(aeCtx), hc), nil
}
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