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oauth2, oauth2/google: add, use ReuseTokenSource

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Token caching is now done whenever you make a Client, and
ReuseTokenSource is exported from the oauth2 package and used by the
Google TokenSources (Compute and App Engine).

Token.Expired is now Token.Valid, and works on nil receivers.

Some other wording cleanups in the process.

All tests pass. App Engine should pass, but is untested.

Change-Id: Ibe1d2599ac3ccfe9b399b1672f74bb24cfc8d311
Reviewed-on: https://go-review.googlesource.com/2195
Reviewed-by: Burcu Dogan <jbd@google.com>
This commit is contained in:
Brad Fitzpatrick
2014-12-30 13:25:01 -08:00
parent e5909d4679
commit a379e41d44
10 changed files with 97 additions and 68 deletions
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17
google/source_appengine.go
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@@ -29,13 +29,16 @@ type tokenLock struct {
}
type appEngineTokenSource struct {
ctx oauth2.Context
scopes []string
key string // guarded by package-level mutex, aeTokensMu
ctx oauth2.Context
// fetcherFunc makes the actual RPC to fetch a new access token with an expiry time.
// Provider of this function is responsible to assert that the given context is valid.
fetcherFunc func(ctx oauth2.Context, scope ...string) (string, time.Time, error)
// fetcherFunc makes the actual RPC to fetch a new access
// token with an expiry time. Provider of this function is
// responsible to assert that the given context is valid.
fetcherFunc func(ctx oauth2.Context, scope ...string) (accessToken string, expiry time.Time, err error)
// scopes and key are guarded by the package-level mutex aeTokensMu
scopes []string
key string
}
func (ts *appEngineTokenSource) Token() (*oauth2.Token, error) {
@@ -53,7 +56,7 @@ func (ts *appEngineTokenSource) Token() (*oauth2.Token, error) {
tok.mu.Lock()
defer tok.mu.Unlock()
if tok.t != nil && !tok.t.Expired() {
if tok.t.Valid() {
return tok.t, nil
}
access, exp, err := ts.fetcherFunc(ts.ctx, ts.scopes...)