Hi!
I need an offline access to AdWords API.
I've obtained a refresh token with the help of GoogleAuthorizationCodeFlow
with 'offline' access type as described here:
https://code.google.com/p/google-api-java-client/wiki/OAuth2#Authorization_Code_Flow
.
I'm saving the refreshToken in a DB for future use.
With the refresh token I'm able to get a credential with this statement:
Credential credential = new OfflineCredentials.Builder()
.forApi(OfflineCredentials.Api.ADWORDS)
.fromFile()
.withRefreshToken(specificRefresToken)
.build()
.generateCredential()
The problem I'm facing is that the credential expires after 1 hour.
In the documentation it states ' By default, our client libraries
automatically refresh an expired access token.' Which utility do I need to
use to get this functionality?
To play fair, after the credential is initialized I'm putting it into a
pool so for the next AdWords API request I can reuse it.
So my getCredential method looks like that (is this additional check for
expiration time required?):
Credential credential = initializedCredentials.get(client.id)
if (credential != null && credential.expiresInSeconds > 50) {
return credential
}
//initialize credential and put into initializedCredentials for
future use
....
I wouldn't like to reinvent a wheel if there are some utilities already
available and can handle this for me.
I appreciate the feedback.
Cheers!
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