Thanks for the reply. I have enabled the logs as suggested and attached the screen shot for the same. I assume my connection is successful. Please have a look and let me know if my assumption is correct. (Marked in red is the output of list buckets service)
Also as you are aware access token will gets expired after as hour. So in order to renew the access token i have configured the refresh token. I have provided required parameters like access token, refresh token, refresh url, consumer secret, consumer id, refresh url request as “custom ESB service” and refresh esb custom service as “wm.cloudstreams.google.cloudstorage.refreshToken:customRefreshToken”. But unable to renew the access token after it gets expired (Getting unauthorized error if i run the list bucket service after an hour). Again i need to manually disable the connection and update the access token and then enable the connection. Please clarify on this if i am doing anything wrong.