Currently there is no easy way to troubleshoot the problems that are
reported in the wild concerning failures to link different identities
using Hybrid OpenID+OAuth authentication scheme. Add some log output
to simplify this job.
For example with this change there should be hopefully clear what is
going on with this issue: [1].
Signing in phase with OpenID provider:
======================================
DEBUG com.google.gerrit.httpd.auth.openid.LoginForm : mode "SIGN_IN"
DEBUG com.google.gerrit.httpd.auth.openid.LoginForm : OpenId provider
"https://login.launchpad.net/+openid"
DEBUG com.google.gerrit.httpd.auth.openid.OpenIdServiceImpl : OpenID:
openid-realm=http://localhost:8080/
Following by Identity linking phase with OAuth provider:
========================================================
DEBUG com.google.gerrit.httpd.auth.openid.LoginForm : mode
"LINK_IDENTIY"
DEBUG com.google.gerrit.httpd.auth.openid.LoginForm : OAuth provider
"http://gerrit-oauth-provider_-google-oauth"
[...]
DEBUG com.google.gerrit.httpd.auth.openid.OAuthSessionOverOpenID :
Linking "34534523945376523984" to "1000000"
[1] https://github.com/davido/gerrit-oauth-provider/issues/46
Change-Id: Ida117aea49b86c3915c738ae1b9d8afd917b5eb9
c55cb8902f