Hello Dmitri,
The OAuth mechanism you are using in this process is OAuth 1.0, the one you
are using for the Tasks API is OAuth 2.0.
Unfortunately, the GData Java client library doesn't support OAuth 2.0, but
that doesn't mean you won't be able to use an OAuth 2.0 access token if you
already have one by doing this:
service.setHeader("Authorization", "OAuth " + this.oauthAccessToken);
The downside is that refreshing the token is not handled by the client
library and you would have to do it manually by catching the 401/403 error
sent by the API when the OAuth 2.0 access token is expired.
Best,
Alain
On Tue, Jul 12, 2011 at 1:38 AM, DP <[email protected]> wrote:
> Hello!
>
> Thanks for your answer.
>
> > Please use "https://www.google.com/calendar/feeds"; as scope.
>
> I modified the code accordingly.
>
> > oauthParameters.setOAuthVerifier("toy8IMW6sInKDTjPxfy5zMFD");
> >
> >
> oauthParameters.setOAuthToken("4/Oj-Q3isN3rz8mvJbgAkaIHGkL882");
> >
> oauthParameters.setOAuthTokenSecret("xQ8-9M22ZSdITuaTFAhPpcoA");
> >
>
>
> > Are those hard-coded or retrieved from the OAuth dance?
>
> They are retrieved from the OAuth dance. At the moment, I just paste these
> values from the log output of the web application.
>
> > oauthHelper.getAccessToken(oauthParameters);
> >
>
>
> > Are you executing this code every time? You should do it only once to
> retrieve the long-lived Access Token.
>
> Then, my entire process is wrong. I assumed that
>
> a) the access token is short lived and
> b) the refresh token is long lived,
>
> i. e. I should get the refresh token once and exchange it for access tokens
> often (as in Google Tasks API).
>
> Now it seems that it's exactly the opposite - it's necessary to get the
> access token once and then use it as many times as I want (until the user or
> my app revoke it).
>
> * * *
>
> I changed my code:
>
> 1) In the interactive part, I get the access token at the end of OAuth
> dance.
>
> > try {
> > final String accessToken =
> oauthHelper.getAccessToken(oauthParameters);
> >
> > LOGGER.debug("Access token: {}", accessToken);
>
> > } catch (final OAuthException exception) {
> > LOGGER.error("", exception);
> > }
> >
>
> 2) Then, in the server-sided part, I use the OAuth parameters in this way:
>
>
> > @Test
> > public void testCalendar2() {
> > try {
> > final PrivateKey privKey = getPrivateKey();
>
> > final OAuthRsaSha1Signer signer = new
> OAuthRsaSha1Signer(privKey);
> >
> >
> > GoogleOAuthParameters oauthParameters = new
> GoogleOAuthParameters();
> > oauthParameters.setOAuthConsumerKey(CONSUMER_KEY);
> >
> > oauthParameters.setScope("https://www.google.com/calendar/feeds
> ");
> >
> > oauthParameters.setOAuthVerifier("Mbu7axn2kpiVsvoQmh18Q21f"); //
> Verifier from the interactive part
> >
> >
> oauthParameters.setOAuthToken("1/Pw10CRNNfiHMdk9n4U3FHP8pccHuF17VsicKYK8xt4Y");
> // Access token from the interactive part
> > oauthParameters.setOAuthTokenSecret("ftepxc4olAgTGVmXJhjS7HLo");
> // Token secret from the interactive part
> >
> > final CalendarService calendarService =
>
> > new CalendarService("myapp.com");
> >
> > calendarService
> > .setOAuthCredentials(oauthParameters, signer);
>
> >
> > LOGGER.debug("calendarService: {}", calendarService);
> >
> > final URL feedUrl =
> > new URL(
> > "
> https://www.google.com/calendar/feeds/default/allcalendars/full";);
>
> > final CalendarFeed resultFeed =
> > calendarService.getFeed(feedUrl, CalendarFeed.class);
> >
> > LOGGER.debug("resultFeed: {}", resultFeed);
> >
> > LOGGER.debug("Your calendars:");
> >
> > CalendarEntry pccCalendar = null;
> > for (int i = 0; (i < resultFeed.getEntries().size())
> > && (pccCalendar == null); i++) {
> > final CalendarEntry entry = resultFeed.getEntries().get(i);
> >
> > LOGGER.debug(entry.getTitle().getPlainText());
> > }
> >
> > } catch (final IOException exception) {
> > LOGGER.error("", exception);
> > Assert.fail(exception.getMessage());
> > } catch (final OAuthException exception) {
> > LOGGER.error("", exception);
> > Assert.fail(exception.getMessage());
> > } catch (final ServiceException exception) {
> > LOGGER.error("", exception);
> > Assert.fail(exception.getMessage());
> > }
> > }
> >
>
>
> And now it seems to work.
>
> Best regards
>
> Dmitri
>
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--
Alain Vongsouvanh
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