private Calendar getCalendar(final ApiKey apiKey) throws UpdateFailedException {
HttpTransport httpTransport = new NetHttpTransport();
JacksonFactory jsonFactory = new JacksonFactory();
// Get all the attributes for this connector's oauth token from the stored attributes
final String accessToken = guestService.getApiKeyAttribute(apiKey, "accessToken");
final String refreshToken = guestService.getApiKeyAttribute(apiKey, "refreshToken");
final String clientId = guestService.getApiKeyAttribute(apiKey, "google.client.id");
final String clientSecret = guestService.getApiKeyAttribute(apiKey, "google.client.secret");
final GoogleCredential.Builder builder = new GoogleCredential.Builder();
builder.setTransport(httpTransport);
builder.setJsonFactory(jsonFactory);
builder.setClientSecrets(clientId, clientSecret);
GoogleCredential credential = builder.build();
final Long tokenExpires = Long.valueOf(guestService.getApiKeyAttribute(apiKey, "tokenExpires"));
credential.setExpirationTimeMilliseconds(tokenExpires);
credential.setAccessToken(accessToken);
credential.setRefreshToken(refreshToken);
try {
if (tokenExpires < System.currentTimeMillis()) {
boolean tokenRefreshed = false;
// Don't worry about checking if we are running on a mirrored test instance.
// Refreshing tokens independently on both the main server and a mirrored instance
// seems to work just fine.
// Try to swap the expired access token for a fresh one.
tokenRefreshed = credential.refreshToken();
if (tokenRefreshed) {
Long newExpireTime = credential.getExpirationTimeMilliseconds();
logger.info(
"google calendar token has been refreshed, new expire time = " + newExpireTime);
// Update stored expire time
guestService.setApiKeyAttribute(apiKey, "accessToken", credential.getAccessToken());
guestService.setApiKeyAttribute(apiKey, "tokenExpires", newExpireTime.toString());
}
}
} catch (TokenResponseException e) {
logger.warn(
"module=GoogleCalendarUpdater component=background_updates action=refreshToken"
+ " connector="
+ apiKey.getConnector().getName()
+ " guestId="
+ apiKey.getGuestId()
+ " status=permanently failed");
// Notify the user that the tokens need to be manually renewed
notificationsService.addNamedNotification(
apiKey.getGuestId(),
Notification.Type.WARNING,
connector().statusNotificationName(),
"Heads Up. We failed in our attempt to automatically refresh your Google Calendar authentication tokens.<br>"
+ "Please head to <a href=\"javascript:App.manageConnectors()\">Manage Connectors</a>,<br>"
+ "scroll to the Google Calendar connector, and renew your tokens (look for the <i class=\"icon-resize-small icon-large\"></i> icon)");
// Record permanent update failure since this connector is never
// going to succeed
guestService.setApiKeyStatus(
apiKey.getId(), ApiKey.Status.STATUS_PERMANENT_FAILURE, Utils.stackTrace(e));
throw new UpdateFailedException(
"refresh token attempt permanently failed due to a bad token refresh response", e, true);
} catch (IOException e) {
logger.warn(
"module=GoogleCalendarUpdater component=background_updates action=refreshToken"
+ " connector="
+ apiKey.getConnector().getName()
+ " guestId="
+ apiKey.getGuestId()
+ " status=temporarily failed");
// Notify the user that the tokens need to be manually renewed
throw new UpdateFailedException("refresh token attempt failed", e, true);
}
final Calendar.Builder calendarBuilder =
new Calendar.Builder(httpTransport, jsonFactory, credential);
final Calendar calendar = calendarBuilder.build();
return calendar;
}
