The problem here seems that entry = myService.update(new URL(entry.getEditLink().getHref()), entry);
simply does not do anything for some records. Is there any way to force the update? before update: 2011-09-07T00:34:47.503Z, value: 1315355687503, etag: "Rns7ezVSLyt7I2A9WhdWE0gPQQw." after update: 2011-09-07T00:34:47.503Z, value: 1315355687503, etag: "Rns7ezVSLyt7I2A9WhdWE0gPQQw." On 8/9/11 9:22 AM, "Alain Vongsouvanh" <[email protected]> wrote: > Hello Alexey, > > Please see my comment inline: > > On Mon, Aug 8, 2011 at 7:38 PM, Alexey Panteleev <[email protected]> wrote: >> Our app reads from the feed upon user¹s request and as a test executes this: >> >> entry = myService.update(new URL(entry.getEditLink().getHref()), entry); >> >> It seems this update command does not always update the record and so I >> compute the time diff based on some old update time. >> >> 2011/08/08 19:34:42:814 PDT [WARN] ImapConnection - GMail ~ updated1: >> 2011-08-09T02:29:27.253Z, value: 1312856967253, etag: >> "Rnw-ezVSLit7I2A9WhdRGEgMTgI." >> 2011/08/08 19:34:43:117 PDT [WARN] ImapConnection - GMail ~ updated2: >> 2011-08-09T02:32:51.932Z, value: 1312857171932, etag: >> "QHc4ejVSLit7I2A9WhdRGEgNRgM." >> Time diff (min): 1 >> 2011/08/08 19:35:01:282 PDT [WARN] ImapConnection - GMail ~ updated1: >> 2011-08-09T02:29:25.787Z, value: 1312856965787, etag: >> "RHkzfzVSLit7I2A9WhdRGEgMTgI." >> 2011/08/08 19:35:01:553 PDT [WARN] ImapConnection - GMail ~ updated2: >> 2011-08-09T02:33:10.382Z, value: 1312857190382, etag: >> "QX0zejVSLit7I2A9WhdRGEgNRg0." >> Time diff (min): 1 >> 2011/08/08 19:35:11:198 PDT [WARN] ImapConnection - GMail ~ updated1: >> 2011-08-09T02:29:25.787Z, value: 1312856965787, etag: >> "RHkzfzVSLit7I2A9WhdRGEgMTgI." >> 2011/08/08 19:35:11:499 PDT [WARN] ImapConnection - GMail ~ updated2: >> 2011-08-09T02:29:25.787Z, value: 1312856965787, etag: >> "RHkzfzVSLit7I2A9WhdRGEgMTgI." >> Time diff (min): 5 >> > > The last 6 lines seem to indicate that you tried to update the same entry (in > bold) twice (with etag "RHkzfzVSLit7I2A9WhdRGEgMTgI"), the second update > should have failed and the API should have thrown a 412 Precondition Failed > error since the etag was outdated. > This can happen if a user tries to update a contact twice in a row and your > app didn't have the time to save the contact returned by the API in your local > storage. > > To avoid this kind of race condition, your application should always try to > retrieve the contact from the API before every update. > > Best, > Alain > >> >> On 8/8/11 11:31 AM, "Alain Vongsouvanh" <[email protected] >> <http://[email protected]> > wrote: >> >>> Hello Alexey, >>> >>> Are you using batch requests to update your contact? Can you make sure that >>> the contact has indeed been updated? >>> It might be hard to test but one thing you could try is printing the value >>> of updated before and after the update to make sure that it changes. >>> Another thing is to make sure that the contact's etag changed as well. >>> >>> Best, >>> Alain >>> >>> On Sun, Aug 7, 2011 at 1:26 PM, Alexey Panteleev <[email protected] >>> <http://[email protected]> > wrote: >>>> Hi Alain, >>>> >>>> I read recently updated contacts from the feed and execute the update for >>>> each to measure the timestamp difference. >>>> What I see is that for some contacts the difference is abnormal (I printed >>>> out the entry.getUpdated() this time also): >>>> >>>> 2011/08/07 13:20:30:956 PDT [WARN] GMail ~ Time diff (min): 1, str: >>>> 2011-08-07T20:18:15.362Z >>>> 2011/08/07 13:20:39:099 PDT [WARN] GMail ~ Time diff (min): 1, str: >>>> 2011-08-07T20:18:43.648Z >>>> 2011/08/07 13:20:49:630 PDT [WARN] GMail ~ Time diff (min): 62, str: >>>> 2011-08-07T19:17:54.834Z <---- 62min? >>>> ... >>>> >>>> >>>> I am using the following versions in my maven setup: >>>> >>>> <properties> >>>> <gdataVersion>1.41.5</gdataVersion> >>>> </properties> >>>> >>>> <dependency> >>>> <groupId>com.google.gdata</groupId> >>>> <artifactId>gdata-contacts-3.0</artifactId> >>>> <version>${gdataVersion}</version> >>>> </dependency> >>>> ... >>>> <dependency> >>>> <groupId>com.google.gdata</groupId> >>>> <artifactId>gdata-client-1.0</artifactId> >>>> <version>${gdataVersion}</version> >>>> </dependency> >>>> <dependency> >>>> <groupId>com.google.gdata</groupId> >>>> <artifactId>gdata-core-1.0</artifactId> >>>> <version>${gdataVersion}</version> >>>> </dependency> >>>> <dependency> >>>> <groupId>com.google.collections</groupId> >>>> <artifactId>google-collections</artifactId> >>>> <version>1.0</version> >>>> </dependency> >>>> >>>> >>>> On 8/5/11 9:47 AM, "Alain Vongsouvanh" <[email protected] >>>> <http://[email protected]> <http://[email protected]> > wrote: >>>> >>>>> Hello Alexey, >>>>> >>>>> Sorry about the delay in getting back to you! I just tried updating and >>>>> checking the difference between my computer timestamp and the updated >>>>> value timestamp and the difference was within 1 or 2 seconds, not hours. >>>>> >>>>> Can you try printing the value of "entry.getUpdated() >>>>> " to check if the string representation makes sense. Also, what version of >>>>> the client library are you using? >>>>> >>>>> Best, >>>>> Alain >>>>> >>>>> >>>>> On Tue, Aug 2, 2011 at 1:02 PM, Alexey Panteleev <[email protected] >>>>> <http://[email protected]> <http://[email protected]> > wrote: >>>>>> >>>>>> Hello, >>>>>> >>>>>> >>>>>> >>>>>> I've been running some experiments monitoring the Updated timestamp on >>>>>> contact records: >>>>>> >>>>>> >>>>>> >>>>>> long t1 = System.currentTimeMillis(); >>>>>> >>>>>> entry = myService.update(new URL(entry.getEditLink().getHref()), entry); >>>>>> >>>>>> long updateTimeDiff = t1 - entry.getUpdated().getValue(); >>>>>> >>>>>> >>>>>> >>>>>> What I see is that the time difference between the update time and my >>>>>> local time varies drastically from one call to another, >>>>>> >>>>>> one time I see 1min difference another time it is 50min difference, which >>>>>> really means that the google servers record very different utc timestamps >>>>>> for events that actually happen next to each other. >>>>>> >>>>>> >>>>>> >>>>>> Can you please explain this and also tell me how I could rely on these >>>>>> timestamps during synch -- You received this message because you are subscribed to the Google Groups "Google Contacts, Shared Contacts and User Profiles APIs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://code.google.com/apis/contacts/community/forum.html
