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From Robert Newson <rnew...@apache.org>
Subject Re: bulk update failing when document has attachments?
Date Wed, 11 Dec 2013 13:11:18 GMT
http://json.org/string.gif talks escaping back slash, not forward
slash. The PDF page 194 talks about escaping forward slash within a
RegExp statement in Javascript, which is not JSON.

B.


On 11 December 2013 12:58, Daniel Gonzalez <gonvaled@gonvaled.com> wrote:
> It is not an artifact: I am taking that from the couchdb documentation.
>
> And according to Alexander Shorin forward slashes **really** need to be
> escaped in json. But it is not me who must do that, but the library
> converting the python objects to couchdb, so that can not be my problem.
>
> Now I am left with a badarg exception, which I can not relate to my input
> data:
>
> Exception > Problems updating list of documents (length = 1): (500,
> ('badarg', '46'))
>
> What does that '46' mean?
>
>
> On Wed, Dec 11, 2013 at 1:47 PM, Robert Newson <rnewson@apache.org> wrote:
>
>> I think your "image\/png" is just an artifact of your printing method,
>> you don't need to escape the forward slash in content_type, see
>> example below;
>>
>>
>> {"_id":"doc1","_rev":"1-96e2a6c78b8bfb227e79e1fbb16873f9","_attachments":{"att1":{"content_type":"image/png","revpos":1,"digest":"md5-XUFAKrxLKna5cZ2REBfFkg==","length":5,"stub":true}}}
>>
>> B.
>>
>>
>> On 11 December 2013 12:35, Daniel Gonzalez <gonvaled@gonvaled.com> wrote:
>> > That would work *only* for that prefix (data:image/png;base64,), or any
>> > prefix which happens to have the same length. Not very robust.
>> >
>> > I just discovered that the data coming from the front-end comes in
>> data-uri
>> > format (rfc2397). This should handle any rfc2397 prefix:
>> > http://stackoverflow.com/a/20518589/647991 (maybe buggy, just
>> implemented).
>> >
>> > Another question: even after removing the data-uri prefix, I am still
>> > getting problems. I think my content type is not right.
>> >
>> > Must content_type be escaped? That is:
>> >
>> > 'content_type': 'image/png', -> 'content_type': 'image\/png',
>> >
>> > The only reference I see to that is an example here:
>> > http://wiki.apache.org/couchdb/HTTP_Document_API#Inline_Attachments
>> >
>> > But no real explanation of why. It seems no other strings must be escaped
>> > for couchdb. The only requirement that couchdb seems to impose on top of
>> > json is that the data in the attachment must be in base64 format.
>> >
>> > But now it seems that the content_type must escape the slashes (/). Why?
>> It
>> > does not seem to be a json feature: slashes are fine in any json string.
>> So
>> > what is that?
>> >
>> > I would like to know the specificacion for the format expected for
>> > content_type. Does that have a name? I am calling it "escaped mediatype".
>> > Is it part of a more generic escaping process expected by couchdb, or
>> only
>> > the content_type is affected? Is there an official name for that?
>> >
>> >
>> > On Wed, Dec 11, 2013 at 12:18 PM, Johannes Jörg Schmidt <
>> > schmidt@netzmerk.com> wrote:
>> >
>> >> data.slice(22)
>> >>
>> >> 2013/12/11 Daniel Gonzalez <gonvaled@gonvaled.com>:
>> >> > Thanks, I just realized about this. The base64 is coming from the
>> >> > javascript frontend (chose file in a form). So I need to remove the
>> >> > prefix "data:image/png;base64,".
>> >> > Not sure how to do this without rolling my own regexes though.
>> >> >
>> >> >
>> >> > On Wed, Dec 11, 2013 at 12:01 PM, Alexander Shorin <kxepal@gmail.com>
>> >> wrote:
>> >> >
>> >> >> Hi,
>> >> >>
>> >> >> _attachments data should be valid base64 encoded string, while
you
>> have:
>> >> >> >
>> >> >>
>> >>
>> data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAM8AAADkCAIAAACwiOf9AAAAA3NCSVQICAjb4U/gAAAgAElEQVR4nO...
>> >> >>
>> >> >> Chars : and , are invalid for base64.
>> >> >> --
>> >> >> ,,,^..^,,,
>> >> >>
>> >> >>
>> >> >> On Wed, Dec 11, 2013 at 2:49 PM, Daniel Gonzalez <
>> gonvaled@gonvaled.com
>> >> >
>> >> >> wrote:
>> >> >> > Hi,
>> >> >> >
>> >> >> > (SO reference: http://stackoverflow.com/q/20516980/647991.
I post
>> >> there
>> >> >> > because formatting makes things much easier to read, replies
/
>> >> comments
>> >> >> are
>> >> >> > well organized, and the up/downvote mechanism works)
>> >> >> >
>> >> >> > I am performing the following operation:
>> >> >> >
>> >> >> > 1. Prepare some documents: `docs = [ doc1, doc2, ... ]`. The
>> documents
>> >> >> have
>> >> >> > *maybe* attachments
>> >> >> > 2. I `POST` to `_bulk_docs` the list of documents
>> >> >> > 3. I get an `Exception > Problems updating list of documents
>> (length =
>> >> >> 1):
>> >> >> > (500, ('badarg', '58'))`
>> >> >> >
>> >> >> > My `bulk_docs` is (in this case just one):
>> >> >> >
>> >> >> >     [   {   '_attachments': {   'image.png': {   'content_type':
>> >> >> > 'image/png',
>> >> >> >                                                  'data':
>> >> >> >
>> >> >>
>> >>
>> 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAM8AAADkCAIAAACwiOf9AAAAA3NCSVQICAjb4U/gAAAgAElEQVR4nO...'}},
>> >> >> >             '_id': '08b8fc66-cd90-47a1-9053-4f6fefabdfe3',
>> >> >> >             '_rev': '15-ff3d0e8baa56e5ad2fac4937264fb3f6',
>> >> >> >             'docmeta': {   'created': '2013-10-01 14:48:24.311257',
>> >> >> >                            'updated': [   '2013-10-01
>> >> 14:48:24.394157',
>> >> >> >                                           '2013-12-11
>> >> 08:19:47.271812',
>> >> >> >                                           '2013-12-11
>> >> 08:25:05.662546',
>> >> >> >                                           '2013-12-11
>> >> 10:38:56.116145']},
>> >> >> >             'org_id': 45345,
>> >> >> >             'outputs_id': None,
>> >> >> >             'properties': {   'auto-t2s': False,
>> >> >> >                               'content_type': 'image/png',
>> >> >> >                               'lang': 'es',
>> >> >> >                               'name': 'dfasdfasdf',
>> >> >> >                               'text': 'erwerwerwrwerwr'},
>> >> >> >             'subtype': 'voicemail-st',
>> >> >> >             'tags': ['RRR-ccc-dtjkqx'],
>> >> >> >             'type': 'recording'}]
>> >> >> >
>> >> >> > This is the detailed exception:
>> >> >> >
>> >> >> >     Traceback (most recent call last):
>> >> >> >       File "portal_support_ut.py", line 470, in test_UpdateDoc
>> >> >> >         self.ps.UpdateDoc(self.org_id, what, doc_id, new_data)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/ps/complex_ops.py",
>> >> >> > line 349, in UpdateDoc
>> >> >> >         success, doc = database.UpdateDoc(doc_id, new_data)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/cdb/core/updater.py",
>> >> >> > line 38, in UpdateDoc
>> >> >> >         res = self.SaveDoc(doc_id, doc)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/cdb/core/saver.py",
>> >> >> > line 88, in SaveDoc
>> >> >> >         else      : self.bulk_append(doc, flush, update_revision)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/cdb/core/bulker.py",
>> >> >> > line 257, in bulk_append
>> >> >> >         if force_send or flush or not self.timer.use_timer
:
>> >> >> > self.BulkSend(show_progress=True)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/cdb/core/bulker.py",
>> >> >> > line 144, in BulkSend
>> >> >> >         results = self.UpdateDocuments(self.bulk)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/projects/new-wavilon-portal/python_modules/wav/cdb/core/bulker.py",
>> >> >> > line 67, in UpdateDocuments
>> >> >> >         results = self.db.update(bulkdocs)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/.virtualenvs/python2.7.3-wavilon1/local/lib/python2.7/site-packages/couchdb/client.py",
>> >> >> > line 764, in update
>> >> >> >         _, _, data = self.resource.post_json('_bulk_docs',
>> >> body=content)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/.virtualenvs/python2.7.3-wavilon1/local/lib/python2.7/site-packages/couchdb/http.py",
>> >> >> > line 527, in post_json
>> >> >> >         **params)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/.virtualenvs/python2.7.3-wavilon1/local/lib/python2.7/site-packages/couchdb/http.py",
>> >> >> > line 546, in _request_json
>> >> >> >         headers=headers, **params)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/.virtualenvs/python2.7.3-wavilon1/local/lib/python2.7/site-packages/couchdb/http.py",
>> >> >> > line 542, in _request
>> >> >> >         credentials=self.credentials)
>> >> >> >       File
>> >> >> >
>> >> >>
>> >>
>> "/home/gonvaled/.virtualenvs/python2.7.3-wavilon1/local/lib/python2.7/site-packages/couchdb/http.py",
>> >> >> > line 398, in request
>> >> >> >         raise ServerError((status, error))
>> >> >> >     ServerError: (500, ('badarg', '58'))
>> >> >> >
>> >> >> >
>> >> >> > What does that `badarg` mean? Is it possible to send attachments
>> when
>> >> >> doing
>> >> >> > `_bulk_docs`?
>> >> >> >
>> >> >> > Thanks,
>> >> >> > Daniel
>> >> >>
>> >>
>>

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