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From Robert Newson <rnew...@apache.org>
Subject Re: bulk update failing when document has attachments?
Date Wed, 11 Dec 2013 12:47:33 GMT
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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