`zen.job.list` per_page param doesn't work

[Daenyth]

I'm trying to list my zencoder jobs, but per_page doesn't seem to work. Additionally, there are sometimes errors decoding the json.

In [9]: jl = zen.job.list(per_page=51)
In [10]: len(jl.body)
Out[10]: 50

[Daenyth]

So far I'm working around with this:

In [25]: while True:
   ....:     jl = zen.job.list(page=pageno)
   ....:     if len(jl.body) == 0:
   ....:         break
   ....:     jobs.extend(jl.body)
   ....:     pageno += 1

[Daenyth]

I spoke with zencoder support and they clarified that 50 is a hard cap imposed by the web service on the "per_page" param.

[schworer]

Thanks! Is there any error handling we can add, or limit per_page requests to 50 before sending the request to zencoder?

[Daenyth]

Probably just limiting the requests, and adding the limit into the docstring would be fine.

[Daenyth]

I do get fairly frequent JSON errors with this method though:

In [8]: zen.job.list(per_page=1)
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)

/home/Daenyth/code/foo/<ipython console> in <module>()

/usr/lib/python2.7/site-packages/zencoder/core.pyc in list(self, page, per_page)
    252                 "page": page,
    253                 "per_page": per_page}
--> 254         return self.get(self.base_url, data=data)
    255 
    256     def details(self, job_id):

/usr/lib/python2.7/site-packages/zencoder/core.pyc in get(self, url, data)
    101         response, content = self.http.request(url, method="GET",
    102                                               headers=self.headers)
--> 103         return self.process(response, content)
    104 
    105     def post(self, url, body=None):

/usr/lib/python2.7/site-packages/zencoder/core.pyc in process(self, http_response, content)
    118         """
    119         code = http_response.status
--> 120         body = self.decode(content)
    121         response = Response(code, body, content, http_response)
    122         return response

/usr/lib/python2.7/site-packages/zencoder/core.pyc in decode(self, raw_body)
     72                 return None
     73             else:
---> 74                 return json.loads(raw_body)
     75         else:
     76             raise NotImplementedError('Decoding as XML is not supported.')

/usr/lib/python2.7/json/__init__.py in loads(s, encoding, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
    324             parse_int is None and parse_float is None and
    325             parse_constant is None and object_pairs_hook is None and not kw):
--> 326         return _default_decoder.decode(s)
    327     if cls is None:
    328         cls = JSONDecoder

/usr/lib/python2.7/json/decoder.py in decode(self, s, _w)
    358 
    359         """
--> 360         obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    361         end = _w(s, end).end()
    362         if end != len(s):

/usr/lib/python2.7/json/decoder.py in raw_decode(self, s, idx)
    375         try:
    376             obj, end = self.scan_once(s, idx)
    377         except StopIteration:
--> 378             raise ValueError("No JSON object could be decoded")
    379         return obj, end

ValueError: No JSON object could be decoded

[Daenyth]

I just tried making that API request using curl, and it worked with no issue, so it has to be some problem in the zencoder library.

[schworer]

Great, I'll do some testing and add some more error handling around using the per_page parameter. Thanks for your help!

[Daenyth]

Thanks for the quick response :)

Glad to help out with it; it's a very useful library.