On Jul 22, 2013, at 12:15 PM, Hernán Morales Durand <hernan.mora...@gmail.com> wrote:
> Hi Sven, > It worked perfectly now, it is really nice to have a library like Zinc. + 1 Infrastructure always pays off. Stef > Thank you! > > Hernán > > El 22/07/2013 5:37, Sven Van Caekenberghe escribió: >> Hi Hernán, >> >> It is great that you are using ZnClient and are providing feedback. >> >> On 21 Jul 2013, at 08:58, Hernán Morales Durand <hernan.mora...@gmail.com> >> wrote: >> >>> I'm testing the OpenCalais web service. This is a web service which >>> needs an API key to be used (registering takes only 1 minute in >>> http://www.opencalais.com/APIkey). To check the service first I've used >>> a Python script, taken from [1] >>> >>> import httplib2 >>> import json >>> LOCAL_API_KEY = '' # Aquire this by registering at the Calais site >>> CALAIS_TAG_API = 'http://api.opencalais.com/tag/rs/enrich' >>> # Some sample text from a news story to pass to Calais for analysis >>> test_body = """ >>> Some huge announcements were made at Apple's Worldwide Developer's >>> Conference Monday, including the new mobile operating system iOS 5, PC >>> software OS X Lion, and the unveiling of the iCloud. >>> """ >>> # header information need by Calais. For more info see >>> http://www.opencalais.com/documentation/calais-web-service-api/api-invocation/rest >>> headers = { >>> 'x-calais-licenseID': LOCAL_API_KEY, >>> 'content-type': 'text/raw', >>> 'accept': 'application/json', >>> } >>> # Create your http object >>> http = httplib2.Http() >>> # Make the http post request, passing the body and headers as needed. >>> response, content = http.request(CALAIS_TAG_API, 'POST', >>> headers=headers, body=test_body) >>> jcontent = json.loads(content) # Parse the json return into a python dict >>> print json.dumps(jcontent, indent=4) # Pretty print the resulting >>> dictionary returned. >>> >>> The Python script works fine for me. I have tried to translate the code >>> above, but my version in Pharo 2.0 using Zinc returns "I Read a >>> ZnResponse(415 Unsupported Media Type text/plain 365B)" >>> >>> | httpClient localApiKey | >>> localApiKey := ''. " my API key " >>> httpClient := ZnClient new >>> logToTranscript; >>> url: 'http://api.opencalais.com/tag/rs/enrich'; >>> method: #POST; >>> headerAt: 'x-calais-licenseID' put: localApiKey; >>> headerAt: 'accept' put: 'application/json'; >>> headerAt: 'content-Type' put: 'text/raw'; >>> contents: 'Some huge announcements were made at Apple''s >>> Worldwide >>> Developer''s Conference Monday, including the new mobile operating >>> system iOS 5, PC software OS X Lion, and the unveiling of the iCloud.'. >>> httpClient execute. >>> >>> Additionally the request returns the following message: >>> >>> 'Document conversion error. Please make sure that the content-type >>> (passed through the paramsXML) matches this document contents. >>> [ErrorMessage: >>> com.clearforest.platform.system.CLFRuntimeException: There is no >>> converter for this type of URI >>> "file:/C:/CLFSW/v71/ct/bin/../../../v71/ct/var/dptemp/prvt/228295-app9/dp/papi/data/1374378595643-DF317E60-6634505.asc" >>> ]' >>> >>> From what I could see, a difference is the 'text/raw' >>> content-type is passed in Python's httplib2, but in Zinc is overriding >>> by 'text/plain' it in #acceptEntityDescription: ? Any hints? >> >> You were _very_ close. Indeed #contents: by default (without an explicit >> #contentReader set) will do something very generic. Setting the content-type >> as a header won't change the fact that the content-type of the entity wins, >> as you correctly said, in #acceptEntityDescription: >> >> The solution is to explicitly make your own entity, like this: >> >> | httpClient localApiKey text | >> localApiKey := 'xxx'. " my API key " >> text := 'Some huge announcements were made at Apple''s Worldwide >> Developer''s Conference Monday, including the new mobile operating >> system iOS 5, PC software OS X Lion, and the unveiling of the >> iCloud.'.httpClient := ZnClient new >> systemPolicy; >> url: 'http://api.opencalais.com/tag/rs/enrich'; >> headerAt: 'x-calais-licenseID' put: localApiKey; >> entity: (ZnEntity with: text type: 'text/raw'); >> accept: 'application/json'; >> contentReader: [ :entity | NeoJSONReader fromString: entity contents ]; >> post. >> >> Since content comes back as JSON, I parsed it already using NeoJSON (which >> you can easily load using the configuration browser). Using #systemPolicy >> will ensure that you get an error when the result is not 200 OK and >> application/json. >> >> It worked for me: I made an account and got a result back. >> >> HTH, >> >> Sven >> >>> Hernán >>> >>> [1] >>> http://www.flagonwiththedragon.com/2011/06/08/dead-simple-python-calls-to-open-calais-api/ >> >> >> -- >> Sven Van Caekenberghe >> Proudly supporting Pharo >> http://pharo.org >> http://association.pharo.org >> http://consortium.pharo.org >> >> >> >> >> >> > >
