25 |
25 |
26 from cubicweb.web import DirectResponse |
26 from cubicweb.web import DirectResponse |
27 from cubicweb.web.request import CubicWebRequestBase |
27 from cubicweb.web.request import CubicWebRequestBase |
28 from cubicweb.web.httpcache import GMTOFFSET |
28 from cubicweb.web.httpcache import GMTOFFSET |
29 from cubicweb.web.http_headers import Headers |
29 from cubicweb.web.http_headers import Headers |
30 from cubicweb.etwist.http import not_modified_response |
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31 |
30 |
32 |
31 |
33 class CubicWebTwistedRequestAdapter(CubicWebRequestBase): |
32 class CubicWebTwistedRequestAdapter(CubicWebRequestBase): |
34 def __init__(self, req, vreg, https): |
33 def __init__(self, req, vreg, https): |
35 self._twreq = req |
34 self._twreq = req |
55 """ |
54 """ |
56 path = self._twreq.uri[1:] # remove the root '/' |
55 path = self._twreq.uri[1:] # remove the root '/' |
57 if not includeparams: |
56 if not includeparams: |
58 path = path.split('?', 1)[0] |
57 path = path.split('?', 1)[0] |
59 return path |
58 return path |
60 |
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61 def _validate_cache(self): |
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62 """raise a `DirectResponse` exception if a cached page along the way |
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63 exists and is still usable |
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64 """ |
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65 if self.get_header('Cache-Control') in ('max-age=0', 'no-cache'): |
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66 # Expires header seems to be required by IE7 |
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67 self.add_header('Expires', 'Sat, 01 Jan 2000 00:00:00 GMT') |
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68 return |
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69 # when using both 'Last-Modified' and 'ETag' response headers |
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70 # (i.e. using respectively If-Modified-Since and If-None-Match request |
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71 # headers, see |
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72 # http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.3.4 for |
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73 # reference |
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74 last_modified = self.headers_out.getHeader('last-modified') |
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75 if last_modified is not None: |
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76 status = self._twreq.setLastModified(last_modified) |
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77 if status != http.CACHED: |
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78 return |
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79 etag = self.headers_out.getRawHeaders('etag') |
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80 if etag is not None: |
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81 status = self._twreq.setETag(etag[0]) |
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82 if status == http.CACHED: |
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83 response = not_modified_response(self._twreq, self._headers_in) |
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84 raise DirectResponse(response) |
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85 # Expires header seems to be required by IE7 |
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86 self.add_header('Expires', 'Sat, 01 Jan 2000 00:00:00 GMT') |
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