Python File.get_by_key_name方法代码示例

# 需要导入模块: from models import File [as 别名]
# 或者: from models.File import get_by_key_name [as 别名]
    def delete(self, file_uuid):
        file = File.get_by_key_name(file_uuid)

        if file:
            map(lambda f: f.delete(), file.fragments)
            file.delete()
        else:
            self.error(404)

# 需要导入模块: from models import File [as 别名]
# 或者: from models.File import get_by_key_name [as 别名]
    def get(self, file_uuid):
        file = File.get_by_key_name(file_uuid)

        if file:
            self.response.headers['Last-Modified'] = http_format_date(file.last_modified)
            self.response.headers['Cache-Control'] = 'max-age=%d' % config.cache_expiry

            if_modified_since = http_parse_date(self.request.headers.get('If-Modified-Since', None))
            if if_modified_since and if_modified_since >= file.last_modified.replace(microsecond=0):
                self.response.set_status(304)
            else:
                self.response.headers['Content-Disposition'] = 'inline; filename=%s' % file.name
                self.response.headers['Content-Type'] = file.content_type
                self.response.headers['Expires'] = http_format_date(time() + config.cache_expiry)

                for fragment in file.fragments:
                    self.response.out.write(fragment.data)
        else:
            self.error(404)

# 需要导入模块: from models import File [as 别名]
# 或者: from models.File import get_by_key_name [as 别名]
 def get(self):
   self.response.headers['Content-Type'] = 'text/plain'
   devhelp_url = '\n\nPlease visit http://www.dynmirror.net/help/developers/ for more information.'
   #If url is given, use that as the digest
   digest = os.path.basename(self.request.path)
   if len(digest) and not digest.endswith('.metalink'):
     return self.not_found('404 not found: If you do file look-ups by digest, it needs to end in ".metalink".' + devhelp_url)
   digest = digest[:-len('.metalink')]
   digests = {}
   url = self.request.get('url')
   fileLink = LinkElement()
   
   if len(url):
     #Try to load the digest from the database
     url = File.urlparse(url).geturl()
     
     #Add Coral link if wanted
     if self.request.get('coral', default_value = 'not_set') != 'not_set':
       cu = urlparse.urlparse(url) #Parse for the coral url
       if cu.scheme == 'http' and not cu.netloc.endswith('.nyud.net'):
         fileLink.urls.append({'v': 'http://' + cu.hostname + '.nyud.net' + cu.path, 'a':{'type': File.urlparse(url).scheme}})
     Hit(path = self.request.path, remote_addr = self.request.remote_addr, referer = self.request.headers.get('referer', ''), comment = url).save()
     f = File.get_by_key_name(url)
     if f == None:
       #Host a link only metalink
       fileLink.name = os.path.basename(url)
       fileLink.urls.insert(0, {'v': url, 'a':{'type': File.urlparse(url).scheme}})
       self.response.headers['Content-Type'] = 'application/metalink+xml'
       self.response.headers['Content-Disposition'] = 'attachment; filename="%s.metalink"' % os.path.basename(url).replace('"', '\\"')
       return self.render_to_response('metalink.xml', {'files': [fileLink], 'comment': 'Link only, because no validated link information could be found in the database. Make sure you use the _exact_ url you used to add the metadata.'})
     #inherit all the digest information from the file in db
     fileLink.name = f.name
     fileLink.size = f.size
     fileLink.digests.update(f.digests())
     if len(digest) > 0:
       return self.response.out.write('For security reasons, you can not combine digest and url, because we can not determine which is authorative and what to do in case they do not match in the database.' + devhelp_url)
   
   if len(digest) > 0:
     #Malformed digest
     if not hash_sizes.has_key(len(digest)):
       return self.not_found('404 Not Found, the digest is considered malformed. Make sure it is lowercase hex representing an MD5, SHA1, SHA256 or SHA512.' + devhelp_url)
     if not lower_hex_regex.match(digest):
       return self.not_found('404 Not Found, the digest is considered malformed because it did not match /[0-9a-f]/.' + devhelp_url)
     #OK, so a digest is given, set the digest in the fileLink to the given value
     fileLink.digests[hash_sizes[len(digest)]] = digest
   
   #TODO Unique hosts; hosts = set
   #Explode the file using all known digests, both url and digest
   names = {}
   sizes = {}
   cntry_regex = re.compile('.*\.(a[cdefgilmnoqrstuwxz]|c[acdfghiklmnoruvxyz]|b[abdefghijmnorstvwyz]|e[ceghrstu]|d[ejkmoz]|g[abdefghilmnpqrstuwy]|f[ijkmor]|i[delmnoqrst]|h[kmnrtu]|k[eghimnprwyz]|j[emop]|m[acdeghklmnopqrstuvwxyz]|l[abcikrstuvy]|o[m]|n[acefgilopruz]|q[a]|p[aefghklmnrstwy]|s[abcdeghijklmnortuvyz]|r[eosuw]|u[agkmsyz]|t[cdfghjklmnoprtvwz]|w[fs]|v[aceginu]|y[etu]|z[amw])$')
   for digest_type in fileLink.digests:
     files = File.all().filter('%s = ' % digest_type, fileLink.digests[digest_type]).fetch(20)
     for f in files:
       attr = {'type': 'http'}#Optimization, currently only HTTP supported f.scheme
       cntry = cntry_regex.match(f.hostname)
       if cntry:
         attr['location'] = cntry.group(1)
       fileLink.urls.append({'v': f.url(), 'a': attr})
       names.setdefault(f.name, 0)
       names[f.name] += 1
       sizes.setdefault(f.size, 0)
       sizes[f.size] += 1
   
   #If a name is given, just rename the file
   name = self.request.get('name')
   if name:
     fileLink.name = name
   if not fileLink.name:
     #Democratic naming
     names = [(names[k], k) for k in names]
     names.sort()
     fileLink.name = names[-1][1]
   if not fileLink.size:
     #Democratic size
     sizes[0] = 0
     sizes = [(sizes[k], k) for k in sizes]
     sizes.sort()
     fileLink.size = sizes[-1][1]
   random.shuffle(fileLink.urls)      
   self.response.headers['Content-Type'] = 'application/metalink+xml'
   self.response.headers['Content-Disposition'] = 'attachment; filename="%s.metalink"' % os.path.basename(fileLink.name).replace('"', '\\"')
   return self.render_to_response('metalink.xml', {'files': [fileLink]})