static-file: properly set/use cache header for static file (closes #2255013) This changesets enables the standard http cache mechanism where the static controller may reply "304 Not modified" based on `last-modified` in HTTP response and `if-modified-since` in HTTP query. The last modified time is computed using the file-system information. The pre-existing logic using an `Expires` header to prevent client from sending request stay in place. The new logic just prevents sending the file again if not necessary.

     1

     2

try:

     3

    rtype, = __args__

     4

except ValueError:

     5

    print 'USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>'

     6

    print

     7

     8

graph = {}

     9

for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):

    10

    graph.setdefault(fromeid, []).append(toeid)

    11

    12

from logilab.common.graph import get_cycles

    13

    14

for cycle in get_cycles(graph):

    15

    print 'cycle', '->'.join(str(n) for n in cycle)