Related to ticket:3247
test_storage.py wants a `StorageStatus::renderSynchronously()` method
and a `StorageStatus::renderHTTP()` method. Let us begin with the
goofy first-cut.
Both these methods are not only wrong, but they will also not please
the test suite. However error messages produced in CI can be shared,
and that way I can hopefully get unstuck.
Related to ticket:3247. Nevow usage has been removed, and generated
page looks the same as its former self, but tests are failing because
test_storage.py assumes that we're using nevow.
* emit lease expiry date in ISO-8601'ish format as well as Brian's format
* rename iso_utc_time_to_localseconds() to iso_utc_time_to_seconds()
* add iso_utc_date()
* simplify the body of iso_utc_time_to_seconds()
This walks slowly through all shares, examining their leases, deciding which
are still valid and which have expired. Once enabled, it will then remove the
expired leases, and delete shares which no longer have any valid leases. Note
that there is not yet a tahoe.cfg option to enable lease-deletion: the
current code is read-only. A subsequent patch will add a tahoe.cfg knob to
control this, as well as docs. Some other minor items included in this patch:
tahoe debug dump-share has a new --leases-only flag
storage sharefile/leaseinfo code is cleaned up
storage web status page (/storage) has more info, more tests coverage
space-left measurement on OS-X should be more accurate (it was off by 2048x)
(use stat .f_frsize instead of f_bsize)
