david-sarah [Thu, 14 Jun 2012 21:23:08 +0000 (21:23 +0000)]
Suppress DeprecationWarning about twisted.internet.interfaces.IFinishableConsumer. This also unifies the handling of DeprecationWarnings that need to be suppressed globally. refs #1295
Brian Warner [Thu, 14 Jun 2012 19:17:55 +0000 (12:17 -0700)]
test/common.py: fix race condition waiting for the helper connection
The wait_for_connections() method, which is used at the start of
test_system to make sure that all the clients are connected to all the
servers, did not also wait for clients to be connected to their Helpers.
Every once in a while, the helper connection would take a bit longer,
and then
test_system.SystemTest.test_filesystem._test_web._got_welcome_helper
would fail, because we'd check for a helper connection before it was
ready.
The fix is to modify wait_for_connections's polling predicate to look
for helper connections (if configured) as well as the regular
introducer- and server- connections.
Tested by temporarily adding a large (30s) delay to the connectTo() call
in Uploader.startService, simulating a long helper
connection-establishment delay. This makes the test fail consistently.
Then I fixed wait_for_connections(), and the test passed (slowly). Then
I removed the delay.
Brian Warner [Tue, 12 Jun 2012 21:37:27 +0000 (14:37 -0700)]
introweb: the Subscribed Clients list shows tubids, not serverids
Improve the column headers to make it clear that this list shows Tub
IDs. (we can't show pubkey-based serverids because clients don't give
those to us: only servers provide pubkeys). This should be the only
place in the whole webapi that shows TubIDs for modern (V2-introducer)
nodes.
Brian Warner [Tue, 12 Jun 2012 21:01:24 +0000 (14:01 -0700)]
Display serverids consistently as 8-char pubkey, or 6-char tubid.
This makes it easy to distinguish between old V1-Introducer
nodes (identified by their Foolscap TubID) and new V2 nodes (identified
by their ed25519 pubkey).
This fixes a few places where we used to display a tubid even if we had
a pubkey, making it hard to visually correlate servers in two different
displays. It also cleans up the way we pass serverids to the JS-based
download timeline.
The "introweb" subscribed-clients list still shows tubids.
Brian Warner [Tue, 12 Jun 2012 01:22:35 +0000 (18:22 -0700)]
test_system.py: clean up control flow, reduce use of stall()
The _upload_resumable() test interrupts a Helper upload partway
through (by shutting down the Helper), then restarts the Helper and
resumes the upload. The control flow is kind of tricky: to do anything
"partway through" requires adding a hook to the Uploadable. The previous
flow depended upon a (fragile) call to self.stall(), which waits a fixed
number of seconds.
This removes one of those stall() calls (the remainder is in
test/common.py and I'll try removing it in a subsequent revision). It
also removes some now-redundant wait_for_connections() calls, since
bounce_client() doesn't fire its Deferred until the client has finished
coming back up (and uses wait_for_connections() internally to do so).
Brian Warner [Tue, 12 Jun 2012 01:16:02 +0000 (18:16 -0700)]
offloaded.py: don't drop the Deferred
There was one corner case (where the client disconnects at just the
wrong time) that could have dropped a Deferred, leading to an Unhandled
Error. Clean up the control flow to avoid this case.
Brian Warner [Mon, 11 Jun 2012 01:14:55 +0000 (18:14 -0700)]
client.py: rename "server key" to "node key", use old name if present
This prepares for invitation-based reciprocal-permission Accounting. In
the scheme I'm developing, nodes publish "I accept shares from Y"
messages, which are assembled into a graph, and server will accept
shares from any client node reachable in this graph. For this to work,
the serverX->clientY edge must be connectable to the serverY->clientZ
edge, which means "clientY" and "serverY" must be connected. If clientY
and serverY are two distinct keys, they must be cross-signed. Life is
easier if there's just one key "Y", rather than distinct client- and
server- keys. Calling this one key "server.privkey" would be confusing.
"node.privkey" and "node.pubkey" makes more sense.
One-server-per-node is a pretty easy restriction. Originally I was
thinking that the client.key should be provided in each webapi call,
just like a filecap is, making a single node useable by multiple users
(Accounting principals), and not providing any ambient storage
authority. But I've been unable to think of a comfortable WUI for
that (at least without requiring javascript), nor a friendly way to
transfer account authority (e.g. writecaps that include storage
authority). So I'm more willing to have one-client-per-node these days.
(and note that this rename doesn't seriously preclude
many-clients-per-node or zero-clients-per-node anyways, it just makes
one-client-per-node less awkward)
Brian Warner [Fri, 25 May 2012 19:58:28 +0000 (12:58 -0700)]
CheckResults corrupt/incompatible shares now return IServers
DeepResultsBase also has a get_corrupt_shares(), and it is populated
from CheckResults.get_corrupt_shares(). It has been updated too, along
with get_remaining_corrupt_shares().
Remove temporary get_new_corrupt_shares() and
get_new_incompatible_shares().
Brian Warner [Fri, 25 May 2012 19:56:03 +0000 (12:56 -0700)]
CheckResults: pass IServer to sharemap=, but get_sharemap() returns serverids
This changes all code which feeds CheckResults(sharemap=) to provide
IServer instances, but CheckResults converts these to old-style
serverids during output, so downstream code doesn't have to change yet.
It adds a temporary get_new_sharemap(), which *does* return IServer
instances, so the immutable repairer can build new CheckResults from an
old one. This will go away when get_sharemap() is updated to return
IServer (and downstream code is updated too).
Brian Warner [Fri, 25 May 2012 07:13:23 +0000 (00:13 -0700)]
change CheckResults to use a fat set_data()
i.e. change set_data() to accept lots of parameters, instead of taking
a single dictionary with lots of keys. Also Convert all CheckResults
creators to use it.
Brian Warner [Tue, 15 May 2012 04:57:43 +0000 (21:57 -0700)]
CheckResults: start hiding .data, first step to clean it up
The goal is to make CheckResults more strongly typed, and remove the
ambiguous ".data" field in favor of a bunch of specific counters and
sharelists, so I can changes .sharemap and .servermap to use IServer
instances instead of string serverids. By cleaning this up first, I hope
to get that task done with less debugging.
david-sarah [Thu, 31 May 2012 22:00:00 +0000 (22:00 +0000)]
Change 'setup.py test' and 'setup.py trial' to pass --rterrors to trial by default. Suppress using --no-rterrors. Also pass --until-failure/-u to trial. fixes #1699
Brian Warner [Tue, 22 May 2012 22:18:26 +0000 (15:18 -0700)]
test_web.py: fix memory leak when run with --until-failure
The Fake*Node classes in test/common.py were accumulating share data in
a class-level dictionary, which persisted from one test run to the next.
As a result, running test_web.py over and over (with trial's
--until-failure feature) made this dictionary grow without bound,
eventually running out of memory.
This fix moves that dictionary into the FakeClient built fresh for each
test, so it doesn't build up. It does the same thing for "file_types",
which was much smaller but still lived at the class level.
Brian Warner [Tue, 22 May 2012 04:18:25 +0000 (21:18 -0700)]
UploadResults: store IServers internally, but still return serverids
This stores IDisplayableServer-providing instances (StubServers or
NativeStorageServers) in the .servermap and .sharemap dictionaries. But
get_servermap()/get_sharemap() still return data structures with
serverids, not IServers, by translating their data on the way out. This
lets us put off changing the callers for a little bit longer.
Brian Warner [Tue, 22 May 2012 04:17:27 +0000 (21:17 -0700)]
split IDisplayableServer from IServer, add sb.get_stub_server()
IDisplayableServer includes just enough functionality to call
.get_name() and friends, which is all that the UploadResults really
need. IServer is a superset that includes actual share-manipulation
methods. StubServer instances provide only IDisplayableServer, while
actual NativeStorageServer instances provide the full IServer interface.
When the Helper sends a serverid (so we know what to call the server but
nothing else about it, and have no corresponding NativeStorageServer
object to reference), but we want to store an IDisplayableServer in the
UploadResults, we create a synthetic StubServer "server" and store that
instead.
Brian Warner [Tue, 22 May 2012 04:14:44 +0000 (21:14 -0700)]
switch UploadResults to use get_uri(), hide internal ._uri
Complete the getter-based transformation, by hiding ".uri" and updating
callers to use get_uri(). Also don't set a dummy self._uri, leave it
undefined until someone calls set_uri().
Brian Warner [Tue, 22 May 2012 04:14:28 +0000 (21:14 -0700)]
switch UploadResults to use getters, hide internal data, for all but .uri
This hides attributes with e.g. _sharemap, and creates getters like
get_sharemap() to access them, for every field except .uri . This will
make it easier to modify the internal representation of .sharemap
without requiring callers to adjust quite yet.
".uri" has so many users that it seemed better to update it in a
subsequent patch.
Brian Warner [Tue, 22 May 2012 04:14:14 +0000 (21:14 -0700)]
convert UploadResults to a fat init
Populate most of UploadResults (except .uri, which is learned later when
using a Helper) in the constructor, instead of allowing creators to
write to attributes later. This will help isolate the fields that we
want to change to use IServers.
Brian Warner [Tue, 22 May 2012 04:14:00 +0000 (21:14 -0700)]
add HelperUploadResults
This splits the pb.Copyable on-wire object (HelperUploadResults) out
from the local results object (UploadResults). To maintain compatibility
with older Helpers, we have to leave pb.Copyable classes alone and
unmodified, but we want to change UploadResults to use IServers instead
of serverids. So by using a different class on the wire, and translating
to/from it on either end, we can accomplish both.
This measured how long the Helper took to do a filecheck before asking
for ciphertext. The "Contacting Helper" report includes both
existence_check and the client-helper RTT.
For non-overlapping uploads, it was being returned correctly. But when
multiple upload requests overlapped, and the file was not already in the
grid, the filecheck would only run once, and its existence_check time
would be reported for all uploaders (even if they didn't have to wait
for that time). Cleaning that up proved too difficult: the only correct
place to report this time is from the initial remote_upload_chk() call,
but the return value of that is too constrained to accomodate it in the
needs-upload case.
So I'm removing it altogether. Eventually I plan to add a proper
events/times field and record more data, including this check, in a form
that can be drawn on a nice zoomable timeline view.
Old clients talking to a new Helper (which doesn't supply the value)
will tolerate the loss (they'll just display an empty field on the web
view).
david-sarah [Wed, 16 May 2012 02:47:25 +0000 (02:47 +0000)]
Simplifications resulting from requiring Python 2.5 and therefore being able to use sqlite3 from the standard library. This also drops sqlite3 from the set of versions and paths we report.
david-sarah [Fri, 18 May 2012 02:12:52 +0000 (02:12 +0000)]
misc/build_helpers/check-interfaces.py: avoid spurious warnings about ignored exceptions on shutdown. Also make the check function able to write errors to an arbitrary stream.
Brian Warner [Wed, 16 May 2012 23:50:57 +0000 (16:50 -0700)]
dictutil.DictOfSets: remove .union() method, it was misleading
Unlike set.union(), which returns a new set, DictOfSets.union() modified
the DictOfSets in-place. The name collision bit me when I changed some
code from using DictOfSets to a normal set, and expected that
set.union() would modify the set in-place. Since there was only one user
of DictOfSets.union, I figured it was safer to just get rid of it.
If a server did not respond to the pre-repair filecheck, but did respond
to the repair, that server was not correctly added to the
RepairResults.data["servers-responding"] list. (This resulted from a
buggy usage of DictOfSets.union() in filenode.py).
In addition, servers to which filecheck queries were sent, but did not
respond, were incorrectly added to the servers-responding list
anyawys. (This resulted from code in the checker.py not paying attention
to the 'responded' flag).
The first bug was neatly masked by the second: it's pretty rare to have
a server suddenly start responding in the one-second window between a
filecheck and a subsequent repair, and if the server was around for the
filecheck, you'd never notice the problem. I only spotted the smelly
code while I was changing it for IServer cleanup purposes.
I added coverage to test_repairer.py for this. Trying to get that test
to fail before fixing the first bug is what led me to discover the
second bug. I also had to update test_corrupt_file_verno, since it was
incorrectly asserting that 10 servers responded, when in fact one of
them throws an error (but the second bug was causing it to be reported
anyways).
Brian Warner [Mon, 14 May 2012 20:32:03 +0000 (13:32 -0700)]
write node.url and portnum files atomically, to fix race in test_runner
Previously, test_runner sometimes fails because the _node_has_started()
poller fires after the portnum file has been opened, but before it has
actually been filled, allowing the test process to observe an empty file,
which flunks the test.
This adds a new fileutil.write_atomically() function (using the usual
write-to-.tmp-then-rename approach), and uses it for both node.url and
client.port . These files are written a bit before the node is really up and
running, but they're late enough for test_runner's purposes, which is to know
when it's safe to read client.port and use 'tahoe restart' (and therefore
SIGINT) to restart the node.
The current node/client code doesn't offer any better "are you really done
with startup" indicator.. the ideal approach would be to either watch the
logfile, or connect to its flogport, but both are a hassle. Changing the node
to write out a new "all done" file would be intrusive for regular
operations.
Brian Warner [Sun, 13 May 2012 07:41:53 +0000 (00:41 -0700)]
webapi: don't allow ETags in t=info or t=rename-form, both are variable
t=info contains randomly-generated ophandles, and t=rename-form contains the
name of the child being renamed, so neither is eligible for a
short-circuiting ETag. Enhanced test_web to exercise this. Had to improve
FakeCHKFileNode slightly to let it participate. Refs #443.
When client does a conditional GET/HEAD with If-none-match:, if the condition
fails (ie, the client's ETag matches the file's) then we can short-circuit
the whole process and immediately return an empty body.
Like immutable files, the ETag is based on the storage index. However, since
a directory is a special interpretation of a file, it is distinguished from
the file by prepending "DIR:" onto the start of the ETag, and adding
-representation on the end (where -representation is the ?t= argument, json,
info, etc).
It also checks the return of setETag and avoids generating a representation
if the client already has it.
It turns out that TarFile.addfile() doesn't provide a reasonable default
timestamp, resulting in files dated to 1970 (they're probably wearing
bell-bottoms and listening to disco too). Then, when the bdist_egg command
tries to create a *zip*file with those files, it explodes because zipfiles
cannot handle timestamps before 1980 (it prefers boomboxes and jackets with
straps on the shoulders, thank you very much).
This puts a modern time.time() on the members of the tarfile, allowing future
cryptocoderarchaeologists the opportunity to make fun of fashion trends from
the user's chosen era, rather than an artificially older one.
david-sarah [Sat, 31 Mar 2012 22:41:22 +0000 (22:41 +0000)]
Add 'tahoe debug flogtool' command, test for --help, and docs. This version gets the help synopses more correct, and changes the doc to say that this command is added in 1.10.0 rather than 1.9.2. fixes #1693
Zooko [Sun, 13 May 2012 02:59:59 +0000 (19:59 -0700)]
rename build_helpers files
This is from the darcs patch for #1342, which failed to apply on my darcs
tree, so I'm landing it from git. I'm landing the rename-files part
separately from the modify-those-files part to avoid VC complications.
Brian Warner [Wed, 9 May 2012 21:18:27 +0000 (14:18 -0700)]
webapi 'move'-button cleanups
test_web.py: use shouldFail2(), safer than old shouldFail()
directory.py: forbid slashes in from_name=, return BAD_REQUEST instead of
GONE when trying to move into a non-directory
Marcus Wanner [Sat, 19 Nov 2011 01:42:10 +0000 (20:42 -0500)]
Change the arbitrary URI support from implied to explicit
The move webapi function now takes a target_type argument which lets it
know whether the target is a subdirectory name or URI. This is an
improvement over the old system in which the move handler tried to guess
whether the target was a name or a URI. Also fixed a little docs
copypaste problem and tweaked some line wrapping.
Marcus Wanner [Thu, 10 Nov 2011 08:00:11 +0000 (03:00 -0500)]
Adding 'move' button to web UI, closes #1579
This adds "move file" capability to the web UI's directory display. The
support and test framework is heavily based on the similar "rename file"
feature. Unit tests and documentation are included. Multiple in-progress
versions of this patch may be found in ticket 1579. This version
includes arbitrary URI target support and is compatible with the change
from tahoe_css to tahoe.css.
Brian Warner [Tue, 24 Apr 2012 05:37:28 +0000 (01:37 -0400)]
introweb announcements: show serverid, not tubid
'serverid' is the pubkey (for V2 clients), falling back to the tubid (for V1
clients). This also required cleaning up the way the index is created for the
old V1 introducer.
Brian Warner [Mon, 23 Apr 2012 22:02:22 +0000 (18:02 -0400)]
Fix introweb display for mixed V1/V2 clients. Closes #1721.
This significantly cleans up the IntroducerServer web-status renderers.
Instead of poking around in the introducer's internals, now the web-status
renderers get clean AnnouncementDescriptor and SubscriberDescriptor
objects. They are still somewhat foolscap-centric, but will provide a clean
abstraction boundary for future improvements.
The specific #1721 bug was that old (V1) subscribers were handled by
wrapping their RemoteReference in a special WrapV1SubscriberInV2Interface
object, but the web-status display was trying to peek inside the object to
learn what host+port it was associated with, and the wrapper did not proxy
those extra attributes.
A test was added to test_introducer to make sure the introweb page renders
properly and at least contains the nicknames of both the V1 and V2 clients.
Change capitalization of WUI and introducer welcome page headings; add test for introducer welcome page. Also fix a typo in a CSS class name. fixes #1708
Brian Warner [Wed, 4 Apr 2012 19:11:03 +0000 (12:11 -0700)]
test/common.py: remove ununsed 'is_bad' mechanism
This was a premature feature addition to the mock filenode, and gets in the
way of the IServer refactoring I'm trying to do. Best to remove it now and
re-introduce it in a better form later when it's actually needed.