This makes IServer instances responsible for their own network
connections, which will help when we add HTTP-based servers in the
future. The StorageFarmBroker should not care about how the IServer uses
the network, it just provides the announcement (and local config).
This fixes some of the upcoming-deprecation warnings against Foolscap
(>=0.11.0). There are still a bunch related to the key-generator and the
stats gatherer.
This avoids a privacy leak when the web.static= directory is configured
but doesn't exist (which is almost always, since we set `web.static =
public_html` in the default config file, but nothing automatically
creates it). The nevow.static.File class tries to os.stat() the
directory before doing anything else, which causes an exception, which
renders the traceback to the HTTP client as a 500 Internal Server Error,
and the traceback includes the full path of the missing public_html
directory, which reveals the node's basedir.
Plain twisted.web.static.File doesn't do this check, and a missing
web.static directory just results in a plain old 404.
Closes ticket:1720.
Change the Node/Client startup process to set the Tub location during
`__init__`, rather than after the reactor starts up. This simplifies the
init process considerably, because components (like StorageServer and
IntroducerClient) can do their tub.registerReferences() immediately.
This addresses most of the runtime changes called for in ticket:2491,
but not the node-creation changes.
This can be done synchronously because we now know the port number
earlier. This still uses get_local_addresses_sync() (not _async) to do
automatic IP-address detection if the config file didn't set
tub.location or used the special word "AUTO" in it.
The new implementation slightly changes the mapping from tub.location to
the assigned location string. The old code removed all instances of
"AUTO" from the location and then extended the hints with the local
ones (so "hint1:AUTO:hint2" turns into "hint1:hint2:auto1:auto2"). The
new code exactly replaces each "AUTO" with the local hints (so that
example turns into "hint1:auto1:auto2:hint2", and a silly
"hint1:AUTO:AUTO" would turn into "hint1:auto1:auto2:auto1:auto2"). This
is unlikely to affect anybody.
This is the first step towards making node startup be synchronous: the
tub.port is entirely determined (including any TCP port allocation that
might be necessary) before creating the Tub, so the portnumber part of
FURLs can be determined earlier.
This test was depending upon the storage announcement happening *after*
startup, but the upcoming synchronous-Tub-startup change will modify the
ordering. Fix it in both cases by disabling storage in the client being
tested.
This has worked so far because everything waited for the Tub to be
ready. We'll soon be making Tub setup synchronous, so we won't have to
wait anymore, so the order will matter.
This reverts commit bb7184163e.
We changed test_runner.BinTahoe.run_bintahoe since this commit landed:
the new version can no longer cause the test to be skipped late (we've
gotten rid of the bin/tahoe script entirely, so it's no longer possible
for us to miss it). Hence I think we don't need this unsightly stall any
longer.
This makes it possible for automated-upload tools (like drop-upload and
magic-folders) to be told when there are "enough" servers connected for
uploads to be successful. This should help prevent the pathological case
where the tools attempt to upload files immediately after node
startup (or before the user turns on their wifi connection), and the
node stores all the shares on itself.
This new notification is single-shot and edge-triggered: when it fires,
you know that, at some point in the past, the node *was* connected to at
least $threshold servers. However you might have lost several
connections since then. The user might turn off wifi after this fires,
causing all connections to be dropped.
In the long run, this API will change: clients will receive continuous
notifications about servers coming and going, and tools like
magic-folder should refrain from uploading during periods of
insufficient connection. It might be as simple as checking the size of
the connected server list when a periodic timer goes off, or something
more responsive like an edge-triggered "upload as soon as you can"
observer.
Meejah pointed out that new users might think the encoding parameters
are fixed, something you must pick correctly when you first set up the
node, and then are never allowed to change again, which is kind of
anxiety-inducing. This updates the comment to explain that the encoding
is stored in each filecap, and the tahoe.cfg values are only used for
newly-uploaded files.
