follow-up https://github.com/spesmilo/electrum/pull/8536
This replaces 69336befee, which was insufficient.
#8536 added a new field into the struct, which older versions do not ignore but raise:
opening a wallet file with new code updated the struct to include it,
after which old code could no longer open the wallet file.
i.e. #8536 was an invisible wallet upgrade, breaking compat.
This commit simply formalises the wallet upgrade: old code will now show
an understandable error when trying to open new files.
The input_qr_from_screenshot functionality is broken on some Linux machines:
on some machines, `screen.grabWindow(0)` returns an all-black image.
In such cases, instead of telling the user "No QR code was found on the screen",
we will tell them "Failed to take screenshot".
To test:
`QApplication.instance().primaryScreen().grabWindow(0).save("/home/user/wspace/tmp/pic2.png", "png")`
Tested on:
- machine 1:
- ubuntu 22.04, gnome, wayland
- pyqt.version: 5.15.9
- qt.version: 5.15.2
=> gets all-black image for screenshot
- machine 2:
- manjaro, kde, x11
- pyqt.version: 5.15.9
- qt.version: 5.15.8
=> screenshot works
I guess it might be due to x11 vs wayland.
```
191.73 | D | i/interface.[btc.electroncash.dk:60002] | (disconnect) trace for RPCError(-32603, 'internal error: bitcoind request timed out')
Traceback (most recent call last):
File "...\electrum\electrum\interface.py", line 514, in wrapper_func
return await func(self, *args, **kwargs)
File "...\electrum\electrum\interface.py", line 537, in run
await self.open_session(ssl_context)
File "...\electrum\electrum\interface.py", line 687, in open_session
async with self.taskgroup as group:
File "...\aiorpcX\aiorpcx\curio.py", line 304, in __aexit__
await self.join()
File "...\electrum\electrum\util.py", line 1309, in join
task.result()
File "...\electrum\electrum\interface.py", line 724, in request_fee_estimates
async with OldTaskGroup() as group:
File "...\aiorpcX\aiorpcx\curio.py", line 304, in __aexit__
await self.join()
File "...\electrum\electrum\util.py", line 1309, in join
task.result()
File "...\electrum\electrum\interface.py", line 1128, in get_estimatefee
res = await self.session.send_request('blockchain.estimatefee', [num_blocks])
File "...\electrum\electrum\interface.py", line 169, in send_request
response = await util.wait_for2(
File "...\electrum\electrum\util.py", line 1383, in wait_for2
return await asyncio.ensure_future(fut, loop=get_running_loop())
File "...\aiorpcX\aiorpcx\session.py", line 540, in send_request
return await self._send_concurrent(message, future, 1)
File "...\aiorpcX\aiorpcx\session.py", line 512, in _send_concurrent
return await future
aiorpcx.jsonrpc.RPCError: (-32603, 'internal error: bitcoind request timed out')
```
```
93.60 | E | asyncio | Task exception was never retrieved
future: <Task finished name='Task-7385' coro=<Interface.get_estimatefee() done, defined at ...\electrum\electrum\interface.py:1123> exception=RPCError(-32603, 'internal error: bitcoind request timed out')>
Traceback (most recent call last):
File "...\electrum\electrum\interface.py", line 1132, in get_estimatefee
res = await self.session.send_request('blockchain.estimatefee', [num_blocks])
File "...\electrum\electrum\interface.py", line 169, in send_request
response = await util.wait_for2(
File "...\electrum\electrum\util.py", line 1383, in wait_for2
return await asyncio.ensure_future(fut, loop=get_running_loop())
File "...\aiorpcX\aiorpcx\session.py", line 540, in send_request
return await self._send_concurrent(message, future, 1)
File "...\aiorpcX\aiorpcx\session.py", line 512, in _send_concurrent
return await future
aiorpcx.jsonrpc.RPCError: (-32603, 'internal error: bitcoind request timed out')
```
if qt is not installed, e.g. on a server, was getting:
```
$ ./run_electrum sadasdasddsa
Traceback (most recent call last):
File "/home/user/wspace/electrum/./run_electrum", line 532, in <module>
main()
File "/home/user/wspace/electrum/./run_electrum", line 383, in main
lang = get_default_language(gui_name=gui_name)
File "/home/user/wspace/electrum/electrum/gui/default_lang.py", line 23, in get_default_language
from PyQt5.QtCore import QLocale
ModuleNotFoundError: No module named 'PyQt5.QtCore'
```
- add RecvMPPResolution enum for possible states of a pending incoming MPP,
and use it in check_mpp_status
- new state: "FAILED", to allow nicely failing back the whole MPP set
- key more things with payment_hash+payment_secret, for consistency
(just payment_hash is insufficient for trampoline forwarding)
The "python:rc" tag on dockerhub has not been updated for 2+ years
and is still at 3.10.0rc2. Even 3.11 has been released for many months now.
see https://hub.docker.com/_/python/tags
follow-up https://github.com/spesmilo/electrum/pull/8536
```
1.52 | E | gui.qt.ElectrumGui |
Traceback (most recent call last):
File "/home/user/wspace/electrum/electrum/gui/qt/__init__.py", line 342, in start_new_window
wallet = self.daemon.load_wallet(path, None)
File "/home/user/wspace/electrum/electrum/daemon.py", line 469, in func_wrapper
return func(self, *args, **kwargs)
File "/home/user/wspace/electrum/electrum/daemon.py", line 479, in load_wallet
wallet = self._load_wallet(path, password, manual_upgrades=manual_upgrades, config=self.config)
File "/home/user/wspace/electrum/electrum/util.py", line 466, in do_profile
o = func(*args, **kw_args)
File "/home/user/wspace/electrum/electrum/daemon.py", line 504, in _load_wallet
db = WalletDB(storage.read(), manual_upgrades=manual_upgrades)
File "/home/user/wspace/electrum/electrum/wallet_db.py", line 117, in __init__
self._after_upgrade_tasks()
File "/home/user/wspace/electrum/electrum/wallet_db.py", line 247, in _after_upgrade_tasks
self._load_transactions()
File "/home/user/wspace/electrum/electrum/util.py", line 466, in do_profile
o = func(*args, **kw_args)
File "/home/user/wspace/electrum/electrum/wallet_db.py", line 1536, in _load_transactions
self.data = StoredDict(self.data, self, [])
File "/home/user/wspace/electrum/electrum/json_db.py", line 117, in __init__
self.__setitem__(k, v)
File "/home/user/wspace/electrum/electrum/json_db.py", line 49, in wrapper
return func(self, *args, **kwargs)
File "/home/user/wspace/electrum/electrum/json_db.py", line 135, in __setitem__
v = self.db._convert_dict(self.path, key, v)
File "/home/user/wspace/electrum/electrum/json_db.py", line 247, in _convert_dict
v = dict((k, constructor(**x)) for k, x in v.items())
File "/home/user/wspace/electrum/electrum/json_db.py", line 247, in <genexpr>
v = dict((k, constructor(**x)) for k, x in v.items())
TypeError: ImportedChannelBackupStorage.__init__() missing 1 required positional argument: 'local_payment_pubkey'
```
This clears up log spam for regtest tests.
related:
- https://bugs.python.org/issue44665
- https://github.com/python/cpython/issues/88831
- https://textual.textualize.io/blog/2023/02/11/the-heisenbug-lurking-in-your-async-code/
- https://github.com/python/cpython/issues/91887#issuecomment-1434816045
- "Task was destroyed but it is pending!"
Perhaps we should inspect all our usages of
- asyncio.create_task
- loop.create_task
- asyncio.ensure_future
- asyncio.run_coroutine_threadsafe
?
Example log for running a regtest test:
```
$ python3 -m unittest electrum.tests.regtest.TestLightningAB.test_collaborative_close
***** test_collaborative_close ******
initializing alice
--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.10/logging/__init__.py", line 1100, in emit
msg = self.format(record)
File "/usr/lib/python3.10/logging/__init__.py", line 943, in format
return fmt.format(record)
File "/home/user/wspace/electrum/electrum/logging.py", line 44, in format
record = copy.copy(record) # avoid mutating arg
File "/usr/lib/python3.10/copy.py", line 92, in copy
rv = reductor(4)
ImportError: sys.meta_path is None, Python is likely shutting down
Call stack:
File "/usr/lib/python3.10/asyncio/base_events.py", line 1781, in call_exception_handler
self._exception_handler(self, context)
File "/home/user/wspace/electrum/electrum/util.py", line 1535, in on_exception
loop.default_exception_handler(context)
File "/usr/lib/python3.10/asyncio/base_events.py", line 1744, in default_exception_handler
logger.error('\n'.join(log_lines), exc_info=exc_info)
Message: "Task was destroyed but it is pending!\ntask: <Task pending name='Task-2' coro=<Abstract_Wallet.on_event_adb_set_up_to_date() running at /home/user/wspace/electrum/electrum/wallet.py:485> wait_for=<Future finished result=0> cb=[_chain_future.<locals>._call_set_state() at /usr/lib/python3.10/asyncio/futures.py:392]>"
Arguments: ()
[--- SNIP --- more of the same --- SNIP ---]
--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.10/logging/__init__.py", line 1100, in emit
msg = self.format(record)
File "/usr/lib/python3.10/logging/__init__.py", line 943, in format
return fmt.format(record)
File "/home/user/wspace/electrum/electrum/logging.py", line 44, in format
record = copy.copy(record) # avoid mutating arg
File "/usr/lib/python3.10/copy.py", line 92, in copy
rv = reductor(4)
ImportError: sys.meta_path is None, Python is likely shutting down
Call stack:
File "/usr/lib/python3.10/asyncio/base_events.py", line 1781, in call_exception_handler
self._exception_handler(self, context)
File "/home/user/wspace/electrum/electrum/util.py", line 1535, in on_exception
loop.default_exception_handler(context)
File "/usr/lib/python3.10/asyncio/base_events.py", line 1744, in default_exception_handler
logger.error('\n'.join(log_lines), exc_info=exc_info)
Message: "Task was destroyed but it is pending!\ntask: <Task pending name='Task-31' coro=<Abstract_Wallet.on_event_adb_set_up_to_date() running at /home/user/wspace/electrum/electrum/wallet.py:485> wait_for=<Future pending cb=[_chain_future.<locals>._call_check_cancel() at /usr/lib/python3.10/asyncio/futures.py:385, Task.task_wakeup()]> cb=[_chain_future.<locals>._call_set_state() at /usr/lib/python3.10/asyncio/futures.py:392]>"
Arguments: ()
true
true
true
true
funding alice
```
scenario:
- user opens a lightning channel and exports an "imported channel backup"
- user closes channel via local-force-close
- local ctx is published, to_local output has user's funds and they are CSV-locked for days
- user restores wallet file from seed and imports channel backup
- new wallet file should be able to sweep coins from to_local output (after CSV expires)
This was not working previously, as the local_payment_basepoint was not included in the
imported channel backups, and the code was interpreting the lack of this as the channel not
having option_static_remotekey enabled. This resulted in lnutil.extract_ctn_from_tx
using an incorrect funder_payment_basepoint, and lnsweep not recognising the ctx due to
the garbage ctn value.
The imported channel backup serialisation format is slightly changed to include the
previously missing field, and its version number is bumped (0->1). We allow importing
both version 0 and version 1 backups, however v0 backups cannot handle the above
described scenario (they can only be used to request a remote-force-close).
Note that we were/are setting the missing local_payment_basepoint to the pubkey of
one of the wallet change addresses, which is bruteforceable if necessary, but I
think it is not worth the complexity to add this bruteforce logic. Also note
that the bruteforcing could only be done after the local-force-close was broadcast.
Ideally people with existing channels and already exported v0 backups should re-export
v1 backups... Not sure how to handle this.
closes https://github.com/spesmilo/electrum/issues/8516
I have reconsidered and now think that we should always hard-fail
if asserts asserts are disabled. It is just easier to reason about
the code knowing that asserts are evaluated.
If an end-user or library user has a concrete use case where this is
a problem, please open an issue and let us know.
follow-up
0f541be6f10e5464ca13
