Adds a function to wait for a new QMP event with a model filter
so that you can expect specific type of events with specific payloads.
e.g. a guest-reset-induced shutdown event.
Now that we have a QMP client, we can wire it up in the test driver.
For now, it is almost completely useless because of the need of a constant "event loop", especially
for event listening.
In the next commits, we will slowly enable more and more usecases.
When listening on unix sockets, it doesn't make sense to specify a port
for nginx's listen directive.
Since nginx defaults to port 80 when the port isn't specified (but the
address is), we can change the default for the option to null as well
without changing any behaviour.
Since 008f9f0cd4
("nixos/test-driver: actually use the backdoor message to wait for backdoor"),
when boot is still computering, we can get a tons of empty strings in response to the shell.
This is not really useful to print and waste the disk space for any CI system that logs them.
We stop logging chunks whenever they are empty.
While working on #192270, I noticed that only some wait_for_* helper
functions make the timeout configurable. I think we should be able to
customize it in all cases
New EDK2 sets up the backdoor port as a serial console, which feeds the test driver
a bunch of boot logs it can safely ignore. Do so by waiting for the message the
backdoor shell prints before doing anything else.
By some miracle, before, it was possible to reconnect to the `node1` without
doing any relevant dance.
But now we are direct booting (¿), it seems like we need to do the right things.
This introduces a `check_output` flag for `execute` because we do not want to steal the
messages from the backdoor service as we might execute the kexec too fast compared
to when we will reconnect.
Therefore, we will let the message in the pipe if needed.
- `wait_until_fails` was not passing through its `timeout` argument to
the internal `retry` function, hence was always using 900 seconds (the
default timeout for `retry`) rather than the user-specified value.
Previously, `wait_for_console_text` would block indefinitely until there were lines
shown in the buffer.
This is highly annoying when testing for things that can just hang for some reasons.
This introduces a classical timeout mechanism via non-blocking get on the Queue.
This is useful whenever you want to diagnose the current state of UEFI
variables, to assert that bootloaders or boot programs (systemd-stub)
did their job correctly and set their variables accordingly.
In the future, it can enable inspecting SecureBoot keys also.
What the code was trying to do was helpfully add a directory and
extension if none were specified, but it did this by checking whether
the filename was composed of a very limited character set that didn't
even include dashes.
With this change, the intention of the code is clearer, and I can put
dashes in my screenshot names.
The output of a command is not guaranteed to be valid UTF-8, so the
decoding can fail raising UnicodeDecodeError. If this happens during a
`succeeds` the check will be erroneously marked failed.
This changes the error handling to the "replace" mode, where invalid
codepoints are replaced with � (REPLACEMENT CHARACTER U+FFFD) and the
decoding can go on.
`shell_interact()` is currently not nice to use. If you try to cancel
the socat process, it will also break the nixos test. Furthermore
ptpython creates it's own terminal that subprocesses are running in,
which breaks some of the terminal features of socat.
Hence this commit extends `shell_interact` to allow also to connect to
arbitrary servers i.e. tcp servers started by socat.
A few places used Unicode U+2018/U+2019 left/right single quotes (but
not always correctly balanced). Let's just use plain ASCII single quotes
everywhere.
