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Much more powerful check command, and new recover command #6772

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merged 8 commits into from Oct 26, 2023

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rustyrussell
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Closes: #6616

With a fairly simple sweep, I could make check powerful enough that check recover does what the proposed recover-possible command was for. Overall, really happy with this change!

So now, you can get a node to recover through the RPC api, great for front-ends like RTL, Zeus, etc.

@rustyrussell rustyrussell added this to the v23.11 milestone Oct 14, 2023
@rustyrussell rustyrussell force-pushed the guilt/recover-json branch 2 times, most recently from 13d668e to d9028e3 Compare October 20, 2023 00:41
@rustyrussell rustyrussell force-pushed the guilt/recover-json branch 2 times, most recently from ff10663 to d1cae99 Compare October 23, 2023 11:33
```
**BROKEN** connectd: dev_report_fds: 5 open but unowned?
```

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
…cking.

We often want to do more parameter checks after param(), so allow a
new param_check(), with the proviso that the caller needs to also return
command_check_done() after other checks if command_check_only(cmd) is true.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
… write to db.

Put an assertion inside db.c, and run every command we do (in testing) through
a `check` variant.

I inserted a deliberate bug (made addpsbtoutput call wallet_get_newindex()
before returning when running `check`, and indeed, backtrace as expected.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We already do this in param_invstring now.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This makes `check` much more thorough, and useful.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `check` now does much more checking on every command (not just basic parameter types).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Config: `--recover` can take a 32-byte hex string, as well as codex32.
Changelog-Added: JSON-RPC: `recover` command to force (unused) lightningd node to restart with `--recover` flag.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Looks great. I like the added check functionality and test coverage.

ACK 598c809

@rustyrussell rustyrussell merged commit 13fec8d into ElementsProject:master Oct 26, 2023
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Recover command so front-ends can do node recovery
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