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refactor: Clean up migration logic #2310

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ginger merged 4 commits from ginger/migration-cleanup into main 2026-10-01 18:43:54 +00:00
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ginger commented 2026-10-01 14:49:33 +00:00
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This pull request cleans up the extremely ugly and footgun-prone database migration logic to avoid future silly mistakes.

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refactor: Clean up migration logic
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f0e22b7bdf
refactor: Remove some unnecessary macro logic
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5f9e62694b
fix: Don't bump version if it's already bumped
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nex reviewed 2026-10-01 16:39:16 +00:00
src/service/migrations.rs Outdated
@ -44,0 +150,4 @@
services.server.runtime().spawn(async move {
unembed_unsigned_info(metadata, timeline).await.expect(
"unembed_unsigned_info failed! your database is broken, sorry >.>",
nex commented 2026-10-01 16:39:16 +00:00
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This error message is unhelpful and also, unless expect() panics with the context of the result, masks the actual error message

This error message is unhelpful and also, unless expect() panics with the context of the result, masks the actual error message
ginger commented 2026-10-01 18:38:03 +00:00
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expect prints the error payload, yes. like you said yourself, the only way for unembed_unsigned_info to fail is if you have a PDU with no raw ID, in which case your DB is irreparably hosed

`expect` prints the error payload, yes. like you said yourself, the only way for `unembed_unsigned_info` to fail is if you have a PDU with no raw ID, in which case your DB is irreparably hosed
ginger commented 2026-10-01 18:41:28 +00:00
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actually unembed_unsigned_info can only fail by panicking so I can just remove this entirely

actually `unembed_unsigned_info` can only fail by panicking so I can just remove this entirely
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nex requested changes 2026-10-01 16:40:29 +00:00
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src/service/migrations.rs
@ -44,0 +126,4 @@
migration!(split_userid_password),
// This is backwards compatible because old versions will recreate the keyspace if it's
// missing.
migration!("drop_roomsynctoken_shortstatehash" => obliterate_roomsynctoken_shortstatehash_with_extreme_prejudice),
nex commented 2026-10-01 16:40:17 +00:00
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nit: no const? kinda inconsistent

nit: no const? kinda inconsistent
ginger commented 2026-10-01 18:36:18 +00:00
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no const is necessary, this is the only place where the migration marker is spelled out in the file

no const is necessary, this is the only place where the migration marker is spelled out in the file
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src/service/migrations.rs
@ -44,0 +153,4 @@
"unembed_unsigned_info failed! your database is broken, sorry >.>",
);
db["global"].insert(b"unembed_unsigned_info", []);
});
nex commented 2026-10-01 16:40:00 +00:00
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Is there a reason to move the marker out of the function itself?

Is there a reason to move the marker out of the function itself?
ginger commented 2026-10-01 18:36:42 +00:00
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it's more consistent with the other migration functions

it's more consistent with the other migration functions
nex commented 2026-10-01 18:42:14 +00:00
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i guess

i guess
nex marked this conversation as resolved
nex approved these changes 2026-10-01 18:42:21 +00:00
fix: Make unembed_unsigned_info infallible
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a2b0eb370c
ginger merged commit cb7af18bc2 into main 2026-10-01 18:43:54 +00:00
ginger deleted branch ginger/migration-cleanup 2026-10-01 18:43:54 +00:00
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