fix(appconfig,userconfig): restore pre-migration fallback for ownCloud migration#59677
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This works ! Please merge it soon, if possible :) |
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/backport to stable34 |
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/backport to stable33 |
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/backport to stable32 |
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…d migration AppConfig and UserConfig unconditionally queried NC-only columns (type, lazy, flags, indexed) that don't exist in ownCloud's database schema, breaking ownCloud → Nextcloud upgrades entirely before the schema migration steps could run. Restore the fallback pattern in both classes: on first loadConfig() call, if a DBException with REASON_INVALID_FIELD_NAME is thrown, set $migrationCompleted = false and retry selecting only the columns present in ownCloud's schema. INSERT and UPDATE statements also omit NC-only columns when $migrationCompleted is false. The catch block also guards against infinite recursion: if $migrationCompleted is already false when the exception fires, the exception is re-thrown instead of triggering another recursive call. Fixes: #57340 Signed-off-by: Anna Larch <anna@nextcloud.com> AI-Assisted-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
ownCloud → Nextcloud migration broke in NC31+ because
AppConfigandUserConfigunconditionally query columns (type,lazy,flags,indexed) that were added by Nextcloud and don't exist in ownCloud's database schema. These columns are only created by migration steps that can't run until the app config system is already functional — a chicken-and-egg problem that caused the entire upgrade to fail with an invalid field name error.Root cause: A pre-existing try/catch fallback in
AppConfig::loadConfig()was removed in a572a5c without a replacement.UserConfignever had an equivalent guard.Fix: Restore the fallback pattern in both classes:
loadConfig()call, if aDBExceptionwithREASON_INVALID_FIELD_NAMEis thrown, set$migrationCompleted = falseand retry selecting only the columns present in ownCloud's schema (appid,configkey,configvalue/userid)$migrationCompleted = false, INSERT and UPDATE statements also omit the NC-only columns (type,lazy,flags,indexed) so writes don't fail eitherThis allows the migration infrastructure to boot successfully so the schema migration steps can run and add the missing columns.
Fixes: #57340
Test plan
AppConfigMigrationFallbackTest— unit tests forAppConfig:REASON_INVALID_FIELD_NAMEUserConfigMigrationFallbackTest— same three cases forUserConfigChecklist
3. to review, feature component)stable32)AI (if applicable)
AI-Assisted-By: Claude Sonnet 4.6 noreply@anthropic.com