Pre init recover index bug fix

[kjnilsson]

Fix snapshot recovery with empty indexes file

Updates ra_log:pre_init to accept and pass the machine configuration to ra_snapshot:init,
ensuring proper recovery even when the snapshot indexes file is empty.
Additionally, fixes ra_log_pre_init to properly handle both {module, ...} and {simple, ...}
machine configuration formats, and includes a regression test.

[Copilot]

Pull request overview

Fixes snapshot recovery when the snapshot indexes file is present but empty/corrupt by ensuring pre-init snapshot discovery has enough machine context to rebuild live indexes, and adds a regression test to prevent recurrence.

Changes:

• Change ra_log:pre_init to accept a machine instance and pass it through to ra_snapshot:init/… so recover_indexes/… can rebuild indexes when needed.
• Update ra_log_pre_init to read persisted machine config and normalize {module,…} / {simple,…} formats into the {machine, Mod, Args} form used by ra_snapshot.
• Add a Common Test regression covering restart + snapshot install with an emptied snapshots/.../indexes file; minor logging format tweak in ra_server_proc.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
test/ra_log_2_SUITE.erl	Adds regression test for recovery when snapshot indexes file is empty.
src/ra_server_proc.erl	Adjusts error logging formatting to use depth-limited term formatting.
src/ra_log.erl	Updates pre_init API to accept/pass machine into snapshot initialization.
src/ra_log_pre_init.erl	Extracts and normalizes machine config from on-disk config before calling ra_log:pre_init/2.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.