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feat(config-upgrade-snapshot): add configcompare tool, extend snapverify (task 8.4)

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Build configcompare_paths(), an offline sibling to snapdiff/walcompare that
recomputes each member's active-config sha256 fresh from its own on-disk
workdir/name/conf bytes and reports identical vs. divergent (Req 4.2).
Wire it as a cmd_configcompare CLI subcommand in test.c, matching its
siblings, after review caught it shipped as an unreachable library function
in round 1.

Extend snapverify to match the current on-disk checkpoint format: bump
SNAP_FORMAT_VERSION to 2, replace the stale raw queue-frame decode with the
capnp length-prefixed walk, add host-frame and config-bytes-section
structural walks, and decode (not just presence-check) the header's
cfgref tag/sha. Without this fix snapverify rejected every checkpoint
written by the current codebase.
This commit is contained in:
Rongsong Shen 2026-07-25 09:06:24 +00:00
parent c5d8ecbd7d
commit 1d09631df0
10 changed files with 997 additions and 47 deletions
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2
src/controller/testsuite/controller_test.c
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@ -69,6 +69,7 @@ extern void test_waldump(void);
extern void test_walcompare(void);
extern void test_snapverify(void);
extern void test_snapdiff(void);
extern void test_configcompare(void);
extern void test_drive_async_config(void);
extern void test_slowlane(void);
extern void test_commit_admission_pool(void);
@ -228,6 +229,7 @@ int main(int argc, char* argv[])
TEST(test_walcompare);
TEST(test_snapverify);
TEST(test_snapdiff);
TEST(test_configcompare);
TEST(test_drive_async_config);
TEST(test_slowlane);
TEST(test_commit_admission_pool);