gabriel / musehub public
feat BREAKING task/prebuild-only-mpack #1 / 1
AI Agent gabriel · 29 days ago · Jun 21, 2026 · Diff

feat: deprecate on-demand mpack build; cache miss → 503 MPackNotReadyError

- Add MPackNotReadyError exception to musehub_wire_shared.py - wire_fetch_mpack: cache miss raises MPackNotReadyError unless force_build=True - Prebuild worker and direct test calls pass force_build=True to bypass the gate - HTTP fetch/mpack route returns 503 + Retry-After: 30 on MPackNotReadyError - Fix 17 tests: add force_build=True to all direct wire_fetch_mpack calls that exercise the build path (cache was never pre-seeded in test setup) - Fix test _make_commit helpers: use hash_snapshot() for snapshot_id so _cached_manifest_reproduces() passes and blobs are served correctly

sha256:97c7eb42fab4fd882f88ce01cf6f18d999560962d504651a86c0a90ef0da6af1 sha
sha256:044de408d0372d370ea49a41a825babf82999cca72d95ee4cd79e4de13155ace parent
+5 ~69 symbols
sha256:7a5a6bda3d77ed76d5ed4401cf8c71ab26848c4252cbba5715736dca5093f7f3 snapshot
+5
symbols added
~69
symbols modified
0
dead code introduced
Semantic Changes 74 symbols
~ musehub/api/routes/wire.py .py 1 symbol added, 16 symbols modified
+ MPackNotReadyError import import MPackNotReadyError L42–42
~ fetch_mpack
~ FetchCommitNotFound
~ FetchNotIndexedError
~ FetchNotReady
~ MPackValidationError
~ ObjectHashMismatch
~ record_mpack_bytes_uploaded
~ wire_fetch
~ wire_fetch_mpack
~ wire_fetch_objects
~ wire_push_mpack_presign
~ wire_push_unpack_mpack
~ wire_refs
~ wire_repair_commit
~ wire_repair_object
~ wire_repair_snapshot
~ musehub/services/musehub_wire.py .py 1 symbol added, 23 symbols modified
+ MPackNotReadyError import import MPackNotReadyError L10–10
~ FetchMPackResult
~ FetchNotIndexedError
~ FetchPresignResult
~ MPackValidationError
~ NonFastForwardError
~ ObjectHashMismatch
~ PolyglotObjectError
~ RepairResult
~ _commit_identity_bytes
~ _get_blob_put_sem
~ _int_safe
~ _is_ancestor_db
~ _is_fast_forward
~ _monotonic
~ _parse_iso
~ _reconstruct_manifest
~ _str_list
~ _str_values
~ _to_wire_commit
~ _upsert_object_refs
~ _utc_now
~ _verify_object_hash
~ logger
~ musehub/services/musehub_wire_fetch.py .py 1 symbol added, 12 symbols modified
+ MPackNotReadyError import import MPackNotReadyError L30–30
~ FetchMPackResult
~ FetchNotIndexedError
~ FetchPresignResult
~ MPackValidationError
~ _commit_to_wire_s3
~ _reconstruct_manifest
~ _snap_row_to_wire_s3
~ _to_wire_commit
~ _utc_now
~ logger
~ process_fetch_mpack_prebuild_job
~ wire_fetch_mpack
~ musehub/services/musehub_wire_shared.py .py 1 symbol added
+ MPackNotReadyError class class MPackNotReadyError L91–95
~ tests/test_fetch_mpack_native_phase1.py .py 8 symbols modified
~ _make_commit
~ test_fn1_content_cache_served_without_mpack_get
~ test_fn2_object_served_from_mpack_no_per_object_key
~ test_fn3_two_mpacks_each_fetched_once
~ test_fn4_missing_mpack_falls_back_to_per_object_get
~ test_fn5_unindexed_object_raises_fetch_not_indexed_error
~ test_fn6_mixed_sources_all_merged
~ test_fn7_zstd_compressed_mpack_objects_decompressed
~ tests/test_fetch_mpack_prebuild.py .py 1 symbol modified
~ test_fmc_14_cache_miss_builds_and_writes_cache_row
~ tests/test_fetch_mpack_route.py .py 1 symbol added, 3 symbols modified
+ wire_fetch_mpack import import wire_fetch_mpack L28–28
~ _make_commit
~ test_rb1_small_public_repo_returns_inline_mpack
~ test_rb2_route_preserves_content_addressing_proof
~ tests/test_ltier_fetch_regression.py .py 1 symbol modified
~ test_lf2_wire_fetch_mpack_1000_commits
~ tests/test_wire_fetch_mpack.py .py 5 symbols modified
~ _make_commit
~ test_fb0_single_commit_returns_mpack
~ test_fb1_mpack_id_equals_sha256_of_bytes
~ test_fb2_mpack_contains_commits_and_objects
~ test_fb5_object_content_hashes_to_id
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