Add 11 missing MCI test fixtures (ITK PR #6209 ExternalData prefetch fix)#47
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hjmjohnson merged 1 commit intoInsightSoftwareConsortium:gh-pagesfrom May 5, 2026
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These 11 binary test fixtures are referenced from the MorphologicalContourInterpolation module's test suite via .cid / .sha512 content links but were never published to ITKTestingData. They were authored by KitwareMedical/ITKMorphologicalContourInterpolation and pinned only on its (now-decayed) IPFS infrastructure. Public IPFS gateways (dweb.link, ipfs.io, w3s.link, gateway.ipfs.io) all return HTTP 504 Gateway Timeout for these CIDs, breaking ITK's "Populate shared ExternalData cache" CI job on PR #6209. Surfaced by InsightSoftwareConsortium/ITK PR #6209 (Cuberille follow-up ingest of MCI into Modules/Filtering/MorphologicalContourInterpolation/). Provenance and verification: - Source: https://data.kitware.com/api/v1/file/hashsum/sha512/<hash>/download - SHA512 verified: each file's downloaded bytes match the recorded .sha512 sidecar from the upstream MCI commit predating the md5/sha512 -> .cid conversion. - CID verified: locally computed via `npx ipfs-car pack --no-wrap` (UnixFS-v1-2025 / IPIP-0499 profile, matching ITK's PR #6111 upload tooling) and confirmed equal to the `.cid` sidecar contents recorded in the source tree. Files added (11 each under CID/ and SHA512/): c2.mha 3.0 MB bafkreiekrb...c37pxte c10.mha 3.6 MB bafkreic6be...67q7ie 105769fixed.nii 31 MB bafkreieotw...mwj64 FaceRoIFinished.nrrd 30 KB bafkreieh7u...phvm BigImage.nrrd 4.2 MB bafkreihay3...vgxkm 16-5-16.nrrd 1.5 KB bafkreid5dr...cawlm 105769moving.nii 31 MB bafkreig2z7...pz5dq NDRI64816L.nii 28 MB bafkreidgha...w2mru NDRI65239R.nii 28 MB bafkreicoqr...45mpu GridSegBase.nrrd 1.5 KB bafkreihnud...ctjhe 3x3x3.nrrd 313 B bafkreihlfu...lbua4 Total: 22 new files (11 CID + 11 SHA512), ~155 MB. After this lands, ITK CI's PrefetchCIDContentLinks step will resolve all 12 previously-failing MCI CIDs from the GitHub Pages mirror (the highest-priority gateway in CMake/ITKExternalData.cmake), and PR #6209's "Populate shared ExternalData cache" job will pass.
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Adds 11 binary test fixtures (mirrored at both
CID/<cid>andSHA512/<hash>paths) that were referenced from theMorphologicalContourInterpolationmodule's test suite via.cidcontent links but never published here. Surfaced byInsightSoftwareConsortium/ITK#6209which fails its "Populate shared ExternalData cache" CI step on these specific CIDs.Provenance and verification
The 11 fixtures originated in
KitwareMedical/ITKMorphologicalContourInterpolation(commit04a2f7afon 2026-04-22 converted that module's.md5/.sha512sidecars to.cid). At the time, the binary content was pinned only on the upstream module's IPFS infrastructure. As of 2026-05-04 every public IPFS gateway tested (dweb.link,ipfs.io,w3s.link,gateway.ipfs.io,gateway.pinata.cloud,nftstorage.link,4everland.io,gateway.ipfs.io) returns HTTP 504 Gateway Timeout for these CIDs — the content is genuinely unreachable from the public IPFS mesh.Recovery path:
https://data.kitware.com/api/v1/file/hashsum/sha512/<hash>/downloadusing the SHA512 sidecars present in upstream MCI's pre-conversion commit (3ed1b9e6485a208c523400867dd3f1f723fb5e84). All 11 returned HTTP 200.shasum -a 512output matched the recorded.sha512sidecar exactly.npx ipfs-car pack --no-wrap <file>(CIDv1 / raw leaves / 1 MiB chunks — the UnixFS-v1-2025 profile codified byInsightSoftwareConsortium/ITK#6111) and confirmed each computed CID equals the.cidsidecar contents recorded in the ITK source tree.Files added (11 × 2 = 22 total, ~155 MB)
c2.mhabafkreiekrb…wec37pxtebb469e11f3f3…c10.mhabafkreic6be…oeyp67q7ie0bc769e6805e…105769fixed.niibafkreieotw…ymcpmwj6490c82f444c69…FaceRoIFinished.nrrdbafkreieh7u…o3h2phvmd7056d721fd9…BigImage.nrrdbafkreihay3…h24djvgxkmebb2c07148d4…16-5-16.nrrdbafkreid5dr…oet2cawlme6abb5c4d865…105769moving.niibafkreig2z7…b7gnchzpz5dq107ca87a0352…NDRI64816L.niibafkreidgha…r2kx7w2mru47495a25da89…NDRI65239R.niibafkreicoqr…vojg45mpu074d81224cec…GridSegBase.nrrdbafkreihnud…77gxwctjhefeab12b8ff5a…3x3x3.nrrdbafkreihlfu…dellbua45680147ee008…All files are well under GitHub's 50 MB per-file push limit; the largest is 31 MB.
What this unblocks
After this PR merges, ITK's
PrefetchCIDContentLinks.pywill resolve these 11 CIDs from the GitHub Pages mirror (https://insightsoftwareconsortium.github.io/ITKTestingData/CID/<cid>) — the highest-priority gateway inCMake/ITKExternalData.cmake, ahead of the IPFS public gateways that are currently failing. PR #6209's "Populate shared ExternalData cache" step will then complete withok=2457 fail=0instead ofok=2445 fail=12.The 12th "failed" CID from the same CI run (
bafkreiacz5odzg…) is already published here — that one is a transientdweb.linkflake; the prefetch job will succeed on retry once the GitHub Pages gateway is preferred.