feat(unixfs): configurable CID Profiles from IPIP-499 #1088
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add configurable size estimation modes for determining when to switch between BasicDirectory and HAMTDirectory: - SizeEstimationLinks: legacy mode using len(name) + len(CID), default - SizeEstimationBlock: full serialized dag-pb block size (accurate) - SizeEstimationDisabled: link-count only via MaxLinks, ignores size includes: - HAMTSizeEstimation global for default mode - WithSizeEstimationMode option for per-directory override - helper functions for accurate protobuf size calculation part of IPIP-499 UnixFS CID Profiles implementation.
introduces UnixFSProfile struct with predefined profiles: - UnixFS_v0_2015: legacy CIDv0 settings (256 KiB chunks, 174 links/node) - UnixFS_v1_2025: modern CIDv1 settings (1 MiB chunks, 1024 links/node) profiles control file chunking, DAG width, and HAMT sharding parameters. ApplyGlobals() sets all relevant global variables at once. part of IPIP-499 implementation.
lidel
changed the title
Codecov Report❌ Patch coverage is
@@ Coverage Diff @@
## main #1088 +/- ##
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+ Coverage 61.18% 61.23% +0.05%
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Files 264 265 +1
Lines 26230 26346 +116
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+ Hits 16049 16134 +85
- Misses 8508 8527 +19
- Partials 1673 1685 +12
... and 12 files with indirect coverage changes 🚀 New features to boost your workflow:
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add SerialFileOptions and NewSerialFileWithOptions to control whether symlinks are preserved as UnixFS symlink nodes (Data.Type=4) or dereferenced and replaced with their target content during file traversal.
Link.Size is already uint64, so the explicit conversions are redundant and flagged by golangci-lint unconvert check.
This was referenced Jan 17, 2026
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Not ready yet, using this PR draft to catch any CI regressions after each sub-task is done.