Files
s3/weed/s3api/s3lifecycle/shard.go
zooqueen dd74d3e6d6 Replace AGPL MinIO fork with Apache-2.0 SeaweedFS fork; rebrand CLI weed->s3
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.

- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
  "Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
  SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
  (replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
  keep their upstream import paths with zero churn. Internal identifiers and
  import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
  help/usage/flag strings, shell autocomplete program name, and the product name
  in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
  (e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
  `cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
  updated to ignore the `s3` build output.
2026-06-18 23:41:25 -07:00

34 lines
987 B
Go

package s3lifecycle
import (
"crypto/sha256"
"hash"
"sync"
)
// ShardCount partitions the (bucket, key) keyspace for the per-shard
// lifecycle reader. Workers receive one READ task per owned shard;
// each shard's cursor advances independently.
const ShardCount = 16
// shardHashPool reuses sha256 hashers — ShardID is in the per-event hot
// path and a fresh allocation per call shows up under load.
var shardHashPool = sync.Pool{
New: func() interface{} { return sha256.New() },
}
// ShardID maps (bucket, key) to a shard in [0, ShardCount). Stable across
// restarts and across processes — identical (bucket, key) always lands on
// the same shard. Implementation: top 4 bits of sha256(bucket || "/" || key).
func ShardID(bucket, key string) int {
h := shardHashPool.Get().(hash.Hash)
defer shardHashPool.Put(h)
h.Reset()
h.Write([]byte(bucket))
h.Write([]byte{'/'})
h.Write([]byte(key))
var buf [sha256.Size]byte
sum := h.Sum(buf[:0])
return int(sum[0] >> 4)
}