Files
s3/weed/util/buffer_pool/sync_pool.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

39 lines
1.0 KiB
Go

package buffer_pool
import (
"bytes"
"sync"
)
// maxRetainedBufferCap caps the capacity of buffers we hand back to the
// sync.Pool. Buffers grown past this (e.g. by a 64 MiB chunk upload through
// volume.PostHandler -> needle.ParseUpload -> bytes.Buffer.ReadFrom) are
// dropped instead of pooled, so the underlying byte array becomes garbage
// and is collected. Without this cap the pool effectively hoards every
// high-water buffer for the process's lifetime — see #6541, where Harbor's
// concurrent UploadPartCopy filled the pool with 64 MiB buffers and RSS
// never receded.
const maxRetainedBufferCap = 4 * 1024 * 1024
var syncPool = sync.Pool{
New: func() interface{} {
return new(bytes.Buffer)
},
}
func SyncPoolGetBuffer() *bytes.Buffer {
return syncPool.Get().(*bytes.Buffer)
}
func SyncPoolPutBuffer(buffer *bytes.Buffer) {
if buffer == nil {
return
}
if buffer.Cap() > maxRetainedBufferCap {
// Drop the buffer; let GC reclaim the oversized backing array.
return
}
buffer.Reset()
syncPool.Put(buffer)
}