Files
s3/weed/mount/page_writer.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

104 lines
2.6 KiB
Go

package mount
import (
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/mount/page_writer"
)
type PageWriter struct {
fh *FileHandle
collection string
replication string
chunkSize int64
writerPattern *WriterPattern
randomWriter page_writer.DirtyPages
}
var (
_ = page_writer.DirtyPages(&PageWriter{})
)
func newPageWriter(fh *FileHandle, chunkSize int64) *PageWriter {
pw := &PageWriter{
fh: fh,
chunkSize: chunkSize,
writerPattern: NewWriterPattern(chunkSize),
randomWriter: newMemoryChunkPages(fh, chunkSize),
}
return pw
}
func (pw *PageWriter) AddPage(offset int64, data []byte, isSequential bool, tsNs int64) error {
glog.V(4).Infof("%v AddPage [%d, %d)", pw.fh.fh, offset, offset+int64(len(data)))
chunkIndex := offset / pw.chunkSize
for i := chunkIndex; len(data) > 0; i++ {
writeSize := min(int64(len(data)), (i+1)*pw.chunkSize-offset)
if err := pw.addToOneChunk(i, offset, data[:writeSize], isSequential, tsNs); err != nil {
return err
}
offset += writeSize
data = data[writeSize:]
}
return nil
}
func (pw *PageWriter) addToOneChunk(chunkIndex, offset int64, data []byte, isSequential bool, tsNs int64) error {
return pw.randomWriter.AddPage(offset, data, isSequential, tsNs)
}
func (pw *PageWriter) FlushData() error {
return pw.randomWriter.FlushData()
}
func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64, tsNs int64) (maxStop int64) {
glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.fh.inode, offset, offset+int64(len(data)))
chunkIndex := offset / pw.chunkSize
for i := chunkIndex; len(data) > 0; i++ {
readSize := min(int64(len(data)), (i+1)*pw.chunkSize-offset)
maxStop = pw.randomWriter.ReadDirtyDataAt(data[:readSize], offset, tsNs)
offset += readSize
data = data[readSize:]
}
return
}
func (pw *PageWriter) LockForRead(startOffset, stopOffset int64) {
pw.randomWriter.LockForRead(startOffset, stopOffset)
}
func (pw *PageWriter) UnlockForRead(startOffset, stopOffset int64) {
pw.randomWriter.UnlockForRead(startOffset, stopOffset)
}
func (pw *PageWriter) Destroy() {
pw.randomWriter.Destroy()
}
func (pw *PageWriter) EvictOneWritableChunk() bool {
return pw.randomWriter.EvictOneWritableChunk()
}
func (pw *PageWriter) ProactiveFlush(nowNs, idleThresholdNs, maxHoldNs, fillRatio int64, frontierLag int, isSequential bool) bool {
return pw.randomWriter.ProactiveFlush(nowNs, idleThresholdNs, maxHoldNs, fillRatio, frontierLag, isSequential)
}
func max(x, y int64) int64 {
if x > y {
return x
}
return y
}
func min(x, y int64) int64 {
if x < y {
return x
}
return y
}