mirror of
https://github.com/hanzoai/s3.git
synced 2026-10-30 14:59:09 +00:00
zooqueen
dd74d3e6d6
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.
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package util
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
// call represents an in-flight or completed function call.
|
|
type call struct {
|
|
wg sync.WaitGroup
|
|
val []byte
|
|
err error
|
|
}
|
|
|
|
// SingleFlightGroup provides deduplication of concurrent function calls
|
|
// keyed by a string. If multiple goroutines call Do with the same key
|
|
// concurrently, only one executes the function; the others wait and
|
|
// receive the same result.
|
|
//
|
|
// After a call completes, the key is removed so that subsequent calls
|
|
// trigger a fresh execution.
|
|
type SingleFlightGroup struct {
|
|
mu sync.Mutex
|
|
m map[string]*call
|
|
}
|
|
|
|
// Do executes fn once for a given key, even if called concurrently.
|
|
// All callers for the same key block until fn returns and then receive
|
|
// the same result.
|
|
func (g *SingleFlightGroup) Do(key string, fn func() ([]byte, error)) ([]byte, error) {
|
|
g.mu.Lock()
|
|
if g.m == nil {
|
|
g.m = make(map[string]*call)
|
|
}
|
|
if c, ok := g.m[key]; ok {
|
|
g.mu.Unlock()
|
|
c.wg.Wait()
|
|
return c.val, c.err
|
|
}
|
|
c := &call{}
|
|
c.wg.Add(1)
|
|
g.m[key] = c
|
|
g.mu.Unlock()
|
|
|
|
// Use defer to ensure cleanup even if fn panics. This prevents
|
|
// waiters from hanging indefinitely and removes the stale key.
|
|
defer func() {
|
|
g.mu.Lock()
|
|
delete(g.m, key)
|
|
c.wg.Done()
|
|
g.mu.Unlock()
|
|
}()
|
|
|
|
c.val, c.err = fn()
|
|
return c.val, c.err
|
|
}
|