Files
s3/weed/util/concurrent_read_map.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

61 lines
1.2 KiB
Go

package util
import (
"sync"
)
// A mostly for read map, which can thread-safely
// initialize the map entries.
type ConcurrentReadMap struct {
sync.RWMutex
items map[string]interface{}
}
func NewConcurrentReadMap() *ConcurrentReadMap {
return &ConcurrentReadMap{items: make(map[string]interface{})}
}
func (m *ConcurrentReadMap) initMapEntry(key string, newEntry func() interface{}) (value interface{}) {
m.Lock()
defer m.Unlock()
if value, ok := m.items[key]; ok {
return value
}
value = newEntry()
m.items[key] = value
return value
}
func (m *ConcurrentReadMap) Get(key string, newEntry func() interface{}) interface{} {
m.RLock()
if value, ok := m.items[key]; ok {
m.RUnlock()
return value
}
m.RUnlock()
return m.initMapEntry(key, newEntry)
}
func (m *ConcurrentReadMap) Find(key string) (interface{}, bool) {
m.RLock()
value, ok := m.items[key]
m.RUnlock()
return value, ok
}
func (m *ConcurrentReadMap) Items() (itemsCopy []interface{}) {
m.RLock()
for _, i := range m.items {
itemsCopy = append(itemsCopy, i)
}
m.RUnlock()
return itemsCopy
}
func (m *ConcurrentReadMap) Delete(key string) {
m.Lock()
delete(m.items, key)
m.Unlock()
}