Files
s3/weed/filer/reader_at_test.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

205 lines
5.2 KiB
Go

package filer
import (
"bytes"
"context"
"io"
"math"
"strconv"
"testing"
)
type mockChunkCache struct {
}
func (m *mockChunkCache) GetChunk(fileId string, minSize uint64) (data []byte) {
x, _ := strconv.Atoi(fileId)
data = make([]byte, minSize)
for i := 0; i < int(minSize); i++ {
data[i] = byte(x)
}
return data
}
func (m *mockChunkCache) ReadChunkAt(data []byte, fileId string, offset uint64) (n int, err error) {
x, _ := strconv.Atoi(fileId)
for i := 0; i < len(data); i++ {
data[i] = byte(x)
}
return len(data), nil
}
func (m *mockChunkCache) SetChunk(fileId string, data []byte) {
}
func (m *mockChunkCache) GetMaxFilePartSizeInCache() uint64 {
return 0
}
func (m *mockChunkCache) IsInCache(fileId string, lockNeeded bool) (answer bool) {
return false
}
func TestReaderAt(t *testing.T) {
visibles := NewIntervalList[*VisibleInterval]()
addVisibleInterval(visibles, &VisibleInterval{
start: 1,
stop: 2,
fileId: "1",
chunkSize: 9,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 3,
stop: 4,
fileId: "3",
chunkSize: 1,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 5,
stop: 6,
fileId: "5",
chunkSize: 2,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 7,
stop: 9,
fileId: "7",
chunkSize: 2,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 9,
stop: 10,
fileId: "9",
chunkSize: 2,
})
readerAt := &ChunkReadAt{
chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
fileSize: 10,
readerCache: NewReaderCache(3, &mockChunkCache{}, nil),
readerPattern: NewReaderPattern(),
}
testReadAt(t, readerAt, 0, 10, 10, io.EOF, nil, nil)
testReadAt(t, readerAt, 0, 12, 10, io.EOF, nil, nil)
testReadAt(t, readerAt, 2, 8, 8, io.EOF, nil, nil)
testReadAt(t, readerAt, 3, 6, 6, nil, nil, nil)
}
func testReadAt(t *testing.T, readerAt *ChunkReadAt, offset int64, size int, expectedN int, expectedErr error, data, expectedData []byte) {
if data == nil {
data = make([]byte, size)
}
n, _, err := readerAt.doReadAt(context.Background(), data, offset)
if expectedN != n {
t.Errorf("unexpected read size: %d, expect: %d", n, expectedN)
}
if err != expectedErr {
t.Errorf("unexpected read error: %v, expect: %v", err, expectedErr)
}
if expectedData != nil && !bytes.Equal(data, expectedData) {
t.Errorf("unexpected read data: %v, expect: %v", data, expectedData)
}
}
func TestReaderAt0(t *testing.T) {
visibles := NewIntervalList[*VisibleInterval]()
addVisibleInterval(visibles, &VisibleInterval{
start: 2,
stop: 5,
fileId: "1",
chunkSize: 9,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 7,
stop: 9,
fileId: "2",
chunkSize: 9,
})
readerAt := &ChunkReadAt{
chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
fileSize: 10,
readerCache: NewReaderCache(3, &mockChunkCache{}, nil),
readerPattern: NewReaderPattern(),
}
testReadAt(t, readerAt, 0, 10, 10, io.EOF, nil, nil)
testReadAt(t, readerAt, 3, 16, 7, io.EOF, nil, nil)
testReadAt(t, readerAt, 3, 5, 5, nil, nil, nil)
testReadAt(t, readerAt, 11, 5, 0, io.EOF, nil, nil)
testReadAt(t, readerAt, 10, 5, 0, io.EOF, nil, nil)
}
func TestReaderAt1(t *testing.T) {
visibles := NewIntervalList[*VisibleInterval]()
addVisibleInterval(visibles, &VisibleInterval{
start: 2,
stop: 5,
fileId: "1",
chunkSize: 9,
})
readerAt := &ChunkReadAt{
chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
fileSize: 20,
readerCache: NewReaderCache(3, &mockChunkCache{}, nil),
readerPattern: NewReaderPattern(),
}
testReadAt(t, readerAt, 0, 20, 20, io.EOF, nil, nil)
testReadAt(t, readerAt, 1, 7, 7, nil, nil, nil)
testReadAt(t, readerAt, 0, 1, 1, nil, nil, nil)
testReadAt(t, readerAt, 18, 4, 2, io.EOF, nil, nil)
testReadAt(t, readerAt, 12, 4, 4, nil, nil, nil)
testReadAt(t, readerAt, 4, 20, 16, io.EOF, nil, nil)
testReadAt(t, readerAt, 4, 10, 10, nil, nil, nil)
testReadAt(t, readerAt, 1, 10, 10, nil, nil, nil)
}
func TestReaderAtGappedChunksDoNotLeak(t *testing.T) {
visibles := NewIntervalList[*VisibleInterval]()
addVisibleInterval(visibles, &VisibleInterval{
start: 2,
stop: 3,
fileId: "1",
chunkSize: 5,
})
addVisibleInterval(visibles, &VisibleInterval{
start: 7,
stop: 9,
fileId: "1",
chunkSize: 4,
})
readerAt := &ChunkReadAt{
chunkViews: ViewFromVisibleIntervals(visibles, 0, math.MaxInt64),
fileSize: 9,
readerCache: NewReaderCache(3, &mockChunkCache{}, nil),
readerPattern: NewReaderPattern(),
}
testReadAt(t, readerAt, 0, 9, 9, io.EOF, []byte{2, 2, 2, 2, 2, 2, 2, 2, 2}, []byte{0, 0, 1, 0, 0, 0, 0, 1, 1})
testReadAt(t, readerAt, 1, 8, 8, io.EOF, []byte{2, 2, 2, 2, 2, 2, 2, 2}, []byte{0, 1, 0, 0, 0, 0, 1, 1})
}
func TestReaderAtSparseFileDoesNotLeak(t *testing.T) {
readerAt := &ChunkReadAt{
chunkViews: ViewFromVisibleIntervals(NewIntervalList[*VisibleInterval](), 0, math.MaxInt64),
fileSize: 3,
readerCache: NewReaderCache(3, &mockChunkCache{}, nil),
readerPattern: NewReaderPattern(),
}
testReadAt(t, readerAt, 0, 3, 3, io.EOF, []byte{2, 2, 2}, []byte{0, 0, 0})
testReadAt(t, readerAt, 1, 2, 2, io.EOF, []byte{2, 2}, []byte{0, 0})
}