mirror of
https://github.com/hanzoai/s3.git
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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.
105 lines
4.0 KiB
Go
105 lines
4.0 KiB
Go
package mount
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import (
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"sync/atomic"
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"testing"
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)
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const mb = 1 << 20
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func TestWriterPatternSequentialAndHysteresis(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(0, mb) // near(0 vs frontier 0) -> +1
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wp.MonitorWriteAt(mb, mb) // +2
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wp.MonitorWriteAt(2*mb, mb) // +3 (capped)
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if !wp.IsSequentialMode() {
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t.Fatal("a stream from offset 0 must be sequential")
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}
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// a single far outlier does not flip to random (hysteresis): +3 -> +2
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wp.MonitorWriteAt(900*mb, mb)
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if !wp.IsSequentialMode() {
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t.Fatal("a single outlier write must not flip out of sequential mode")
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}
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}
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func TestWriterPatternFarFirstWriteIsRandom(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(500*mb, mb) // far from frontier 0 -> -1
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if wp.IsSequentialMode() {
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t.Fatal("a far first write should be random")
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}
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}
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func TestWriterPatternToleranceAbsorbsReorder(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(0, mb) // +1, frontier 1MB
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wp.MonitorWriteAt(6*mb, mb) // |6-1|=5MB <= 8MB tolerance -> near, +2, frontier 7MB
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wp.MonitorWriteAt(3*mb, mb) // |3-7|=4MB <= 8MB -> near, +3
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if !wp.IsSequentialMode() {
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t.Fatal("reordered writes within tolerance must stay sequential")
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}
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}
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func TestWriterPatternRandomRecoveryNeedsHysteresis(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(100*mb, mb) // far -> -1
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wp.MonitorWriteAt(300*mb, mb) // far -> -2
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wp.MonitorWriteAt(500*mb, mb) // far -> -3 (capped), frontier 501MB
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// a single near write must not immediately flip back to sequential: -3 -> -2
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wp.MonitorWriteAt(501*mb, mb)
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if wp.IsSequentialMode() {
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t.Fatal("one near write must not flip back from deep random mode")
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}
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}
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// The max-frontier (vs the old atomic.Swap of the last write's stop offset) is the
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// load-bearing difference of this detector: the frontier must never move backward,
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// or a backward write would lower the baseline and make later far writes look near.
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func TestWriterPatternFrontierNeverRegresses(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(500*mb, mb) // far first write -> -1, frontier 501MB
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wp.MonitorWriteAt(0, mb) // a backward write must not pull the frontier back
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if got := atomic.LoadInt64(&wp.writeFrontier); got != 501*mb {
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t.Fatalf("frontier regressed to %d; the max-frontier must never move backward", got)
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}
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// Behavioral consequence: writes far below the preserved frontier stay random.
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// Had the frontier regressed to ~1MB, this would wrongly read as sequential.
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if wp.IsSequentialMode() {
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t.Fatal("writes far below the preserved frontier must remain random")
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}
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}
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// SeqTolerance is the central new tuning knob; pin both sides of the inclusive
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// boundary so an off-by-one or a '<' vs '<=' change can't slip through silently.
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func TestWriterPatternToleranceBoundary(t *testing.T) {
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atBoundary := NewWriterPattern(2 * mb)
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atBoundary.MonitorWriteAt(SeqTolerance, 0) // diff == SeqTolerance -> near (inclusive), +1
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if !atBoundary.IsSequentialMode() {
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t.Fatal("a write exactly at frontier+SeqTolerance must count as sequential")
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}
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pastBoundary := NewWriterPattern(2 * mb)
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pastBoundary.MonitorWriteAt(SeqTolerance+1, 0) // diff == SeqTolerance+1 -> far, -1
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if pastBoundary.IsSequentialMode() {
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t.Fatal("a write one byte past frontier+SeqTolerance must count as random")
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}
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}
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// The perf-relevant escape from random (swap-file) mode: sustained near writes must
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// climb the counter back out of the negative floor and re-enter sequential (RAM) mode.
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func TestWriterPatternRecoversToSequential(t *testing.T) {
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wp := NewWriterPattern(2 * mb)
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wp.MonitorWriteAt(100*mb, mb) // far -> -1
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wp.MonitorWriteAt(300*mb, mb) // far -> -2
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wp.MonitorWriteAt(500*mb, mb) // far -> -3 (capped), frontier 501MB
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if wp.IsSequentialMode() {
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t.Fatal("three far writes must be random")
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}
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// contiguous near writes: -3 -> -2 -> -1 -> 0 -> +1, back into sequential mode
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for i := int64(0); i < 4; i++ {
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wp.MonitorWriteAt(501*mb+i*mb, mb)
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}
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if !wp.IsSequentialMode() {
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t.Fatal("sustained near writes must recover sequential mode (escape the swap-file cliff)")
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}
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}
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