538a868384
* core/rawdb, cmd, ethdb, eth: implement freezer tail deletion * core/rawdb: address comments from martin and sina * core/rawdb: fixes cornercase in tail deletion * core/rawdb: separate metadata into a standalone file * core/rawdb: remove unused code * core/rawdb: add random test * core/rawdb: polish code * core/rawdb: fsync meta file before manipulating the index * core/rawdb: fix typo * core/rawdb: address comments
1297 lines
34 KiB
Go
1297 lines
34 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rawdb
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"math/rand"
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"os"
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"path/filepath"
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"reflect"
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"sync/atomic"
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"testing"
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"testing/quick"
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"time"
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"github.com/davecgh/go-spew/spew"
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"github.com/ethereum/go-ethereum/metrics"
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"github.com/stretchr/testify/require"
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)
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func init() {
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rand.Seed(time.Now().Unix())
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}
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// TestFreezerBasics test initializing a freezertable from scratch, writing to the table,
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// and reading it back.
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func TestFreezerBasics(t *testing.T) {
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t.Parallel()
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// set cutoff at 50 bytes
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f, err := newTable(os.TempDir(),
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fmt.Sprintf("unittest-%d", rand.Uint64()),
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metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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defer f.Close()
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// Write 15 bytes 255 times, results in 85 files
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writeChunks(t, f, 255, 15)
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//print(t, f, 0)
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//print(t, f, 1)
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//print(t, f, 2)
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//
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//db[0] = 000000000000000000000000000000
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//db[1] = 010101010101010101010101010101
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//db[2] = 020202020202020202020202020202
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for y := 0; y < 255; y++ {
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exp := getChunk(15, y)
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got, err := f.Retrieve(uint64(y))
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if err != nil {
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t.Fatalf("reading item %d: %v", y, err)
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}
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if !bytes.Equal(got, exp) {
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t.Fatalf("test %d, got \n%x != \n%x", y, got, exp)
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}
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}
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// Check that we cannot read too far
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_, err = f.Retrieve(uint64(255))
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if err != errOutOfBounds {
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t.Fatal(err)
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}
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}
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// TestFreezerBasicsClosing tests same as TestFreezerBasics, but also closes and reopens the freezer between
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// every operation
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func TestFreezerBasicsClosing(t *testing.T) {
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t.Parallel()
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// set cutoff at 50 bytes
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var (
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fname = fmt.Sprintf("basics-close-%d", rand.Uint64())
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rm, wm, sg = metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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f *freezerTable
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err error
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)
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f, err = newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 255 times, results in 85 files.
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// In-between writes, the table is closed and re-opened.
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for x := 0; x < 255; x++ {
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data := getChunk(15, x)
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batch := f.newBatch()
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require.NoError(t, batch.AppendRaw(uint64(x), data))
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require.NoError(t, batch.commit())
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f.Close()
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f, err = newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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}
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defer f.Close()
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for y := 0; y < 255; y++ {
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exp := getChunk(15, y)
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got, err := f.Retrieve(uint64(y))
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(got, exp) {
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t.Fatalf("test %d, got \n%x != \n%x", y, got, exp)
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}
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f.Close()
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f, err = newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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}
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}
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// TestFreezerRepairDanglingHead tests that we can recover if index entries are removed
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func TestFreezerRepairDanglingHead(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("dangling_headtest-%d", rand.Uint64())
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// Fill table
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 255 times
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writeChunks(t, f, 255, 15)
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// The last item should be there
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if _, err = f.Retrieve(0xfe); err != nil {
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t.Fatal(err)
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}
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f.Close()
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}
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// open the index
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idxFile, err := os.OpenFile(filepath.Join(os.TempDir(), fmt.Sprintf("%s.ridx", fname)), os.O_RDWR, 0644)
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if err != nil {
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t.Fatalf("Failed to open index file: %v", err)
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}
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// Remove 4 bytes
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stat, err := idxFile.Stat()
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if err != nil {
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t.Fatalf("Failed to stat index file: %v", err)
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}
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idxFile.Truncate(stat.Size() - 4)
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idxFile.Close()
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// Now open it again
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// The last item should be missing
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if _, err = f.Retrieve(0xff); err == nil {
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t.Errorf("Expected error for missing index entry")
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}
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// The one before should still be there
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if _, err = f.Retrieve(0xfd); err != nil {
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t.Fatalf("Expected no error, got %v", err)
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}
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}
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}
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// TestFreezerRepairDanglingHeadLarge tests that we can recover if very many index entries are removed
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func TestFreezerRepairDanglingHeadLarge(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("dangling_headtest-%d", rand.Uint64())
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// Fill a table and close it
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 255 times
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writeChunks(t, f, 255, 15)
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// The last item should be there
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if _, err = f.Retrieve(f.items - 1); err != nil {
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t.Fatal(err)
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}
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f.Close()
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}
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// open the index
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idxFile, err := os.OpenFile(filepath.Join(os.TempDir(), fmt.Sprintf("%s.ridx", fname)), os.O_RDWR, 0644)
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if err != nil {
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t.Fatalf("Failed to open index file: %v", err)
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}
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// Remove everything but the first item, and leave data unaligned
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// 0-indexEntry, 1-indexEntry, corrupt-indexEntry
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idxFile.Truncate(2*indexEntrySize + indexEntrySize/2)
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idxFile.Close()
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// Now open it again
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// The first item should be there
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if _, err = f.Retrieve(0); err != nil {
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t.Fatal(err)
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}
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// The second item should be missing
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if _, err = f.Retrieve(1); err == nil {
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t.Errorf("Expected error for missing index entry")
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}
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// We should now be able to store items again, from item = 1
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batch := f.newBatch()
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for x := 1; x < 0xff; x++ {
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require.NoError(t, batch.AppendRaw(uint64(x), getChunk(15, ^x)))
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}
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require.NoError(t, batch.commit())
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f.Close()
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}
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// And if we open it, we should now be able to read all of them (new values)
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{
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f, _ := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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for y := 1; y < 255; y++ {
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exp := getChunk(15, ^y)
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got, err := f.Retrieve(uint64(y))
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(got, exp) {
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t.Fatalf("test %d, got \n%x != \n%x", y, got, exp)
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}
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}
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}
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}
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// TestSnappyDetection tests that we fail to open a snappy database and vice versa
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func TestSnappyDetection(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("snappytest-%d", rand.Uint64())
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// Open with snappy
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 255 times
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writeChunks(t, f, 255, 15)
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f.Close()
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}
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// Open without snappy
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, false, false)
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if err != nil {
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t.Fatal(err)
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}
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if _, err = f.Retrieve(0); err == nil {
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f.Close()
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t.Fatalf("expected empty table")
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}
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}
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// Open with snappy
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// There should be 255 items
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if _, err = f.Retrieve(0xfe); err != nil {
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f.Close()
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t.Fatalf("expected no error, got %v", err)
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}
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}
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}
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func assertFileSize(f string, size int64) error {
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stat, err := os.Stat(f)
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if err != nil {
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return err
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}
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if stat.Size() != size {
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return fmt.Errorf("error, expected size %d, got %d", size, stat.Size())
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}
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return nil
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}
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// TestFreezerRepairDanglingIndex checks that if the index has more entries than there are data,
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// the index is repaired
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func TestFreezerRepairDanglingIndex(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("dangling_indextest-%d", rand.Uint64())
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// Fill a table and close it
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 9 times : 150 bytes
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writeChunks(t, f, 9, 15)
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// The last item should be there
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if _, err = f.Retrieve(f.items - 1); err != nil {
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f.Close()
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t.Fatal(err)
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}
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f.Close()
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// File sizes should be 45, 45, 45 : items[3, 3, 3)
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}
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// Crop third file
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fileToCrop := filepath.Join(os.TempDir(), fmt.Sprintf("%s.0002.rdat", fname))
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// Truncate third file: 45 ,45, 20
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{
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if err := assertFileSize(fileToCrop, 45); err != nil {
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t.Fatal(err)
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}
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file, err := os.OpenFile(fileToCrop, os.O_RDWR, 0644)
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if err != nil {
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t.Fatal(err)
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}
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file.Truncate(20)
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file.Close()
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}
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// Open db it again
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// It should restore the file(s) to
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// 45, 45, 15
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// with 3+3+1 items
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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defer f.Close()
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if f.items != 7 {
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t.Fatalf("expected %d items, got %d", 7, f.items)
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}
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if err := assertFileSize(fileToCrop, 15); err != nil {
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t.Fatal(err)
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}
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}
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}
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func TestFreezerTruncate(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("truncation-%d", rand.Uint64())
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// Fill table
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 15 bytes 30 times
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writeChunks(t, f, 30, 15)
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// The last item should be there
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if _, err = f.Retrieve(f.items - 1); err != nil {
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t.Fatal(err)
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}
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f.Close()
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}
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// Reopen, truncate
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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defer f.Close()
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f.truncateHead(10) // 150 bytes
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if f.items != 10 {
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t.Fatalf("expected %d items, got %d", 10, f.items)
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}
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// 45, 45, 45, 15 -- bytes should be 15
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if f.headBytes != 15 {
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t.Fatalf("expected %d bytes, got %d", 15, f.headBytes)
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}
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}
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}
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// TestFreezerRepairFirstFile tests a head file with the very first item only half-written.
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// That will rewind the index, and _should_ truncate the head file
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func TestFreezerRepairFirstFile(t *testing.T) {
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t.Parallel()
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
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fname := fmt.Sprintf("truncationfirst-%d", rand.Uint64())
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// Fill table
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
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if err != nil {
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t.Fatal(err)
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}
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// Write 80 bytes, splitting out into two files
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batch := f.newBatch()
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require.NoError(t, batch.AppendRaw(0, getChunk(40, 0xFF)))
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require.NoError(t, batch.AppendRaw(1, getChunk(40, 0xEE)))
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require.NoError(t, batch.commit())
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// The last item should be there
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if _, err = f.Retrieve(1); err != nil {
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t.Fatal(err)
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}
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f.Close()
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}
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// Truncate the file in half
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fileToCrop := filepath.Join(os.TempDir(), fmt.Sprintf("%s.0001.rdat", fname))
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{
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if err := assertFileSize(fileToCrop, 40); err != nil {
|
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t.Fatal(err)
|
|
}
|
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file, err := os.OpenFile(fileToCrop, os.O_RDWR, 0644)
|
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if err != nil {
|
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t.Fatal(err)
|
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}
|
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file.Truncate(20)
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file.Close()
|
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}
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|
|
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// Reopen
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{
|
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
|
|
if err != nil {
|
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t.Fatal(err)
|
|
}
|
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if f.items != 1 {
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f.Close()
|
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t.Fatalf("expected %d items, got %d", 0, f.items)
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}
|
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|
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// Write 40 bytes
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batch := f.newBatch()
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require.NoError(t, batch.AppendRaw(1, getChunk(40, 0xDD)))
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require.NoError(t, batch.commit())
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|
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f.Close()
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|
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// Should have been truncated down to zero and then 40 written
|
|
if err := assertFileSize(fileToCrop, 40); err != nil {
|
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t.Fatal(err)
|
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}
|
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}
|
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}
|
|
|
|
// TestFreezerReadAndTruncate tests:
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|
// - we have a table open
|
|
// - do some reads, so files are open in readonly
|
|
// - truncate so those files are 'removed'
|
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// - check that we did not keep the rdonly file descriptors
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|
func TestFreezerReadAndTruncate(t *testing.T) {
|
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t.Parallel()
|
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rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("read_truncate-%d", rand.Uint64())
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|
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// Fill table
|
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{
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f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
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// Write 15 bytes 30 times
|
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writeChunks(t, f, 30, 15)
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|
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// The last item should be there
|
|
if _, err = f.Retrieve(f.items - 1); err != nil {
|
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t.Fatal(err)
|
|
}
|
|
f.Close()
|
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}
|
|
|
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// Reopen and read all files
|
|
{
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
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if f.items != 30 {
|
|
f.Close()
|
|
t.Fatalf("expected %d items, got %d", 0, f.items)
|
|
}
|
|
for y := byte(0); y < 30; y++ {
|
|
f.Retrieve(uint64(y))
|
|
}
|
|
|
|
// Now, truncate back to zero
|
|
f.truncateHead(0)
|
|
|
|
// Write the data again
|
|
batch := f.newBatch()
|
|
for x := 0; x < 30; x++ {
|
|
require.NoError(t, batch.AppendRaw(uint64(x), getChunk(15, ^x)))
|
|
}
|
|
require.NoError(t, batch.commit())
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
func TestFreezerOffset(t *testing.T) {
|
|
t.Parallel()
|
|
rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("offset-%d", rand.Uint64())
|
|
|
|
// Fill table
|
|
{
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Write 6 x 20 bytes, splitting out into three files
|
|
batch := f.newBatch()
|
|
require.NoError(t, batch.AppendRaw(0, getChunk(20, 0xFF)))
|
|
require.NoError(t, batch.AppendRaw(1, getChunk(20, 0xEE)))
|
|
|
|
require.NoError(t, batch.AppendRaw(2, getChunk(20, 0xdd)))
|
|
require.NoError(t, batch.AppendRaw(3, getChunk(20, 0xcc)))
|
|
|
|
require.NoError(t, batch.AppendRaw(4, getChunk(20, 0xbb)))
|
|
require.NoError(t, batch.AppendRaw(5, getChunk(20, 0xaa)))
|
|
require.NoError(t, batch.commit())
|
|
|
|
t.Log(f.dumpIndexString(0, 100))
|
|
f.Close()
|
|
}
|
|
|
|
// Now crop it.
|
|
{
|
|
// delete files 0 and 1
|
|
for i := 0; i < 2; i++ {
|
|
p := filepath.Join(os.TempDir(), fmt.Sprintf("%v.%04d.rdat", fname, i))
|
|
if err := os.Remove(p); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
// Read the index file
|
|
p := filepath.Join(os.TempDir(), fmt.Sprintf("%v.ridx", fname))
|
|
indexFile, err := os.OpenFile(p, os.O_RDWR, 0644)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
indexBuf := make([]byte, 7*indexEntrySize)
|
|
indexFile.Read(indexBuf)
|
|
|
|
// Update the index file, so that we store
|
|
// [ file = 2, offset = 4 ] at index zero
|
|
|
|
zeroIndex := indexEntry{
|
|
filenum: uint32(2), // First file is 2
|
|
offset: uint32(4), // We have removed four items
|
|
}
|
|
buf := zeroIndex.append(nil)
|
|
|
|
// Overwrite index zero
|
|
copy(indexBuf, buf)
|
|
|
|
// Remove the four next indices by overwriting
|
|
copy(indexBuf[indexEntrySize:], indexBuf[indexEntrySize*5:])
|
|
indexFile.WriteAt(indexBuf, 0)
|
|
|
|
// Need to truncate the moved index items
|
|
indexFile.Truncate(indexEntrySize * (1 + 2))
|
|
indexFile.Close()
|
|
}
|
|
|
|
// Now open again
|
|
{
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
t.Log(f.dumpIndexString(0, 100))
|
|
|
|
// It should allow writing item 6.
|
|
batch := f.newBatch()
|
|
require.NoError(t, batch.AppendRaw(6, getChunk(20, 0x99)))
|
|
require.NoError(t, batch.commit())
|
|
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
1: errOutOfBounds,
|
|
2: errOutOfBounds,
|
|
3: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x99),
|
|
})
|
|
}
|
|
|
|
// Edit the index again, with a much larger initial offset of 1M.
|
|
{
|
|
// Read the index file
|
|
p := filepath.Join(os.TempDir(), fmt.Sprintf("%v.ridx", fname))
|
|
indexFile, err := os.OpenFile(p, os.O_RDWR, 0644)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
indexBuf := make([]byte, 3*indexEntrySize)
|
|
indexFile.Read(indexBuf)
|
|
|
|
// Update the index file, so that we store
|
|
// [ file = 2, offset = 1M ] at index zero
|
|
|
|
zeroIndex := indexEntry{
|
|
offset: uint32(1000000), // We have removed 1M items
|
|
filenum: uint32(2), // First file is 2
|
|
}
|
|
buf := zeroIndex.append(nil)
|
|
|
|
// Overwrite index zero
|
|
copy(indexBuf, buf)
|
|
indexFile.WriteAt(indexBuf, 0)
|
|
indexFile.Close()
|
|
}
|
|
|
|
// Check that existing items have been moved to index 1M.
|
|
{
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
t.Log(f.dumpIndexString(0, 100))
|
|
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
1: errOutOfBounds,
|
|
2: errOutOfBounds,
|
|
3: errOutOfBounds,
|
|
999999: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
1000000: getChunk(20, 0xbb),
|
|
1000001: getChunk(20, 0xaa),
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestTruncateTail(t *testing.T) {
|
|
t.Parallel()
|
|
rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("truncate-tail-%d", rand.Uint64())
|
|
|
|
// Fill table
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Write 7 x 20 bytes, splitting out into four files
|
|
batch := f.newBatch()
|
|
require.NoError(t, batch.AppendRaw(0, getChunk(20, 0xFF)))
|
|
require.NoError(t, batch.AppendRaw(1, getChunk(20, 0xEE)))
|
|
require.NoError(t, batch.AppendRaw(2, getChunk(20, 0xdd)))
|
|
require.NoError(t, batch.AppendRaw(3, getChunk(20, 0xcc)))
|
|
require.NoError(t, batch.AppendRaw(4, getChunk(20, 0xbb)))
|
|
require.NoError(t, batch.AppendRaw(5, getChunk(20, 0xaa)))
|
|
require.NoError(t, batch.AppendRaw(6, getChunk(20, 0x11)))
|
|
require.NoError(t, batch.commit())
|
|
|
|
// nothing to do, all the items should still be there.
|
|
f.truncateTail(0)
|
|
fmt.Println(f.dumpIndexString(0, 1000))
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
0: getChunk(20, 0xFF),
|
|
1: getChunk(20, 0xEE),
|
|
2: getChunk(20, 0xdd),
|
|
3: getChunk(20, 0xcc),
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
|
|
// truncate single element( item 0 ), deletion is only supported at file level
|
|
f.truncateTail(1)
|
|
fmt.Println(f.dumpIndexString(0, 1000))
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
1: getChunk(20, 0xEE),
|
|
2: getChunk(20, 0xdd),
|
|
3: getChunk(20, 0xcc),
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
|
|
// Reopen the table, the deletion information should be persisted as well
|
|
f.Close()
|
|
f, err = newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
1: getChunk(20, 0xEE),
|
|
2: getChunk(20, 0xdd),
|
|
3: getChunk(20, 0xcc),
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
|
|
// truncate two elements( item 0, item 1 ), the file 0 should be deleted
|
|
f.truncateTail(2)
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
1: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
2: getChunk(20, 0xdd),
|
|
3: getChunk(20, 0xcc),
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
|
|
// Reopen the table, the above testing should still pass
|
|
f.Close()
|
|
f, err = newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
1: errOutOfBounds,
|
|
})
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
2: getChunk(20, 0xdd),
|
|
3: getChunk(20, 0xcc),
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
|
|
// truncate all, the entire freezer should be deleted
|
|
f.truncateTail(7)
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds,
|
|
1: errOutOfBounds,
|
|
2: errOutOfBounds,
|
|
3: errOutOfBounds,
|
|
4: errOutOfBounds,
|
|
5: errOutOfBounds,
|
|
6: errOutOfBounds,
|
|
})
|
|
}
|
|
|
|
func TestTruncateHead(t *testing.T) {
|
|
t.Parallel()
|
|
rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("truncate-head-blow-tail-%d", rand.Uint64())
|
|
|
|
// Fill table
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Write 7 x 20 bytes, splitting out into four files
|
|
batch := f.newBatch()
|
|
require.NoError(t, batch.AppendRaw(0, getChunk(20, 0xFF)))
|
|
require.NoError(t, batch.AppendRaw(1, getChunk(20, 0xEE)))
|
|
require.NoError(t, batch.AppendRaw(2, getChunk(20, 0xdd)))
|
|
require.NoError(t, batch.AppendRaw(3, getChunk(20, 0xcc)))
|
|
require.NoError(t, batch.AppendRaw(4, getChunk(20, 0xbb)))
|
|
require.NoError(t, batch.AppendRaw(5, getChunk(20, 0xaa)))
|
|
require.NoError(t, batch.AppendRaw(6, getChunk(20, 0x11)))
|
|
require.NoError(t, batch.commit())
|
|
|
|
f.truncateTail(4) // Tail = 4
|
|
|
|
// NewHead is required to be 3, the entire table should be truncated
|
|
f.truncateHead(4)
|
|
checkRetrieveError(t, f, map[uint64]error{
|
|
0: errOutOfBounds, // Deleted by tail
|
|
1: errOutOfBounds, // Deleted by tail
|
|
2: errOutOfBounds, // Deleted by tail
|
|
3: errOutOfBounds, // Deleted by tail
|
|
4: errOutOfBounds, // Deleted by Head
|
|
5: errOutOfBounds, // Deleted by Head
|
|
6: errOutOfBounds, // Deleted by Head
|
|
})
|
|
|
|
// Append new items
|
|
batch = f.newBatch()
|
|
require.NoError(t, batch.AppendRaw(4, getChunk(20, 0xbb)))
|
|
require.NoError(t, batch.AppendRaw(5, getChunk(20, 0xaa)))
|
|
require.NoError(t, batch.AppendRaw(6, getChunk(20, 0x11)))
|
|
require.NoError(t, batch.commit())
|
|
|
|
checkRetrieve(t, f, map[uint64][]byte{
|
|
4: getChunk(20, 0xbb),
|
|
5: getChunk(20, 0xaa),
|
|
6: getChunk(20, 0x11),
|
|
})
|
|
}
|
|
|
|
func checkRetrieve(t *testing.T, f *freezerTable, items map[uint64][]byte) {
|
|
t.Helper()
|
|
|
|
for item, wantBytes := range items {
|
|
value, err := f.Retrieve(item)
|
|
if err != nil {
|
|
t.Fatalf("can't get expected item %d: %v", item, err)
|
|
}
|
|
if !bytes.Equal(value, wantBytes) {
|
|
t.Fatalf("item %d has wrong value %x (want %x)", item, value, wantBytes)
|
|
}
|
|
}
|
|
}
|
|
|
|
func checkRetrieveError(t *testing.T, f *freezerTable, items map[uint64]error) {
|
|
t.Helper()
|
|
|
|
for item, wantError := range items {
|
|
value, err := f.Retrieve(item)
|
|
if err == nil {
|
|
t.Fatalf("unexpected value %x for item %d, want error %v", item, value, wantError)
|
|
}
|
|
if err != wantError {
|
|
t.Fatalf("wrong error for item %d: %v", item, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Gets a chunk of data, filled with 'b'
|
|
func getChunk(size int, b int) []byte {
|
|
data := make([]byte, size)
|
|
for i := range data {
|
|
data[i] = byte(b)
|
|
}
|
|
return data
|
|
}
|
|
|
|
// TODO (?)
|
|
// - test that if we remove several head-files, aswell as data last data-file,
|
|
// the index is truncated accordingly
|
|
// Right now, the freezer would fail on these conditions:
|
|
// 1. have data files d0, d1, d2, d3
|
|
// 2. remove d2,d3
|
|
//
|
|
// However, all 'normal' failure modes arising due to failing to sync() or save a file
|
|
// should be handled already, and the case described above can only (?) happen if an
|
|
// external process/user deletes files from the filesystem.
|
|
|
|
func writeChunks(t *testing.T, ft *freezerTable, n int, length int) {
|
|
t.Helper()
|
|
|
|
batch := ft.newBatch()
|
|
for i := 0; i < n; i++ {
|
|
if err := batch.AppendRaw(uint64(i), getChunk(length, i)); err != nil {
|
|
t.Fatalf("AppendRaw(%d, ...) returned error: %v", i, err)
|
|
}
|
|
}
|
|
if err := batch.commit(); err != nil {
|
|
t.Fatalf("Commit returned error: %v", err)
|
|
}
|
|
}
|
|
|
|
// TestSequentialRead does some basic tests on the RetrieveItems.
|
|
func TestSequentialRead(t *testing.T) {
|
|
rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("batchread-%d", rand.Uint64())
|
|
{ // Fill table
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// Write 15 bytes 30 times
|
|
writeChunks(t, f, 30, 15)
|
|
f.DumpIndex(0, 30)
|
|
f.Close()
|
|
}
|
|
{ // Open it, iterate, verify iteration
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 50, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
items, err := f.RetrieveItems(0, 10000, 100000)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if have, want := len(items), 30; have != want {
|
|
t.Fatalf("want %d items, have %d ", want, have)
|
|
}
|
|
for i, have := range items {
|
|
want := getChunk(15, i)
|
|
if !bytes.Equal(want, have) {
|
|
t.Fatalf("data corruption: have\n%x\n, want \n%x\n", have, want)
|
|
}
|
|
}
|
|
f.Close()
|
|
}
|
|
{ // Open it, iterate, verify byte limit. The byte limit is less than item
|
|
// size, so each lookup should only return one item
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 40, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
items, err := f.RetrieveItems(0, 10000, 10)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if have, want := len(items), 1; have != want {
|
|
t.Fatalf("want %d items, have %d ", want, have)
|
|
}
|
|
for i, have := range items {
|
|
want := getChunk(15, i)
|
|
if !bytes.Equal(want, have) {
|
|
t.Fatalf("data corruption: have\n%x\n, want \n%x\n", have, want)
|
|
}
|
|
}
|
|
f.Close()
|
|
}
|
|
}
|
|
|
|
// TestSequentialReadByteLimit does some more advanced tests on batch reads.
|
|
// These tests check that when the byte limit hits, we correctly abort in time,
|
|
// but also properly do all the deferred reads for the previous data, regardless
|
|
// of whether the data crosses a file boundary or not.
|
|
func TestSequentialReadByteLimit(t *testing.T) {
|
|
rm, wm, sg := metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge()
|
|
fname := fmt.Sprintf("batchread-2-%d", rand.Uint64())
|
|
{ // Fill table
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 100, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// Write 10 bytes 30 times,
|
|
// Splitting it at every 100 bytes (10 items)
|
|
writeChunks(t, f, 30, 10)
|
|
f.Close()
|
|
}
|
|
for i, tc := range []struct {
|
|
items uint64
|
|
limit uint64
|
|
want int
|
|
}{
|
|
{9, 89, 8},
|
|
{10, 99, 9},
|
|
{11, 109, 10},
|
|
{100, 89, 8},
|
|
{100, 99, 9},
|
|
{100, 109, 10},
|
|
} {
|
|
{
|
|
f, err := newTable(os.TempDir(), fname, rm, wm, sg, 100, true, false)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
items, err := f.RetrieveItems(0, tc.items, tc.limit)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if have, want := len(items), tc.want; have != want {
|
|
t.Fatalf("test %d: want %d items, have %d ", i, want, have)
|
|
}
|
|
for ii, have := range items {
|
|
want := getChunk(10, ii)
|
|
if !bytes.Equal(want, have) {
|
|
t.Fatalf("test %d: data corruption item %d: have\n%x\n, want \n%x\n", i, ii, have, want)
|
|
}
|
|
}
|
|
f.Close()
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestFreezerReadonly(t *testing.T) {
|
|
tmpdir := os.TempDir()
|
|
// Case 1: Check it fails on non-existent file.
|
|
_, err := newTable(tmpdir,
|
|
fmt.Sprintf("readonlytest-%d", rand.Uint64()),
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, true)
|
|
if err == nil {
|
|
t.Fatal("readonly table instantiation should fail for non-existent table")
|
|
}
|
|
|
|
// Case 2: Check that it fails on invalid index length.
|
|
fname := fmt.Sprintf("readonlytest-%d", rand.Uint64())
|
|
idxFile, err := openFreezerFileForAppend(filepath.Join(tmpdir, fmt.Sprintf("%s.ridx", fname)))
|
|
if err != nil {
|
|
t.Errorf("Failed to open index file: %v\n", err)
|
|
}
|
|
// size should not be a multiple of indexEntrySize.
|
|
idxFile.Write(make([]byte, 17))
|
|
idxFile.Close()
|
|
_, err = newTable(tmpdir, fname,
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, true)
|
|
if err == nil {
|
|
t.Errorf("readonly table instantiation should fail for invalid index size")
|
|
}
|
|
|
|
// Case 3: Open table non-readonly table to write some data.
|
|
// Then corrupt the head file and make sure opening the table
|
|
// again in readonly triggers an error.
|
|
fname = fmt.Sprintf("readonlytest-%d", rand.Uint64())
|
|
f, err := newTable(tmpdir, fname,
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, false)
|
|
if err != nil {
|
|
t.Fatalf("failed to instantiate table: %v", err)
|
|
}
|
|
writeChunks(t, f, 8, 32)
|
|
// Corrupt table file
|
|
if _, err := f.head.Write([]byte{1, 1}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := f.Close(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, err = newTable(tmpdir, fname,
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, true)
|
|
if err == nil {
|
|
t.Errorf("readonly table instantiation should fail for corrupt table file")
|
|
}
|
|
|
|
// Case 4: Write some data to a table and later re-open it as readonly.
|
|
// Should be successful.
|
|
fname = fmt.Sprintf("readonlytest-%d", rand.Uint64())
|
|
f, err = newTable(tmpdir, fname,
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, false)
|
|
if err != nil {
|
|
t.Fatalf("failed to instantiate table: %v\n", err)
|
|
}
|
|
writeChunks(t, f, 32, 128)
|
|
if err := f.Close(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
f, err = newTable(tmpdir, fname,
|
|
metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, true)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
v, err := f.Retrieve(10)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
exp := getChunk(128, 10)
|
|
if !bytes.Equal(v, exp) {
|
|
t.Errorf("retrieved value is incorrect")
|
|
}
|
|
|
|
// Case 5: Now write some data via a batch.
|
|
// This should fail either during AppendRaw or Commit
|
|
batch := f.newBatch()
|
|
writeErr := batch.AppendRaw(32, make([]byte, 1))
|
|
if writeErr == nil {
|
|
writeErr = batch.commit()
|
|
}
|
|
if writeErr == nil {
|
|
t.Fatalf("Writing to readonly table should fail")
|
|
}
|
|
}
|
|
|
|
// randTest performs random freezer table operations.
|
|
// Instances of this test are created by Generate.
|
|
type randTest []randTestStep
|
|
|
|
type randTestStep struct {
|
|
op int
|
|
items []uint64 // for append and retrieve
|
|
blobs [][]byte // for append
|
|
target uint64 // for truncate(head/tail)
|
|
err error // for debugging
|
|
}
|
|
|
|
const (
|
|
opReload = iota
|
|
opAppend
|
|
opRetrieve
|
|
opTruncateHead
|
|
opTruncateHeadAll
|
|
opTruncateTail
|
|
opTruncateTailAll
|
|
opCheckAll
|
|
opMax // boundary value, not an actual op
|
|
)
|
|
|
|
func getVals(first uint64, n int) [][]byte {
|
|
var ret [][]byte
|
|
for i := 0; i < n; i++ {
|
|
val := make([]byte, 8)
|
|
binary.BigEndian.PutUint64(val, first+uint64(i))
|
|
ret = append(ret, val)
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func (randTest) Generate(r *rand.Rand, size int) reflect.Value {
|
|
var (
|
|
deleted uint64 // The number of deleted items from tail
|
|
items []uint64 // The index of entries in table
|
|
|
|
// getItems retrieves the indexes for items in table.
|
|
getItems = func(n int) []uint64 {
|
|
length := len(items)
|
|
if length == 0 {
|
|
return nil
|
|
}
|
|
var ret []uint64
|
|
index := rand.Intn(length)
|
|
for i := index; len(ret) < n && i < length; i++ {
|
|
ret = append(ret, items[i])
|
|
}
|
|
return ret
|
|
}
|
|
|
|
// addItems appends the given length items into the table.
|
|
addItems = func(n int) []uint64 {
|
|
var first = deleted
|
|
if len(items) != 0 {
|
|
first = items[len(items)-1] + 1
|
|
}
|
|
var ret []uint64
|
|
for i := 0; i < n; i++ {
|
|
ret = append(ret, first+uint64(i))
|
|
}
|
|
items = append(items, ret...)
|
|
return ret
|
|
}
|
|
)
|
|
|
|
var steps randTest
|
|
for i := 0; i < size; i++ {
|
|
step := randTestStep{op: r.Intn(opMax)}
|
|
switch step.op {
|
|
case opReload, opCheckAll:
|
|
case opAppend:
|
|
num := r.Intn(3)
|
|
step.items = addItems(num)
|
|
if len(step.items) == 0 {
|
|
step.blobs = nil
|
|
} else {
|
|
step.blobs = getVals(step.items[0], num)
|
|
}
|
|
case opRetrieve:
|
|
step.items = getItems(r.Intn(3))
|
|
case opTruncateHead:
|
|
if len(items) == 0 {
|
|
step.target = deleted
|
|
} else {
|
|
index := r.Intn(len(items))
|
|
items = items[:index]
|
|
step.target = deleted + uint64(index)
|
|
}
|
|
case opTruncateHeadAll:
|
|
step.target = deleted
|
|
items = items[:0]
|
|
case opTruncateTail:
|
|
if len(items) == 0 {
|
|
step.target = deleted
|
|
} else {
|
|
index := r.Intn(len(items))
|
|
items = items[index:]
|
|
deleted += uint64(index)
|
|
step.target = deleted
|
|
}
|
|
case opTruncateTailAll:
|
|
step.target = deleted + uint64(len(items))
|
|
items = items[:0]
|
|
deleted = step.target
|
|
}
|
|
steps = append(steps, step)
|
|
}
|
|
return reflect.ValueOf(steps)
|
|
}
|
|
|
|
func runRandTest(rt randTest) bool {
|
|
fname := fmt.Sprintf("randtest-%d", rand.Uint64())
|
|
f, err := newTable(os.TempDir(), fname, metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, false)
|
|
if err != nil {
|
|
panic("failed to initialize table")
|
|
}
|
|
var values [][]byte
|
|
for i, step := range rt {
|
|
switch step.op {
|
|
case opReload:
|
|
f.Close()
|
|
f, err = newTable(os.TempDir(), fname, metrics.NewMeter(), metrics.NewMeter(), metrics.NewGauge(), 50, true, false)
|
|
if err != nil {
|
|
rt[i].err = fmt.Errorf("failed to reload table %v", err)
|
|
}
|
|
case opCheckAll:
|
|
tail := atomic.LoadUint64(&f.itemHidden)
|
|
head := atomic.LoadUint64(&f.items)
|
|
|
|
if tail == head {
|
|
continue
|
|
}
|
|
got, err := f.RetrieveItems(atomic.LoadUint64(&f.itemHidden), head-tail, 100000)
|
|
if err != nil {
|
|
rt[i].err = err
|
|
} else {
|
|
if !reflect.DeepEqual(got, values) {
|
|
rt[i].err = fmt.Errorf("mismatch on retrieved values %v %v", got, values)
|
|
}
|
|
}
|
|
|
|
case opAppend:
|
|
batch := f.newBatch()
|
|
for i := 0; i < len(step.items); i++ {
|
|
batch.AppendRaw(step.items[i], step.blobs[i])
|
|
}
|
|
batch.commit()
|
|
values = append(values, step.blobs...)
|
|
|
|
case opRetrieve:
|
|
var blobs [][]byte
|
|
if len(step.items) == 0 {
|
|
continue
|
|
}
|
|
tail := atomic.LoadUint64(&f.itemHidden)
|
|
for i := 0; i < len(step.items); i++ {
|
|
blobs = append(blobs, values[step.items[i]-tail])
|
|
}
|
|
got, err := f.RetrieveItems(step.items[0], uint64(len(step.items)), 100000)
|
|
if err != nil {
|
|
rt[i].err = err
|
|
} else {
|
|
if !reflect.DeepEqual(got, blobs) {
|
|
rt[i].err = fmt.Errorf("mismatch on retrieved values %v %v %v", got, blobs, step.items)
|
|
}
|
|
}
|
|
|
|
case opTruncateHead:
|
|
f.truncateHead(step.target)
|
|
|
|
length := atomic.LoadUint64(&f.items) - atomic.LoadUint64(&f.itemHidden)
|
|
values = values[:length]
|
|
|
|
case opTruncateHeadAll:
|
|
f.truncateHead(step.target)
|
|
values = nil
|
|
|
|
case opTruncateTail:
|
|
prev := atomic.LoadUint64(&f.itemHidden)
|
|
f.truncateTail(step.target)
|
|
|
|
truncated := atomic.LoadUint64(&f.itemHidden) - prev
|
|
values = values[truncated:]
|
|
|
|
case opTruncateTailAll:
|
|
f.truncateTail(step.target)
|
|
values = nil
|
|
}
|
|
// Abort the test on error.
|
|
if rt[i].err != nil {
|
|
return false
|
|
}
|
|
}
|
|
f.Close()
|
|
return true
|
|
}
|
|
|
|
func TestRandom(t *testing.T) {
|
|
if err := quick.Check(runRandTest, nil); err != nil {
|
|
if cerr, ok := err.(*quick.CheckError); ok {
|
|
t.Fatalf("random test iteration %d failed: %s", cerr.Count, spew.Sdump(cerr.In))
|
|
}
|
|
t.Fatal(err)
|
|
}
|
|
}
|